A high concentration VOCs explosion-proof detection device

Abstract

The invention discloses a high-concentration VOCs explosion-proof detection device, including a detection integration, wherein the detection integration includes an explosion-proof box, a sampler is fixedly installed on the bottom surface of the inner cavity of the explosion-proof box, a wireless controller is fixedly installed on the inner wall of the explosion-proof box, and a mounting base is installed on the inner wall of the explosion-proof box, wherein the mounting base includes a mounting seat strip; through the mounting base, it is convenient for people to install and disassemble the detector so as to replace the faulty detector, through the gas transmission structure, the exhaust gas can pass through the inside of the detector, through the conversion structure, a detector can monitor the VOCs content in the exhaust gas in real time, through the converter, the conversion structure can be driven to act, and the working states of the two detectors can be changed through the action of the conversion structure, so that the two detectors can alternately monitor the exhaust gas flow in real time, ensure that the real-time monitoring process will not be interrupted during the calibration work, and improve the practicality of the high-concentration VOCs explosion-proof detection device.

Description

Technical Field

[0001] The present invention relates to the field of VOCs detection equipment, and more specifically, to a high-concentration VOCs explosion-proof detection device. Background Art

[0002] Volatile organic compounds, commonly referred to as VOCs, refer to organic compounds with a saturated vapor pressure greater than 70Pa at room temperature and a boiling point below 260°C at normal pressure, or all volatile organic compounds with a vapor pressure greater than or equal to 10Pa at 20°C. High-concentration VOCs explosion-proof detection devices are equipment used in industrial production to detect the VOCs content in exhaust gas. Existing high-concentration VOCs explosion-proof detection devices are mainly composed of explosion-proof housings, samplers, controllers, VOCs detectors, etc. When in use, the sampler first draws the exhaust gas and allows it to flow through the inside of the detector, and then the detector detects the VOCs content in the exhaust gas. The detector then transmits the test results to the receiving terminal through the controller for people to view.

[0003] The existing high-concentration VOCs explosion-proof detection device needs to be calibrated frequently during use. Since only one detector is installed, the detector cannot monitor the VOCs content in the exhaust gas during the calibration process, resulting in the interruption of the real-time monitoring process. In addition, the calibration gas needs to be replaced manually during the calibration process, which has a low degree of automation and is time-consuming and labor-intensive. Therefore, there is an urgent need to design a high-concentration VOCs explosion-proof detection device. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the problems that the existing high-concentration VOCs explosion-proof detection devices in the prior art need to frequently calibrate the detector during use, and since only one detector is installed, the detector cannot monitor the VOCs content in the exhaust gas during the calibration process, resulting in interruption of the real-time monitoring process, and the proofreading process requires manual replacement of the calibration gas, the degree of automation is not high, and it is time-consuming and labor-intensive. The purpose of the present invention is to provide a high-concentration VOCs explosion-proof detection device, which can well solve the problems raised in the background technology.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A high-concentration VOCs explosion-proof detection device includes a detection integration, the detection integration includes an explosion-proof box, a sampler is fixedly installed on the bottom surface of the inner cavity of the explosion-proof box, a wireless controller is fixedly installed on the inner wall of the explosion-proof box, a mounting base is installed on the inner wall of the explosion-proof box, the mounting base includes a mounting seat bar, the mounting seat bar is fixedly connected to the inner wall of the explosion-proof box and is located above the wireless controller, two left holding bars and two right holding bars are fixedly connected to the front of the mounting seat bar, a detector is arranged between the left holding bar and the right holding bar, an explosion-proof door is arranged on the front of the explosion-proof box, a perspective window is arranged on the explosion-proof door, a gas transmission structure is arranged inside the mounting seat bar, the gas transmission structure includes a deflation cavity and a transfer cavity, the deflation cavity and The transfer chambers are all opened inside the mounting seat strip, the detector is connected with the deflation chamber and the transfer chamber, a conversion chamber is provided in the middle of the transfer chamber, a converter is installed on the mounting seat strip, the converter includes a conversion motor, the conversion motor is fixedly installed on the mounting seat strip, a conversion structure is provided inside the transfer chamber, the conversion structure includes a conversion tube, the conversion tube is movably inserted into the interior of the transfer chamber, the conversion tube is transmission-connected to the conversion motor, two isolation mechanisms are provided inside the conversion tube, the isolation mechanism includes an isolation block, the isolation block is fixedly plugged into the conversion tube, a release mechanism is installed on the top surface of the inner cavity of the conversion chamber, the release mechanism includes a release gas cylinder, the release gas cylinder is fixedly connected to the top surface of the inner cavity of the conversion chamber.

[0009] Preferably, the detector includes a detection head, the bottom of the detection head is connected to a mounting support tube, the mounting support tube is movably inserted between the left holding bar and the right holding bar, and the bottom surface of the mounting support tube is connected to a long bend pipe and a short bend pipe, the long bend pipe is connected to the transfer chamber, and the short bend pipe is connected to the deflation chamber.

