Air pollution monitoring device and monitoring method for chemical production areas

Abstract

The present invention discloses an air pollution monitoring device and a monitoring method for a chemical production area, which relates to the technical field of air pollution monitoring, and includes a chassis, a rotating part, which is placed on one side of the chassis and can rotate relative to the chassis. A pushing mechanism is placed in the rotating part. An air intake mechanism is used to guide air to enter for easy monitoring. A separation mechanism is placed in the air intake mechanism and is used to separate solids and gases in the air. The present invention also discloses an air pollution monitoring method for a chemical production area, which includes the following steps: sampling and separation, gas monitoring, and solid detection. During air monitoring, the present invention can sample and detect air at different heights according to the monitoring environment and needs, thereby reducing the impact of airflow on the monitoring results, and can separate air samples and detect them separately to improve the accuracy of the results. At the same time, it can cope with the impact of severe weather on the monitoring results and improve the detection effect.

Description

Technical Field

[0001] The invention relates to the technical field of air pollution monitoring, and in particular to an air pollution monitoring device and a monitoring method for a chemical production area. Background Art

[0002] Air monitoring refers to the fixed-point, continuous or timed sampling and detection of pollutants in the air, analysis and acquisition of relevant data and recording. Air monitoring items mainly include sulfur dioxide, nitrogen monoxide, hydrocarbons, floating dust, etc. Different air detection equipment is used according to the application environment.

[0003] With the rapid development of industrialization, chemical plants have brought about serious environmental problems while providing convenience for human production and life. The impact of waste gas emitted by chemical plants on the atmospheric environment is particularly prominent. The waste gas emitted by chemical plants contains a large amount of pollutants such as sulfur oxides, nitrogen oxides, and volatile organic compounds. These substances will form acid rain, haze and other severe weather through chemical reactions in the atmosphere, seriously deteriorating the air quality. In addition, harmful substances will enter surface water bodies through rainwater erosion, thereby polluting water resources such as rivers and lakes, causing serious harm to aquatic organisms and human health.

[0004] For example, an air pollution monitoring device that is easy to maintain and has publication number CN112240860A relates to the field of air detection technology and includes a base, a top outer wall of the base is fixedly connected with a lifting cylinder, and a bottom inner wall of the lifting cylinder is fixedly connected with a fixing rod, a lifting plate is slidably provided on the outer wall of the fixing rod, a top outer wall of the lifting plate is fixedly connected with a column, and a placement plate is provided on the top of the column, a PM2.5 detector is placed on the top outer wall of the placement plate, and a limiting mechanism is also provided on the placement plate, a sleeve is provided on the bottom inner wall of the lifting cylinder, and a rotating shaft is rotatably provided on the inner wall of the sleeve, fixing openings are provided on the outer walls on both sides of the lifting cylinder, and take-up rollers are provided on the outer walls of the rotating shaft near both sides, which effectively improves the convenience of device maintenance and the stability of the base, and has a better use effect, and also enables the device to remain stable when encountering higher wind speeds, and has a better use effect.

[0005] In actual applications of the above technical solution, the monitoring device is generally installed at a certain distance from the ground to facilitate the monitoring of exhaust gas from the top of larger equipment, and the monitoring position is adjusted according to environmental needs. At the same time, wind direction can easily cause deviations in monitoring results. Since most equipment is installed outdoors, the weather will also have a certain impact on the stable operation of the equipment.

[0006] Therefore, it is necessary to invent an air pollution monitoring device and a monitoring method for chemical production areas to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a chemical production area air pollution monitoring device and a monitoring method to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air pollution monitoring device for a chemical production area, comprising a chassis, a gas monitor and a dust detector, wherein the gas monitor and the dust detector are both fixedly connected to the inside of the chassis, and further comprising a rotating part, which is placed on one side of the chassis and can rotate relative to the chassis, and the rotating part is a hollow rod-shaped structure; a pushing mechanism, which is placed in the rotating part, the bottom of the pushing mechanism is fixedly connected to the inner side of the rotating part, and the top of the pushing mechanism can slide up and down along the rotating part; an air intake mechanism, which is fixedly connected to the top of the pushing mechanism, the lower end of the air intake mechanism is placed in the rotating part, and is used to guide air to enter for easy monitoring, the air intake mechanism comprises a fixed pipe, a rotating pipe and a guide mechanism, the guide mechanism is fixedly connected to the rotating pipe, the lower end of the rotating pipe is rotatably connected to the fixed pipe, the pushing mechanism enables the air intake mechanism to slide up and down along the rotating part, and the lower end of the fixed pipe is connected to the corresponding gas monitor and dust detector; a separation mechanism, which is placed in the air intake mechanism, and is used to separate solids and gases in the air.

[0009] Preferably, the air intake mechanism further comprises a top cover, a mesh cover, a first air pipe and a second air pipe, the first air pipe passes through the rotating pipe, the second air pipe is opened in the fixed pipe, the first air pipe corresponds to and is connected with the second air pipe, the mesh cover is placed on the outside of the rotating pipe, the inside of the mesh cover is connected with the first air pipe, the top cover is fixedly connected to the top of the rotating pipe, and the top cover is placed above the mesh cover;

[0010] An air pipe is provided in the rotating tube, the upper end of which is connected to the guide mechanism, and an air inlet pipe is provided on the inner side of the fixed tube, which corresponds to and is connected to the air pipe;

[0011] The lower end of the air inlet pipe is connected to a first hose, the lower end of the second air pipe is connected to a second hose, and both the first hose and the second hose are connected to a gas monitor.

