Gas spectroscopic infrared analysis device

Abstract

The application discloses a kind of gas spectrum infrared analysis devices, including analyzer, sampling tube, gas collection mechanism and suction assembly, sampling tube is set on analyzer, gas collection mechanism is connected with one end of sampling tube, gas collection mechanism includes upper suction pipe, lower suction pipe and airway control assembly, airway control assembly is set to one end opening of sampling tube, one end of airway control assembly is connected with upper suction pipe, upper suction pipe is detachably connected with the top of one end of sampling tube, upper suction pipe is used to cooperate airway control assembly to control the one end opening of sampling tube to keep constant closed state, to avoid external gas mixing, lower suction pipe is arranged below one end of sampling tube and can be lifted, lower suction pipe is used to open the one end opening of sampling tube by lifting drive airway control assembly, to carry out gas collection, suction assembly is connected with sampling tube.The application belongs to the technical field of gas analyzer, specifically refers to a kind of gas spectrum infrared analysis device.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gas analyzers, and particularly relates to a gas spectrum infrared analysis device. BACKGROUND

[0002] The gas micro spectrum analyzer utilizes differential absorption spectrum technology, multiple reflection cell technology and micro ultraviolet spectrum detection technology, solves the problems of ultraviolet band environment and multi-component cross interference, realizes on-site detection of multiple-component gases such as benzene, toluene, butadiene, hydrogen sulfide, ammonia, chlorine, carbon disulfide, formaldehyde, sulfur dioxide and nitrogen dioxide discharged by industrial sources, is a compact, high-stability and high-resolution innovative gas analyzer, has low cost, and can be widely applied to monitoring of characteristic gases in economic development zones, industrial parks and chemical industry parks.

[0003] A utility model patent with the name of industrial park characteristic gas micro spectrum analyzer is disclosed in Chinese patent No. CN202122082680.4, which can realize quantitative acquisition and analysis of gases, and the position of the spring tube in the quantitative tube is set, so that the gas in the tube cannot be fully discharged by the pull-out plate, resulting in gas residue, which affects the accuracy of the next gas detection. SUMMARY

[0004] In view of the above problems, the application provides a gas spectrum infrared analysis device to overcome the defects of the prior art.

[0005] The technical scheme adopted by the application is as follows: the application provides a gas spectrum infrared analysis device, which comprises an analyzer, a sampling tube, a gas collection mechanism and a suction assembly, the sampling tube is arranged on the analyzer, the gas collection mechanism is connected with one end of the sampling tube, the gas collection mechanism comprises an upper suction tube, a lower suction tube and a gas passage control assembly, the gas passage control assembly is arranged at an open end of the sampling tube, one end of the gas passage control assembly is connected with the upper suction tube, the upper suction tube is movably connected with the top of one end of the sampling tube, the upper suction tube is used to cooperate with the gas passage control assembly to keep the open end of the sampling tube in a normally closed state, so as to avoid external gas mixing, the lower suction tube is movably arranged below one end of the sampling tube, the lower suction tube is used to open the open end of the sampling tube by lifting the driving gas passage control assembly to collect gas, and the suction assembly is connected with the sampling tube.

[0006] Further, the airway control assembly comprises a pushing module, a connecting rod, and a foldable sealing mechanism, the top of the pushing module is provided with an elastic supporting mechanism, the elastic supporting mechanism is slidably connected with the upper inhalation tube, the two sides of the pushing module are provided with first rotary connecting parts, the first rotary connecting parts are connected with unfolding push rods, the foldable sealing mechanism comprises a supporting assembly, an elastic sealing sheet, and a supporting plate group, the elastic sealing sheet is sealingly connected with the inner wall of the sampling tube, one side of the elastic sealing sheet is connected with the supporting plate group, the supporting plate group passes through the elastic sealing sheet and is connected with the supporting assembly, and the supporting assembly is connected with the pushing module through the connecting rod.

[0007] Further, the elastic supporting mechanism comprises a lifting slider, a supporting rod, a supporting top plate, and a sliding block, the lifting slider is movably arranged in the pushing module, the lifting slider is slidably connected with a sliding groove, the sliding groove is arranged on the inner wall of the pushing module, one end of the supporting rod is fixedly connected with the lifting slider, the other end of the supporting rod is fixedly connected with the supporting top plate, a supporting spring is sleeved on the supporting rod, one end of the supporting spring is in abutment with the supporting top plate, the other end of the supporting spring is in abutment with the top of the lifting slider, the sliding block is fixedly arranged on the top of the supporting top plate, the sliding block is connected with a sliding rail, and the sliding rail is arranged on the inner top of the upper inhalation tube.