[0010] Preferably, the mounting base also includes a straightening piece and a clamping piece, and the clamping piece and the straightening piece are respectively fixedly connected to the left and right side surfaces of the mounting support tube. The mounting base also includes a clamping cavity, which is opened inside the left holding bar, and the left side surface of the inner cavity of the clamping cavity is connected with a clamping piston through a clamping spring transmission, and the clamping piston is slidably inserted in the interior of the clamping cavity, and a clamping head is fixedly connected to the other side of the clamping piston, and the other end of the clamping head extends to the outside of the left holding bar and is clamped with the clamping piece, and a pulling rod is fixedly connected to the left side surface of the clamping piston, and the end of the pulling rod extends to the outside of the left holding bar and is fixedly connected with a pulling ring. The ends of the left holding bar and the right holding bar are both provided with chamfered surfaces.

[0011] Preferably, the gas delivery structure also includes an air release pipe, which is movably inserted in the air release cavity, one end of which extends from the inside of the mounting seat strip, two air release holes are provided on the right side surface of the inner cavity of the air release cavity, the short curved pipe is movably inserted in the inner part of the air release hole, an L-shaped air inlet hole is provided on the bottom surface of the inner cavity of the transfer cavity, the long curved pipe is movably inserted in the inner part of the L-shaped air inlet hole, the gas delivery structure also includes an air inlet cavity, the air inlet cavity is provided in the inner part of the mounting seat strip and is located directly above the air release cavity, an air inlet pipe is movably inserted in the inner part of the air release cavity, one end of the air inlet pipe extends from the inner part of the mounting seat strip The air inlet passage is provided on the bottom surface of the inner cavity of the air inlet chamber, and the air inlet passage is connected with the transfer chamber. An air passage aligned with the L-shaped air inlet jack is provided on the top surface of the inner cavity of the transfer chamber. The top of the air passage is open and the opening is arranged on the top surface of the mounting seat strip. A standard air passage is provided on the top surface of the inner cavity of the conversion chamber, and the other end of the standard air passage is open and the opening is arranged on the side surface of the mounting seat strip. The gas delivery structure also includes an internal threaded tube, which is fixedly connected to the side surface of the mounting seat strip and connected with the standard air passage, and a standard gas cylinder is installed on the internal thread of the internal threaded tube.

[0012] Preferably, the converter also includes a conversion shell, which is fixedly connected to the surface of the mounting seat bar, and the conversion motor is located inside the conversion shell. A conversion wheel is provided inside the conversion motor, and the conversion wheel is fixedly sleeved on the output shaft of the conversion motor. Two conversion wires are wound around the outside of the conversion wheel, and the two conversion wires are wound in opposite directions on the outside of the conversion wheel. Upper wire wheels are installed on both left and right side surfaces of the inner cavity of the conversion shell. The converter also includes a lower wire wheel, which is fixedly installed on the top surface of the inner cavity of the transfer cavity. The end of the conversion wire bypasses the upper wire wheel and extends to the inside of the transfer cavity and is fixedly connected to a linkage column head after bypassing the lower wire wheel. The linkage column head is fixedly connected to the surface of the conversion tube.

[0013] Preferably, the conversion structure also includes two conversion pistons, which are respectively fixedly connected to the two ends of the conversion tube, the conversion pistons are slidably inserted in the interior of the transfer chamber, a recessed groove is provided on the bottom surface of the conversion piston, the end surface of the conversion piston away from the conversion tube is connected to a conversion plug through a conversion spring transmission, the conversion plug is slidably inserted in the interior of the transfer chamber, a distance rod is fixedly connected to the end surface of the conversion plug close to the conversion tube, a positioning groove is provided on the bottom surface of the conversion plug, the positioning groove is adapted to the L-shaped air inlet socket, a vent is provided on the end surface of the conversion plug away from the conversion tube, the vent is connected to the transfer chamber, an elastic rope is fixedly connected to the end surface of the conversion plug away from the conversion tube, and the other end of the elastic rope is fixedly connected to the inner wall of the transfer chamber.

[0014] Preferably, the isolation mechanism also includes an isolation chamber, which is opened inside the isolation block, a limit ring is fixedly connected to the inner wall of the isolation chamber, a transfer hole located above the limit ring is opened on the inner wall of the isolation chamber, a guide hole is opened on the top surface of the inner cavity of the isolation chamber, a gas transmission groove is opened on the inner wall of the guide hole, the bottom surface of the inner cavity of the isolation chamber is connected to a correction piston through a compression spring transmission, the correction piston is slidably inserted into the interior of the isolation chamber, an isolation column is fixedly connected to the top surface of the correction piston, and the top end of the isolation column is slidably inserted into the interior of the limit ring and the guide hole.

