Sampling GC tracking and monitoring device

Abstract

The utility model discloses a sampling GC (Gas Chromatography) tracking and monitoring device, which relates to the field of gas chromatography tracking and detection and comprises a rotating motor, an output shaft of the rotating motor is fixedly connected with a rotating disc, an eccentric shaft is rotatably mounted at an eccentric position of one end of the rotating disc, a connecting rod is rotatably mounted on the periphery of the eccentric shaft, and the connecting rod is fixedly connected with the rotating disc. A telescopic piston rod is rotationally mounted at the other end of the connecting rod, and the other end of the telescopic piston rod penetrates into an inner cavity of the piston cylinder; the top of the telescopic piston rod is connected with a piston assembly, and the periphery of the telescopic piston rod is fixedly connected with an adjusting assembly connected with the piston assembly. An air inlet assembly and an air outlet assembly are installed on the two sides of the top of the piston cylinder correspondingly. By arranging the adjusting mechanism, the distance between the top of the adjusting piston and the top end of the inner wall of the piston cylinder can be adjusted, so that the suction volume of the piston cylinder is adjusted, and gas is prevented from being excessively diluted after being sucked into the piston cylinder.

Description

Technical Field

[0001] The utility model relates to the field of trace detection of gas chromatography, in particular to a sampling GC trace monitoring device. Background Technique

[0002] The trace monitoring of GC (i.e., gas chromatography) is a detection method that continuously samples and detects the content change of a certain component at regular intervals to determine the progress of the reaction.

[0003] In the prior art, due to the inconsistent gas content generated by different reactions, an overly large extraction chamber will over-dilute the reaction gas. The molecules of the substances contained in the diluted gas will adhere to the inner wall of the piston cylinder, and the dispersion area is relatively large. When the gas is pushed out, the adhered molecules are not easily carried by the air, resulting in inaccurate detection results. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sampling GC trace monitoring device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A sampling GC trace monitoring device includes a rotating motor, the output shaft of the rotating motor is fixedly connected with a rotating disc, an eccentric shaft is rotatably installed at an eccentric position at one end of the rotating disc, a connecting rod is rotatably installed on the outer periphery of the eccentric shaft, and the other end of the connecting rod is rotatably installed with a telescopic piston rod, and the other end of the telescopic piston rod penetrates into the inner cavity of the piston cylinder;

[0006] The top of the telescopic piston rod is connected with a piston assembly, and an adjusting assembly connected to the piston assembly is fixedly connected to the outer periphery of the telescopic piston rod;

[0007] An air inlet assembly and an air outlet assembly are respectively installed on both sides of the top of the piston cylinder;

[0008] The downward moving piston assembly is used to draw the newly generated gas into the inner cavity of the piston cylinder through the air inlet assembly, and the upward moving piston assembly is used to inject the gas in the inner cavity of the piston cylinder into the gas chromatograph through the air outlet assembly.

[0009] As a further scheme of the utility model: The piston assembly includes an adjusting piston fixedly connected to the top of the telescopic piston rod, and an adjusting piston that can be adjusted up and down is arranged above the lifting piston, and the adjusting piston that is adjusted up and down is used to adjust the distance between the top of the adjusting piston and the top end of the inner wall of the piston cylinder.

[0010] As a further solution of the present utility model: The intake assembly includes an intake pipe and an intake check valve. The intake check valve is connected to the middle of the intake pipe, and the input end of the intake pipe is connected to the collection bottle.

[0011] As a further solution of the present utility model: The exhaust assembly includes an exhaust pipe and an exhaust check valve. The exhaust check valve is installed in the middle of the exhaust pipe, and the output end of the exhaust pipe is connected to the input pipe of the gas chromatograph.

[0012] As a further solution of the present utility model: The adjustment assembly includes a fixed disk fixedly connected to the lower part of the outer periphery of the telescopic piston rod. An eccentric position of the fixed disk is threadedly connected with a telescopic lifting column. The telescopic lifting column penetrates into the inner cavity of the piston cylinder and penetrates to the top of the lifting piston and is connected to the bottom of the adjustment piston.

[0013] As a further solution of the present utility model: An external thread is provided on the lower part of the outer periphery of the lifting rod of the telescopic lifting column, and a handle is fixedly connected to the bottom end of the telescopic lifting column. An internal thread engaged with the external thread is provided inside the fixed disk.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. By providing an adjustment mechanism, the distance between the top of the adjustment piston and the top end of the inner wall of the piston cylinder can be adjusted, thereby adjusting the suction volume of the piston cylinder and avoiding excessive dilution of the gas inhaled into the piston cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is an internal structural diagram of the present utility model;

[0018] Figure 3 is the Figure 2 partial enlarged view at A in the present utility model;

[0019] Figure 4 is the Figure 2 partial enlarged view at B in the present utility model;

[0020] Figure 5 is the Figure 2 partial enlarged view at C in the present utility model;

[0021] Figure 6 is the internal structural diagram of the telescopic piston rod and the telescopic lifting column of the present utility model.