[0008] Further, the supporting assembly comprises a first butt joint plate and a second butt joint plate, the first butt joint plate is connected with the middle part of one side of the elastic sealing sheet, the first butt joint plate is provided with a connecting part, the connecting part is connected with the pushing module through the connecting rod, the second butt joint plate is symmetrically arranged on the two sides of the first butt joint plate and connected with one side of the elastic sealing sheet, the second butt joint plate is provided with a second rotary connecting part, the second rotary connecting part is connected with the unfolding push rod, the supporting plate group comprises a middle supporting plate and side supporting plates, the middle supporting plate is connected with the other side of the elastic sealing sheet, the middle supporting plate is connected with the first butt joint plate through the elastic sealing sheet through bolts, and the side supporting plates are rotatably connected with the two sides of the middle supporting plate.

[0009] Further, the first butt joint plate is provided with adjusting screws at the upper and lower ends, the adjusting screws are threadedly connected with mounting plates, the mounting plates are fixedly arranged at the upper and lower ends of the opening of the sampling tube, the end part of the adjusting screw is provided with an adjusting knob, and the diameter of the elastic sealing sheet is greater than the inner diameter of the sampling tube.

[0010] Further, the lower air suction pipe is arranged directly below the upper air suction pipe, a sealing layer is arranged on the abutting surface of the lower air suction pipe and the upper air suction pipe, the upper air suction pipe is sealed and connected with the sampling pipe, the inner bottom surface of the lower air suction pipe is provided with a driving top plate, the driving top plate is fixedly connected with the inner wall of the lower air suction pipe through a top rod, the driving top plate is arranged directly below the pushing module, the lower air suction pipe and the upper air suction pipe form an air suction structure in the combined state, one end of the air suction structure is a tapered structure with an opening, the inner wall of the end of the lower air suction pipe close to the sampling pipe is provided with a sealing strip, the bottom of the lower air suction pipe is connected with the output end of the telescopic cylinder, and the telescopic cylinder is arranged on the analyzer.

[0011] Further, the side wall of the sampling pipe close to the opening at one end thereof is provided with a one-way valve, the one-way valve is connected with the analyzer through a gas guide pipe, so that the obtained gas sample is analyzed and detected by the analyzer.

[0012] Further, the air suction assembly comprises a piston plate, a piston rod, a pushing plate and a displacement guide rod, the piston plate is movably arranged in the sampling pipe, one end of the piston rod is connected with the piston plate, the other end of the piston rod penetrates out of the sampling pipe and is fixedly connected with the pushing plate, the bottom of the pushing plate is connected with one end of the displacement guide rod, the other end of the displacement guide rod is fixedly connected with a driving member, and the driving member is connected with a driving mechanism.

[0013] Further, the driving mechanism comprises 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 with 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 with the lead screw.

[0014] Further, the bottom of the sampling pipe is fixedly arranged on the analyzer through a supporting member.

[0015] The beneficial effects achieved by the above structure are as follows:

[0016] The upper air suction pipe fixedly arranged on the sampling pipe cooperates with the airway control assembly to completely isolate external gas in normal state, the sampling pipe is opened through linkage of the lower air suction pipe and the airway control assembly during sampling, environmental gas is effectively avoided from mixing, sample purity is ensured, detection accuracy is improved, the upper air suction pipe and the lower air suction pipe cooperated with the air suction assembly can be separated after use to open the internal structure, so that gas is avoided from remaining in the internal structure.

[0017] The push module is supported by the push module, and the elastic sealing piece is driven to unfold and fold through the linkage cooperation of the connecting rod and the foldable sealing mechanism, so that the opening of the sampling tube is closed and opened. When the sampling tube is closed, the push module is supported by the elastic support, the expansion push rod on both sides of the push module pushes the second abutting plate on both sides to cooperate with the side support plate to rotate and expand the elastic sealing piece, so that the sampling tube is isolated from the external environment. When the lower suction pipe is lifted, the driving top plate arranged in the lower suction pipe drives the push module to rise and control the folding of the elastic sealing piece, so that the opening of the sampling tube is quickly opened, and the quick transmission cooperation between structures is effectively realized.

