Infrared analysis device for gas spectrum

Abstract

The invention discloses a gas spectrum infrared ray analysis device which comprises an analyzer, a sampling pipe, a gas collection mechanism and a gas suction assembly, the sampling pipe is arranged on the analyzer, the gas collection mechanism is connected with one end of the sampling pipe, and the gas collection mechanism comprises an upper gas suction pipe, a lower gas suction pipe and a gas channel control assembly; the air passage control assembly is arranged at an opening in one end of the sampling tube, one end of the air passage control assembly is connected with the upper air suction tube, and the upper air suction tube is detachably connected with the top of one end of the sampling tube and used for being matched with the air passage control assembly to control the opening in one end of the sampling tube to keep a normally-closed state so as to avoid external air mixing. The lower air suction pipe is arranged below one end of the sampling pipe in a lifting manner and is used for opening an opening in one end of the sampling pipe by lifting and driving the air passage control assembly so as to collect air, and the air suction assembly is connected with the sampling pipe. The invention belongs to the technical field of gas analyzers, and particularly relates to a gas spectrum infrared analysis device.

Description

Technical Field

[0001] The invention belongs to the technical field of gas analyzers, and in particular relates to a gas spectrum infrared analysis device. Background Art

[0002] The gas micro-spectrometer utilizes differential absorption spectroscopy technology, multiple reflection cell technology, and micro-ultraviolet spectroscopy detection technology to solve the problems of ultraviolet band environment and multi-component cross-interference, and realizes on-site detection of multi-component gases such as benzene, toluene, butadiene, hydrogen sulfide, ammonia, chlorine, carbon disulfide, formaldehyde, sulfur dioxide, and nitrogen dioxide emitted from industrial sources. It is a compact, highly stable, high-resolution innovative gas analyzer with low cost and can be widely used in the monitoring of characteristic gases in economic development zones, industrial parks, and chemical parks.

[0003] A Chinese patent application with application number CN202122082680.4 discloses a utility model patent called Industrial Park Characteristic Gas Micro-Spectrometer. Although it can achieve quantitative acquisition and analysis of gas, the position of the spring tube in the quantitative tube makes it impossible for the pull-out plate to fully discharge the gas in the tube, resulting in gas residue, which will affect the accuracy of the next gas detection. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a gas spectrum infrared analysis device, which effectively solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a gas spectrum infrared analysis device, including an analyzer, a sampling tube, a gas collection mechanism and an intake assembly. The sampling tube is arranged on the analyzer, and the gas collection mechanism is connected to one end of the sampling tube. The gas collection mechanism includes an upper intake pipe, a lower intake pipe and an airway control assembly. The airway control assembly is arranged at one end opening of the sampling tube, one end of the airway control assembly is connected to the upper intake pipe, and the upper intake pipe is movably connected to the top of one end of the sampling tube. The upper intake pipe is used to cooperate with the airway control assembly to control the opening of one end of the sampling tube to remain in a normally closed state to avoid external gas mixing. The lower intake pipe is movably arranged below one end of the sampling tube. The lower intake pipe is used to open the opening of one end of the sampling tube by lifting and driving the airway control assembly to collect gas. The intake assembly is connected to the sampling tube.

[0006] Furthermore, the airway control component includes a pushing module, a connecting rod, and a foldable sealing mechanism. An elastic support mechanism is provided on the top of the pushing module, and the elastic support mechanism is slidably connected to the upper suction pipe. First rotating connection parts are provided on both sides of the pushing module, and the first rotating connection parts are connected to the unfolding push rod. The foldable sealing mechanism includes a support assembly, an elastic sealing sheet and a support plate group. The elastic sealing sheet is sealed with the inner wall of the sampling tube, and one side of the elastic sealing sheet is connected to the support plate group. The support plate group is connected to the support assembly through the elastic sealing sheet, and the support assembly and the pushing module are connected by a connecting rod.

[0007] Furthermore, the elastic support mechanism includes a lifting slider, a support rod, a support top plate and a slider. The lifting slider is movably arranged in the pushing module. The lifting slider is slidably connected to a slide groove, and the slide groove is opened on the inner wall of the pushing module. One end of the support rod is fixedly connected to the lifting slider, and the other end of the support rod is fixedly connected to the support top plate. A support spring is sleeved on the support rod, one end of the support spring abuts against the support top plate, and the other end of the support spring abuts against the top of the lifting slider. The slider is fixedly arranged on the top of the support top plate, the slider is connected to the slide rail, and the slide rail is opened on the inner top of the upper intake pipe.