[0022] In the figure: 1. Rotating motor; 2. Eccentric shaft; 3. Connecting rod; 4. Telescopic piston rod; 5. Fixed disk; 6. Telescopic lifting column; 7. Rotating disk; 8. Piston cylinder; 9. Inlet pipe; 10. Inlet check valve; 11. Outlet pipe; 12. Outlet check valve; 13. Lifting piston; 14. Adjusting piston; 15. External thread; 16. Handle. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1 to 5 , in the embodiment of the present invention, a sampling GC tracking and monitoring device includes a rotating motor 1. The output shaft of the rotating motor 1 is fixedly connected to a rotating disk 7. An eccentric shaft 2 is rotatably installed at an eccentric position at one end of the rotating disk 7. A connecting rod 3 is rotatably installed on the outer periphery of the eccentric shaft 2. The other end of the connecting rod 3 is rotatably installed with a telescopic piston rod 4. The other end of the telescopic piston rod 4 penetrates into the inner cavity of the piston cylinder 8; the top of the telescopic piston rod 4 is connected with a piston assembly, and an adjusting assembly connected to the piston assembly is fixedly connected to the outer periphery of the telescopic piston rod 4; an intake assembly and an exhaust assembly are respectively installed on both sides of the top of the piston cylinder 8; the downward moving piston assembly is used to suck the newly generated gas into the inner cavity of the piston cylinder 8 through the intake assembly, and the upward moving piston assembly is used to inject the gas in the inner cavity of the piston cylinder 8 into the gas chromatograph through the exhaust assembly.

[0025] In this embodiment: during the reaction process of generating gas, the generated gas is collected in different gas collecting bottles at intervals in batches. Then, the gas collecting bottles are connected to the intake assembly in the order of collection. After connection, by starting the rotating motor 1, the rotating motor 1 drives the rotating disk 7 to rotate. The self-rotating rotating disk 7 drives the eccentric shaft 2 to revolve around the center of the rotating disk 7. The eccentric shaft 2 pulls one end connected to the connecting rod 3 to rotate synchronously. At this time, the other end of the connecting rod 3 moves up and down, thereby pushing or pulling the telescopic piston rod 4 to slide up and down. When the telescopic piston rod 4 moves downward, the generated suction sucks the gas in the gas collecting bottle into the piston cylinder 8, and the upward moving piston assembly squeezes the gas in the piston cylinder 8 into the gas chromatograph through the exhaust assembly;

[0026] By replacing the gas collecting bottles in different orders and through the detection of the gas chromatograph, the differences in the content of various gases generated during the reaction process can be tracked and monitored.

[0027] Please refer particularly to Figure 3 , Figure 4 , Figure 5 and Figure 6 , the piston assembly includes an adjusting piston 14 fixedly connected to the top of the telescopic piston rod 4. An adjusting piston 14 that can be adjusted up and down is arranged above the lifting piston 13. The adjusting piston 14 that is adjusted up and down is used to adjust the distance between the top of the adjusting piston 14 and the inner wall top of the piston cylinder 8.

[0028] In this embodiment: By rotating the adjusting assembly, the adjusting assembly drives the adjusting piston 14 to move up and down. The distance between the top of the moving adjusting piston 14 and the inner wall top of the piston cylinder 8 changes. Therefore, the suction volume changes, and the volume of the inhaled gas can be changed to make the volume of the inhaled gas the same each time, so as to facilitate measuring the change in the content of each component under the same gas volume.

[0029] If the gas generated by a certain reaction is too much or too little, when using a collection bottle for collection, the volume of the gas collected by a single gas collecting bottle will also change. At this time, the position of the adjusting piston 14 can be adjusted by rotating the adjusting assembly to make the collection volume of the piston cylinder 8 equal to the volume of the gas collecting bottle (because: the piston cylinder 8 is made of transparent glass, and the surface of the piston cylinder 8 is provided with a volume scale, so relatively convenient adjustment can be carried out).

[0030] Please refer particularly to Figure 3 , the air inlet assembly includes an air inlet pipe 9 and an air inlet check valve 10. The air inlet check valve 10 is connected to the middle of the air inlet pipe 9, and the input end of the air inlet pipe 9 is connected to the collection bottle. The air outlet assembly includes an air outlet pipe 11 and an air outlet check valve 12. The air outlet check valve 12 is installed in the middle of the air outlet pipe 11, and the output end of the air outlet pipe 11 is connected to the input pipe of the gas chromatograph.

