A gas analysis device for chemical production

Abstract

The present invention relates to a gas analysis device for chemical production, belonging to the technical field of gas analysis. It includes a fixing frame and a chromatograph fixedly installed inside the fixing frame for analyzing gases. A protective cover for gas transportation is fixedly installed on the top surface of the fixing frame, and an air inlet chamber and an air outlet chamber are successively arranged from top to bottom on the upper side inside the protective cover. A gas inlet pipe for transporting gases is fixedly installed on the left side of the inner wall of the air inlet chamber, and a gas outlet pipe for transporting gases is fixedly installed on the right side of the inner wall of the air outlet chamber. The present invention can filter and dehumidify the gas before analysis, avoiding the influence of moisture and dust on the device. Moreover, the device adopts two filter and dust removal structures that can be used alternately, which can ensure that while one filter and dust removal structure is in use, the other filter and dust removal structure is dried. The alternating use of the two filter and dust removal structures can not only avoid the problem of frequent replacement of the adsorption material, but also ensure the continuous operation effect of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of gas analysis, and particularly to a gas analysis device for chemical production. Background Art

[0002] Gas analysis is an analytical method for determining the composition of a mixed gas by using the different physical and chemical properties of various gases. In chemical production, for normal and safe production, various industrial gases need to be analyzed to understand their composition. The gas analysis device used in chemical production is generally a chromatograph.

[0003] However, during the use of the gas analysis device, the analyzed gas is from the chemical production process, so the gas may contain dust and moisture. Dust particles may block components such as the sampling port, pipeline, or filter of the gas analysis instrument, hindering the normal flow of the gas, resulting in the instrument not working properly or inaccurate measurement results. And moisture may cause the detector of the gas analysis instrument to get damp, reducing the sensitivity and stability of the detector. Therefore, generally, the gas to be analyzed needs to be dried and filtered before gas analysis, but this process not only increases the extra workload but also affects the use effect of the gas analysis device.

[0004] To solve the above problems, a gas analysis device for chemical production is needed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a gas analysis device for chemical production, which solves the problem of the influence of moisture and dust on the traditional device during use. By using two filter and dust removal structures that can be used alternately, it can ensure that while one filter and dust removal structure is in use, the other filter and dust removal structure is dried. The alternating use of the two filter and dust removal structures not only can avoid the problem of frequent replacement of the adsorption material but also can ensure the continuous operation effect of the device.

[0006] To achieve the above object, the present invention provides the following technical solution: A gas analysis device for chemical production includes a fixing frame and a chromatograph fixedly installed inside the fixing frame for analyzing gas. The top surface of the fixing frame is fixedly installed with a protective cover for gas transportation. The upper side inside the protective cover is successively provided with an air inlet cavity and an air outlet cavity from top to bottom. The left side of the inner wall of the air inlet cavity is fixedly installed with an air inlet pipe for transporting gas, and the right side of the inner wall of the air outlet cavity is fixedly installed with an air outlet pipe for transporting gas. The middle part of the inner wall of the protective cover is fixedly installed with a partition plate for vertical separation. And the lower side of the top surface of the fixing frame inside the protective cover is provided with a first air conversion mechanism for gas conversion.

[0007] On the left and right sides of the top surface of the partition plate, there are spiral tubes for adsorbing gas, and there are several drying mechanisms for adsorbing dry gas inside the spiral tubes. The upper and lower ends of the two spiral tubes are fixedly installed with L-shaped bellows for adapting to up and down deformation. On the upper side of the inner wall of the protective cover and in front of the air outlet cavity, there are two push vertical grooves for up and down movement, and on the upper side of the inner walls of the two push vertical grooves, there are second air exchange mechanisms for gas conversion.