[0008] Furthermore, the support assembly includes a first docking plate and a second docking plate, the first docking plate is connected to the middle part of one side of the elastic sealing plate, a connecting part is provided on the first docking plate, the connecting part is connected to the pushing module through a connecting rod, the second docking plate is symmetrically arranged on both sides of the first docking plate and connected to one side of the elastic sealing plate, a second rotating connecting part is provided on the second docking plate, the second rotating connecting part is connected to the deployment push rod, the support plate group includes a middle support plate and a side support plate, the middle support plate is connected to the other side of the elastic sealing plate, the middle support plate is connected to the first docking plate by bolts passing through the elastic sealing plate, the side support plates are rotatably connected to both sides of the middle support plate, and the side support plates are connected to the second docking plate by bolts passing through the elastic sealing plate.

[0009] Furthermore, adjusting screws are provided at the upper and lower ends of the first docking plate, the adjusting screws are threadedly connected to the mounting plate, the mounting plate is fixedly arranged at the upper and lower ends of the opening at one end of the sampling tube, and the end of the adjusting screw is provided with an adjusting knob, and the diameter of the elastic sealing sheet is larger than the inner diameter of the sampling tube.

[0010] Furthermore, the lower suction pipe is arranged directly below the upper suction pipe, and a sealing layer is provided at the docking surface between the lower suction pipe and the upper suction pipe. The upper suction pipe and the sampling tube are sealed and connected. A driving top plate is provided on the inner bottom surface of the lower suction pipe, and the driving top plate is fixedly connected to the inner wall of the lower suction pipe through a top rod. The driving top plate is arranged directly below the pushing module. The lower suction pipe and the upper suction pipe form an suction structure in a combined state, and one end thereof is a conical structure with an opening. A sealing strip is provided on the inner wall of the lower suction pipe near one end of the sampling tube, and the bottom of the lower suction pipe is connected to the output end of the telescopic cylinder, and the telescopic cylinder is arranged on the analyzer.

[0011] Furthermore, a one-way valve is installed on the side wall of the sampling tube near the opening at one end thereof, and the one-way valve is connected to the analyzer through the air guide tube, so that the obtained gas sample is analyzed and detected by the analyzer.

[0012] Furthermore, the suction assembly includes a piston plate, a piston rod, a push plate and a displacement guide rod. The piston plate is movably arranged in the sampling tube. One end of the piston rod is connected to the piston plate, and the other end of the piston rod passes through the sampling tube and is fixedly connected to the push plate. The bottom of the push plate is connected to one end of the displacement guide rod, and the other end of the displacement guide rod is fixedly connected to the driving member, and the driving member is connected to the driving mechanism.

[0013] Furthermore, the driving mechanism includes a driving guide rail, a lead screw and a driving motor. The driving guide rail is fixedly arranged on the surface of the analyzer, the lead screw is rotatably connected to the driving guide rail, the driving motor is fixedly arranged at one end of the driving guide rail, and the output end of the driving motor is connected to the lead screw.

[0014] Furthermore, the bottom of the sampling tube is fixed on the analyzer through a supporting member.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: By cooperating with the airway control component on the upper suction pipe fixed on the sampling tube, complete isolation from external gas is achieved under normal circumstances. When sampling, the sampling tube is opened by the linkage between the lower suction pipe and the airway control component, which effectively prevents the mixing of environmental gases, ensures the purity of the sample, and improves the detection accuracy. When sampling, the upper suction pipe and the lower suction pipe that can be combined to form the suction pipe structure cooperate with the suction component to absorb gas through negative pressure. After use, the internal structure can be separated and opened to avoid gas residue.

[0016] The pushing module serves as a support, and the linkage cooperation between the connecting rod and the foldable sealing mechanism enables the pushing module to move up and down to drive the elastic sealing sheet to expand and fold, thereby realizing the closing and opening of the sampling tube opening. Among them, through the expansion push rods distributed on both sides of the pushing module, when the sampling tube opening is closed, the pushing module is supported by the elastic support member, and the expansion push rods push the second docking plates on both sides to cooperate with the side support plates to rotate and expand the elastic sealing sheet to ensure the isolation between the sampling tube and the external environment. When the lower suction pipe is lifted, the driving top plate arranged inside it pushes the pushing module to rise and then controls the folding of the elastic sealing sheet, thereby realizing the rapid opening of the sampling tube gate and effectively realizing the rapid transmission cooperation between the structures.