[0015] Preferably, the release mechanism also includes a release spring, which is fixedly connected to the top surface of the inner cavity of the release cylinder, and the bottom end of the release spring is fixedly connected to a release piston, which is slidably inserted into the interior of the release cylinder, and a release bevel head is fixedly connected to the bottom surface of the release piston, and the bottom end of the release bevel head extends to the outside of the release cylinder and is movably inserted into the interior of the guide hole and rests on the top surface of the isolation column.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. Through detection integration, two detectors can be installed inside the high-concentration VOCs explosion-proof detection device. The installation base makes it convenient for people to install and disassemble the detector so as to replace the faulty detector. The gas transmission structure allows the exhaust gas to pass through the inside of the detector. The conversion structure allows one detector to monitor the VOCs content in the exhaust gas in real time. The converter can drive the conversion structure to operate. The operating state of the two detectors can be changed through the action of the conversion structure, so that the two detectors can alternately monitor the exhaust gas flow in real time, ensuring that the real-time monitoring process will not be interrupted during the calibration work, thereby improving the practicality of the high-concentration VOCs explosion-proof detection device.

[0019] 2. The converter provides driving force for the conversion structure so that the conversion structure can move inside the gas transmission structure. The movement of the conversion structure can connect the detector to the external space so that air can flow inside the detector, providing necessary conditions for zero-point calibration. The detector is controlled by the detection integration to perform zero-point calibration, thereby achieving the purpose of automatic zero-point calibration. The conversion structure can be blocked by the isolation mechanism so that the standard sample gas will not leak. The release mechanism can open the isolation mechanism so that the standard sample gas can pass through the conversion structure and the gas transmission structure into the corresponding detector, thereby providing necessary conditions for range calibration. The detector is controlled by the detection integration to perform range calibration, thereby achieving the purpose of automatic range calibration. No human intervention is required, and the automation is high, thereby improving the practicality of the high-concentration VOCs explosion-proof detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the internal structure;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of the mounting base;

[0023] Figure 4 For the present invention Figure 3 A top view of the seat bar installed in the middle;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the internal structure;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the internal structure of the center left handle;

[0026] Figure 7 For the present invention Figure 5 Schematic diagram of the internal structure of the converter;

[0027] Figure 8 For the present invention Figure 3 Left side view of the middle seat bar installation;

[0028] Fig. 9 For the present invention Figure 8 Schematic diagram of the internal structure;

[0029] Fig.10 For the present invention Fig. 9 Cross-section at AA in the middle;

[0030] Fig.11 For the present invention Figure 5 Schematic diagram of the internal structure of the release mechanism;

[0031] Fig.12 For the present invention Figure 5 Schematic diagram of the partial internal structure of the intermediate conversion tube.

[0032] Description of the numbers in the figure:

[0033] 1. Detection integration; 11. Explosion-proof box; 12. Sampler; 13. Wireless controller; 14. Detector; 141. Detection meter; 142. Mounting support tube; 143. Long elbow; 144. Short elbow; 15. Explosion-proof door; 16. Perspective window; 2. Mounting base; 21. Mounting seat strip; 22. Left holding strip; 23. Right holding strip; 24. Straightening piece; 25. Clamping piece; 26. Clamping cavity; 27. Clamping spring; 28. Clamping piston; 29. ​​Clamping head; 210. Pull rod; 211. Pull ring; 212. Chamfered bevel; 3. Gas delivery structure; 31. Deflation chamber; 32. Deflation pipe; 33. Deflation jack; 34. Intake chamber; 35. Intake pipe; 36. Intake channel; 37. Transfer chamber; 38. L-shaped intake jack; 39. Standard airway; 310. Internally threaded pipe; 31 1. Standard gas cylinder; 312. Conversion chamber; 313. Air channel; 4. Converter; 41. Conversion shell; 42. Conversion motor; 43. Conversion wheel; 44. Conversion line; 45. Upper guide wheel; 46. Lower guide wheel; 47. Linkage column head; 5. Conversion structure; 51. Conversion tube; 52. Conversion piston; 53. Concave groove; 54. Conversion spring; 55. Conversion plug; 56. Distance rod; 57. Positioning groove; 58. Vent; 59. Elastic rope; 6. Isolation mechanism; 61. Isolation block; 62. Isolation chamber; 63. Limiting ring; 64. Adapter hole; 65. Guide hole; 66. Gas transmission groove; 67. Compression spring; 68. Correction piston; 69. Isolation column; 7. Release mechanism; 71. Release cylinder; 72. Release spring; 73. Release piston; 74. Release bevel head. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0035] A high concentration VOCs explosion-proof detection device, including a detection integrated 1, see Figure 1-2 The detection integration 1 includes an explosion-proof box 11, a sampler 12 is fixedly installed on the bottom surface of the inner cavity of the explosion-proof box 11, and the sampler 12 is connected to the exhaust gas source. A wireless controller 13 is fixedly installed on the inner wall of the explosion-proof box 11, and a mounting base 2 is installed on the inner wall of the explosion-proof box 11. Please refer to Figure 3-4The mounting base 2 includes a mounting seat bar 21, which is fixedly connected to the inner wall of the explosion-proof box 11 and is located above the wireless controller 13. Two left holding bars 22 and two right holding bars 23 are fixedly connected to the front of the mounting seat bar 21. A detector 14 is arranged between the left holding bars 22 and the right holding bars 23. An explosion-proof door 15 is arranged on the front of the explosion-proof box 11, and a perspective window 16 is arranged on the explosion-proof door 15. Please refer to Figure 8-10 The mounting seat strip 21 is provided with a gas delivery structure 3 inside, and the gas delivery structure 3 includes a deflation cavity 31 and a transfer cavity 37. The deflation cavity 31 and the transfer cavity 37 are both provided inside the mounting seat strip 21. The detector 14 is connected with the deflation cavity 31 and the transfer cavity 37. A conversion cavity 312 is provided in the middle of the transfer cavity 37. Please refer to Figure 5 and Figure 7 A converter 4 is mounted on the mounting seat strip 21. The converter 4 includes a conversion motor 42. The conversion motor 42 is fixedly mounted on the mounting seat strip 21. A conversion structure 5 is provided inside the transfer cavity 37. The conversion structure 5 includes a conversion tube 51. The conversion tube 51 is movably inserted into the interior of the transfer cavity 37. The conversion tube 51 is connected to the conversion motor 42 through a transmission. Please refer to Figure 5 and Fig.12 The conversion tube 51 is provided with two isolation mechanisms 6 inside. The isolation mechanism 6 includes an isolation block 61. The isolation block 61 is fixedly plugged on the conversion tube 51. The end surface of the isolation block 61 is flush with the surface of the conversion tube 51. Please refer to Figure 7 and Fig.11 A release mechanism 7 is installed on the top surface of the inner cavity of the conversion chamber 312 . The release mechanism 7 includes a release gas cylinder 71 . The release gas cylinder 71 is fixedly connected to the top surface of the inner cavity of the conversion chamber 312 .