[0031] In this embodiment: During the downward movement of the piston assembly, the air inlet check valve 10 is opened under the suction force, and the gas synchronously enters the piston cylinder 8 under the suction force. Then, during the upward movement of the piston assembly, the air outlet check valve 12 is opened under the extrusion force, and the gas enters the gas chromatograph through the air outlet pipe 11 under the extrusion force.

[0032] Please refer particularly to Figure 6 , the adjusting assembly includes a fixed disk 5 fixedly connected to the lower part of the outer periphery of the telescopic piston rod 4. An eccentric position of the fixed disk 5 is threadedly connected with a telescopic lifting column 6. The telescopic lifting column 6 penetrates into the inner cavity of the piston cylinder 8 and penetrates to the top of the lifting piston 13 and is connected to the bottom of the adjusting piston 14. An external thread 15 is provided below the outer periphery of the lifting rod of the telescopic lifting column 6, and a handle 16 is fixedly connected to the bottom end of the telescopic lifting column 6. An internal thread that engages with the external thread 15 is provided inside the fixed disk 5.

[0033] In this embodiment: By rotating the handle 16, the handle 16 drives the telescopic lifting column 6 to rotate. At this time, while the telescopic lifting column 6 rotates, it moves upward or downward. The moving telescopic lifting column 6 pushes the adjusting piston 14 to move upward or downward, thereby completing the adjustment of the adjusting piston 14;

[0034] Since the stroke of the connecting rod 3 is fixed, after the adjusting piston 14 is adjusted upward, when the top of the adjusting piston 14 contacts the inner wall top of the piston cylinder 8, at this time, the stroke of the telescopic piston rod 4 has not reached the highest point, and at this time, the adjusting piston 14 has no upward displacement space. Therefore, at this time, the telescopic piston rod 4 and the telescopic lifting column 6 contract due to pressure.

[0035] The internal structures of the telescopic lifting column 6 and the telescopic piston rod 4 are as Figure 6 shown.

[0036] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A sampling GC tracking monitoring device, comprising a rotating motor (1), characterized in that: The output shaft of the rotating motor (1) is fixedly connected to a rotating disk (7); an eccentric shaft (2) is rotatably mounted at an eccentric position on one end of the rotating disk (7); a connecting rod (3) is rotatably mounted on the outer periphery of the eccentric shaft (2); a telescopic piston rod (4) is rotatably mounted on the other end of the connecting rod (3); and the other end of the telescopic piston rod (4) penetrates into the inner cavity of the piston cylinder (8); The top of the telescopic piston rod (4) is connected to a piston assembly, and the outer periphery of the telescopic piston rod (4) is fixedly connected to an adjustment assembly connected to the piston assembly; An air inlet assembly and an air outlet assembly are respectively installed on both sides of the top of the piston cylinder (8); The piston assembly moving downward is used to draw newly generated gas into the inner cavity of the piston cylinder (8) through the gas inlet assembly, and the piston assembly moving upward is used to pump the gas in the inner cavity of the piston cylinder (8) into the gas chromatograph through the gas outlet assembly.

2. A sampling GC tracking monitoring device according to claim 1, characterized in that: The piston assembly comprises an adjusting piston (14) fixedly connected to the top of the telescopic piston rod (4), and an adjusting piston (14) that can be adjusted up and down is arranged above the lifting piston (13). The adjusting piston (14) that can be adjusted up and down is used to adjust the distance between the top of the adjusting piston (14) and the top of the inner wall of the piston cylinder (8).

3. A sampling GC tracking monitoring device according to claim 2, characterized in that: The air intake assembly comprises an air intake pipe (9) and an air intake check valve (10), wherein the air intake check valve (10) is connected to the middle portion of the air intake pipe (9), and the input end of the air intake pipe (9) is connected to a collection bottle.

4. A sampling GC tracking monitoring device according to claim 3, characterized in that: The gas outlet assembly comprises a gas outlet pipe (11) and a gas outlet one-way valve (12); the gas outlet one-way valve (12) is installed in the middle of the gas outlet pipe (11); and the output end of the gas outlet pipe (11) is connected to an input pipe of a gas chromatograph.

5. A sampling GC tracking monitoring device according to claim 4, characterized in that: The adjustment assembly comprises a fixed plate (5) fixedly connected to the lower part of the outer periphery of the telescopic piston rod (4); a telescopic lifting column (6) is threadedly connected to an eccentric position of the fixed plate (5); the telescopic lifting column (6) penetrates the inner cavity of the piston cylinder (8) and penetrates to the top of the lifting piston (13) and is connected to the bottom of the adjustment piston (14).

6. A sampling GC tracking monitoring device according to claim 5, characterized in that: An external thread (15) is provided below the outer periphery of the lifting rod of the telescopic lifting column (6), and a handle (16) is fixedly connected to the bottom end of the telescopic lifting column (6), and an internal thread engaging with the external thread (15) is provided inside the fixing plate (5).

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