[0008] Furthermore, the first air exchange mechanism includes two support blocks fixedly connected to the top surface of the fixed frame, and on the top surfaces of the two support blocks, there is a conversion shell for limiting fixedly installed. Inside the conversion shell, there is a double-port plate slidably installed for gas conversion to pass through. On the lower side of the inner wall of the conversion shell and directly below the L-shaped bellows, there is a ventilation opening. On the left and right sides of the front side of the inner wall of the conversion shell, there are first sliding openings for sliding. At the center of the upper side of the inner wall of the conversion shell, there is a second sliding opening for sliding. On the left side of the inner wall of the protective cover and on one side of the conversion shell, there is an electric telescopic rod for pushing fixedly installed, and the output end of the electric telescopic rod penetrates the surface of the conversion shell and is fixedly connected to the left surface of the double-port plate;

[0009] On the top surface of the double-port plate, there are two symmetric first sealing arc plates fixedly installed through connecting blocks, and the bottom surface of the first sealing arc plate is slidably connected to the top surface of the conversion shell. In front of the double-port plate and on one side of the two first sliding openings, there is a top rod rotatably connected through a rotating shaft. On the side of the first sealing arc plate, there are first air exchange openings for air exchange on the pipe walls of the lower two L-shaped bellows.

[0010] Furthermore, the drying mechanism includes a drying shell fixedly connected to the inner wall of the spiral tube. On the upper and lower sides of the inner wall of the drying shell, there are water-absorbing sponge columns for adsorption fixedly installed. Around the water-absorbing sponge column, there is a spiral plate for spiral air supply fixedly installed, and the surface of the spiral plate is fixedly connected to the inside of the drying shell. On the opposite sides of the surface of the drying shell, there are several ventilation openings for ventilation;

[0011] On the top surface of the partition plate and inside the two spiral tubes, there are transfer vertical rods slidably installed for pushing and transferring. The rod arms of the transfer vertical rods are fixedly connected to the surface of the spiral tube through several fixed orifice plates. On the lower sides of the rod arms of the two transfer vertical rods, there are thrust springs for auxiliary pushing fixedly installed through fixed limit rings, and the lower ends of the thrust springs are fixedly connected to the top surface of the partition plate.

[0012] Furthermore, the second air exchange mechanism includes a limiting vertical rod fixedly connected to the upper side of the inner wall of the pushing vertical groove, and the rod arm of the limiting vertical rod is embedded and connected to the upper end of the transmission vertical rod. The upper end of the transmission vertical rod is rotatably connected through two fixing blocks to a pushing inclined plate for pushing, and a blocking port block for blocking air is rotatably connected to the back of the two pushing inclined plates. The air outlet cavity and the air inlet cavity are communicated through two connecting vertical pipes, and the bottom surface of the connecting vertical pipe is closely attached to the top surface of the blocking port block;

[0013] On the rear sides of the pipe walls of the two upper L-shaped bellows, second air exchange openings for air exchange are respectively opened, and the top surface of the upper L-shaped bellows is closely attached to the bottom surface of the blocking port block. Second sealing arc plates for sealing are fixedly connected to the bottom surfaces of the two blocking port blocks at the rear sides of the second air exchange openings. Guide grooves for limiting and guiding are respectively opened on the left and right sides of the two blocking port blocks, and L-shaped support blocks for support are slidably connected inside the guide grooves.

[0014] Furthermore, the surface of the double-port plate is closely attached to the inside of the conversion shell, and the two holes of the double-port plate are both square. The two air permeable openings have the same shape and size as the holes of the double-port plate, and the surface of the connecting block is closely attached to the inner wall of the second sliding opening.

[0015] Furthermore, the upper ends of the two upper L-shaped bellows respectively penetrate through the upper side of the inner wall of the protective cover and extend into the air outlet cavity. The lower ends of the two lower L-shaped bellows respectively penetrate through the top surface of the partition plate and extend to the bottom surface of the partition plate. The lower ends of the two lower L-shaped bellows respectively penetrate through the top surface of the conversion shell and extend into the conversion shell, and the lower ends of the L-shaped bellows are in contact with the top surface of the double-port plate.

[0016] Furthermore, the surfaces of the two rotating shafts extend to the surface of the conversion shell through the inside of the first sliding opening. The surfaces of several drying shells penetrate through the inner wall of the spiral pipe and extend to the surface of the spiral pipe, and the drying shell is a U-shaped block structure with a circular cavity opened inside.

[0017] Furthermore, the ventilation openings arranged oppositely in the drying shell are arranged oppositely up and down, and the ventilation openings are arranged at the highest and lowest positions on the same side of the spiral plate. The rear sides of the rod arms of the two transmission vertical rods are respectively rotatably connected to the surfaces of the corresponding top rods.

[0018] Furthermore, the rear sides of the two blocking port blocks respectively penetrate through the rear sides of the inner walls of the corresponding pushing vertical grooves and extend into the air outlet cavity, and the holes of the two blocking port blocks are both circular.