[0036] See also Figure 3 The detector 14 includes a detection head 141, the bottom of the detection head 141 is connected to a mounting support tube 142, the mounting support tube 142 is movably inserted between the left holding bar 22 and the right holding bar 23, and the bottom surface of the mounting support tube 142 is connected to a long curved pipe 143 and a short curved pipe 144, the long curved pipe 143 is connected to the transfer chamber 37, and the short curved pipe 144 is connected to the venting chamber 31, which is used for real-time detection of the content of VOCs in the exhaust gas. There are two detectors 14, the detector 14 located at the left end of the explosion-proof box 11 is the first, and the other detector 14 is the second. The arrangement of the remaining structures corresponds to the arrangement of the detectors 14, and a one-way driving air pump is arranged inside the detection head 141.

[0037] See also Figure 5-6The mounting base 2 also includes a straightening member 24 and a clamping member 25. The clamping member 25 and the straightening member 24 are respectively fixedly connected to the left and right side surfaces of the mounting support tube 142 for calibrating the position of the detector 14. The mounting base 2 also includes a clamping cavity 26. The clamping cavity 26 is arranged inside the left holding bar 22. The left side of the inner cavity of the clamping cavity 26 is connected to a clamping piston 28 through a clamping spring 27. The clamping piston 28 is slidably inserted into the interior of the clamping cavity 26. The other side of the clamping piston 28 is fixed. It is connected to a locking head 29, the other end of which extends to the outside of the left holding bar 22 and is locked with the locking piece 25. A pulling rod 210 is fixedly connected to the left side surface of the locking piston 28. The end of the pulling rod 210 extends to the outside of the left holding bar 22 and is fixedly connected to a pulling ring 211, which is used to clamp the detector 14 to facilitate the installation and disassembly of the detector 14. The ends of the left holding bar 22 and the right holding bar 23 are provided with chamfered surfaces 212 for calibrating the position of the detector 14.

[0038] See also Figure 8-10The gas delivery structure 3 also includes a deflation pipe 32, which is movably plugged into the inside of the deflation cavity 31. One end of the deflation pipe 32 extends from the inside of the mounting seat strip 21. Two deflation holes 33 are provided on the right side of the inner cavity of the deflation cavity 31. The short bend pipe 144 is movably plugged into the inside of the deflation hole 33 to discharge the detected waste gas. A plug valve is provided inside the deflation hole 33, so that the deflation hole 33 is connected when the short bend pipe 144 is inserted, and the deflation hole 33 is isolated when the short bend pipe 144 is pulled out, so as to avoid Exhaust gas overflows, an L-shaped air inlet socket 38 is provided on the bottom surface of the inner cavity of the transfer chamber 37, a plug valve is provided inside the L-shaped air inlet socket 38, and the long elbow 143 is movably plugged into the inside of the L-shaped air inlet socket 38. The gas delivery structure 3 also includes an air inlet cavity 34, which is provided inside the mounting seat strip 21 and is located directly above the exhaust cavity 31. An air inlet pipe 35 is movably plugged into the inside of the air inlet cavity 34, and one end of the air inlet pipe 35 extends from the inside of the mounting seat strip 21 and is connected to the sampler 12. An air inlet passage 36 is provided on the bottom surface of the cavity, and the air inlet passage 36 is connected to the transfer cavity 37 for absorbing exhaust gas. An air passage 313 is provided on the top surface of the inner cavity of the transfer cavity 37 and is aligned with the L-shaped air inlet jack 38. The top of the air passage 313 is open and the opening is provided on the top surface of the mounting seat strip 21 for connecting the detector 14 with outdoor air. A standard air passage 39 is provided on the top surface of the inner cavity of the conversion cavity 312, and the other end of the standard air passage 39 is open and the opening is provided on the side of the mounting seat strip 21 for outputting exhaust gas. The gas structure 3 also includes an internal threaded tube 310, which is fixedly connected to the side of the mounting seat strip 21 and is connected to the standard gas channel 39. The internal threads of the internal threaded tube 310 are installed with a standard gas cylinder 311, so that the detector 14 can be connected to the standard sample gas. A push-on gas valve is provided at the opening of the standard gas cylinder 311. When the standard gas cylinder 311 is installed together with the internal threaded tube 310, the push-on gas valve is opened. When the standard gas cylinder 311 is separated from the internal threaded tube 310, the push-on gas valve is closed to prevent leakage of the standard sample gas.

