Gas analysis device for chemical production

Abstract

The invention relates to a gas analysis device for chemical production, and belongs to the technical field of gas analysis, the gas analysis device comprises a fixing frame and a chromatographic instrument fixedly installed in the fixing frame and used for analyzing gas, and the top surface of the fixing frame is fixedly provided with a protective cover used for gas conveying. A gas inlet cavity and a gas outlet cavity are sequentially formed in the upper side of the interior of the protective cover from top to bottom, a gas inlet pipe used for conveying gas is fixedly installed on the left side of the inner wall of the gas inlet cavity, and a gas outlet pipe used for conveying gas is fixedly installed on the right side of the inner wall of the gas outlet cavity. The problem of influence of moisture and dust on the device is avoided, and the device adopts two filter dust removal structures which can be alternately used, so that the other filter dust removal structure can be dried while one filter dust removal structure is used, and the problem of frequent replacement of an adsorption material can be avoided by alternately using the two filter dust removal structures; and the continuous operation effect of the device can be ensured.

Description

Technical Field

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

[0002] Gas analysis is an analytical method that uses the different physical and chemical properties of various gases to determine the composition of a mixed gas. In chemical production, for normal and safe production, various industrial gases need to be analyzed to understand their composition. The gas analysis devices used in chemical production are generally chromatographs.

[0003] However, during the use of the gas analysis device, the gases to be analyzed are from the chemical production process, so the gases may contain dust and moisture. Dust particles may block components such as the sample inlet, pipeline, or filter of the gas analysis instrument, hindering the normal flow of the gas, resulting in the instrument being unable to work properly or the measurement results being inaccurate. And moisture may cause the detector of the gas analysis instrument to be 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 can not only avoid the problem of frequent replacement of the adsorption material but also 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 fixed frame and a chromatograph fixedly installed inside the fixed frame for analyzing gases. The top surface of the fixed 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 chamber and an air outlet chamber from top to bottom. The left side of the inner wall of the air inlet chamber is fixedly installed with an air inlet pipe for transporting gases. The right side of the inner wall of the air outlet chamber is fixedly installed with an air outlet pipe for transporting gases. The middle part of the inner wall of the protective cover is fixedly installed with a partition plate for vertical separation. And below the protective cover inside the top surface of the fixed frame, there is a first air conversion mechanism for gas conversion. 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 moving up and down, and on the upper side of the inner walls of the two push vertical grooves, there are second air exchange mechanisms for gas conversion.

[0007] Furthermore, the first air exchange mechanism includes two support blocks fixedly connected to the top surface of the fixed frame, and a conversion shell for limiting is fixedly installed on the common top surface of the two support blocks. A double-port plate for gas conversion to pass through is slidably installed on the inner wall of the conversion shell. An air vent is opened on the lower side of the inner wall of the conversion shell and directly below the L-shaped bellows. On the left and right sides of the front side of the inner wall of the conversion shell, there are first sliding ports for sliding, and at the center of the upper side of the inner wall of the conversion shell, there is a second sliding port 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, and the output end of the electric telescopic rod penetrates the surface of the conversion shell and is fixedly connected to the left side of the double-port plate; On the top surface of the double-port plate, two symmetric first sealing arc plates are fixedly installed through connection blocks, and the bottom surface of the first sealing arc plate is slidably connected to the top surface of the conversion shell. On the front side of the double-port plate and on one side of the two first sliding ports, there is a push rod rotatably connected through a rotating shaft. On the side of the first sealing arc plate, the pipe walls of the lower two L-shaped bellows are all provided with first air exchange ports for air exchange.

[0008] 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. On the peripheral side of the water-absorbing sponge column, there is a spiral plate for spiral air supply, 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 air vents for ventilation; On the top surface of the partition plate and inside the two spiral tubes, there are transfer vertical rods for pushing and transferring, and the rod arms of the transfer vertical rods are fixedly connected to the surface of the spiral tubes through several fixed orifice plates. On the lower side of the rod arms of the two transfer vertical rods, there is a thrust spring for auxiliary pushing fixedly installed through a fixed limiting ring, and the lower end of the thrust spring is fixedly connected to the top surface of the partition plate.

[0009] Further, 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 transfer vertical rod. The upper end of the transfer 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; On the rear sides of the pipe walls of the two upper L-shaped bellows, second air exchange ports for air exchange are provided, and the top surface of the upper L-shaped bellows is closely attached to the bottom surface of the blocking port block. On the rear sides of the bottom surfaces of the two blocking port blocks located at the second air exchange ports, second sealing arc plates for sealing are fixedly connected. On the left and right sides of the two blocking port blocks, guiding grooves for limiting and guiding are provided, and L-shaped supporting blocks for supporting are slidably connected inside the guiding grooves.