[0019] Furthermore, the two first sealing arc plates and the two second sealing arc plates are both arc-shaped semi-circular structures, and a sealing silica gel pad is arranged inside the semi-circular structure. The bottom surfaces of several L-shaped support blocks are fixedly connected to the lower side of the inner wall of the air outlet cavity.

[0020] Compared with the prior art, the present invention provides a gas analysis device for chemical production, which has the following beneficial effects:

[0021] 1. The device can first filter and dehumidify the gas before analysis, avoiding the influence of moisture and dust on the device. Moreover, the device adopts two filter and dust removal structures that can be used alternately, which can ensure that while one filter and dust removal structure is in use, the other filter and dust removal structure is being dried. The alternating use of the two filter and dust removal structures can not only avoid the problem of frequent replacement of the adsorption material, but also ensure the continuous operation effect of the device.

[0022] 2. By utilizing the penetration effect of the drying shell, the materials inside the drying shell can be replaced, which can better ensure the use quality of the water-absorbing sponge column. The detachable effect of the drying shell can better replace and repair the water-absorbing sponge column, ensuring the normal use effect of the internal structure of the device.

[0023] 3. By arranging the ventilation ports up and down, the device can ensure the smooth passage of the gas through the spiral plate. And by using the spiral gas guiding of the spiral plate, not only can the loss during gas transportation be avoided, but also the contact time between the gas and the water-absorbing sponge column can be increased, improving the filtering effect of the gas.

[0024] 4. The circular holes provided in the baffle plate of the device can better match and connect the vertical pipe to ensure the transportation of the gas. And the L-shaped support blocks provided on the baffle plate can not only support the baffle plate, but also ensure the stability of the baffle plate during operation, thereby ensuring the tight connection between the connecting vertical pipe and the L-shaped corrugated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional view of the overall structure of the present invention;

[0026] Figure 2 is a three-dimensional vertical cross-sectional view of the protective cover of the present invention;

[0027] Figure 3 is of the present invention Figure 2 Schematic diagram of the enlarged structure of part A;

[0028] Figure 4 is of the present invention Figure 2 Schematic diagram of the enlarged structure of part B;

[0029] Figure 5 is a three-dimensional view of the partition plate of the present invention;

[0030] Figure 6 is of the present invention Figure 5 Schematic diagram of the enlarged structure of part C;

[0031] Figure 7 is a three-dimensional vertical cross-sectional view of the conversion shell of the present invention;

[0032] Figure 8 This is the three-dimensional cross-sectional view of the spiral tube of the present invention;

[0033] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of part D in;

[0034] Figure 10 This is the three-dimensional cross-sectional view of the drying mechanism of the present invention;

[0035] Figure 11 This is the three-dimensional view of the first sealing arc plate of the present invention.

[0036] In the figure: 1, fixing frame; 2, chromatograph; 3, protective cover; 4, intake cavity; 5, outlet cavity; 6, intake pipe; 7, outlet pipe; 8, partition plate; 9, first ventilation mechanism; 901, support block; 902, conversion shell; 903, double-port plate; 904, air vent; 905, first sliding port; 906, second sliding port; 907, electric telescopic rod; 908, connecting block; 909, first sealing arc plate; 910, ejector rod; 911, first ventilation port; 10, spiral tube; 11, drying mechanism; 1101, drying shell; 1102, water-absorbing sponge column; 1103, spiral plate; 1104, ventilation port; 1106, transfer vertical rod; 1107, fixed orifice plate; 1108, thrust spring; 1109, limiting ring; 12, L-shaped corrugated pipe; 13, pushing vertical groove; 14, second ventilation mechanism; 1401, limiting vertical rod; 1402, fixed block; 1403, pushing inclined plate; 1404, blocking port block; 1405, connecting vertical pipe; 1406, second ventilation port; 1407, second sealing arc plate; 1408, guiding groove; 1409, L-shaped support block. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1 to 11, A gas analysis device for chemical production in this embodiment includes a fixing frame 1 and a chromatograph 2 fixedly installed inside the fixing frame 1 for gas analysis. The installation and analysis techniques of the chromatograph 2 are all existing mature technologies. The working principle of using the chromatograph 2 to analyze chemical gases in the device is a mature technology, so this device will not be elaborated too much. A protective cover 3 for gas transportation is fixedly installed on the top surface of the fixing frame 1. An air inlet cavity 4 and an air outlet cavity 5 are successively opened from top to bottom on the upper side inside the protective cover 3. An air inlet pipe 6 for gas transportation is fixedly installed on the left side of the inner wall of the air inlet cavity 4, and an air outlet pipe 7 for gas transportation is fixedly installed on the right side of the inner wall of the air outlet cavity 5. A partition plate 8 for vertical separation is fixedly installed in the middle of the inner wall of the protective cover 3. And a first air exchange mechanism 9 for gas conversion is provided on the lower side of the top surface of the fixing frame 1 inside the protective cover 3;