[0012] Preferably, an extension tube and a driving tube are provided in the rotating part, the pushing mechanism is placed in the driving tube, the fixed tube is placed in the extension tube and can slide relative to the extension tube, and a reset boss is fixedly connected to the inner side of the extension tube for guiding the air intake mechanism to reset;

[0013] A reset guide groove is provided on the outer side of the rotating tube, and a linear guide groove is provided on the outer side of the fixed tube, and the linear guide groove corresponds to the reset boss.

[0014] Preferably, the guide mechanism comprises a guide tube rotatably connected to the top cover, a first sleeve and a second sleeve are rotatably sleeved on the outer side of the guide tube, an arc-shaped slide groove is provided in the middle of the second sleeve, and the first sleeve can slide along the arc-shaped slide groove, a blade is fixedly connected to one side of the guide tube, the first sleeve and the second sleeve, a stepper motor is fixedly connected to the upper end of the guide tube, and an output end of the stepper motor is fixedly connected to the first sleeve;

[0015] An air hole is opened in the middle of the guide tube, and a bellows is fixedly connected between the guide tube and the rotating tube. The bellows connects the air hole with the air pipe. A closing plate that can rotate relative to the axis of the guide tube is provided on the outside of the guide tube. The closing plate passes through the blades corresponding to the first ring and the second ring, and the closing plate can block air from entering the air hole.

[0016] Preferably, a flip push rod is slidably connected in the reset guide groove, the flip push rod passes through the top cover, an extrusion chute is opened at the upper end of the flip push rod, a flip rod is fixedly connected to one side of the guide tube, and the end of the flip rod is placed in the extrusion chute;

[0017] The flip rod rotates coaxially with the guide tube, and a return spring is fixedly connected to the middle part of the flip push rod.

[0018] Preferably, the separation mechanism comprises a first positioning frame fixedly connected to the rotating tube, a second positioning frame is provided below the first positioning frame, a filter screen is provided between the first positioning frame and the second positioning frame, the second positioning frame is fixedly connected to the fixed tube, the first positioning frame is placed in the air pipe, the second positioning frame is placed in the air intake pipe, the lower end of the second positioning frame is connected to a third hose, the third hose passes through the side wall of the second hose, and the third hose is connected to the dust detector;

[0019] A closing platform is provided on the inner side of the first positioning frame, a positioning rod is fixedly connected to the upper end of the closing platform, the positioning rod is slidably connected to the rotating tube, a pull rod is slidably connected to the upper end of the positioning rod, and the upper end of the pull rod is fixedly connected to the flip push rod.

[0020] Preferably, the pushing mechanism includes a cylinder and a guide frame, the lower end of the cylinder is fixedly connected to the rotating part, the guide frame is fixedly connected to the output end of the cylinder, the guide frame is placed in the extension tube and the driving tube, and the bottom of the fixed tube is fixedly connected to the guide frame.

[0021] Preferably, the upper end of the guide frame is fixedly connected to a push platform, the push platform is coaxial with the driving tube, the upper end of the driving tube is connected to a pressure tube, the side wall of the fixed tube is provided with an air cavity, an extrusion rod is slidably arranged in the air cavity, and the bottom of the air cavity is connected to the pressure tube.

[0022] Preferably, a servo motor is fixedly connected inside the chassis, a driving gear is fixedly connected to the outer side of the output shaft of the servo motor, the rotating part passes through the side wall of the chassis, and its end is gear-shaped, and the driving gear is meshed with the rotating part.

[0023] The present invention also discloses a method for monitoring air pollution in a chemical production area, comprising the following steps:

[0024] Step 1: Sampling and separation: air enters the air intake mechanism and separates solid particles from gas through the separation mechanism;

[0025] Step 2: gas monitoring: the gas in the air intake pipe and the second air pipe enters the corresponding gas monitors respectively, and the incoming air is tested;

[0026] Step 3: Solid detection: push the air intake mechanism upward through the pushing mechanism to make the rotating tube slide out of the rotating part. The wind blows the guide mechanism to make the rotating tube rotate relative to the fixed tube. The solid particles enter the dust detector through the separation mechanism and the entering solid particles are detected.

[0027] Technical effects and advantages of the present invention:

[0028] 1. The present invention provides a rotating part, a pushing mechanism and an air intake mechanism, and the height of the fixed tube is adjusted by the pushing mechanism. When the reset boss is placed in the linear notch of the upper part of the reset guide groove, the rotating tube is placed at a first height, and the air intake mechanism can collect air samples at the first height position; when the reset boss is placed in the linear guide groove, the rotating tube is placed at a second height, and the wind direction can blow the guide mechanism to drive the rotating tube to rotate relative to the fixed tube, and the air intake mechanism can collect air samples at the second height position; when the reset boss is disengaged from the linear guide groove, the rotating tube is at a third height; the pushing mechanism can stop the rotating tube at any position between the first height and the third height, and collect air samples at the current height position, so as to achieve the purpose of monitoring the air at multiple height positions and improve the monitoring range of the equipment.