[0010] Further, 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 ports 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 port.

[0011] Further, the upper ends of the two upper L-shaped bellows both penetrate through the upper side of the inner wall of the protective cover and extend to the inside of the air outlet cavity. The lower ends of the two lower L-shaped bellows both 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 both penetrate through the top surface of the conversion shell and extend to the inside of the conversion shell, and the lower ends of the L-shaped bellows are in contact with the top surface of the double-port plate.

[0012] Further, the surfaces of the two rotating shafts extend to the surface of the conversion shell through the inside of the first sliding port. 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.

[0013] Further, the ventilation ports arranged oppositely in the drying shell are arranged oppositely up and down, and the ventilation ports 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 transfer vertical rods are respectively rotatably connected to the surfaces of the corresponding top rods.

[0014] Further, the backs of the two blocking port blocks respectively penetrate through the rear sides of the inner walls of the corresponding pushing vertical grooves and extend to the inside of the air outlet cavity, and the holes of the two blocking port blocks are both circular.

[0015] Further, the two first sealing arc plates and the two second sealing arc plates are both arranged in an arc semi-circular structure, and a sealing silica gel pad is provided inside the semi-circular structure. The bottom surfaces of several L-shaped supporting blocks are fixedly connected to the lower side of the inner wall of the air outlet cavity.

[0016] Compared with the prior art, the present invention provides a gas analysis device for chemical production, which has the following beneficial effects: 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. By alternately using the two filter and dust removal structures, not only can the problem of frequent replacement of the adsorption material be avoided, but also the continuous operation effect of the device can be ensured.

[0017] 2. By utilizing the penetration effect of the drying shell, the material 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.

[0018] 3. By arranging the ventilation ports up and down, the device can ensure that the gas passes through the spiral plate smoothly. Moreover, 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.

[0019] 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. Moreover, 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 vertical pipe and the L-shaped corrugated pipe and its connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional view of the overall structure of the present invention; Figure 2 is a three-dimensional view of the vertical section of the protective cover of the present invention; Figure 3 is of the present invention Figure 2 Schematic diagram of the enlarged structure of part A; Figure 4 is of the present invention Figure 2 Schematic diagram of the enlarged structure of part B; Figure 5 is a three-dimensional view of the partition plate of the present invention; Figure 6 is of the present invention Figure 5 Schematic diagram of the enlarged structure of part C; Figure 7 is a three-dimensional view of the vertical section of the conversion shell of the present invention; Figure 8 is a three-dimensional view of the horizontal section of the spiral pipe of the present invention; Figure 9 is of the present invention Figure 8 Schematic diagram of the enlarged structure of part D; Figure 10 This is a sectional perspective view of the drying mechanism of the present invention; Figure 11 This is a perspective view of the first sealing arc plate of the present invention.

[0021] In the figure: 1, fixed frame; 2, chromatograph; 3, protective cover; 4, intake cavity; 5, exhaust cavity; 6, intake pipe; 7, exhaust pipe; 8, partition plate; 9, first air exchange 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 air exchange port; 10, spiral tube; 11, drying mechanism; 1101, drying shell; 1102, water-absorbing sponge column; 1103, spiral plate; 1104, air vent; 1106, transfer vertical rod; 1107, fixed orifice plate; 1108, thrust spring; 1109, limiting ring; 12, L-shaped corrugated pipe; 13, push vertical groove; 14, second air exchange mechanism; 1401, limiting vertical rod; 1402, fixed block; 1403, push inclined plate; 1404, stop port block; 1405, connecting vertical pipe; 1406, second air exchange port; 1407, second sealing arc plate; 1408, guiding groove; 1409, L-shaped support block. Specific embodiments

[0022] 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.