[0039] On the left and right sides of the top surface of the partition plate 8, there are spiral tubes 10 for adsorbing gas. And inside the spiral tubes 10, there are several drying mechanisms 11 for adsorbing and drying gas. The upper and lower ends of the two spiral tubes 10 are fixedly installed with L-shaped bellows 12 for adapting to vertical deformation. The corrugated structure of the L-shaped bellows 12 can ensure that during the up and down movement of the transmission vertical rod 1106, it can also adapt to the vertical displacement deformation, ensuring the sealing effect of the gas passing through the pipeline structure inside the device. On the upper side of the inner wall of the protective cover 3, in front of the air outlet cavity 5, there are two push vertical grooves 13 for up and down movement. And on the upper side of the inner walls of the two push vertical grooves 13, there are second air exchange mechanisms 14 for gas conversion. The first air exchange mechanism 9 includes two support blocks 901 fixedly connected to the top surface of the fixing frame 1. And on the top surfaces of the two support blocks 901, a conversion shell 902 for limiting is fixedly installed together. A double-port plate 903 for gas conversion to pass through is slidably installed on the inner wall of the conversion shell 902. On the lower side of the inner wall of the conversion shell 902, right below the L-shaped bellows 12, there is a ventilation opening 904. On the left and right sides of the front side of the inner wall of the conversion shell 902, there are first sliding openings 905 for sliding. At the center of the upper side of the inner wall of the conversion shell 902, there is a second sliding opening 906 for sliding. On the left side of the inner wall of the protective cover 3, on one side of the conversion shell 902, an electric telescopic rod 907 for pushing is fixedly installed. And the output end of the electric telescopic rod 907 penetrates the surface of the conversion shell 902 and is fixedly connected to the left side of the double-port plate 903;

[0040] On the top surface of the double-port plate 903, two symmetric first sealing arc plates 909 are fixedly installed through a connecting block 908. And the bottom surface of the first sealing arc plate 909 is slidably connected to the top surface of the conversion shell 902. In front of the double-port plate 903, on one side of the two first sliding openings 905, a top rod 910 for pushing is rotatably connected through a rotating shaft. On one side of the first sealing arc plate 909, on the pipe walls of the lower two L-shaped bellows 12, there are first air exchange openings 911 for air exchange.

[0041] The drying mechanism 11 includes a drying shell 1101 fixedly connected to the inner wall of the spiral tube 10. On the upper and lower sides of the inner wall of the drying shell 1101, water-absorbing sponge columns 1102 for adsorption are fixedly installed together. A spiral plate 1103 for spiral air supply is fixedly installed on the peripheral side of the water-absorbing sponge column 1102, and the surface of the spiral plate 1103 is fixedly connected to the inside of the drying shell 1101. A number of ventilation openings 1104 for ventilation are opened on the opposite sides of the surface of the drying shell 1101;