[0029] 2. The present invention sets a guide mechanism, and the wind direction can blow the guide mechanism to drive the rotating tube to rotate relative to the fixed tube. Due to the rotation of the rotating tube, most of the collected samples follow the air flow into the air intake mechanism, reducing the influence of wind direction on the monitoring results and improving the accuracy of the monitoring results.

[0030] 3. The present invention sets an air intake mechanism and a separation mechanism. The filter is used to separate solid particles and gases. The filter is movably connected between the first positioning frame and the second positioning frame. Filters of different densities can be replaced according to needs. When the rotating tube is repeatedly swung at a small angle under the influence of the guide mechanism, the first positioning frame moves relative to the filter. During this process, the holes of the filter are cleared to prevent the filter from being blocked, thereby achieving the effect of separating dust particles from the air, detecting gases and solids separately, and optimizing the detection effect.

[0031] 4. The present invention sets a reset boss, a flip push rod, an extrusion chute and a flip rod. The reset boss squeezes the flip push rod. At this time, the extrusion chute pushes the flip rod to rotate, and the guide tube is adjusted to be vertical to the rotating tube. At this time, the air inlet end of the air hole faces downward to prevent rainwater from entering. At the same time, the blades are in a vertical state to increase the height. The upper end of the blades is connected to the ground wire to play a role in lightning protection, thereby achieving the purpose of coping with severe weather and reducing the risk of equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 A schematic diagram of the state of the blade flipping in the present invention;

[0034] Figure 3 It is a schematic diagram of the state where the blades in the present invention are unfolded;

[0035] Figure 4 is a cross-sectional view of the air intake mechanism of the present invention;

[0036] Figure 5 is a cross-sectional view of the rotating part of the present invention;

[0037] Figure 6 It is a schematic diagram of the disassembled state of the fixed tube and the rotating tube in the present invention;

[0038] Figure 7 It is a structural schematic diagram of the separation mechanism in the present invention;

[0039] Figure 8 It is a structural schematic diagram of the guide mechanism in the present invention;

[0040] Fig. 9 It is a schematic diagram of the position of the pressurized pipe in the present invention;

[0041] Fig.10 It is a schematic diagram of the internal structure of the chassis in the present invention.

[0042] In the figure: 1, chassis; 2, gas monitor; 3, dust detector; 4, rotating part; 5, pushing mechanism; 6, air intake mechanism; 7, separation mechanism; 8, extension tube; 9, driving tube; 10, reset boss; 11, reset guide groove; 12, linear guide groove; 13, flip push rod; 14, squeeze slide; 15, flip rod; 16, reset spring; 17, push table; 18, pressurized tube; 19, air cavity; 20, squeeze rod; 21, servo motor; 22, driving gear; 50, cylinder; 51, guide frame; 60, fixed tube; 61, rotating tube; 62, guide machine Structure; 63, top cover; 64, mesh cover; 65, first air pipe; 66, second air pipe; 67, air pipe; 68, air inlet pipe; 69, first hose; 70, second hose; 620, guide pipe; 621, first ring; 622, second ring; 623, arc slide; 624, blade; 625, stepper motor; 626, air hole; 627, bellows; 628, closing plate; 701, first positioning frame; 702, second positioning frame; 703, filter screen; 704, third hose; 706, closing table; 707, positioning rod; 708, pull rod. DETAILED DESCRIPTION

[0043] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The present invention provides Figures 1 to 10The chemical production area air pollution monitoring device shown includes a chassis 1, a gas monitor 2 and a dust detector 3, both of which are fixedly connected to the inside of the chassis 1, and both of which are prior art; the dust detector 3 is used to detect the composition and content of the dust particles entering, and it also includes necessary components such as an air pump, a water baffle is fixedly connected to the top of the chassis 1, which is used to block rainwater and reduce the impact of rainwater on the equipment in the chassis 1, and a plurality of ventilation holes are opened on the outside of the chassis 1 for cooling and preventing the equipment from overheating and affecting the detection results, and also includes a rotating part 4, which is placed on one side of the chassis 1 and can rotate relative to the chassis 1, and the rotating part 4 is a hollow rod-shaped structure, and the rotating part 4 can rotate relative to the chassis 1, so as to achieve the detection of air at multiple positions and improve the accuracy of the monitoring data. A pushing mechanism 5 is placed in the rotating part 4, the bottom of the pushing mechanism 5 is fixedly connected to the inner side of the rotating part 4, and the top of the pushing mechanism 5 can slide up and down along the rotating part 4. The air intake mechanism 6 is fixedly connected to the top of the pushing mechanism 5. The lower end of the air intake mechanism 6 is placed in the rotating part 4 to guide the air to enter for easy monitoring. The lower end of the air intake mechanism 6 is slidably connected to the rotating part 4. The air intake mechanism 6 includes a fixed tube 60, a rotating tube 61 and a guide mechanism 62. The guide mechanism 62 is fixedly connected to the rotating tube 61. The lower end of the rotating tube 61 is rotatably connected to the fixed tube 60. The fixed tube 60 and the rotating tube 61 are coaxial and have the same outer diameter. The pushing mechanism 5 enables the air intake mechanism 6 to slide up and down along the rotating part 4. The lower end of the fixed tube 60 is connected to the corresponding gas monitor 2 and dust detector 3, so that the sampled air sample can enter the gas monitor 2 and be detected. The separation mechanism 7 is placed in the air intake mechanism 6 and is used to separate solids and gases in the air. It can separate solid particles from gases in the air to facilitate separate detection and improve the detection effect.