[0039] See also Figure 5 and Figure 7The converter 4 also includes a conversion shell 41, which is fixedly connected to the surface of the mounting seat strip 21. The conversion motor 42 is located inside the conversion shell 41. A conversion wheel 43 is provided inside the conversion motor 42. The conversion wheel 43 is fixedly sleeved on the output shaft of the conversion motor 42. Two conversion wires 44 are wound around the outside of the conversion wheel 43. The two conversion wires 44 are wound around the outside of the conversion wheel 43 in opposite directions. Upper wire wheels 45 are installed on both left and right side surfaces of the inner cavity of the conversion shell 41. The converter 4 also includes a lower wire wheel 46, which is fixedly installed on the top surface of the inner cavity of the transfer cavity 37. The end of the conversion wire 44 bypasses the upper wire wheel 45 and extends to the inside of the transfer cavity 37 and is fixedly connected to a linkage column head 47 after bypassing the lower wire wheel 46. The linkage column head 47 is fixedly connected to the surface of the conversion tube 51, which is used to apply a driving force to the conversion structure 5 so that the conversion structure 5 can move inside the transfer cavity 37.

[0040] See also Fig.10 The conversion structure 5 also includes two conversion pistons 52, which are fixedly connected to both ends of the conversion tube 51 respectively. The conversion pistons 52 are slidably inserted in the transfer chamber 37. A concave groove 53 is provided on the bottom surface of the conversion piston 52. The end surface of the conversion piston 52 away from the conversion tube 51 is connected to a conversion plug 55 through a conversion spring 54. The conversion plug 55 is slidably inserted in the transfer chamber 37. A distance rod 56 is fixedly connected to the end surface of the conversion plug 55 close to the conversion tube 51. A positioning groove 57 is provided on the bottom surface of the conversion plug 55. The positioning groove 57 is adapted to the L-shaped air inlet jack 38. A vent hole 58 is provided on the end surface of the conversion plug 55 away from the conversion tube 51. The vent hole 58 is connected to the transfer chamber 37. An elastic rope 59 is fixedly connected to the end surface of the conversion plug 55 away from the conversion tube 51. The other end of the elastic rope 59 is fixedly connected to the inner wall of the transfer chamber 37 and is used to convert the gas source sampled by the detector 14. The elastic rope 59 is woven from an elastic harness and a non-elastic harness to play a positioning role. The cross-section of the conversion tube 51 is elliptical but not limited to an elliptical shape, so that the conversion tube 51 cannot rotate on its own.

[0041] See also Fig.12The isolation mechanism 6 also includes an isolation chamber 62, which is opened inside the isolation block 61, and a limit ring 63 is fixedly connected to the inner wall of the isolation chamber 62. A transfer hole 64 located above the limit ring 63 is opened on the inner wall of the isolation chamber 62, and a guide hole 65 is opened on the top surface of the inner cavity of the isolation chamber 62. A gas transmission groove 66 is opened on the inner wall of the guide hole 65. The bottom surface of the inner cavity of the isolation chamber 62 is connected to a correction piston 68 through a compression spring 67. The correction piston 68 is slidably inserted in the interior of the isolation chamber 62, and an isolation column 69 is fixedly connected to the top surface of the correction piston 68. The top end of the isolation column 69 is slidably inserted in the interior of the limit ring 63 and the guide hole 65, which is used to block the conversion tube 51 to prevent the standard sample gas from leaking through the conversion structure 5.

[0042] See also Fig.11 The release mechanism 7 also includes a release spring 72, which is fixedly connected to the top surface of the inner cavity of the release gas cylinder 71. The bottom end of the release spring 72 is fixedly connected to a release piston 73, which is slidably inserted into the interior of the release gas cylinder 71. A release bevel head 74 is fixedly connected to the bottom surface of the release piston 73. The bottom end of the release bevel head 74 extends to the outside of the release gas cylinder 71 and is movably inserted into the interior of the guide hole 65 and rests on the top surface of the isolation column 69, so as to open the isolation mechanism 6 so that the standard sample gas can enter the detector 14.