[0042] On the top surface of the partition plate 8, transfer vertical rods 1106 for pushing and transferring are slidably installed inside both spiral tubes 10. The rod arms of the transfer vertical rods 1106 are fixedly connected to the surface of the spiral tube 10 through a number of fixed orifice plates 1107. On the lower sides of the rod arms of the two transfer vertical rods 1106, a thrust spring 1108 for assisting in pushing is fixedly installed through a fixed limiting ring 1109, and the lower end of the thrust spring 1108 is fixedly connected to the top surface of the partition plate 8. The second air exchange mechanism 14 includes a limiting vertical rod 1401 fixedly connected to the upper side of the inner wall of the pushing vertical groove 13. The rod arm of the limiting vertical rod 1401 is embedded and connected to the upper end of the transfer vertical rod 1106. The upper end of the transfer vertical rod 1106 is rotatably connected through two groups of fixed blocks 1402 to a pushing inclined plate 1403 for pushing. The rear sides of the two pushing inclined plates 1403 are rotatably connected together to a gas-blocking port block 1404. The air outlet cavity 5 and the air inlet cavity 4 are communicated through two connecting vertical pipes 1405, and the bottom surface of the connecting vertical pipe 1405 is in close contact with the top surface of the port block 1404. The tight fit between the connecting vertical pipes 1405 and the L-shaped corrugated pipes 12 in the device and the plate body is all sealed. The connection using a sealing ring or a sealing material can avoid the leakage problem of gas at the connection position and ensure the basic use function of the device;

[0043] On the rear sides of the tube walls of the two upper L-shaped corrugated pipes 12, second air exchange openings 1406 for air exchange are opened. The top surface of the upper L-shaped corrugated pipe 12 is in close contact with the bottom surface of the port block 1404. On the rear sides of the second air exchange openings 1406 on the bottom surfaces of the two port blocks 1404, second sealing arc plates 1407 for sealing are fixedly connected. On the left and right sides of the two port blocks 1404, guiding grooves 1408 for limiting and guiding are opened, and an L-shaped support block 1409 for support is slidably connected inside the guiding grooves 1408.

[0044] Among them, the surface of the double-port plate 903 is closely attached to the inside of the conversion shell 902, and both orifices of the double-port plate 903 are square. The two air vents 904 have the same shape and size as the orifices of the double-port plate 903. The surface of the connecting block 908 is closely attached to the inner wall of the second sliding orifice 906. The upper ends of the two upper L-shaped corrugated pipes 12 both penetrate through the upper side of the inner wall of the protective cover 3 and extend into the interior of the air outlet cavity 5. The lower ends of the two lower L-shaped corrugated pipes 12 both penetrate through the top surface of the partition plate 8 and extend to the bottom surface of the partition plate 8. The lower ends of the two lower L-shaped corrugated pipes 12 both penetrate through the top surface of the conversion shell 902 and extend into the interior of the conversion shell 902, and the lower ends of the L-shaped corrugated pipes 12 are in contact with the top surface of the double-port plate 903. The surfaces of the two rotating shafts extend to the surface of the conversion shell 902 through the inside of the first sliding orifice 905. The surfaces of several drying shells 1101 penetrate through the inner wall of the spiral pipe 10 and extend to the surface of the spiral pipe 10. The drying shell 1101 is a U-shaped block structure with a circular cavity formed inside. The circular cavity of the drying shell 1101 is conducive to the spiral transportation of gas and ensures the gas transportation speed.

[0045] Specifically, the air vents 1104 arranged oppositely inside the drying shell 1101 are arranged in an up-and-down opposite manner, and the air vents 1104 are arranged at the highest and lowest positions on the same side of the spiral plate 1103. The rear sides of the rod arms of the two transfer vertical rods 1106 are respectively rotatably connected to the surfaces of the corresponding ejector rods 910. The rear sides of the two baffle blocks 1404 respectively penetrate through the rear sides of the inner walls of the corresponding push vertical grooves 13 and extend into the interior of the air outlet cavity 5. The orifices of the two baffle blocks 1404 are both circular. The two first sealing arc plates 909 and the two second sealing arc plates 1407 are both arc-shaped semi-circular structures, and a sealing silica gel pad is provided inside the semi-circular structure. The bottom surfaces of several L-shaped support blocks 1409 are fixedly connected to the lower side of the inner wall of the air outlet cavity 5.

[0046] The working principle of the above embodiment is as follows:

[0047] When the device is in use, connect the inlet pipe 6 to the chemical gas delivery device, connect the outlet pipe 7 to the tail gas treatment device, and the detection end of the chromatograph 2 is arranged at the lower side inside the protective cover 3, so as to ensure the progress of gas analysis work;

