Gas treatment device for gas chromatograph-mass spectrometer for occupational health evaluation

Abstract

The utility model discloses a gas treatment device for a gas chromatograph-mass spectrometer for occupational health evaluation, which comprises a gas interface, a connecting pipeline, a mounting mechanism and a heating mechanism, the mounting mechanism is used for protecting the connecting pipeline, and the heating mechanism is used for heating gas flowing in an inner cavity of the connecting pipeline. The connecting pipeline is spirally wound on the mounting pipe, the two shells are arranged outside the connecting pipeline and the mounting pipe, so that the connecting pipeline is clamped in inner cavities of the mounting grooves, the two mounting rings are slidably inserted into the two ends of the shells in a penetrating mode, the mounting rings are fixed through the bolts, and stability of the connecting pipeline is guaranteed; the temperature of the inner cavity of the shell is increased through the heating pipe, heat generated by the heating pipe enters the inner cavity of the partition plate through the vent holes and makes contact with the connecting pipeline, gas circulating in the inner cavity of the connecting pipeline is evenly and fully heated, and the gas heating efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of gas chromatography-mass spectrometry (GC-MS), in particular to a gas processing device for a gas chromatography-mass spectrometry (GC-MS) instrument used for occupational health evaluation. Background Art

[0002] When the gas chromatography-mass spectrometer is working, the mixture sample is separated by the chromatographic column and then enters the ion source of the mass spectrometer. It is ionized into ions in the ion source. After passing through the mass analyzer and detector, the ions become mass spectrometry signals and are input into the computer. The computer can then collect mass spectra one by one. The gas chromatography-mass spectrometer is mainly composed of a chromatographic part, a gas-gas interface, a mass spectrometer part and a data processing system.

[0003] When the gas chromatography-mass spectrometer is in use, the gas phase mass spectrometer is connected to the mass spectrometer through the gas-gas interface. The most common connection method is the direct connection method, and a heating device is installed at the gas-gas interface to heat the gas to prevent condensation of the separated components. When the gas flows through the gas-gas interface, the gas flow rate is fast and the contact time between the gas and the heat is short, which makes the gas heating uneven and insufficient, reducing the efficiency of gas heating. Utility Model Content

[0004] The utility model aims to provide a gas processing device for a gas spectrometer-gas spectrometer for occupational health evaluation, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas processing device for a gas spectrometer-gas spectrometer for occupational health evaluation, comprising a gas-gas interface;

[0006] A connecting pipe, wherein the connecting pipe is arranged in the inner cavity of the gas-gas interface;

[0007] A mounting mechanism, the mounting mechanism is arranged on the gas-gas interface, the mounting mechanism is used to form a fixed structure on the gas-gas interface and protect the connecting pipe;

[0008] A heating mechanism is arranged in the inner cavity of the gas-gas interface, and is used to form a temperature-raising structure in the inner cavity of the gas-gas interface and to heat the gas flowing in the inner cavity of the connecting pipe.

[0009] Preferably, the mounting mechanism comprises:

[0010] A shell, the shell is used to form a main body of the gas-air interface;

[0011] A partition, the two ends of which are fixedly connected to the two ends of the inner wall of the shell respectively, and the partition is arranged in a semicircular tube shape;

[0012] The mounting grooves are arranged on the inner wall of the partition at equal intervals, and the mounting grooves are arranged in an arc shape.

[0013] Preferably, the mounting mechanism comprises:

[0014] A mounting tube, the mounting tube is slidably connected to the inner cavity of the shell, and the mounting tube is used to install and support the connecting pipeline;

[0015] A connector, one end of which is fixedly connected to the middle of the mounting pipe, and the other end of which is fixedly connected to one end of the connecting pipe;

[0016] A limiting ring is fixedly inserted and connected with one end of the mounting tube, and the limiting ring is arranged in the inner cavity of the shell.

[0017] Preferably, the mounting mechanism comprises:

[0018] A mounting ring, the mounting ring being slidably interlaced with one end of the housing;

[0019] A bolt is slidably and interlacedly connected with the top of the mounting ring, and the top of the bolt is threadedly connected with the top of the housing.

[0020] Preferably, the heating mechanism comprises:

[0021] Heating tubes, the heating tubes are arranged in an annular array at equal intervals in the inner cavity of the shell, and the heating tubes are arranged around the outside of the partition;

[0022] The vent holes are evenly distributed on the partition plate and are communicated with the inner cavity of the installation groove.

[0023] Preferably, the heating mechanism comprises:

[0024] A fixing ring, wherein the fixing ring is fixedly connected with one end of the partition plate, and one side of the fixing ring is fixedly connected with one end of the heating tube;

[0025] An electrical interface, wherein the electrical interface is fixedly connected to one end of the housing, and the electrical interface is fixedly connected to a fixing ring.