[0017] During use, the upper suction pipe and the lower suction pipe are merged and the airway control component is driven to open the sampling pipe, and cooperate with the suction component to perform gas sampling. When the gas is transported to the analyzer through the suction component in cooperation with the one-way valve, the lower suction pipe descends and the airway control component closes the sampling pipe to cooperate with the gas delivery detection. The structural linkage realizes rapid sampling and detection of gas, and effectively avoids gas residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of a gas spectrum infrared analysis device proposed by the present invention; Figure 2 This is a structural diagram of a sampling tube of a gas spectrum infrared analysis device proposed by the present invention; Figure 3 This is a cross-sectional structural diagram of an upper air intake pipe of a gas spectrum infrared analysis device proposed by the present invention; Figure 4 This is a cross-sectional structural diagram of a lower air intake pipe of a gas spectrum infrared analysis device proposed by the present invention; Figure 5 This is a three-dimensional structural diagram of the airway control component of a gas spectrum infrared analysis device proposed by the present invention; Figure 6 This is a schematic structural diagram of an elastic support mechanism for a gas spectrum infrared analysis device proposed by the present invention; Figure 7 This is a schematic structural diagram of a support assembly for a gas spectrum infrared analysis device proposed by the present invention; Figure 8 This is a structural schematic diagram of a support plate assembly for a gas spectrum infrared analysis device proposed by the present invention; Figure 9 This is a disassembled structural diagram of a support plate assembly of a gas spectrum infrared analysis device proposed by the present invention; Figure 10 This is an enlarged view of the structure of the gas spectrum infrared analysis device marked A proposed by the present invention; Figure 11 This is a schematic diagram of a partial cross-sectional structure of a sampling tube of a gas spectrum infrared analysis device proposed by the present invention; Figure 12 This is a structural diagram of an air-intake assembly of a gas spectrum infrared analysis device proposed by the present invention; Figure 13 This is a structural diagram of the driving mechanism of a gas spectrum infrared analysis device proposed by the present invention.

[0019] Among them, 1. analyzer; 2. sampling tube; 3. gas collection mechanism; 4. upper air intake pipe; 5. lower air intake pipe; 6. airway control assembly; 7. push module; 8. elastic support mechanism; 9. connecting rod; 10. foldable sealing mechanism; 11. support plate group; 12. middle support plate; 13. side support plate; 14. elastic sealing sheet; 15. support assembly; 16. first docking plate; 17. connecting part; 18. second docking plate; 19. second rotating connecting part; 20. adjusting screw; 21. lifting slider; 22. slide; 23. support Rod; 24, supporting top plate; 25, slider; 26, supporting spring; 27, slide rail; 28, push rod; 29, driving top plate; 30, sealing strip; 31, suction assembly; 32, piston plate; 33, driving member; 34, piston rod; 35, displacement guide rod; 36, push plate; 37, air guide tube; 41, supporting member; 42, telescopic cylinder; 43, driving mechanism; 44, driving motor; 45, driving guide rail; 46, screw; 47, one-way valve; 48, unfolding push rod; 49, first rotating connection part; 50, mounting plate; 52, adjusting knob.

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0023] like Figures 1-13 As shown, the present invention proposes a gas spectrum infrared analysis device, including an analyzer 1, a sampling tube 2, a gas collection mechanism 3 and an air suction component 31. The sampling tube 2 is arranged on the analyzer 1, and the gas collection mechanism 3 is connected to one end of the sampling tube 2. The gas collection mechanism 3 includes an upper air suction pipe 4, a lower air suction pipe 5 and an airway control component 6. The airway control component 6 is arranged at one end opening of the sampling tube 2, one end of the airway control component 6 is connected to the upper air suction pipe 4, and the upper air suction pipe 4 is movably connected to the top of one end of the sampling tube 2. The upper air suction pipe 4 is used to cooperate with the airway control component 6 to control the opening of one end of the sampling tube 2 to remain in a normally closed state to prevent external gas from mixing in. The lower air suction pipe 5 is movably arranged below one end of the sampling tube 2. The lower air suction pipe 5 is used to open the opening of one end of the sampling tube 2 by lifting and driving the airway control component 6 to perform gas collection. The air suction component 31 is connected to the sampling tube 2.