[0018] In use, the upper suction pipe and the lower suction pipe are combined, the airway control assembly drives the sampling tube to open, and the airway control assembly cooperates with the air suction assembly to sample gas. When the gas is transported to the analyzer through the air suction assembly cooperating with the one-way valve, the lower suction pipe is lowered, and the airway control assembly closes the sampling tube to cooperate with the gas transportation detection. The structure linkage realizes the quick sampling and detection of the gas, and effectively avoids the gas residue. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A perspective view of a gas spectrum infrared analysis device is provided.

[0020] Figure 2 A structure view of a sampling tube of a gas spectrum infrared analysis device is provided.

[0021] Figure 3 A sectional view of an upper air inlet pipe of a gas spectrum infrared analysis device is provided.

[0022] Figure 4 A sectional view of a lower air inlet pipe of a gas spectrum infrared analysis device is provided.

[0023] Figure 5 A perspective view of an airway control assembly of a gas spectrum infrared analysis device is provided.

[0024] Figure 6 A structure view of an elastic support mechanism of a gas spectrum infrared analysis device is provided.

[0025] Figure 7 A structure view of a support assembly of a gas spectrum infrared analysis device is provided.

[0026] Figure 8 A structure view of a support plate group of a gas spectrum infrared analysis device is provided.

[0027] Figure 9 A support plate group disassembly structure diagram of a gas spectrum infrared analysis device is provided in the present application;

[0028] Figure 10 An enlarged structure diagram of the structure marked A of a gas spectrum infrared analysis device is provided in the present application;

[0029] Figure 11 A partial sectional view structure schematic diagram of a sampling tube of a gas spectrum infrared analysis device is provided in the present application;

[0030] Figure 12 A structure diagram of a gas suction assembly of a gas spectrum infrared analysis device is provided in the present application;

[0031] Figure 13 A structure diagram of a driving mechanism of a gas spectrum infrared analysis device is provided in the present application.

[0032] Among them, 1, analyzer; 2, sampling tube; 3, gas collection mechanism; 4, upper suction pipe; 5, lower suction pipe; 6, airway control assembly; 7, push module; 8, elastic support mechanism; 9, connecting rod; 10, foldable plugging mechanism; 11, support plate group; 12, middle support plate; 13, side support plate; 14, elastic sealing sheet; 15, support assembly; 16, first butt joint plate; 17, connecting part; 18, second butt joint plate; 19, second rotary connecting part; 20, adjusting screw; 21, lifting slide; 22, sliding groove; 23, support rod; 24, support top plate; 25, sliding block; 26, support spring; 27, sliding rail; 28, jacking rod; 29, driving top plate; 30, sealing strip; 31, gas suction assembly; 32, piston plate; 33, driving piece; 34, piston rod; 35, displacement guide rod; 36, push plate; 37, air guide pipe; 41, supporting piece; 42, telescopic cylinder; 43, driving mechanism; 44, driving motor; 45, driving guide rail; 46, lead screw; 47, one-way valve; 48, unfolding push rod; 49, first rotary connecting part; 50, mounting plate; 52, adjusting knob.

[0033] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] As shown in Figures 1-13 The present application provides a gas spectrum infrared analysis device, which comprises an analyzer 1, a sampling tube 2, a gas collection mechanism 3 and an air suction assembly 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. The gas collection mechanism 3 comprises an upper air suction tube 4, a lower air suction tube 5 and an air passage control assembly 6. The air passage control assembly 6 is arranged at the opening of one end of the sampling tube 2. One end of the air passage control assembly 6 is connected to the upper air suction tube 4. The upper air suction tube 4 is movably connected to the top of one end of the sampling tube 2. The upper air suction tube 4 is used to cooperate with the air passage control assembly 6 to keep the opening of one end of the sampling tube 2 in a normally closed state, so as to avoid the mixing of external gas. The lower air suction tube 5 is movably arranged below one end of the sampling tube 2. The lower air suction tube 5 is used to open the opening of one end of the sampling tube 2 by lifting the air passage control assembly 6 to collect gas. The air suction assembly 31 is connected to the sampling tube 2.

[0037] In an embodiment of the present application, the air passage control assembly 6 comprises a pushing module 7, a connecting rod 9 and a foldable sealing mechanism 10. The top of the pushing module 7 is provided with an elastic supporting mechanism 8. The elastic supporting mechanism 8 is slidably connected to the upper air suction tube 4. The two sides of the pushing module 7 are provided with first rotary connecting parts 49. The first rotary connecting parts 49 are connected with unfolding push rods 48. The foldable sealing mechanism 10 comprises a supporting assembly 15, elastic sealing sheets 14 and a supporting plate group 11. The elastic sealing sheets 14 are sealingly connected to the inner wall of the sampling tube 2. One side of the elastic sealing sheets 14 is connected to the supporting plate group 11. The supporting plate group 11 passes through the elastic sealing sheets 14 and is connected to the supporting assembly 15. The supporting assembly 15 and the pushing module 7 are connected through the connecting rod 9.