[0043] Working principle:

[0044] First, the first detector 14 works, and then the exhaust gas enters the sampler 12 driven by the first detector 14, and then the sampler 12 pre-treats the exhaust gas, and then the exhaust gas enters the intake cavity 34 through the intake pipe 35, and then the exhaust gas enters the transfer cavity 37 through the intake channel 36, and then the exhaust gas enters the detection header 141 through the first-order vent hole 58, the positioning groove 57, the L-shaped intake jack 38, the long bend pipe 143, and the mounting support tube 142, and is discharged from the short bend pipe 144 into the exhaust jack 33, the exhaust cavity 31 and discharged from the exhaust pipe 32, and then the exhaust gas flows inside the detection header 141, and then the detection header 141 monitors the VOCs content in the exhaust gas and sends the result to the wireless controller 13, by The wireless controller 13 sends the detection result to the receiving terminal in real time. When the operation time of the first detector 14 reaches the preset value inside the wireless controller 13, the wireless controller 13 controls the conversion motor 42 to operate, and then the conversion motor 42 drives the conversion wheel 43 to rotate. Then, a conversion line 44 is released from the outside of the conversion wheel 43, and another conversion line 44 is wound around the outside of the conversion wheel 43. This conversion line 44 pulls the conversion tube 51 to move leftward through the linkage column head 47, and then the conversion tube 51 drives the conversion piston 52 to move leftward. Then, the conversion tube 51 drives the conversion piston 52, the conversion spring 54, and the conversion plug 55 at its right end to move leftward synchronously and pull the corresponding elastic rope 59 to make it elastically elongated. At the same time, the conversion tube 5 1 moves the conversion piston 52 at its left end to the left, and then the conversion spring 54 at the left end of the conversion piston 52 gradually shortens elastically, and the elastic potential energy decreases. In this process, the conversion spring 54 continuously applies a rightward pulling force to the conversion plug 55, so that the conversion plug 55 is fixed. Then, the conversion piston 52 at the left end of the conversion tube 51 contacts the corresponding distance rod 56. At this time, the positioning groove 57 at the right end of the conversion tube 51 is connected with the corresponding L-shaped intake jack 38. There is exhaust gas flow inside the two detectors 14, and both play a monitoring role. At the same time, the elastic rope 59 at the right end of the conversion tube 51 is stretched to the longest state, and then the conversion tube 51 applies a leftward thrust to the corresponding conversion plug 55 through the conversion piston 52 and the distance rod 56 at its left end. Then, The conversion plug 55 moves to the left and blocks the L-shaped air inlet hole 38, and then the conversion plug 55 continues to move to the left and opens the opening at the top of the L-shaped air inlet hole 38. Then the gap between the conversion piston 52 at the left end of the conversion tube 51 and the conversion plug 55 is connected to the L-shaped air inlet hole 38 and the air channel 313. At this time, the wireless controller 13 determines that the L-shaped air inlet hole 38 and the air channel 313 are connected through the gap between the conversion piston 52 and the conversion plug 55 according to the number of rotations of the output shaft of the conversion motor 42, and controls the conversion motor 42 to stop rotating. In this process, the conversion tube 51 moves to the left with the conversion piston 52 at its right end and pulls the corresponding conversion spring 54, so that the conversion spring 54 elastically stretches and the elastic potential energy increases.Then, driven by the first detector 14, the external air passes through the air channel 313, the gap between the conversion piston 52 and the conversion plug 55, the L-shaped air inlet jack 38, the long elbow 143, the mounting support tube 142, the first detection meter head 141, the short elbow 144, the deflation jack 33, the deflation cavity 31, and the deflation pipe 32. After that, the first detector 14 detects the air, and then the wireless controller 13 detects the displayed value of the first detector 14 at this time. When the displayed value of the first detector 14 is not zero, the wireless controller 13 controls the displayed value of the first detector 14 until the first detector 14 reaches zero. The display value of the detector 14 is zero, and the zero point calibration is completed. Then the wireless controller 13 controls the conversion motor 42 to continue to rotate, and then the conversion tube 51 continues to move to the left, and then the recessed groove 53 at the left end of the conversion tube 51 is connected with the L-shaped air inlet jack 38. The wireless controller 13 controls the conversion motor 42 to stop rotating. At the same time, the release bevel head 74 slides on the surface of the conversion tube 51, and then the release bevel head 74 slides to the surface of the isolation column 69, and then the release piston 73 applies pressure to the isolation column 69 through the release bevel head 74 under the action of the elastic force of the release spring 72. The isolation column 69 moves downward, and then the guide hole 65 is connected with the gas delivery groove 66. After that, the standard sample gas in the standard gas cylinder 311 flows out through the internal threaded tube 310, the standard gas channel 39, the conversion cavity 312, the guide hole 65, the gas delivery groove 66, the isolation cavity 62, the adapter hole 64, the conversion tube 51, the recessed groove 53, the L-shaped air inlet jack 38, the long bend pipe 143, the mounting support tube 142, the first detection meter head 141, the short bend pipe 144, the deflation jack 33, the deflation cavity 31, and the deflation pipe 32 under the action of the pressure difference, and then the wireless controller 13 controls the first detector 14 to The standard sample gas is tested and the concentration data is recorded. The concentration data is the range. After the concentration data is stable, the wireless controller 13 shuts down the first detector 14, and then the standard sample gas in the standard gas cylinder 311 stops entering the first detector 14. The calibration of the range is completed. Then, when the working time of the second detector 14 reaches the preset value in the wireless controller 13, the wireless controller 13 controls the output shaft of the conversion motor 42 to rotate in the opposite direction, so that the conversion tube 51 moves to the right. Then, the first detector 14 monitors the exhaust gas in real time and calibrates the second detector 14 according to the above principle.