[0024] In one embodiment of the present invention, the airway control component 6 includes a pushing module 7, a connecting rod 9, and a foldable sealing mechanism 10. An elastic support mechanism 8 is provided on the top of the pushing module 7, and the elastic support mechanism 8 is slidingly connected to the upper suction pipe 4. A first rotating connection part 49 is provided on both sides of the pushing module 7, and the first rotating connection part 49 is connected to the unfolding push rod 48. The foldable sealing mechanism 10 includes a support assembly 15, an elastic sealing piece 14 and a support plate group 11. The elastic sealing piece 14 is sealed with the inner wall of the sampling tube 2, and one side of the elastic sealing piece 14 is connected to the support plate group 11. The support plate group 11 is connected to the support assembly 15 through the elastic sealing piece 14, and the support assembly 15 is connected to the pushing module 7 through the connecting rod 9.

[0025] In one embodiment of the present invention, the elastic support mechanism 8 includes a lifting slider 21, a support rod 23, a support top plate 24 and a slider 25. The lifting slider 21 is movably arranged in the pushing module 7. The lifting slider 21 is slidably connected to a slide groove 22. The slide groove 22 is opened on the inner wall of the pushing module 7. One end of the support rod 23 is fixedly connected to the lifting slider 21, and the other end of the support rod 23 is fixedly connected to the support top plate 24. A support spring 26 is sleeved on the support rod 23, one end of the support spring 26 abuts against the support top plate 24, and the other end of the support spring 26 abuts against the top of the lifting slider 21. The slider 25 is fixedly arranged on the top of the support top plate 24, the slider 25 is connected to the slide rail 27, and the slide rail 27 is opened on the inner top of the upper intake pipe 4.

[0026] In one embodiment of the present invention, the support assembly 15 includes a first docking plate 16 and a second docking plate 18. The first docking plate 16 is connected to the middle part of one side of the elastic sealing plate 14. The first docking plate 16 is provided with a connecting portion 17, and the connecting portion 17 is connected to the pushing module 7 through a connecting rod 9. The second docking plate 18 is symmetrically arranged on both sides of the first docking plate 16 and is connected to one side of the elastic sealing plate 14. The second docking plate 18 is provided with a second rotating connecting portion 19, and the second rotating connecting portion 19 is connected to the deployment push rod 48. The support plate group 11 includes a middle support plate 12 and a side support plate 13. The middle support plate 12 is connected to the other side of the elastic sealing plate 14. The middle support plate 12 is connected to the first docking plate 16 by bolts passing through the elastic sealing plate 14. The side support plates 13 are rotatably connected to both sides of the middle support plate 12, and the side support plates 13 are connected to the second docking plate 18 by bolts passing through the elastic sealing plate 14.

[0027] In one embodiment of the present invention, adjusting screws 20 are provided at the upper and lower ends of the first docking plate 16, and the adjusting screw 20 is threadedly connected to the mounting plate 50. The mounting plate 50 is fixedly arranged at the upper and lower ends of the opening at one end of the sampling tube 2. An adjusting knob 52 is provided at the end of the adjusting screw 20, and the diameter of the elastic sealing sheet 14 is larger than the inner diameter of the sampling tube 2.

[0028] In one embodiment of the present invention, the lower air intake pipe 5 is arranged directly below the upper air intake pipe 4, and a sealing layer is provided at the docking surface between the lower air intake pipe 5 and the upper air intake pipe 4. The upper air intake pipe 4 is sealed and connected to the sampling tube 2. The inner bottom surface of the lower air intake pipe 5 is provided with a driving top plate 29. The driving top plate 29 is fixedly connected to the inner wall of the lower air intake pipe 5 through a top rod 28. The driving top plate 29 is arranged directly below the pushing module 7. The lower air intake pipe 5 and the upper air intake pipe 4 form an air intake structure in a combined state, and one end thereof is a conical structure with an opening. A sealing strip 30 is provided on the inner wall of the lower air intake pipe 5 near one end of the sampling tube 2. The bottom of the lower air intake pipe 5 is connected to the output end of the telescopic cylinder 42, and the telescopic cylinder 42 is arranged on the analyzer 1.