[0048] The gas passing through the intake pipe 6 will enter the intake cavity 4 and then enter the baffle block 1404 through the connecting vertical pipe 1405. At this time, the baffle blocks 1404 are arranged one in front of the other, so as to ensure that the orifice of the front baffle block 1404 coincides with the orifice of the connecting vertical pipe 1405. Here, we define the direction of the front baffle block 1404 as the left side. The left and right gases are connected to the upper L-shaped corrugated pipe 12 through the inside of the left baffle block 1404, so as to ensure the effect that the gas passing through the left connecting vertical pipe 1405 is directly transported to the L-shaped corrugated pipe 12 without entering the outlet cavity 5. In this way, the rear side setting of the right baffle block 1404 will cause the connecting vertical pipe 1405 to contact the surface of the right baffle block 1404, which cannot ensure the gas transportation. However, at this time, the second sealing arc plate 1407 on the right side is separated from the second ventilation port 1406 on the right side, so as to ensure that the gas in the right spiral pipe 10 can enter the outlet cavity 5 and be discharged from the device through the outlet pipe 7 in the outlet cavity 5;

[0049] When chemical gas enters the left spiral pipe 10 through the left L-shaped corrugated pipe 12, under the spiral transportation and acceleration of the spiral pipe 10, the gas enters the drying shell 1101 through a number of ventilation ports 1104. In this way, under the spiral transportation of the spiral plate 1103, the transportation speed of the gas is further increased, and it can be ensured that the large particle impurities in the gas are concentrated at the position of the water-absorbing sponge column 1102, and the water-absorbing sponge column 1102 can adsorb the moisture in the gas to ensure that the gas passing through the drying shell 1101 is dried and deashed. Because of the large particle impurities, their movement is mainly affected by factors such as the pushing force of the spiral plate 1103, their own gravity, and the friction with the conveying pipe wall and other materials. Usually, the large particle impurities will rotate along the direction of the spiral plate 1103. Since the spiral plate 1103 is inclined and centered, the large particle impurities will be subjected to an inclined inward rotational concentration force, and thus, under the action of the gas spiral transportation, the large particle impurities will gather towards the middle;

[0050] The gas passing through the spiral tube 10 will enter the conversion shell 902 along with the L-shaped bellows 12 on the left side. At this time, the orifice of the double-port plate 903 in the conversion shell 902 coincides with the pipe wall of the L-shaped bellows 12 on the left side, which can ensure that the gas enters the lower side of the partition plate 8 through the double-port plate 903 and the air-permeable port 904. In this way, the gas will come into contact with the detection end of the chromatograph 2 and be analyzed and detected by the chromatograph 2. When the orifice of the double-port plate 903 coincides with the L-shaped bellows 12 on the left side, the first sealing arc plate 909 is in close contact with the first air exchange port 911 at this time, and the first air exchange port 911 in the right L-shaped bellows 12 is in a switched state. In this way, the gas under the partition plate 8 will enter the spiral tube 10 on the right side through the first air exchange port 911 on the right side. Inside the right spiral tube 10, the flowing gas will dry the water-absorbing sponge column 1102 in the right spiral tube 10 and enter the air outlet cavity 5 through the second air exchange port 1406 on the right side, and be led out of the device through the air outlet pipe 7, thus completing a working cycle. That is, after being filtered and dried by the spiral tube 10 on the left side, the spiral tube 10 on the right side dries the internal material. When the material in the left spiral tube 10 has been used for a period of time, the double-port plate 903 is pushed to move by the electric telescopic rod 907. At this time, the double-port plate 903 pushes the left transfer vertical rod 1106 to move upward through the left ejector rod 910. And while the double-port plate 903 is pushed to move to the right side, the right ejector rod 910 will pull the right transfer vertical rod 1106 to move downward. Therefore, the upward movement of the left transfer vertical rod 1106 will drive the stop block 1404 to move to the rear side of the connecting vertical pipe 1405 by pushing the inclined plate 1403. Further, the second sealing arc plate 1407 will move away from the second air exchange port 1406, and thus the second air exchange port 1406 on the left side is in an open state. And the downward movement of the right transfer vertical rod 1106 will drive the stop block 1404 to move to the front side of the connecting vertical pipe 1405 by pushing the inclined plate 1403. Further, the second sealing arc plate 1407 will approach the second air exchange port 1406, and at this time the orifice of the stop block 1404 coincides with the connecting vertical pipe 1405. Further, it can ensure that the gas enters the spiral tube 10 on the right side through the connecting vertical pipe 1405 and the stop block 1404 on the right side. At this time, the second air exchange port 1406 on the right side is in a pipe wall state. Therefore, this process is to use the above structure by swapping left and right. Therefore, the above structure is used by swapping left and right, which can ensure that the gas passes through the dried water-absorbing sponge column 1102 on the right side and can dry the wet water-absorbing sponge column 1102 on the left side, ensuring the overall use effect of the device and avoiding the problem of replacing the adsorption material.