[0023] Please refer to Figures 1 to 11 , a gas analysis device for chemical production in this embodiment, includes a fixed frame 1 and a chromatograph 2 fixedly installed inside the fixed frame 1 for analyzing gases. 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 the device will not be described in detail here. A protective cover 3 for gas transportation is fixedly installed on the top surface of the fixed frame 1, and an intake cavity 4 and an exhaust cavity 5 are successively opened from top to bottom on the upper side inside the protective cover 3. An intake pipe 6 for transporting gases is fixedly installed on the left side of the inner wall of the intake cavity 4, and an exhaust pipe 7 for transporting gases is fixedly installed on the right side of the inner wall of the exhaust cavity 5. A partition plate 8 for upper and lower 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 fixed frame 1 inside the protective cover 3; On the left and right sides of the top surface of the partition plate 8, there are spiral tubes 10 for adsorbing gas, and there are several drying mechanisms 11 for adsorbing dry gas inside the spiral tubes 10. The upper and lower ends of the two spiral tubes 10 are fixedly installed with L-shaped bellows 12 for adapting to up and down 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 deformation of up and down displacement, ensuring the sealing effect of the gas passing through the pipeline structure in the device. On the upper side of the inner wall of the protective cover 3 and in front of the air outlet cavity 5, there are two pushing vertical grooves 13 for up and down movement, and on the upper side of the inner walls of the two pushing 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 fixed frame 1, and on the top surfaces of the two support blocks 901, there is a conversion shell 902 for limiting fixedly installed. Inside the conversion shell 902, there is a double-port plate 903 slidably installed for gas conversion to pass through. On the lower side of the inner wall of the conversion shell 902 and directly 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 and on one side of the conversion shell 902, there is an electric telescopic rod 907 for pushing 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 surface of the double-port plate 903; On the top surface of the double-port plate 903, there are two symmetrically arranged first sealing arc plates 909 fixedly installed through connection blocks 908, and the bottom surface of the first sealing arc plates 909 is slidably connected to the top surface of the conversion shell 902. In front of the double-port plate 903 and on one side of the two first sliding openings 905, there is a top rod 910 rotatably connected through a rotating shaft. On the side of the first sealing arc plates 909, there are first air exchange openings 911 for air exchange on the pipe walls of the lower two L-shaped bellows 12.

[0024] 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, there are water-absorbing sponge columns 1102 for adsorption fixedly installed together. On the peripheral side of the water-absorbing sponge columns 1102, there are spiral plates 1103 for spiral air supply fixedly installed, and the surface of the spiral plates 1103 is fixedly connected to the inside of the drying shell 1101. On the opposite sides of the surface of the drying shell 1101, there are several ventilation openings 1104 for ventilation; On the top surface of the partition plate 8, there are transfer vertical rods 1106 for pushing and transferring, which are slidably installed inside both of the spiral tubes 10. The rod arms of the transfer vertical rods 1106 are fixedly connected to the surface of the spiral tubes 10 through a number of fixed orifice plates 1107. On the lower sides of the rod arms of the two transfer vertical rods 1106, there is a thrust spring 1108 for auxiliary pushing, which 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, and 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 sets of fixed blocks 1402 with a pushing inclined plate 1403 for pushing, and the rear surfaces of the two pushing inclined plates 1403 are jointly rotatably connected with a blocking port block 1404 for blocking air. 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 tight fit between the connecting vertical pipes 1405 and the L-shaped bellows 12 in the device and the plate body has been sealed. The connection using sealing rings or sealing materials can avoid the leakage problem of gas at the connection position and ensure the basic use function of the device; On the rear sides of the tube walls of the two upper L-shaped bellows 12, there are second air exchange openings 1406 for air exchange, and the top surface of the upper L-shaped bellows 12 is in close contact with the bottom surface of the blocking port block 1404. On the rear sides of the second air exchange openings 1406 on the bottom surfaces of the two blocking port blocks 1404, there are second sealing arc plates 1407 for sealing. On the left and right sides of the two blocking port blocks 1404, there are guiding grooves 1408 for limiting and guiding, and the inside of the guiding grooves 1408 is slidably connected with L-shaped supporting blocks 1409 for support.

[0025] Among them, the surface of the double-port plate 903 is tightly fitted with the interior of the conversion shell 902, and the two holes of the double-port plate 903 are both square, the two air holes 904 are set in the same shape and size as the holes of the double-port plate 903, the surface of the connecting block 908 is tightly fitted with the inner wall of the second sliding port 906, the upper ends of the two upper L-shaped bellows 12 pass through the upper side of the inner wall of the protective cover 3 and extend to the inside of the air outlet cavity 5, the lower ends of the two lower L-shaped bellows 12 pass through the top surface of the partition plate 8 and extend to the bottom surface of the partition plate 8, and the two lower L-shaped bellows The lower ends of the L-shaped bellows 12 penetrate the top surface of the conversion shell 902 and extend to the inside of the conversion shell 902, and the lower end of the L-shaped bellows 12 contacts 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 port 905, the surfaces of the drying shells 1101 penetrate 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 opened therein, and the circular cavity drying shell 1101 is conducive to the spiral transportation of gas and ensures the gas transportation speed.