[0038] In one embodiment of the present application, the elastic supporting mechanism 8 comprises a lifting slider 21, a supporting rod 23, a supporting top plate 24 and a sliding block 25, the lifting slider 21 is movably arranged in the pushing module 7, the lifting slider 21 is slidingly connected with a sliding groove 22, the sliding groove 22 is arranged on the inner wall of the pushing module 7, one end of the supporting rod 23 is fixedly connected with the lifting slider 21, the other end of the supporting rod 23 is fixedly connected with the supporting top plate 24, a supporting spring 26 is sleeved on the supporting rod 23, one end of the supporting spring 26 abuts against the supporting top plate 24, the other end of the supporting spring 26 abuts against the top of the lifting slider 21, the sliding block 25 is fixedly arranged on the top of the supporting top plate 24, the sliding block 25 is connected with a sliding rail 27, and the sliding rail 27 is arranged on the inner top of the upper air suction pipe 4.

[0039] In one embodiment of the present application, the supporting assembly 15 comprises a first docking plate 16 and a second docking plate 18, the first docking plate 16 is connected with the middle of one side of the elastic sealing sheet 14, the first docking plate 16 is provided with a connecting part 17, the connecting part 17 is connected with the pushing module 7 through the connecting rod 9, the second docking plate 18 is symmetrically arranged on both sides of the first docking plate 16 and connected with one side of the elastic sealing sheet 14, the second docking plate 18 is provided with a second rotating connecting part 19, the second rotating connecting part 19 is connected with the unfolding push rod 48, the supporting plate group 11 comprises a middle supporting plate 12 and a side supporting plate 13, the middle supporting plate 12 is connected with the other side of the elastic sealing sheet 14, the middle supporting plate 12 is connected with the first docking plate 16 through the elastic sealing sheet 14 by means of bolts, and the side supporting plate 13 is rotatably connected with both sides of the middle supporting plate 12, and the side supporting plate 13 is connected with the second docking plate 18 through the elastic sealing sheet 14 by means of bolts.

[0040] In one embodiment of the present application, the upper and lower ends of the first docking plate 16 are provided with adjusting screws 20, the adjusting screws 20 are threadedly connected with mounting plates 50, the mounting plates 50 are fixedly arranged on the upper and lower ends of the opening of the sampling pipe 2, the end of the adjusting screw 20 is provided with an adjusting knob 52, and the diameter of the elastic sealing sheet 14 is greater than the inner diameter of the sampling pipe 2.

[0041] In one embodiment of the present application, the lower air suction pipe 5 is arranged directly below the upper air suction pipe 4, a sealing layer is arranged on the abutting surface of the lower air suction pipe 5 and the upper air suction pipe 4, the upper air suction pipe 4 is sealingly connected with the sampling pipe 2, a driving top plate 29 is arranged on the inner bottom surface of the lower air suction pipe 5, the driving top plate 29 is fixedly connected with the inner wall of the lower air suction pipe 5 through a top rod 28, the driving top plate 29 is arranged directly below the pushing module 7, the lower air suction pipe 5 and the upper air suction pipe 4 form an air suction structure in the combined state, one end of the air suction structure is a tapered structure with an opening, a sealing strip 30 is arranged on the inner wall of the end of the lower air suction pipe 5 close to the sampling pipe 2, the bottom of the lower air suction pipe 5 is connected with the output end of a telescopic cylinder 42, and the telescopic cylinder 42 is arranged on the analyzer 1.

[0042] In one embodiment of the present application, a one-way valve 47 is installed on the side wall of the sampling tube 2 near its open end, and the one-way valve 47 is connected to the analyzer 1 through the air guide tube 37, so that the obtained gas sample is analyzed and detected by the analyzer 1.

[0043] In one embodiment of the present application, 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, and the other end of the piston rod 34 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, and 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.

[0044] In one embodiment of the present application, the driving mechanism 43 includes a driving guide rail 45, a lead screw 46, and a driving motor 44. 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. The output end of the driving motor 44 is connected to the lead screw 46.

[0045] In one embodiment of the present application, the bottom of the sampling tube 2 is fixedly arranged on the analyzer 1 by the support member 41.

