Multi-position gas sampling device

Abstract

The utility model relates to the technical field of gas chromatographs, in particular to a multi-position gas sampling device which comprises a connecting pipe which is in threaded connection with the side face of a body and used for limiting, one end of the connecting pipe is in threaded connection with a fixing shell used for limiting, and a telescopic rod used for adjusting is inserted into the upper end of the fixing shell. The lower end of the telescopic rod is in threaded connection with a pressing plate used for fixing, the interior of the fixing shell is in threaded connection with a conveying pipe used for positioning, and the side face of the conveying pipe is fixedly connected with a filter screen used for filtering. According to the multi-position gas sampling device, through the cooperative arrangement of the fixing shell and the pressing plate, after a worker installs an external pipeline at one end of the connecting pipe, the pipeline can be fixed and limited, the pipeline and the connecting pipe can be installed more firmly and stably, meanwhile, when the external pressure of the pipeline is large, the pipeline cannot fall off, and by means of the arrangement of the telescopic rod, the pipeline can be fixed more stably. And therefore, a worker can adjust the position of the pressing plate more conveniently, so that the pressing plate reaches a proper position.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatographs, in particular to a multi-position gas sampling device. Background Art

[0002] Gas chromatograph is an important analytical instrument, which is widely used in various fields, such as environmental analysis, food analysis, fine chemicals, pharmaceutical analysis, petrochemical industry and polymer analysis. The gas chromatograph system is mainly composed of liquid reservoir, pump, injector, chromatographic column, detector, recorder and other parts. Gas is used as mobile phase. When a multi-component mixed sample is injected into the injector, the sample is instantly vaporized and carried by the mobile phase gas through the chromatographic column containing the stationary phase. In the chromatographic column, the component molecules and the stationary phase molecules undergo adsorption and desorption processes. Due to the difference in intermolecular forces, different components are distributed differently between the two phases, thereby achieving separation. The separated components enter the detector in sequence, are converted into electrical signals and sent to the recorder or integrator, and finally a chromatogram is drawn.

[0003] Chinese patent announcement number CN201796018U discloses a connection device for the gas inlet of a gas chromatograph, which belongs to the field of gas chromatographs. One end of the connection device is provided with a needle valve matching a steel cylinder, and the other end is provided with an external thread matching the inlet of the gas injection device of the gas chromatograph. A hexagonal shoulder for fastening is provided between the two ends. Compared with the prior art, the beneficial effect of the utility model is that the gas cylinder can be directly connected to the gas injection device of the gas chromatograph through this device conveniently and quickly, and the gas composition in the cylinder can be quickly and accurately analyzed.

[0004] However, the utility model has the following problems when it is actually used:

[0005] 1. When the existing equipment delivers the gas to be detected into the interior of the equipment, it is not convenient to limit the connected pipes. When the external pressure is too high, it is easy to cause the pipes to fall off, and the harmful gas inside the pipes will leak, causing harm to the staff;

[0006] 2. When the existing equipment is conducting detection, it is not convenient to filter the gas entering the equipment, which may easily cause the particles in the gas to block the equipment, causing inconvenience. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] In order to overcome the above-mentioned defects of the prior art, the utility model provides a multi-position gas sampling device, which solves the problem raised in the above-mentioned background technology that when the existing equipment sends the gas to be detected into the interior of the equipment, it is not convenient to limit the connected pipes. When the external pressure is too large, it is easy to cause the pipes to fall off, and harmful gases inside the pipes leak, causing harm to the staff. When the existing equipment is performing detection, it is not convenient to filter the gas entering the interior of the equipment, and it is easy to cause the particles in the gas to block the equipment, causing inconvenience.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: a multi-position gas sampling device, including a connecting tube threadedly connected to the side of the main body for limiting, one end of the connecting tube is threadedly connected to a fixed shell for limiting, the upper end of the fixed shell is plugged with a telescopic rod for adjustment, the lower end of the telescopic rod is threadedly connected to a pressure plate for fixing, the internal thread of the fixed shell is connected to a transmission tube for positioning, and the side of the transmission tube is fixedly connected to a filter screen for filtering.

[0011] Optionally, a fan for heat dissipation is fixedly connected to the side of the body, and a protective shell for protection is connected to the side of the fan by bolts.