[0026] Specifically, the vents 1104 oppositely arranged in the drying shell 1101 are arranged oppositely up and down, and the vents 1104 are arranged at the highest position and the lowest position on the same side of the spiral plate 1103, the rear sides of the two transfer vertical rods 1106 are respectively rotatably connected to the surfaces of the corresponding push rods 910, the rear sides of the two stopper blocks 1404 respectively penetrate the rear sides of the inner walls of the corresponding push vertical grooves 13 and extend to the inside of the air outlet cavity 5, and the openings of the two stopper blocks 1404 are both circular, the two first sealing arc plates 909 and the two second sealing arc plates 1407 are both arranged in an arc-shaped semicircular structure, and a sealed silicone pad is provided inside the semicircular structure, and the bottom surfaces of the several L-shaped support blocks 1409 are fixedly connected to the lower side of the inner wall of the air outlet cavity 5.

[0027] The working principle of the above embodiment is: When the device is in use, the air inlet pipe 6 is connected to the chemical gas delivery device, the air outlet pipe 7 is connected to the tail gas treatment device, and the detection end of the chromatograph 2 is located at the lower side of the protective cover 3, so that the gas analysis work can be carried out; 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, which can 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 air outlet cavity 5. In this way, the rear side of the right baffle block 1404 is arranged, which will cause the connecting vertical pipe 1405 to contact the surface of the right baffle block 1404 and cannot ensure the gas transportation. However, at this time, the second sealing arc plate 1407 on the right side is separated from the second air exchange port 1406 on the right side, which will ensure that the gas in the right spiral pipe 10 can enter the air outlet cavity 5 and be discharged from the device through the outlet pipe 7 in the air outlet cavity 5; When the 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 ensure 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 force 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 arranged obliquely and centered, the large particle impurities will be subjected to an inclined inward rotational concentration force. Therefore, under the action of the gas spiral transportation, the large particle impurities will gather towards the middle; 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 tube 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 contact 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 L-shaped bellows 12 on the right side 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 spiral tube 10 on the right side, the flowing gas will dry the water-absorbing sponge column 1102 in the spiral tube 10 on the right side, 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 is 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, the ejector rod 910 on the right will pull the transfer vertical rod 1106 on the right to move downward. Therefore, the upward movement of the left transfer vertical rod 1106 will drive the blocking port block 1404 to move to the rear side of the connecting vertical pipe 1405 by pushing the inclined plate 1403. Furthermore, 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. While the downward movement of the transfer vertical rod 1106 on the right will drive the blocking port block 1404 to move to the front side of the connecting vertical pipe 1405 by pushing the inclined plate 1403. Furthermore, the second sealing arc plate 1407 will approach the second air exchange port 1406, and at this time the orifice of the blocking port block 1404 coincides with the connecting vertical pipe 1405, which can ensure that the gas enters the spiral tube 10 on the right side through the connecting vertical pipe 1405 and the blocking port 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.

[0028] The installation methods, connection methods or setting methods 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 appearing 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 realize the control of the electrical components through simple programming, and the existing publicly disclosed power connection technologies also belong to the common 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 fixed frame (1) and a chromatograph (2) for analyzing gas fixedly mounted inside the fixed frame (1), characterized in that: A protective cover (3) for gas delivery is fixedly mounted on the top surface of the fixing frame (1), and an air inlet cavity (4) and an air outlet cavity (5) are sequentially provided on the upper side of the interior of the protective cover (3) from top to bottom; an air inlet pipe (6) for gas delivery is fixedly mounted on the left side of the inner wall of the air inlet cavity (4), and an air outlet pipe (7) for gas delivery is fixedly mounted on the right side of the inner wall of the air outlet cavity (5); a partition plate (8) for upper and lower separation is fixedly mounted on the middle of the inner wall of the protective cover (3), and a first ventilation mechanism (9) for gas conversion is provided on the top surface of the fixing frame (1) located at the lower side of the interior of the protective cover (3); The left and right sides of the top surface of the partition plate (8) are both provided with spiral tubes (10) for adsorbing gas, and the interior of the spiral tubes (10) is provided with a plurality of drying mechanisms (11) for adsorbing dry gas, and the upper and lower ends of the two spiral tubes (10) are both fixedly installed with L-shaped corrugated tubes (12) for adapting to upward and downward deformation, and the upper side of the inner wall of the protective cover (3) is located at the front side of the air outlet cavity (5) and is provided with two vertical driving grooves (13) for upward and downward movement, and the upper sides of the inner walls of the two vertical driving grooves (13) are both provided with second ventilation mechanisms (14) for gas conversion.