[0045] The above is only a preferred specific implementation manner of the present invention; but the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A high-concentration VOCs explosion-proof detection device, comprising a detection assembly (1), characterized in that: The detection assembly (1) comprises an explosion-proof box (11), a sampler (12) is fixedly mounted on the bottom surface of the inner cavity of the explosion-proof box (11), a wireless controller (13) is fixedly mounted on the inner wall of the explosion-proof box (11), a mounting base (2) is mounted on the inner wall of the explosion-proof box (11), the mounting base (2) comprises a mounting seat strip (21), the mounting seat strip (21) is fixedly connected to the inner wall of the explosion-proof box (11) and is located above the wireless controller (13), and a mounting base (21) is fixedly mounted on the front surface of the mounting seat strip (21). Two left holding strips (22) and two right holding strips (23) are fixedly connected, a detector (14) is provided between the left holding strip (22) and the right holding strip (23), an explosion-proof door (15) is provided on the front of the explosion-proof box (11), a perspective window (16) is provided on the explosion-proof door (15), a gas transmission structure (3) is provided inside the mounting seat strip (21), the gas transmission structure (3) includes a deflation chamber (31) and a transfer chamber (37), and the deflation chamber (31) and the transfer chamber (37) are both opened on the mounting seat strip (21). Inside, the detector (14) is connected to the deflation chamber (31) and the transfer chamber (37); a conversion chamber (312) is provided in the middle of the transfer chamber (37); a converter (4) is installed on the mounting seat bar (21); the converter (4) includes a conversion motor (42); the conversion motor (42) is fixedly installed on the mounting seat bar (21); a conversion structure (5) is provided inside the transfer chamber (37); the conversion structure (5) includes a conversion tube (51); the conversion tube (51) is movably inserted into the transfer chamber (37), the conversion tube (51) and the conversion motor (42) are transmission-connected, two isolation mechanisms (6) are provided inside the conversion tube (51), the isolation mechanism (6) comprises an isolation block (61), the isolation block (61) is fixedly plugged on the conversion tube (51), and a release mechanism (7) is installed on the top surface of the inner cavity of the conversion chamber (312), the release mechanism (7) comprises a release gas cylinder (71), and the release gas cylinder (71) is fixedly connected to the top surface of the inner cavity of the conversion chamber (312); The detector (14) comprises a detection meter head (141), the bottom of the detection meter head (141) is connected to a mounting support tube (142), the mounting support tube (142) is movably inserted between the left holding bar (22) and the right holding bar (23), and the bottom surface of the mounting support tube (142) is connected to a long curved tube (143) and a short curved tube (144), the long curved tube (143) is connected to the transfer chamber (37), and the short curved tube (144) is connected to the deflation chamber (31); The converter (4) further comprises a conversion shell (41), the conversion shell (41) being fixedly connected to the surface of the mounting seat bar (21), the conversion motor (42) being located inside the conversion shell (41), the conversion wheel (43) being provided inside the conversion motor (42), the conversion wheel (43) being fixedly sleeved on the output shaft of the conversion motor (42), two conversion wires (44) being wound around the outside of the conversion wheel (43), the two conversion wires (44) being wound around the outside of the conversion wheel (43) in opposite directions, upper wire wheels (45) being installed on both left and right side surfaces of the inner cavity of the conversion shell (41), the converter (4) further comprises a lower wire wheel (46), the lower wire wheel (46) being fixedly installed on the top surface of the inner cavity of the transfer cavity (37), the end of the conversion wire (44) passing around the upper wire wheel (45) and extending to the inside of the transfer cavity (37) and passing around the lower wire wheel (46) and then being fixedly connected to a linkage column head (47), the linkage column head (47) being fixedly connected to the surface of the conversion tube (51).

2. A high-concentration VOCs explosion-proof detection device according to claim 1, characterized in that: The mounting base (2) further comprises a straightening member (24) and a locking member (25), wherein the locking member (25) and the straightening member (24) are respectively fixedly connected to the left and right side surfaces of the mounting support tube (142). The mounting base (2) further comprises a locking cavity (26), wherein the locking cavity (26) is arranged inside the left holding strip (22), and a locking piston (28) is connected to the left side surface of the inner cavity of the locking cavity (26) via a locking spring (27), and the locking piston (28) is slidably inserted into the locking cavity (26). Internally, a locking head (29) is fixedly connected to the other side of the locking piston (28), and the other end of the locking head (29) extends to the outside of the left holding bar (22) and is locked with the locking member (25). A pulling rod (210) is fixedly connected to the left side of the locking piston (28), and the end of the pulling rod (210) extends to the outside of the left holding bar (22) and is fixedly connected to a pulling ring (211). The ends of the left holding bar (22) and the right holding bar (23) are both provided with chamfered inclined surfaces (212).