[0045] Specifically, the air intake mechanism 6 also includes a top cover 63, a mesh cover 64, a first air pipe 65 and a second air pipe 66. The mesh cover 64 is made of a metal wire mesh and has good toughness to avoid deformation during use, which affects the air intake. The first air pipe 65 runs through the rotating tube 61, and the second air pipe 66 is opened in the fixed tube 60. The first air pipe 65 corresponds to and communicates with the second air pipe 66. The first air pipe 65 is an annular rotating body opened inside the rotating tube 61. The internal residual part is fixedly connected to the rotating tube 61 through a hollow plate structure to prevent The internal structure of the first air pipe 65 is separated from the rotating tube 61. The first air pipe 65 and the second air pipe 66 can rotate relative to each other and remain sealed to prevent the air inside the pipe from communicating with the outside. The mesh cover 64 is placed on the outside of the rotating tube 61. The inner side of the mesh cover 64 is connected to the first air pipe 65. The air enters the first air pipe 65 after passing through the mesh cover 64. The top cover 63 is fixedly connected to the top of the rotating tube 61. The top cover 63 is placed above the mesh cover 64. Two arc-shaped guide plates are fixedly connected to the lower end of the top cover 63 for guiding air to the mesh cover 64 to facilitate air entry. An air pipe 67 is provided in the rotating tube 61. The outer wall of the air pipe 67 is fixedly connected to the inner wall of the first air pipe 65 through a hollow plate. The upper end of the air pipe 67 is connected to the guide mechanism 62. The guide mechanism 62 will rotate according to the wind direction so that the guide plate opening at the lower end of the top cover 63 corresponds to the wind direction, thereby improving the air guiding effect. An air intake pipe 68 is provided on the inner side of the fixed tube 60. The air intake pipe 68 corresponds to and is connected to the air pipe 67. The air intake pipe 68 and the air pipe 67 can rotate relative to each other and remain sealed to prevent the air in the first air pipe 65 and the second air pipe 66 from entering the air intake pipe 68 and the air pipe 67.

[0046] More specifically, the lower end of the air inlet pipe 68 is connected to a first hose 69, and the lower end of the second air pipe 66 is connected to a second hose 70. Both the first hose 69 and the second hose 70 are connected to the corresponding gas monitor 2. During use, the air in the first air pipe 65 passes through the second air pipe 66 and the second hose 70 and then enters the gas monitor 2; the air entering through the guide mechanism 62 passes through the air pipe 67, the air inlet pipe 68 and the first hose 69 in turn and then enters the gas monitor 2, and the gas monitor 2 performs pollution detection on the air samples entering the first hose 69 and the second hose 70.

[0047] Specifically, an extension tube 8 and a drive tube 9 are provided in the rotating part 4, the pushing mechanism 5 is placed in the drive tube 9, the fixed tube 60 is placed in the extension tube 8 and can slide relative to the extension tube 8, and a through groove is provided in the middle of the rotating part 4 for connecting the extension tube 8 and the drive tube 9.

[0048] More specifically, in order to ensure that the air intake mechanism 6 maintains its initial direction after being reset, a reset boss 10 is fixedly connected to the inner side of the extension tube 8 to guide the air intake mechanism 6 to be reset. A reset guide groove 11 is provided on the outer side of the rotating tube 61, and the reset guide groove 11 is divided into an upper and lower part. The reset guide groove 11 of the upper part is a linear groove, and the reset guide groove 11 of the lower part is an inclined surface and surrounds the rotating tube 61 for a circle, and its highest position is connected with the linear groove part. A linear guide groove 12 is provided on the outer side of the fixed tube 60, and the linear groove part of the reset guide groove 11 is the same as the linear guide groove 12, and the linear guide groove 12 corresponds to the reset boss 10. During use, the fixed tube 60 slides downward relative to the rotating part 4, and the reset boss 10 slides along the linear guide rail. When the reset boss 10 enters the reset guide groove 11, the lower part of the reset guide groove 11 is squeezed by the reset boss 10, so that the rotating tube 61 rotates relative to the fixed tube 60. During this process, the fixed tube 60 still slowly descends. When the reset boss 10 enters the upper part of the reset guide groove 11, the rotating tube 61 cannot rotate relative to the fixed tube 60. At this time, the direction of the rotating tube 61 is fixed, so the direction after rotation is the same each time the intake mechanism 6 is reset.

[0049] It should be pointed out that when the reset boss 10 is placed in the linear notch of the upper part of the reset guide groove 11, the rotating tube 61 is placed at the first height. At this time, the air intake mechanism 6 can collect air samples at the first height position, and because the rotating tube 61 cannot rotate at this time, the collected samples are mostly the parts where the air enters freely; when the reset boss 10 is placed in the linear guide groove 12, the rotating tube 61 is placed at the second height, and the wind direction can blow the guide mechanism 62 to drive the rotating tube 61 to rotate relative to the fixed tube 60. At this time, the air intake mechanism 6 can collect air samples at the second height position, and due to the rotation of the rotating tube 61, most of the collected samples follow the air flow into the air intake mechanism 6; when the reset boss 10 is disengaged from the linear guide groove 12, the rotating tube 61 is at the third height.

[0050] The pushing mechanism 5 can stop the rotating tube 61 at any position between the first height and the third height, and collect air samples at the current height position.