[0051] The installation method, connection method, or setting method disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented. In addition, the electrical components that appear in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can achieve the control of the electrical components through simple programming, and the existing publicly disclosed power connection technologies also belong to the common general knowledge in this field. Therefore, the specific structural composition and working principle will not be elaborated too much in this embodiment.

Claims

1. A gas analysis device for chemical production, comprising a fixing frame (1) and a chromatograph (2) fixedly installed inside the fixing frame (1) for analyzing gases, characterized in that: A protective cover (3) for gas transmission is fixedly installed on the top surface of the fixing frame (1). An air inlet cavity (4) and an air outlet cavity (5) are successively formed from top to bottom on the upper side inside the protective cover (3). A gas inlet pipe (6) for gas transmission is fixedly installed on the left side of the inner wall of the air inlet cavity (4), and a gas outlet pipe (7) for gas transmission is fixedly installed on the right side of the inner wall of the air outlet cavity (5). A partition plate (8) for vertical separation is fixedly installed in the middle of the inner wall of the protective cover (3). A first air exchange mechanism (9) for gas conversion is arranged on the lower side of the top surface of the fixing frame (1) inside the protective cover (3). Spiral tubes (10) for adsorbing gas are arranged on both the left and right sides of the top surface of the partition plate (8). A number of drying mechanisms (11) for adsorbing dry gas are arranged inside the spiral tubes (10). L-shaped bellows (12) for adapting to vertical deformation are fixedly installed at both the upper and lower ends of the two spiral tubes (10). Two push vertical grooves (13) for vertical movement are formed on the upper side of the inner wall of the protective cover (3) in front of the air outlet cavity (5). Second air exchange mechanisms (14) for gas conversion are arranged on the upper sides of the inner walls of the two push vertical grooves (13). The first air exchange mechanism (9) includes two support blocks (901) fixedly connected to the top surface of the fixing frame (1). A conversion shell (902) for limiting is fixedly installed on the common top surface of the two support blocks (901). A double-port plate (903) for gas conversion to pass through is slidably installed on the inner wall of the conversion shell (902). Two symmetric first sealing arc plates (909) are fixedly installed on the top surface of the double-port plate (903) through a connecting block (908). First air exchange ports (911) for air exchange are formed on one side of the pipe walls of the lower two L-shaped bellows (12) located on one side of the first sealing arc plate (909). Second air exchange ports (1406) for air exchange are formed on the rear sides of the pipe walls of the upper two L-shaped bellows (12).

2. The gas analysis device for chemical production according to claim 1, characterized in that: A ventilation port (904) is formed on the lower side of the inner wall of the conversion shell (902) directly below the L-shaped bellows (12). First sliding ports (905) for sliding are formed on the left and right sides of the front side of the inner wall of the conversion shell (902). A second sliding port (906) for sliding is formed at the center of the upper side of the inner wall of the conversion shell (902). An electric telescopic rod (907) for pushing is fixedly installed on the left side of the inner wall of the protective cover (3) on one side of the conversion shell (902). The output end of the electric telescopic rod (907) penetrates the surface of the conversion shell (902) and is fixedly connected to the left surface of the double-port plate (903). The bottom surface of the first sealing arc plate (909) is slidably connected to the top surface of the conversion shell (902). A push rod (910) for pushing is rotatably connected to the front side of the double-port plate (903) on one side of the two first sliding ports (905) through a rotating shaft.

3. The gas analysis device for chemical production according to claim 2, characterized in that: The drying mechanism (11) includes a drying shell (1101) fixedly connected to the inner wall of the spiral tube (10). On the upper and lower sides of the inner wall of the drying shell (1101), a water-absorbing sponge column (1102) for adsorption is fixedly installed. On the peripheral side of the water-absorbing sponge column (1102), a spiral plate (1103) for spiral air supply is fixedly installed, and the surface of the spiral plate (1103) is fixedly connected to the inside of the drying shell (1101). On the opposite sides of the surface of the drying shell (1101), a number of ventilation openings (1104) for ventilation are provided. On the top surface of the partition plate (8), a transfer vertical rod (1106) for pushing and transferring is slidably installed inside both spiral tubes (10). The rod arm of the transfer vertical rod (1106) is fixedly connected to the surface of the spiral tube (10) through a number of fixed orifice plates (1107). On the lower sides of the rod arms of the two transfer vertical rods (1106), a thrust spring (1108) for assisting in pushing is fixedly installed through a fixed limit ring (1109), and the lower end of the thrust spring (1108) is fixedly connected to the top surface of the partition plate (8).