[0046] Working principle: When using the gas spectrum infrared analysis device of the present application to analyze gas sampling, the relevant personnel first place the gas to be detected at one end of the upper air suction tube 4, or move the analyzer 1 as a whole to the detection area to obtain gas sampling on site. Then the relevant personnel use the control panel (hereinafter referred to as the controller) on the analyzer 1 as the control end to perform gas sampling through pre-set programs or on-site control.

[0047] In the initial state, the lower air suction tube 5 is Figure 1The lower opening state is shown. When gas sampling is performed, the relevant personnel control the telescopic cylinder 42 to lift the lower suction pipe 5, and the upper suction pipe 4 is closed, and the suction pipe structure is sealed and connected with the side wall of the sampling pipe 2 to form a closed suction pipe structure. In this process, as the lower suction pipe 5 is lifted, the driving top plate 29 arranged at the bottom of the lower suction pipe 5 is lifted to push the push module 7. At this time, the push module 7 is lifted under the cooperation of the connecting rod 9, and the sliding block 25 slides along the sliding rail 27 to compensate, and the push module 7 extrudes the supporting spring 26, and the lifting sliding block 21 slides inwards along the sliding groove 22, and the unfolding push rod 48 arranged on both sides of the push module 7 pulls the second connecting plate 18 on both sides to drive the elastic sealing piece 14 to rotate and fold along the middle supporting plate 12 on both sides, so that the opening of the sampling pipe 2 is opened. When the sampling pipe 2 is opened and the suction pipe structure is formed by the cooperation of the upper suction pipe 4 and the lower suction pipe 5, gas collection can be performed. At this time, the controller starts the driving motor 44 to drive the driving member 33 to move along the driving guide rail 45 through the lead screw 46, and the piston plate 32 is pulled to the other side of the sampling pipe 2 through the piston rod 34, and the gas sample is sucked by negative pressure, until the piston plate 32 reaches the end to complete the sample suction.

[0048] After the gas suction step is completed, the obtained 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 push module 7 controls the unfolding of the foldable blocking mechanism 10 under the support of the supporting spring 26, and the opening of the sampling pipe 2 is closed. The piston plate 32 is reset, so that the gas in the sampling pipe 2 is pushed to the opening, so that the gas is transported to the analyzer 1 through the one-way valve 47 on one side through the gas guide pipe 37, to realize a complete gas acquisition and transportation step.

[0049] In the embodiment of the application, the first connecting plate 16 can be fixedly arranged by adjusting the screw rod 20 in cooperation with the mounting plate 50 at the opening of the sampling pipe 2, so that the elastic sealing piece 14 effectively seals the opening of the sampling pipe 2.

[0050] In summary, the gas spectrum infrared analysis device of the present application: through the cooperation of the upper air suction pipe fixed on the sampling pipe and the airway control assembly, the external gas is completely isolated in normal state, and the sampling pipe is opened through the linkage of the lower air suction pipe and the airway control assembly, so that the environmental gas is effectively avoided from mixing, the sample purity is ensured, the detection accuracy is improved, and when sampling, the upper air suction pipe and the lower air suction pipe combined to form the air suction pipe structure cooperate with the air suction assembly to suck the gas through negative pressure, and after use, the internal structure can be separated and opened to avoid gas remaining therein. The push module is supported, the linkage of the connecting rod and the foldable sealing mechanism is cooperated, the up-down movement of the push module drives the expansion and folding of the elastic sealing piece, the closure and opening of the sampling pipe opening are realized, the expansion push rod distributed on both sides of the push module is used to drive the second abutting plate on both sides to cooperate with the side support plate to rotate and expand the elastic sealing piece when the sampling pipe opening is closed, the isolation between the sampling pipe and the external environment is ensured, and when the lower air suction pipe is lifted, the driving top plate arranged in the lower air suction pipe is used to drive the push module to rise and control the folding of the elastic sealing piece, the quick opening of the sampling pipe opening is realized, and the quick transmission cooperation between structures is effectively realized. During use, the upper air suction pipe and the lower air suction pipe are combined, the airway control assembly is driven to open the sampling pipe, and the air suction assembly is used for gas sampling, when the gas is transported to the analyzer through the air suction assembly cooperating with the one-way valve, the lower air suction pipe is lowered, and the airway control assembly closes the sampling pipe to cooperate with the gas transportation detection, the quick sampling and detection of the gas are realized through the linkage of the structure, and the gas residue is effectively avoided.

[0051] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. In addition, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0052] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0053] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution are not creative, and should belong to the protection scope of the present application.