[0051] Specifically, the guide mechanism 62 includes a guide tube 620 rotatably connected to the top cover 63, whose rotation axis is perpendicular to the axis of the rotating tube 61, and the outer side of the guide tube 620 is rotatably sleeved with a first ring 621 and a second ring 622, and the middle of the second ring 622 is provided with an arc-shaped slide groove 623, and the first ring 621 is fixedly connected with a boss at a position corresponding to the arc-shaped slide groove 623, so that the first ring 621 can slide along the arc-shaped slide groove 623, and the guide tube 620, the first ring 621 and the second ring 622 are all fixedly connected with a blade 624 on one side, and the blade 624 is fixedly connected to the guide tube 620. 24 are of the same size, and the three blades 624 are fitted in sequence. During this process, the wind blows the blades 624 to rotate the rotating tube 61 relative to the fixed tube 60. When the direction of the blades 624 is kept the same as the wind direction, the rotating tube 61 stops rotating at a large angle and repeatedly swings at a small angle under the influence of the airflow. The upper end of the guide tube 620 is fixedly connected to a stepper motor 625, and the stepper motor 625 is electrically connected to a controller and a power supply. The output end of the stepper motor 625 is fixedly connected to the first ring 621, and the stepper motor 625 can drive the first ring 621 to rotate relative to the guide tube 620.

[0052] During use, the stepper motor 625 drives the first ring 621 to rotate relative to the guide tube 620, and the first ring 621 slides relative to the arc groove 623. When the raised part of the first ring 621 rotates to the extreme position of the arc groove 623, the first ring 621 pulls the second ring 622 to rotate through the arc groove 623. When the first ring 621 rotates to the extreme position, the stepper motor 625 stops rotating. At this time, the three blades 624 are evenly distributed relative to the guide tube 620, and the angles between two adjacent blades 624 are the same. At this time, the rotating tube 61 continues to rotate relative to the fixed tube 60.

[0053] More specifically, an air hole 626 is opened in the middle of the guide tube 620, and the air hole 626 is L-shaped. The two ends of the air hole 626 are an air inlet end and an air outlet end respectively, and the air hole 626 passes through the outer wall and the bottom of the guide tube 620. A bellows 627 is fixedly connected between the guide tube 620 and the rotating tube 61. The bellows 627 is connected to the air outlet end of the air hole 626. The bellows 627 connects the air hole 626 with the air pipe 67. A closing plate 628 that can rotate relative to the axis of the guide tube 620 is provided on the outer side of the guide tube 620. The closing plate 628 is placed at the height of the air inlet end of the air hole 626. The closing plate 628 passes through the blades 624 corresponding to the first ring 621 and the second ring 622. The closing plate 628 can block air from entering the air hole 626.

[0054] During use, the stepper motor 625 causes the first ring 621 and the second ring 622 to rotate, and at the same time the corresponding blades 624 drive the closing plate 628 to move. When the blades 624 move to the extreme position, the stepper motor 625 stops rotating. At this time, the closing plate 628 blocks the air inlet end of the air hole 626 to prevent air from entering. In rainy weather, it can effectively prevent rainwater and other liquids from entering the air pipe 67 and prevent damage to the device. When the stepper motor 625 drives the first ring 621 and the second ring 622 to reset, the closing plate 628 is reset at the same time. At this time, air can enter the air pipe 67 through the air hole 626.

[0055] Specifically, a flip push rod 13 is slidably connected in the reset guide groove 11, and the flip push rod 13 passes through the top cover 63. An extrusion chute 14 is provided at the upper end of the flip push rod 13. A flip rod 15 is fixedly connected to one side of the guide tube 620. In the initial state, there is an angle between the flip rod 15 and the guide tube 620 to avoid a dead point when the flip rod 15 drives the guide tube 620 to rotate. The end of the flip rod 15 is placed in the extrusion chute 14. The flip rod 15 rotates coaxially with the guide tube 620. A reset spring 16 is fixedly connected to the middle of the flip push rod 13. After the rotating tube 61 enters the rotating part 4, the reset boss 10 is placed in the linear notch of the upper part of the reset guide groove 11. The reset boss squeezes the flip push rod 13. At this time, the extrusion chute 14 pushes the flip rod 15 to rotate, and the guide tube 620 is adjusted to be perpendicular to the rotating tube 61. At this time, the height of the rotating tube 61 is the initial height.

[0056] Specifically, the separation mechanism 7 includes a first positioning frame 701 fixedly connected to the rotating tube 61, a second positioning frame 702 is provided below the first positioning frame 701, a filter screen 703 is provided between the first positioning frame 701 and the second positioning frame 702, the filter screen 703 is used to separate solid particles and gas, the filter screen 703 is movably connected between the first positioning frame 701 and the second positioning frame 702, and filters of different densities can be replaced according to needs, the second positioning frame 702 is fixedly connected to the fixed tube 60, the first positioning frame 701 is placed in the air pipe 67, and the second positioning frame 702 is placed in the intake pipe 68. During use, when the rotating tube 61 is repeatedly swung at a small angle under the influence of the guide mechanism 62, the first positioning frame 701 moves relative to the filter screen 703, and in this process, the holes of the filter screen 703 are cleared to prevent the filter screen 703 from being blocked. The lower end of the second positioning frame 702 is connected to the third hose 704, the third hose 704 passes through the side wall of the second hose 70, and the third hose 704 is connected to the dust detector 3.