[0029] In one embodiment of the present invention, a one-way valve 47 is installed on the side wall of the sampling tube 2 near the opening at one end thereof. The one-way valve 47 is connected to the analyzer 1 through the gas guide tube 37, so that the obtained gas sample is analyzed and detected by the analyzer 1.

[0030] In one embodiment of the present invention, the suction assembly 31 includes a piston plate 32, a piston rod 34, a push plate 36 and a displacement guide rod 35. The piston plate 32 is movably arranged in the sampling tube 2. One end of the piston rod 34 is connected to the piston plate 32. The other end of the piston rod 34 passes through the sampling tube 2 and is fixedly connected to the push plate 36. The bottom of the push plate 36 is connected to one end of the displacement guide rod 35. The other end of the displacement guide rod 35 is fixedly connected to the driving member 33. The driving member 33 is connected to the driving mechanism 43.

[0031] In one embodiment of the present invention, the driving mechanism 43 includes a driving guide rail 45, a screw 46 and a driving motor 44. The driving guide rail 45 is fixedly arranged on the surface of the analyzer 1, the screw 46 is rotatably connected to the driving guide rail 45, the driving motor 44 is fixedly arranged at one end of the driving guide rail 45, and the output end of the driving motor 44 is connected to the screw 46.

[0032] In one embodiment of the present invention, the bottom of the sampling tube 2 is fixed on the analyzer 1 via a supporting member 41 .

[0033] Working Principle: When using a gas spectrum infrared analyzer of the present invention to perform gas sampling and analysis, the relevant personnel first place the gas to be tested at one end of the upper suction pipe 4, or move the analyzer 1 as a whole to the area to be tested to obtain on-site samples of the gas in the current environment. Then, the relevant personnel use the control panel on the analyzer 1 (hereinafter referred to as the controller) as the control end to perform gas sampling according to the preset program or on-site control; In the initial state, the lower suction pipe 5 is as Figure 1The figure is in the open state of the lower position. When gas sampling is carried out, the relevant personnel control the telescopic cylinder 42 to lift the lower suction pipe 5 through the controller, and then close it with the upper suction pipe 4, sealing it with the side wall of the sampling tube 2 to form a closed suction pipe structure. In this process, as the lower suction pipe 5 is lifted, the driving top plate 29 set at its bottom is lifted with it to lift the pushing module 7. At this time, the pushing module 7 is lifted up with the cooperation of the connecting rod 9, and the slider 25 slides along the slide rail 27 for compensation, and the pushing module 7 squeezes the support spring 26 while causing the lifting slider 21 to slide inward along the slide groove 22. At this time, the pushing module 7 is set to The unfolding push rods 48 on both sides of the delivery module 7 pull the second docking plates 18 on both sides under its drag, so that the side support plates 13 drive the elastic sealing plates 14 to rotate and fold along both sides of the middle support plate 12, thereby realizing the opening of the sampling tube 2. When the tube mouth of the sampling tube 2 is opened and the upper suction pipe 4 cooperates with the lower suction pipe 5 to form an suction pipe structure, gas collection can be carried out. At this time, the controller starts the drive motor 44 to drive the drive member 33 to move along the drive guide rail 45 through the screw 46, and pulls the piston plate 32 to the other side of the sampling tube 2 through the piston rod 34, and absorbs the gas sample through negative pressure until the piston plate 32 reaches the end to complete the sample absorption; After the gas absorption step is completed, the acquired gas needs to be transported to the analyzer 1. At this time, the telescopic cylinder 42 lowers the lower suction pipe 5, so that the pushing module 7 controls the expansion of the foldable sealing mechanism 10 under the support of the support spring 26. After the opening of the sampling tube 2 is closed, the piston plate 32 is reset to push the gas in the sampling tube 2 to the opening, thereby transporting the gas through the one-way valve 47 on one side and the air guide pipe 37 to the analyzer 1, realizing a complete gas acquisition and delivery step.

[0034] In the embodiment of the present application, the first docking plate 16 can be fixedly arranged by adjusting the screw 20 to cooperate with the mounting plate 50 at the opening of the sampling tube 2, so that the elastic sealing sheet 14 can effectively seal the opening of the sampling tube 2.