4. A gas analysis device for chemical production according to claim 3, characterized in that: The second ventilation mechanism (14) includes a limit vertical rod (1401) fixedly connected to the upper side of the inner wall of the push vertical groove (13). The rod arm of the limit vertical rod (1401) is embedded and connected to the upper end of the transfer vertical rod (1106). The upper end of the transfer vertical rod (1106) is rotatably connected through two groups of fixed blocks (1402) to a push inclined plate (1403) for pushing. Behind the two push inclined plates (1403), a blocking port block (1404) for blocking air is rotatably connected. The air outlet cavity (5) and the air inlet cavity (4) are communicated through two connecting vertical pipes (1405), and the bottom surface of the connecting vertical pipe (1405) is in close contact with the top surface of the blocking port block (1404). The top surface of the upper L-shaped corrugated pipe (12) is in close contact with the bottom surface of the blocking port block (1404). On the rear side of the second ventilation opening (1406) on the bottom surfaces of the two blocking port blocks (1404), a second sealing arc plate (1407) for sealing is fixedly connected. On the left and right sides of the two blocking port blocks (1404), a guiding groove (1408) for limiting and guiding is provided, and an L-shaped support block (1409) for support is slidably connected inside the guiding groove (1408).

5. The gas analysis device for chemical production according to claim 4, characterized in that: The surface of the double-port plate (903) is in close contact with the inside of the conversion shell (902). The two holes of the double-port plate (903) are both square. The two ventilation openings (904) have the same shape and size as the holes of the double-port plate (903). The surface of the connecting block (908) is in close contact with the inner wall of the second sliding opening (906).

6. The gas analysis device for chemical production according to claim 4, characterized in that: The upper ends of the two L-shaped bellows (12) on the upper side all penetrate through the upper side of the inner wall of the protective cover (3) and extend into the interior of the air outlet cavity (5). The lower ends of the two L-shaped bellows (12) on the lower side all penetrate through the top surface of the partition plate (8) and extend to the bottom surface of the partition plate (8). The lower ends of the two L-shaped bellows (12) on the lower side all penetrate through the top surface of the conversion shell (902) and extend into the interior of the conversion shell (902), and the lower ends of the L-shaped bellows (12) are in contact with the top surface of the double-port plate (903).

7. The gas analysis device for chemical production according to claim 4, characterized in that: The surfaces of the two rotating shafts extend to the surface of the conversion shell (902) through the inside of the first sliding port (905). The surfaces of several drying shells (1101) penetrate through the inner wall of the spiral tube (10) and extend to the surface of the spiral tube (10), and the drying shell (1101) is a U-shaped block structure with a circular cavity formed inside it.

8. The gas analysis device for chemical production according to claim 4, characterized in that: The air vents (1104) arranged oppositely in the drying shell (1101) are arranged up and down oppositely, and the air vents (1104) are arranged at the highest and lowest positions on the same side of the spiral plate (1103). The rear sides of the rod arms of the two transfer vertical rods (1106) are respectively rotatably connected to the surfaces of the corresponding ejector rods (910).

9. The gas analysis device for chemical production according to claim 8, wherein: The rear sides of the two stop block openings (1404) respectively penetrate through the rear sides of the inner walls of the corresponding push vertical grooves (13) and extend into the interior of the air outlet cavity (5), and the openings of the two stop block openings (1404) are circularly arranged.

10. A gas analysis device for chemical production according to claim 4, characterized in that: The two first sealing arc plates (909) and the two second sealing arc plates (1407) are both arranged in an arc semi-circular structure, and a sealed silica gel pad is provided inside the semi-circular structure. The bottom surfaces of several L-shaped support blocks (1409) are fixedly connected to the lower side of the inner wall of the air outlet cavity (5).

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