[0012] Optionally, a positioning pin for limiting position is inserted into the side of the protective shell, and the positioning pin passes through one side of the protective shell and is inserted into the interior of the main body.

[0013] Optionally, a valve for control is threadedly connected to the upper end of the connecting pipe, and the outer surface of the valve is sleeved with anti-slip grooves for increasing friction.

[0014] Optionally, a limiting tube for fixing is inserted into one end of the transmission tube, and a clamping ring for limiting is threadedly connected to one end of the transmission tube.

[0015] Optionally, a spring for buffering is clamped inside the limiting tube, and a connecting hole for positioning is provided on the side of the limiting tube.

[0016] Optionally, a buffer rod for support is threadedly connected to the lower end of the main body, and a protective barrel for protection is clamped on the outer surface of the buffer rod.

[0017] Optionally, the lower end of the buffer rod is threadedly connected to an adjustment block for extension and retraction, and the lower end of the adjustment block is fixedly connected to a rubber pad for increasing friction.

[0018] (III) Beneficial effects

[0019] The utility model provides a multi-position gas sampling device, which has the following beneficial effects:

[0020] 1. The multi-position gas sampling device is provided with a fixed shell and a pressure plate. After the staff installs the external pipeline on one end of the connecting pipe, it can be fixed and limited, so that it is installed more firmly and stably with the connecting pipe. At the same time, when the pressure outside the pipeline is large, it will not fall off. With the help of the setting of the telescopic rod, the staff can more conveniently adjust the position of the pressure plate to a suitable position.

[0021] 2. The multi-position gas sampling device, through the coordinated setting of the transmission tube and the filter, can filter the gas when the gas to be detected outside is sent into the inside of the main body, so as to prevent the particles in the gas from clogging the pipeline and causing inconvenience to the detection, and at the same time further improve the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the protective shell structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the connecting pipe of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the limit tube of the utility model;

[0026] Figure 5 This is a schematic diagram of the transmission tube structure of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the protective barrel of the utility model.

[0028] In the figure: 1. main body; 2. connecting pipe; 3. fixed shell; 4. telescopic rod; 5. pressure plate; 6. transmission pipe; 7. filter; 8. fan; 9. protective shell; 10. positioning pin; 11. valve; 12. limit tube; 13. clamping ring; 14. spring; 15. connecting hole; 16. buffer rod; 17. protective barrel; 18. adjusting block. DETAILED DESCRIPTION

[0029] 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. 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.

[0030] See also Figures 1 to 6In order to cool down its body 1 and make it run more stably, the utility model provides a technical solution: a multi-position gas sampling device, comprising a connecting pipe 2 threadedly connected to the side of the body 1 for limiting, a fan 8 for heat dissipation is fixedly connected to the side of the body 1, a protective shell 9 for protection is connected to the side of the fan 8 by bolts, and a positioning pin 10 for limiting is inserted on the side of the protective shell 9, and the positioning pin 10 passes through one side of the protective shell 9 and is inserted in the inside of the body 1. With the setting of the fan 8, the body 1 can be cooled down to make it run more stably. At the same time, with the setting of the protective shell 9, the fan 8 can be protected when it is running to avoid it from being damaged. At the same time, with the setting of the positioning pin 10, the protective shell 9 can be disassembled more conveniently;

[0031] See also Figures 2 to 6 In order to more conveniently adjust the height of the body 1 to a suitable position, one end of the connecting pipe 2 is threadedly connected with a fixed shell 3 for limiting, the upper end of the connecting pipe 2 is threadedly connected with a valve 11 for control, the outer surface of the valve 11 is sleeved with anti-slip grooves for increasing friction, the lower end of the body 1 is threadedly connected with a buffer rod 16 for support, the outer surface of the buffer rod 16 is clamped with a protective barrel 17 for protection, the lower end of the buffer rod 16 is threadedly connected with an adjustment block 18 for telescopic, the lower end of the adjustment block 18 is fixedly connected with a rubber pad for increasing friction, and the upper end of the fixed shell 3 is plugged with a telescopic rod 4 for adjustment. With the help of the setting of the valve 11, it is convenient for the staff to control the gas entering the body 1. Through the setting of the buffer rod 16, the impact force borne by the upper end of the body 1 can be absorbed, so that it can be placed more stably. At the same time, with the help of the setting of the protective barrel 17, the buffer rod 16 can be protected. At the same time, with the help of the setting of the adjustment block 18, the height of the body 1 can be more conveniently adjusted to a suitable position;