[0026] Technical effects and advantages of the utility model:

[0027] The utility model utilizes a setting mode that matches a connecting pipe, an outer shell, a partition, a mounting groove, a mounting ring, a heating pipe and a vent hole. The connecting pipe is spirally wrapped around the mounting pipe, and two outer shells are arranged outside the connecting pipe and the mounting pipe, so that the connecting pipe is clamped and arranged in the inner cavity of a plurality of mounting grooves. Then, the two mounting rings are slidably inserted into the two ends of the outer shell, and the mounting rings are fixed with bolts to ensure the stability of the connecting pipe. The heating pipe is utilized to increase the temperature of the inner cavity of the outer shell, and the heat generated by the heating pipe enters the inner cavity of the partition through the plurality of vent holes and contacts the connecting pipe, so that the gas flowing in the inner cavity of the connecting pipe is evenly and fully heated, thereby improving the efficiency of gas heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0029] Figure 2 It is a front sectional structural diagram of the shell of the utility model.

[0030] Figure 3 It is a schematic diagram of the side sectional structure of the partition of the utility model.

[0031] In the figure: 1. gas-gas interface; 2. connecting pipe; 3. mounting mechanism; 31. shell; 32. partition; 33. mounting groove; 34. mounting pipe; 35. connector; 36. limit ring; 37. mounting ring; 38. bolt; 4. heating mechanism; 41. heating pipe; 42. vent hole; 43. fixing ring; 44. electrical interface. DETAILED DESCRIPTION

[0032] 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.

[0033] The utility model provides Figure 1-3A gas processing device for a gas spectrometer-gas spectrometer for occupational health evaluation shown in the figure includes a gas-gas interface 1, a connecting pipe 2, a mounting mechanism 3 and a heating mechanism 4. The gas-gas interface 1 is a connecting component from a gas phase mass spectrometer to a mass spectrometer. The connecting pipe 2 is arranged in the inner cavity of the gas-gas interface 1. The connecting pipe 2 is spirally arranged on the outer wall of the mounting tube 34. The mounting mechanism 3 is arranged on the gas-gas interface 1. The mounting mechanism 3 is used to form a fixed structure on the gas-gas interface 1 and protect the connecting pipe 2, so as to heat the gas in the inner cavity of the connecting pipe 2. The heating mechanism 4 is arranged in the inner cavity of the gas-gas interface 1. The heating mechanism 4 is used to form a heating structure in the inner cavity of the gas-gas interface 1 and heat the gas flowing in the inner cavity of the connecting pipe 2.

[0034] Furthermore, the mounting mechanism 3 includes a shell 31, a partition 32, a mounting groove 33, a mounting tube 34, a connector 35, a limit ring 36, a mounting ring 37 and a bolt 38. The shell 31 is used to form the main body of the gas-gas interface 1. The two shells 31 are assembled to form a complete circular tube shape to install and protect the connecting pipe 2. The two ends of the partition 32 are respectively fixedly connected to the two ends of the inner wall of the shell 31. The partition 32 is arranged in a semicircular tube shape. The two partitions 32 form a circular tube shape. The partition 32 is used to separate the connecting pipe 2 and the heating pipe 41. The mounting groove 33, etc. The mounting groove 33 is arranged on the inner wall of the partition 32 in an arc shape. The mounting groove 33 is used to install the connecting pipe 2. The connecting pipe 2 is clamped in the inner cavity of the mounting groove 33 to limit and fix the connecting pipe 2 to ensure the stability of the connecting pipe 2. The mounting pipe 34 is slidably connected with the inner cavity of the shell 31. The mounting pipe 34 is used to install and support the connecting pipe 2. The connecting pipe 2 is sleeved on the mounting pipe 34. One end of the connector 35 is fixedly connected with the middle part of the mounting pipe 34. The other end of the connector 35 is fixedly connected with one end of the connecting pipe 2. The two ends of the connecting pipe 2 are connected to the mass spectrometer through the connector 35 to transport the gas to the inside of the mass spectrometer. The limiting ring 36 is fixedly inserted and connected with one end of the mounting tube 34. The limiting ring 36 is arranged in the inner cavity of the shell 31. The limiting ring 36 is used to limit the installation of the mounting tube 34 to prevent the mounting tube 34 from being separated from the shell 31. The mounting ring 37 is slidably inserted and connected with one end of the shell 31. One end of the two shells 31 is fixed by the mounting ring 37. The inner wall of the mounting ring 37 fits the outer wall of the shell 31. The bolt 38 is fixed to the top of the mounting ring 37. The top of the bolt 38 is threadedly connected to the top of the shell 31, and the mounting ring 37 is fixed to the shell 31 by turning and tightening the bolt 38 to ensure the stable connection of the two shells 31. The connecting pipe 2 is spirally wrapped around the mounting tube 34, and the two shells 31 are arranged on the outside of the connecting pipe 2 and the mounting tube 34, so that the connecting pipe 2 is clamped in the inner cavity of the multiple mounting grooves 33, and then the two mounting rings 37 are slidably inserted into the two ends of the shell 31, and the mounting rings 37 are fixed with bolts 38 to ensure the stability of the connecting pipe 2.