[0035] To summarize, the present invention provides a gas spectrum infrared analysis device: by cooperating with an upper suction pipe fixedly arranged on a sampling tube and an airway control component, it is possible to completely isolate the external gas under normal conditions; during sampling, the sampling tube is opened by linking the lower suction pipe and the airway control component, effectively preventing the mixing of ambient gas, ensuring the purity of the sample, and improving the detection accuracy; and during sampling, the upper suction pipe and the lower suction pipe that can be combined to form a suction pipe structure cooperate with the suction component to absorb gas through negative pressure, and after use, the internal structure can be separated and opened to avoid gas residue. The pushing module serves as a support, and the linkage cooperation between the connecting rod and the foldable sealing mechanism enables the pushing module to move up and down to drive the elastic sealing sheet to expand and fold, thereby realizing the closing and opening of the sampling tube opening. Among them, through the expansion push rods distributed on both sides of the pushing module, when the sampling tube opening is closed, the pushing module is supported by the elastic support member, and the expansion push rods push the second docking plates on both sides to cooperate with the side support plates to rotate and expand the elastic sealing sheet to ensure the isolation between the sampling tube and the external environment. When the lower suction pipe is lifted, the driving top plate arranged inside it pushes the pushing module to rise and then controls the folding of the elastic sealing sheet, thereby realizing the rapid opening of the sampling tube gate and effectively realizing the rapid transmission cooperation between the structures. During use, the upper suction pipe and the lower suction pipe are merged and the airway control component is driven to open the sampling pipe, and cooperate with the suction component to perform gas sampling. When the gas is transported to the analyzer through the suction component in cooperation with the one-way valve, the lower suction pipe descends and the airway control component closes the sampling pipe to cooperate with the gas delivery detection. The structural linkage realizes rapid sampling and detection of gas, and effectively avoids gas residue.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

[0038] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A gas spectrum infrared analysis device, characterized in that: It comprises an analyzer (1), a sampling tube (2), a gas collection mechanism (3) and an air suction component (31); The sampling tube (2) is arranged on the analyzer (1); The gas collection mechanism (3) is connected to one end of the sampling tube (2), and the gas collection mechanism (3) comprises an upper air intake pipe (4), a lower air intake pipe (5) and an airway control component (6); The airway control component (6) is arranged at one end opening of the sampling tube (2), and one end of the airway control component (6) is connected to the upper inhalation pipe (4); The upper air intake pipe (4) is movably connected to the top of one end of the sampling tube (2), and the upper air intake pipe (4) is used to cooperate with the airway control component (6) to control the opening of one end of the sampling tube (2) to remain in a normally closed state to prevent external gas from mixing in; The lower air intake pipe (5) is movably arranged below one end of the sampling tube (2), and the lower air intake pipe (5) is used to open the opening of one end of the sampling tube (2) by lifting and driving the airway control component (6) to collect gas; The air suction component (31) is connected to the sampling tube (2).

2. A gas spectrum infrared analysis device according to claim 1, characterized in that: The airway control assembly (6) comprises a pushing module (7), a connecting rod (9), and a foldable blocking mechanism (10); An elastic support mechanism (8) is provided on the top of the pushing module (7), and the elastic support mechanism (8) is slidably connected to the upper suction pipe (4). First rotating connection parts (49) are provided on both sides of the pushing module (7), and the first rotating connection parts (49) are connected to the deployment push rod (48); The foldable sealing mechanism (10) comprises a support assembly (15), an elastic sealing sheet (14) and a support plate group (11); the elastic sealing sheet (14) is sealedly connected to the inner wall of the sampling tube (2); one side of the elastic sealing sheet (14) is connected to the support plate group (11); the support plate group (11) passes through the elastic sealing sheet (14) and is connected to the support assembly (15); and the support assembly (15) is connected to the pushing module (7) via a connecting rod (9).

3. A gas spectrum infrared analysis device according to claim 2, characterized in that: The elastic support mechanism (8) comprises a lifting slider (21), a support rod (23), a supporting top plate (24) and a slider (25); The lifting slider (21) is movably arranged in the pushing module (7), and the lifting slider (21) is slidably connected to a slide groove (22), and the slide groove (22) is opened on the inner wall of the pushing module (7); One end of the support rod (23) is fixedly connected to the lifting slider (21), and the other end of the support rod (23) is fixedly connected to the support top plate (24). A support spring (26) is sleeved on the support rod (23), and one end of the support spring (26) abuts against the support top plate (24), and the other end of the support spring (26) abuts against the top of the lifting slider (21); The slider (25) is fixedly arranged on the top of the supporting top plate (24), and the slider (25) is connected to the slide rail (27), and the slide rail (27) is opened on the inner top of the upper suction pipe (4).