Claims

1. A gas spectral infrared analysis device, characterized in that: Includes the analyzer, sampling tube, gas collection mechanism, and intake assembly; The sampling tube is mounted on the analyzer; The gas collection mechanism is connected to one end of the sampling tube, and the gas collection mechanism includes an upper suction tube, a lower suction tube, and a gas passage control component. The airway control component is located at one end of the sampling tube opening, and one end of the airway control component is connected to the upper inhalation tube; The upper suction tube is movably connected to the top of one end of the sampling tube. The upper suction tube is used in conjunction with the airway control component to control the opening of one end of the sampling tube to remain normally closed in order to prevent external gas from mixing in. The lower suction tube is movably disposed below one end of the sampling tube. The lower suction tube is used to open one end of the sampling tube by lifting and driving the airway control component to collect gas. The air intake assembly is connected to the sampling tube; The airway control component includes a push module, a linkage, and a foldable sealing mechanism; The top of the push module is provided with an elastic support mechanism, which is slidably connected to the upper air intake tube. The two sides of the push module are provided with first rotating connecting parts, and the first rotating connecting parts are connected to the unfolding push rod. The foldable sealing mechanism includes a support assembly, an elastic sealing sheet, and a support plate assembly. The elastic sealing sheet is sealed to the inner wall of the sampling tube. One side of the elastic sealing sheet is connected to the support plate assembly. The support plate assembly passes through the elastic sealing sheet and is connected to the support assembly. The support assembly is connected to the push module via a connecting rod. The support assembly includes a first docking plate and a second docking plate; The first docking plate is connected to the middle of one side of the elastic sealing sheet. The first docking plate is provided with a connecting part, which 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 sheet. The second docking plate is provided with a second rotating connection part, which is connected to the unfolding push rod. The support plate assembly includes a central support plate and side support plates. The central support plate is connected to the other side of the elastic sealing sheet. The central support plate is connected to the first mating plate by bolts passing through the elastic sealing sheet. The side support plates are rotatably connected to both sides of the central support plate. The side support plates are connected to the second mating plate by bolts passing through the elastic sealing sheet. The lower suction pipe is located directly below the upper suction pipe. A sealing layer is provided at the mating surface of the lower suction pipe and the upper suction pipe. The upper suction pipe is sealed and connected to the sampling tube. A driving top plate is provided on the inner bottom surface of the lower suction pipe. 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 located directly below the pushing module. The lower suction pipe and the upper suction pipe form a suction structure in the combined state, and one end of the structure is a conical structure with an opening. A sealing strip is provided on the inner wall of the lower suction pipe near the sampling tube. The bottom of the lower suction pipe is connected to the output end of the telescopic cylinder, which is mounted on the analyzer.

2. The gas spectral infrared analysis device according to claim 1, characterized in that: The elastic support mechanism includes a lifting slider, a support rod, a support top plate, and a slider; The lifting slider is movably disposed within the pushing module, and the lifting slider is slidably connected to a sliding groove, which is formed 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 mounted on the top of the supporting top plate. The slider is connected to the slide rail, which is located at the top inner part of the upper suction pipe.

3. The gas spectral infrared analysis device according to claim 2, characterized in that: The first docking plate is provided with adjusting screws at its upper and lower ends. The adjusting screws are threadedly connected to the mounting plate. The mounting plate is fixedly installed at the upper and lower ends of the sampling tube opening at one end. The end of the adjusting screw is provided with an adjusting knob. The diameter of the elastic sealing sheet is larger than the inner diameter of the sampling tube.

4. The gas spectral infrared analysis device according to claim 3, characterized in that: A one-way valve is installed on the side wall of the sampling tube near its opening at one end. The one-way valve is connected to the analyzer through a gas guide tube, so that the gas sample can be analyzed and detected by the analyzer.

5. The gas spectral infrared analysis device according to claim 4, characterized in that: The suction assembly includes a piston plate, a piston rod, a push plate, and a displacement guide rod. The piston plate is movably disposed inside 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 component, which is connected to the driving mechanism.

6. The gas spectral infrared analysis device according to claim 5, characterized in that: The drive mechanism includes a drive rail, a lead screw, and a drive motor. The drive rail is fixedly mounted on the surface of the analyzer. The lead screw is rotatably connected to the drive rail. The drive motor is fixedly mounted at one end of the drive rail, and the output end of the drive motor is connected to the lead screw.

7. The gas spectral infrared analysis device according to claim 6, characterized in that: The bottom of the sampling tube is fixed to the analyzer by a support.

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