[0035] Specifically, the heating mechanism 4 includes a heating tube 41, a vent hole 42, a fixing ring 43 and an electrical interface 44. The heating tubes 41 are arranged in an annular array and are equidistant in the inner cavity of the shell 31. The heating tubes 41 are electrically connected to an external power supply through an external switch. The heating tubes 41 are arranged around the outside of the partition 32. The temperature of the inner cavity of the shell 31 is increased by the heating tube 41, and the gas flowing in the inner cavity of the connecting pipe 2 is heated. The vent holes 42 are evenly distributed on the partition 32. The vent holes 42 are connected to the inner cavity of the mounting groove 33. The heat generated by the heating tube 41 The amount enters the inner cavity of the partition 32 through multiple air holes 42 and contacts the connecting pipe 2. The fixing ring 43 is fixedly connected and inserted with one end of the partition 32. The fixing ring 43 is used to fix and install multiple heating tubes 41. The multiple heating tubes 41 are fixed in a circular array between two fixing rings 43. One side of the fixing ring 43 is fixedly connected to one end of the heating tube 41. The electrical interface 44 is fixedly connected to one end of the outer shell 31. The electrical interface 44 is fixedly connected to the fixing ring 43. The multiple heating tubes 41 are connected to an external power supply through the electrical interface 44 to provide electrical energy for the heating tubes 41.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A gas treatment device for a gas spectrometer-gas spectrometer for occupational health evaluation, include: Temperament interface (1); A connecting pipe (2), wherein the connecting pipe (2) is arranged in the inner cavity of the gas-gas interface (1); The invention is characterized in that the mounting mechanism (3) is arranged on the gas-gas interface (1), and the mounting mechanism (3) is used to form a fixed structure on the gas-gas interface (1) and protect the connecting pipe (2); A heating mechanism (4) is arranged in the inner cavity of the gas-gas interface (1), and is used to form a temperature-raising structure in the inner cavity of the gas-gas interface (1) and to heat the gas flowing in the inner cavity of the connecting pipe (2).

2. A gas treatment device for a gas spectrometer-gas spectrometer for occupational health evaluation according to claim 1, It is characterized in that The mounting mechanism (3) comprises: A shell (31), the shell (31) is used to form the main body of the gas-air interface (1); A partition (32), two ends of the partition (32) are respectively fixedly connected to two ends of the inner wall of the outer shell (31), and the partition (32) is arranged in a semicircular tube shape; The mounting grooves (33) are arranged at equal intervals on the inner wall of the partition plate (32), and the mounting grooves (33) are arranged in an arc shape.

3. The gas treatment device for a gas spectrometer-gas spectrometer for occupational health evaluation according to claim 2, It is characterized in that The mounting mechanism (3) comprises: A mounting tube (34), the mounting tube (34) being slidably connected to the inner cavity of the outer shell (31), and the mounting tube (34) being used to mount and support the connecting pipe (2); A connector (35), one end of which is fixedly connected to the middle of the mounting pipe (34) by insertion, and the other end of which is fixedly connected to one end of the connecting pipe (2); A limiting ring (36), the limiting ring (36) is fixedly inserted and connected to one end of the mounting tube (34), and the limiting ring (36) is arranged in the inner cavity of the outer shell (31).

4. The gas treatment device for a gas spectrometer-gas spectrometer for occupational health evaluation according to claim 3, It is characterized in that The mounting mechanism (3) comprises: A mounting ring (37), wherein the mounting ring (37) is slidably interlaced with one end of the housing (31); A bolt (38) is slidably connected with the top of the mounting ring (37), and the top of the bolt (38) is threadedly connected with the top of the housing (31).

5. The gas treatment device for a gas spectrometer-gas spectrometer for occupational health evaluation according to claim 4, It is characterized in that The heating mechanism (4) comprises: Heating tubes (41), the heating tubes (41) are arranged in an annular array at equal intervals in the inner cavity of the shell (31), and the heating tubes (41) are arranged around the outside of the partition (32); Ventilation holes (42), the ventilating holes (42) are evenly distributed on the partition (32), and the ventilating holes (42) are connected to the inner cavity of the installation groove (33).

6. A gas treatment device for a gas spectrometer-gas spectrometer for occupational health evaluation according to claim 5, It is characterized in that The heating mechanism (4) comprises: A fixing ring (43), wherein the fixing ring (43) is fixedly connected to one end of the partition (32) by insertion, and one side of the fixing ring (43) is fixedly connected to one end of the heating tube (41); An electrical interface (44), wherein the electrical interface (44) is fixedly connected to one end of the housing (31), and the electrical interface (44) is fixedly connected to the fixing ring (43).

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