[0032] See also Figures 1 to 4In order to more conveniently connect its external pipeline to the outer surface of the transmission pipe 6, the lower end of the telescopic rod 4 is threadedly connected with a pressing plate 5 for fixing, and the internal thread of the fixed shell 3 is connected with a transmission pipe 6 for positioning, one end of the transmission pipe 6 is plugged with a limiting pipe 12 for fixing, and one end of the transmission pipe 6 is threadedly connected with a clamping ring 13 for limiting, and the inside of the limiting pipe 12 is clamped with a spring 14 for buffering, and a connecting hole 15 for positioning is opened on the side of the limiting pipe 12, and a filter screen 7 for filtering is fixedly connected to the side of the transmission pipe 6. With the help of the setting of the limiting pipe 12, the transmission pipe 6 can be supported. At the same time, with the help of the setting of the clamping ring 13, the transmission pipe 6 can be more conveniently clamped in the inside of the limiting pipe 12. When the staff connects the external pipeline to the outer surface of the transmission pipe 6, the transmission pipe 6 is supported by the spring 14. When the staff pushes, the spring 14 is compressed, and then the transmission pipe 6 is bounced into the inside of the external pipeline.

[0033] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0034] In the utility model, the working steps of the device are as follows:

[0035] First, the staff adjusts the adjustment block 18 so that the main body 1 reaches a suitable height and is placed more stably. At the same time, the external pipe is clamped on the outer surface of the transmission pipe 6. Then the staff adjusts the telescopic rod 4 so that the pressure plate 5 reinforces the pipe on the outer surface of the transmission pipe 6 to make it more firmly installed. Then the main body 1 is started to detect its gas.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-position gas sampling device, comprising a connecting tube (2) threadedly connected to the side of a body (1) for limiting position, characterized in that: One end of the connecting tube (2) is threadedly connected to a fixed shell (3) for limiting position, the upper end of the fixed shell (3) is plugged with a telescopic rod (4) for adjustment, the lower end of the telescopic rod (4) is threadedly connected to a pressure plate (5) for fixing, the interior of the fixed shell (3) is threadedly connected to a transmission tube (6) for positioning, and the side of the transmission tube (6) is fixedly connected to a filter screen (7) for filtering.

2. A multi-position gas sampling device according to claim 1, characterized in that: A fan (8) for heat dissipation is fixedly connected to the side of the body (1), and a protective shell (9) for protection is connected to the side of the fan (8) via bolts.

3. A multi-position gas sampling device according to claim 2, characterized in that: A positioning pin (10) for limiting position is inserted into the side of the protective shell (9); the positioning pin (10) passes through one side of the protective shell (9) and is inserted into the interior of the body (1).

4. A multi-position gas sampling device according to claim 1, characterized in that: The upper end of the connecting pipe (2) is threadedly connected to a valve (11) for control, and the outer surface of the valve (11) is sleeved with anti-slip grooves for increasing friction.

5. A multi-position gas sampling device according to claim 1, characterized in that: One end of the transmission tube (6) is plugged with a position limiting tube (12) for fixing, and one end of the transmission tube (6) is threadedly connected with a clamping ring (13) for limiting.

6. A multi-position gas sampling device according to claim 5, characterized in that: A spring (14) for buffering is clamped inside the position limiting tube (12), and a connecting hole (15) for positioning is provided on the side of the position limiting tube (12).

7. A multi-position gas sampling device according to claim 1, characterized in that: The lower end of the body (1) is threadedly connected to a buffer rod (16) for support, and the outer surface of the buffer rod (16) is clamped with a protective barrel (17) for protection.

8. A multi-position gas sampling device according to claim 7, characterized in that: The lower end of the buffer rod (16) is threadedly connected to an adjustment block (18) for extension and retraction, and the lower end of the adjustment block (18) is fixedly connected to a rubber pad for increasing friction.

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