3. A high-concentration VOCs explosion-proof detection device according to claim 1, characterized in that: The gas delivery structure (3) further comprises an air release pipe (32), the air release pipe (32) being movably plugged into the interior of the air release cavity (31), one end of the air release pipe (32) extending from the interior of the mounting seat strip (21), two air release holes (33) being provided on the right side surface of the inner cavity of the air release cavity (31), a short curved pipe (144) being movably plugged into the interior of the air release holes (33), an L-shaped air intake hole (38) being provided on the bottom surface of the inner cavity of the transfer cavity (37), the long curved pipe (143) being movably plugged into the interior of the L-shaped air intake hole (38), and the gas delivery structure (3) further comprises an air intake cavity (34), the air intake cavity (34) being provided in the interior of the mounting seat strip (21) and being located directly above the air release cavity (31), an air intake pipe (35) being movably plugged into the interior of the air intake cavity (34), one end of the air intake pipe (35) extending from the interior of the mounting seat strip (21) and extending from the interior of the mounting seat strip (21). The transfer chamber (37) extends out of the transfer chamber (37) and communicates with the sampler (12); an air inlet passage (36) is provided on the bottom surface of the inner cavity of the air inlet chamber (34); the air inlet passage (36) is communicated with the transfer chamber (37); an air passage (313) aligned with the L-shaped air inlet jack (38) is provided on the top surface of the inner cavity of the transfer chamber (37); the top end of the air passage (313) is open and the opening is arranged on the top surface of the mounting seat strip (21); a standard air passage (39) is provided on the top surface of the inner cavity of the conversion chamber (312); the other end of the standard air passage (39) is open and the opening is arranged on the side surface of the mounting seat strip (21); the gas delivery structure (3) further comprises an internal threaded tube (310); the internal threaded tube (310) is fixedly connected to the side surface of the mounting seat strip (21) and communicates with the standard air passage (39); a standard gas cylinder (311) is installed on the internal thread of the internal threaded tube (310).

4. A high-concentration VOCs explosion-proof detection device according to claim 3, characterized in that: The conversion structure (5) further comprises two conversion pistons (52), the two conversion pistons (52) being fixedly connected to the two ends of the conversion tube (51) respectively, the conversion pistons (52) being slidably inserted in the interior of the transfer chamber (37), a recessed groove (53) being provided on the bottom surface of the conversion piston (52), an end surface of the conversion piston (52) away from the conversion tube (51) being connected to a conversion plug (55) via a conversion spring (54), the conversion plug (55) being slidably inserted in the interior of the transfer chamber (37), and a conversion plug (55) being close to the conversion tube (51) A distance rod (56) is fixedly connected to the end surface of the tube (51); a positioning groove (57) is provided on the bottom surface of the conversion plug (55); the positioning groove (57) is matched with the L-shaped air inlet plug hole (38); a vent hole (58) is provided on the end surface of the conversion plug (55) away from the conversion tube (51); the vent hole (58) is communicated with the transfer chamber (37); an elastic rope (59) is fixedly connected to the end surface of the conversion plug (55) away from the conversion tube (51); the other end of the elastic rope (59) is fixedly connected to the inner wall of the transfer chamber (37).

5. A high-concentration VOCs explosion-proof detection device according to claim 1, characterized in that: The isolation mechanism (6) further comprises an isolation chamber (62), the isolation chamber (62) being arranged inside the isolation block (61), a limit ring (63) being fixedly connected to the inner wall of the isolation chamber (62), a transfer hole (64) being arranged on the inner wall of the isolation chamber (62) and being located above the limit ring (63), a guide hole (65) being arranged on the top surface of the inner cavity of the isolation chamber (62), a gas transmission deflection groove (66) being arranged on the inner wall of the guide hole (65), a correction piston (68) being transmission-connected to the bottom surface of the inner cavity of the isolation chamber (62) via a compression spring (67), the correction piston (68) being slidably inserted into the interior of the isolation chamber (62), an isolation column (69) being fixedly connected to the top surface of the correction piston (68), the top end of the isolation column (69) being slidably inserted into the interior of the limit ring (63) and the guide hole (65).

6. A high-concentration VOCs explosion-proof detection device according to claim 5, characterized in that: The release mechanism (7) further comprises a release spring (72), the release spring (72) being fixedly connected to the top surface of the inner cavity of the release cylinder (71), the bottom end of the release spring (72) being fixedly connected to a release piston (73), the release piston (73) being slidably inserted into the interior of the release cylinder (71), the bottom surface of the release piston (73) being fixedly connected to a release bevel head (74), the bottom end of the release bevel head (74) extending to the outside of the release cylinder (71) and being movably inserted into the interior of the guide hole (65) and resting against the top surface of the isolation column (69).

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