2. A gas analysis device for chemical production according to claim 1, characterized in that: The first ventilation mechanism (9) comprises two support blocks (901) fixedly connected to the top surface of the fixing frame (1), and a conversion shell (902) for limiting is fixedly installed on the top surfaces of the two support blocks (901), and a double-port plate (903) for gas conversion is slidably installed on the inner wall of the conversion shell (902), and a vent (904) is provided on the lower side of the inner wall of the conversion shell (902) located directly below the L-shaped bellows (12), and a first sliding opening (905) for sliding is provided on both the left and right sides of the front side of the inner wall of the conversion shell (902), and a second sliding opening (906) for sliding is provided at the center of the upper side of the inner wall of the conversion shell (902), and an electric telescopic rod (907) for pushing is fixedly installed on the left side of the inner wall of the protective cover (3) located on one side of the conversion shell (902), and the output end of the electric telescopic rod (907) passes through the surface of the conversion shell (902) and is fixedly connected to the left side of the double-port plate (903); The top surface of the double-port plate (903) is fixedly mounted with two left-right symmetrical first sealing arc plates (909) via 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); a push rod (910) for pushing is rotatably connected to one side of the two first sliding ports (905) in front of the double-port plate (903) via a rotating shaft; and the tube walls of the two L-shaped bellows (12) on the lower side, which are located on one side of the first sealing arc plate (909), are both provided with first ventilation ports (911) for ventilation.

3. A gas analysis device for chemical production according to claim 2, characterized in that: The drying mechanism (11) comprises a drying shell (1101) fixedly connected to the inner wall of the spiral tube (10), and water-absorbing sponge columns (1102) for adsorption are fixedly installed on the upper and lower sides of the inner wall of the drying shell (1101), a spiral plate (1103) for spiral air supply is fixedly installed on the circumference 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), and a plurality of ventilation holes (1104) for ventilation are opened on the opposite side of the surface of the drying shell (1101); The top surface of the partition plate (8) is located inside the two spiral tubes (10), and a transfer vertical rod (1106) for pushing and transmitting is slidably installed thereon, and the rod arm of the transfer vertical rod (1106) is fixedly connected to the surface of the spiral tube (10) via a plurality of fixed orifice plates (1107), and a thrust spring (1108) for assisting pushing is fixedly installed on the lower side of the rod arm of the two transfer vertical rods (1106) via 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).

4. A gas analysis device for chemical production according to claim 3, characterized in that: The second ventilation mechanism (14) comprises a limiting vertical rod (1401) fixedly connected to the upper side of the inner wall of the pushing vertical groove (13), and the rod arm of the limiting vertical rod (1401) is embedded and connected with the upper end of the transmission vertical rod (1106), the upper end of the transmission vertical rod (1106) is rotatably connected to a pushing inclined plate (1403) for pushing through two sets of fixed blocks (1402), and the rear ends of the two pushing inclined plates (1403) are rotatably connected to a blocking block (1404) for blocking air, the air outlet cavity (5) and the air inlet cavity (4) are connected through two connecting vertical pipes (1405), and the bottom surface of the connecting vertical pipe (1405) is tightly fitted with the top surface of the blocking block (1404); The rear sides of the tube walls of the two upper L-shaped bellows (12) are each provided with a second ventilation port (1406) for ventilation, and the top surface of the upper L-shaped bellows (12) is tightly fitted with the bottom surface of the stop block (1404), and the bottom surfaces of the two stop blocks (1404) are located at the rear sides of the second ventilation port (1406) and are fixedly connected with a second sealing arc plate (1407) for sealing, and the left and right surfaces of the two stop blocks (1404) are each provided with a guide groove (1408) for limiting guidance, and the inside of the guide groove (1408) is slidably connected with an L-shaped support block (1409) for support.

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

6. A 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 both penetrate the upper side of the inner wall of the protective cover (3) and extend to the interior of the air outlet cavity (5); the lower ends of the two L-shaped bellows (12) on the lower side both penetrate 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 both penetrate the top surface of the conversion shell (902) and extend to 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. A gas analysis device for chemical production according to claim 4, characterized in that: The surfaces of the two rotating shafts extend through the interior of the first sliding opening (905) to the surface of the conversion shell (902), and the surfaces of the plurality of drying shells (1101) penetrate 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 opened therein.

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

9. A gas analysis device for chemical production according to claim 8, characterized in that: The rear sides of the two stopper blocks (1404) respectively penetrate the rear sides of the inner walls of the corresponding vertical push slots (13) and extend to the interior of the air outlet cavity (5), and the openings of the two stopper blocks (1404) are both circular.

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-shaped semicircular structure, and a sealed silicone pad is arranged inside the semicircular structure. The bottom surfaces of the plurality of 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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