[0057] More specifically, a closing platform 706 is provided on the inner side of the first positioning frame 701. The upper end of the closing platform 706 is conical, and its lower end is in contact with the outer side of the first positioning frame 701 to prevent dust particles in the filter screen 703 from entering the second positioning frame 702, and to prevent a large amount of air from entering through the third hose 704, which would cause the filter screen 703 to be unable to effectively screen solid particles. A positioning rod 707 is fixedly connected to the upper end of the closing platform 706. The positioning rod 707 is slidably connected to the rotating tube 61. At the same time, the positioning rod 707 can also rotate relative to the rotating tube 61. The upper end of the positioning rod 707 is slidably connected to a pull rod 708. The upper end of the pull rod 708 is fixedly connected to the flip push rod 13.

[0058] When the flip push rod 13 rises to the third height, the lower end of the pull rod 708 contacts the top of the positioning rod 707. At this time, the flip push rod 13 continues to slide upward, causing the positioning rod 707 and the closing platform 706 to slide upward at the same time. At this time, a gap is generated between the closing platform 706 and the first positioning frame 701, and dust particles enter the third hose 704 through the gap.

[0059] Specifically, the pushing mechanism 5 includes a cylinder 50 and a guide frame 51. The cylinder 50 can also be a component such as a linear motor that can achieve linear pushing. The cylinder 50 is connected to a controller for controlling the pushing height of the cylinder 50. The lower end of the cylinder 50 is fixedly connected to the rotating part 4, and the guide frame 51 is fixedly connected to the output end of the cylinder 50. The guide frame 51 is placed in the extension tube 8 and the driving tube 9. The bottom of the fixed tube 60 is fixedly connected to the guide frame 51. The guide frame 51 is used to push the fixed tube 60 up and down through the cylinder 50, thereby adjusting the height of the air intake mechanism 6.

[0060] More specifically, a servo motor 21 is fixedly connected inside the chassis 1, and the servo motor 21 is electrically connected to a controller and a power supply. The controller accurately controls the rotation angle and speed of the servo motor 21, and a driving gear 22 is fixedly connected to the outer side of the output shaft of the servo motor 21. The rotating part 4 passes through the side wall of the chassis 1, and its end is gear-shaped. The driving gear 22 is meshed with the rotating part 4. During use, the servo motor 21 is rotated by the controller, and then the angle of the rotating part 4 relative to the chassis 1 is adjusted to monitor the air pollution conditions at different positions and avoid only air monitoring at the same longitudinal position.

[0061] Specifically, the upper end of the guide frame 51 is fixedly connected with a push platform 17, which is sealed with the driving tube 9 and can slide relative to the driving tube 9 to achieve the effect of the cylinder 50. The push platform 17 is coaxial with the driving tube 9. The upper end of the driving tube 9 is connected with a pressurizing tube 18, and the pressurizing tube 18 is opened at the end of the rotating part 4. The side wall of the fixed tube 60 is opened with an air cavity 19, and an extrusion rod 20 is slidably arranged in the air cavity 19. The extrusion rod 20 is slidably sealed with the air cavity 19, and the bottom of the air cavity 19 is connected with the pressurizing tube 18.

[0062] It should be noted that there is a certain height difference between the position of the pressurized tube 18 and the air cavity 19. When the fixed tube 60 is placed at the first height and the second height, the air cavity 19 is not connected to the pressurized tube 18. When the fixed tube 60 reaches the third height, the air cavity 19 is connected to the pressurized tube 18. At the same time, the push platform 17 is placed in the closed part of the driving tube 9, that is, the top of the driving tube 9 is not connected to the extension tube 8; the blade 624 is made of metal and is connected to the ground wire to reduce the damage caused by lightning strikes; a pressure equalizing hole connected to the outside world is provided at the bottom of the extension tube 8. When the push platform 17 is placed below the third height, air enters the pressure equalizing hole to reset the pressure at the upper end of the driving tube 9.

[0063] In this embodiment, the chassis 1 is installed at a position where air monitoring is required, and the air enters the first air pipe 65 after passing through the mesh cover 64. The air in the first air pipe 65 enters the gas monitor 2 after passing through the second air pipe 66 and the second hose 70. When the reset boss 10 is placed in the linear notch of the upper part of the reset guide groove 11, the rotating tube 61 is placed at the first height. At this time, the air intake mechanism 6 can collect air samples at the first height position, and because the rotating tube 61 cannot rotate at this time, most of the collected samples are the parts where air can enter freely; the height of the fixed tube 60 is adjusted by the pushing mechanism 5. When the reset boss 10 is placed in the linear guide groove 12, the rotating tube 61 is placed at the second height, and the wind direction can blow The dynamic guide mechanism 62 drives the rotating tube 61 to rotate relative to the fixed tube 60. At this time, the air intake mechanism 6 can collect air samples at the second height position. Due to the rotation of the rotating tube 61, most of the collected samples follow the air flow into the air intake mechanism 6. The guide mechanism 62 will rotate according to the wind direction, so that the guide plate opening at the lower end of the top cover 63 corresponds to the wind direction, thereby improving the air guiding effect. In this process, the wind blows the blades 624 to rotate the rotating tube 61 relative to the fixed tube 60. When the direction of the blades 624 is the same as the wind direction, the rotating tube 61 stops rotating at a large angle and repeatedly swings at a small angle under the influence of the airflow. When the reset boss 10 is separated from the linear guide groove 12, the rotating tube 61 is at the third height. The pushing mechanism 5 can stop the rotating tube 61 at any position between the first height and the third height, and collect air samples at the current height position.