4. A gas spectrum infrared analysis device according to claim 3, characterized in that: The support assembly (15) comprises a first docking plate (16) and a second docking plate (18); The first docking plate (16) is connected to the middle portion of one side of the elastic sealing plate (14); a connecting portion (17) is provided on the first docking plate (16); and the connecting portion (17) is connected to the pushing module (7) via a connecting rod (9); The second docking plate (18) is symmetrically arranged on both sides of the first docking plate (16) and connected to one side of the elastic sealing plate (14); a second rotating connection portion (19) is provided on the second docking plate (18); and the second rotating connection portion (19) is connected to the deployment push rod (48); The support plate group (11) comprises a middle support plate (12) and a side support plate (13), wherein the middle support plate (12) is connected to the other side of the elastic sealing plate (14), and the middle support plate (12) is connected to the first docking plate (16) by means of bolts passing through the elastic sealing plate (14), and the side support plates (13) are rotatably connected to both sides of the middle support plate (12), and the side support plates (13) are connected to the second docking plate (18) by means of bolts passing through the elastic sealing plate (14).

5. A gas spectrum infrared analysis device according to claim 4, characterized in that: Adjustment screws (20) are provided at the upper and lower ends of the first docking plate (16), the adjustment screws (20) are threadedly connected to the mounting plate (50), the mounting plate (50) is fixedly arranged at the upper and lower ends of the opening at one end of the sampling tube (2), and the ends of the adjustment screws (20) are provided with adjustment knobs (52), and the diameter of the elastic sealing sheet (14) is larger than the inner diameter of the sampling tube (2).

6. A gas spectrum infrared analysis device according to claim 5, characterized in that: The lower suction pipe (5) is arranged directly below the upper suction pipe (4), and a sealing layer is provided at the interface between the lower suction pipe (5) and the upper suction pipe (4). The upper suction pipe (4) is sealed and connected to the sampling pipe (2). The inner bottom surface of the lower suction pipe (5) is provided with a driving top plate (29), and the driving top plate (29) is fixedly connected to the inner wall of the lower suction pipe (5) through a top rod (28). The driving top plate (29) is arranged directly below the pushing module (7). The lower suction pipe (5) and the upper suction pipe (4) form an suction structure in a combined state, and one end thereof is a conical structure with an opening. The inner wall of the lower suction pipe (5) close to one end of the sampling pipe (2) is provided with a sealing strip (30). The bottom of the lower suction pipe (5) is connected to the output end of the telescopic cylinder (42), and the telescopic cylinder (42) is arranged on the analyzer (1).

7. A gas spectrum infrared analysis device according to claim 6, characterized in that: A one-way valve (47) is installed on the side wall of the sampling tube (2) near the opening at one end thereof. The one-way valve (47) is connected to the analyzer (1) via the gas guide tube (37), so that the obtained gas sample is analyzed and detected by the analyzer (1).

8. A gas spectrum infrared analysis device according to claim 7, characterized in that: The air suction assembly (31) includes a piston plate (32), a piston rod (34), a push plate (36) and a displacement guide rod (35); the piston plate (32) is movably arranged in the sampling tube (2); one end of the piston rod (34) is connected to the piston plate (32); the other end of the piston rod (34) passes through the sampling tube (2) and is fixedly connected to the push plate (36); The bottom of the push plate (36) is connected to one end of the displacement guide rod (35), the other end of the displacement guide rod (35) is fixedly connected to the driving member (33), and the driving member (33) is connected to the driving mechanism (43).

9. A gas spectrum infrared analysis device according to claim 8, characterized in that: The driving mechanism (43) includes a driving guide rail (45), a lead screw (46) and a driving motor (44), wherein the driving guide rail (45) is fixedly arranged on the surface of the analyzer (1), the lead screw (46) is rotatably connected to the driving guide rail (45), the driving motor (44) is fixedly arranged at one end of the driving guide rail (45), and the output end of the driving motor (44) is connected to the lead screw (46).

10. A gas spectrum infrared analysis device according to claim 9, characterized in that: The bottom of the sampling tube (2) is fixedly arranged on the analyzer (1) via a supporting member (41).

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