[0064] At any position from the second height to the third height, the stepper motor 625 drives the first ring 621 to rotate relative to the guide tube 620, and at the same time, the first ring 621 slides relative to the arc groove 623. When the raised part of the first ring 621 rotates to the extreme position of the arc groove 623, the first ring 621 pulls the second ring 622 to rotate through the arc groove 623. When the first ring 621 rotates to the extreme position, the stepper motor 625 stops rotating. At this time, the three blades 624 are evenly distributed relative to the guide tube 620, and the angles between two adjacent blades 624 are the same. At this time, the rotating tube 61 continues to rotate relative to the fixed tube 60.

[0065] When the cylinder 50 pushes the fixed tube 60 to continue to rise from the third height, the push platform 17 rises synchronously at this time, so that the upper end of the driving tube 9 generates air pressure and enters the air cavity 19 through the pressurizing tube 18. Then, the extrusion rod 20 slides upward under the influence of the pressure in the air cavity 19. When the upper end of the extrusion rod 20 is placed in the lower section of the reset guide groove 11, the rotating tube 61 rotates relative to the fixed tube 60. When the upper end of the extrusion rod 20 enters the upper section of the reset guide groove 11, the rotating tube 61 cannot rotate relative to the fixed tube 60. As the extrusion rod 20 continues to rise, the upper end of the extrusion rod 20 pushes the flip push rod 13. At this time, the extrusion chute 1 Push the flip lever 15 to rotate, adjust the guide tube 620 to be vertical with the rotating tube 61, at this time, the air inlet end of the air hole 626 faces downward, the fixed tube 60 is placed at the fourth height to prevent rainwater from entering, and at the same time, the blade 624 is in a vertical state to increase the height, and the upper end of the blade 624 is connected to the ground wire to play a role in lightning protection; at the same time, the flip push rod 13 pulls the pull rod 708 upward, so that the positioning rod 707 and the closing platform 706 slide upward at the same time, and a gap is generated between the closing platform 706 and the first positioning frame 701, and dust particles enter the third hose 704 through the gap, and then the dust is analyzed and detected by the dust detector 3.

[0066] The present invention also discloses a method for monitoring air pollution in a chemical production area, comprising the following steps:

[0067] Step 1: Sampling and separation: air enters the air intake mechanism 6 and separates solid particles from gas through the separation mechanism 7;

[0068] Step 2: gas monitoring: the gas in the air inlet pipe 68 and the second air pipe 66 enters the corresponding gas monitor 2 respectively, and the incoming air is detected;

[0069] Step three, solid detection, the air intake mechanism 6 is pushed upward by the pushing mechanism 5, so that the rotating tube 61 slides out of the rotating part 4, and the wind blows the guide mechanism 62 to make the rotating tube 61 rotate relative to the fixed tube 60, and the solid particles enter the dust detector 3 through the separation mechanism 7, and the entering solid particles are detected.

[0070] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air pollution monitoring device for a chemical production area, comprising a chassis (1), a gas monitor (2) and a dust detector (3), wherein the gas monitor (2) and the dust detector (3) are both fixedly connected to the inside of the chassis (1), and characterized in that: It also comprises a rotating part (4), which is disposed on one side of the chassis (1) and is capable of rotating relative to the chassis (1), and the rotating part (4) is a hollow rod-shaped structure; A pushing mechanism (5) is disposed inside the rotating portion (4), wherein the bottom of the pushing mechanism (5) is fixedly connected to the inner side of the rotating portion (4), and the top of the pushing mechanism (5) is capable of sliding up and down along the rotating portion (4); An air intake mechanism (6) is fixedly connected to the top of the pushing mechanism (5); the lower end of the air intake mechanism (6) is placed in the rotating part (4) and is used to guide air to enter for monitoring; the air intake mechanism (6) comprises a fixed tube (60), a rotating tube (61) and a guide mechanism (62); the guide mechanism (62) is fixedly connected to the rotating tube (61); the lower end of the rotating tube (61) is rotatably connected to the fixed tube (60); the pushing mechanism (5) enables the air intake mechanism (6) to slide up and down along the rotating part (4); the lower end of the fixed tube (60) is connected to a corresponding gas monitor (2) and a dust detector (3); A separation mechanism (7) is disposed in the air intake mechanism (6) and is used to separate solids and gases in the air; The air intake mechanism (6) further comprises a top cover (63), a mesh cover (64), a first air pipe (65) and a second air pipe (66); the first air pipe (65) penetrates the rotating tube (61); the second air pipe (66) is opened in the fixed tube (60); the first air pipe (65) corresponds to and communicates with the second air pipe (66); the mesh cover (64) is placed on the outside of the rotating tube (61); the inside of the mesh cover (64) is communicated with the first air pipe (65); the top cover (63) is fixedly connected to the top of the rotating tube (61); the top cover (63) is placed above the mesh cover (64); An air pipe (67) is provided in the rotating tube (61), the upper end of the air pipe (67) is communicated with the guide mechanism (62), an air intake pipe (68) is provided on the inner side of the fixed tube (60), and the air intake pipe (68) corresponds to and is communicated with the air pipe (67); The lower end of the air inlet pipe (68) is connected to a first hose (69), the lower end of the second air pipe (66) is connected to a second hose (70), and the first hose (69) and the second hose (70) are both connected to a gas monitor (2); An extension tube (8) and a drive tube (9) are provided in the rotating portion (4), the pushing mechanism (5) is disposed in the drive tube (9), the fixed tube (60) is disposed in the extension tube (8) and is capable of sliding relative to the extension tube (8), and a reset boss (10) is fixedly connected to the inner side of the extension tube (8) for guiding the air intake mechanism (6) to reset; A reset guide groove (11) is formed on the outer side of the rotating tube (61), and a linear guide groove (12) is formed on the outer side of the fixed tube (60), wherein the linear guide groove (12) corresponds to the reset boss (10); The guide mechanism (62) comprises a guide tube (620) rotatably connected to the top cover (63); a first sleeve ring (621) and a second sleeve ring (622) are rotatably sleeved on the outer side of the guide tube (620); an arc-shaped slide groove (623) is provided in the middle of the second sleeve ring (622); the first sleeve ring (621) can slide along the arc-shaped slide groove (623); blades (624) are fixedly connected to one side of the guide tube (620), the first sleeve ring (621) and the second sleeve ring (622); a stepping motor (625) is fixedly connected to the upper end of the guide tube (620); and an output end of the stepping motor (625) is fixedly connected to the first sleeve ring (621); An air hole (626) is provided in the middle of the guide tube (620); a bellows (627) is fixedly connected between the guide tube (620) and the rotating tube (61); the bellows (627) enables the air hole (626) to communicate with the air tube (67); a closing plate (628) that can rotate relative to the axis of the guide tube (620) is provided on the outer side of the guide tube (620); the closing plate (628) penetrates the blades (624) corresponding to the first ring (621) and the second ring (622); and the closing plate (628) can prevent air from entering the air hole (626); A flip push rod (13) is slidably connected in the reset guide groove (11), the flip push rod (13) passes through the top cover (63), an extrusion chute (14) is formed at the upper end of the flip push rod (13), a flip rod (15) is fixedly connected to one side of the guide tube (620), and an end of the flip rod (15) is placed in the extrusion chute (14); The flip rod (15) rotates coaxially with the guide tube (620), and a return spring (16) is fixedly connected to the middle portion of the flip push rod (13); The separation mechanism (7) comprises a first positioning frame (701) fixedly connected to the rotating tube (61), a second positioning frame (702) is provided below the first positioning frame (701), a filter screen (703) is provided between the first positioning frame (701) and the second positioning frame (702), the second positioning frame (702) is fixedly connected to the fixed tube (60), the first positioning frame (701) is placed in the air pipe (67), the second positioning frame (702) is placed in the air intake pipe (68), the lower end of the second positioning frame (702) is connected to a third hose (704), the third hose (704) passes through the side wall of the second hose (70), and the third hose (704) is connected to the dust detector (3); A closing platform (706) is provided on the inner side of the first positioning frame (701), a positioning rod (707) is fixedly connected to the upper end of the closing platform (706), the positioning rod (707) is slidably connected to the rotating tube (61), a pull rod (708) is slidably connected to the upper end of the positioning rod (707), and the upper end of the pull rod (708) is fixedly connected to the flip push rod (13); The pushing mechanism (5) comprises a cylinder (50) and a guide frame (51); the lower end of the cylinder (50) is fixedly connected to the rotating part (4); the guide frame (51) is fixedly connected to the output end of the cylinder (50); the guide frame (51) is placed in the extension tube (8) and the drive tube (9); and the bottom of the fixed tube (60) is fixedly connected to the guide frame (51).

2. The chemical production area air pollution monitoring device according to claim 1 is characterized in that: The upper end of the guide frame (51) is fixedly connected to a push platform (17), the push platform (17) is coaxial with the drive tube (9), the upper end of the drive tube (9) is connected to a pressurizing tube (18), the side wall of the fixed tube (60) is provided with an air cavity (19), an extrusion rod (20) is slidably arranged in the air cavity (19), and the bottom of the air cavity (19) is connected to the pressurizing tube (18).

3. The chemical production area air pollution monitoring device according to claim 1 is characterized in that: A servo motor (21) is fixedly connected inside the chassis (1), a driving gear (22) is fixedly connected to the outside of the output shaft of the servo motor (21), the rotating part (4) passes through the side wall of the chassis (1), and its end is gear-shaped, and the driving gear (22) is meshed with the rotating part (4).

4. A method for monitoring air pollution in a chemical production area, applied to the device for monitoring air pollution in a chemical production area according to claim 1, characterized in that: The following steps are involved: Step 1: sampling and separation, air enters the air intake mechanism (6) and passes through the separation mechanism (7) to separate solid particles from gas; Step 2: gas monitoring, the gas in the air inlet pipe (68) and the second air pipe (66) respectively enters the corresponding gas monitor (2), and the incoming air is tested; Step 3: solid detection. The air intake mechanism (6) is pushed upward by the pushing mechanism (5) to make the rotating tube (61) slide out of the rotating part (4). The wind blows the guide mechanism (62) to make the rotating tube (61) rotate relative to the fixed tube (60). The solid particles enter the dust detector (3) through the separation mechanism (7), and the entering solid particles are detected.

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