An atmospheric treatment sampling device

Abstract

The present invention belongs to the technical field of gas sampling, and in particular, relates to an atmospheric governance sampling device, including an annular base and a support column fixedly plugged into the inside of the annular base, and also includes: a top seat, the top seat is installed on the top of the support column, a ventilation box is fixedly installed on the top of the top seat, and a ventilation assembly is installed inside the ventilation box; a rain cover is detachably arranged on the top of the ventilation box, a mounting cover is fixedly installed on the bottom of the rain cover, and the mounting cover is slidably plugged with the top of the ventilation box. The present invention can automatically perform sampling based on changes in the atmospheric environment, reduce repeated sampling while ensuring the timeliness of sampling, and can use the heat source of the trigger prompt to dry the moisture on the surface of the detection device in time, reduce the possibility of damage to the detection device, and at the same time, can prevent the external air and the air retained by the previous sampling from affecting the accuracy of the air sample.

Description

Technical Field

[0001] The invention belongs to the technical field of gas sampling, and in particular relates to an atmosphere treatment sampling device. Background Art

[0002] As environmental issues receive more and more attention, atmospheric sampling becomes increasingly important. It can accurately obtain data on various components in the atmosphere, providing key basis for air quality assessment, pollution prevention and control, and scientific research, and plays an irreplaceable role in maintaining ecological balance.

[0003] At present, there are many ways to sample atmospheric air, such as mobile sampling devices, fixed sampling devices, etc. Mobile sampling devices are easy to carry, convenient to sample, and highly flexible to use, while fixed sampling devices can collect air at a certain sampling point for a long time, thereby facilitating continuous atmospheric environment testing in a certain area, such as a high-altitude sampling device for pollutants used in air pollution control disclosed in patent publication number CN113607502B;

[0004] Most fixed sampling devices now follow a timed sampling method, for example, sampling once every 4 hours (this time can be adjusted according to sampling needs, sampling location and other factors). However, for sampling points with relatively stable atmospheric environments, this timed sampling method may lead to repeated sampling of gases, that is, the gas components detected subsequently are mostly similar, which unnecessarily increases the detection workload and lacks flexibility. Although the unnecessary detection workload can be reduced by extending the interval time, the atmospheric environment changes may not be discovered in time due to the long interval time, affecting the atmospheric environment quality assessment, pollution prevention and control and other work. Summary of the invention

[0005] The purpose of the present invention is to provide an atmosphere control sampling device in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical solution: an air treatment sampling device, comprising an annular base and a support column fixedly plugged into the annular base, and also comprising:

[0007] A top seat is installed on the top of the support column, a ventilation box is fixedly installed on the top of the top seat, and a ventilation assembly is installed inside the ventilation box;

[0008] A rainproof top cover is detachably arranged on the top of the ventilation box, a mounting cover is fixedly installed on the bottom of the rainproof top cover, and the mounting cover is slidably plugged with the top of the ventilation box, a plurality of mounting holes are opened on the bottom of the mounting cover, a plurality of gas detection components are arranged inside the mounting cover, and the detection ends of the various detection probes of the gas detection components pass through the corresponding mounting holes and extend to the inside of the ventilation box;

[0009] A trigger start unit is installed on the side wall of the top seat, and a control cabinet is fixedly installed on the outer side wall of the annular base. The control cabinet controls the trigger start unit to work according to the electrical signal output by the gas detection component. When the change amount of pollutants in the air environment exceeds a threshold, the trigger start unit outputs an electrical signal to the control cabinet;

[0010] The trigger alarm unit is sleeved on the upper end of the outer wall of the support column. The control cabinet controls the trigger alarm unit to work according to the electrical signal output by the trigger start unit. The control cabinet starts the air sampling work according to the electrical signal output by the trigger alarm unit and sends prompt information to the remote terminal.

[0011] An air supply mechanism is installed inside the top seat, and an air outlet end of the air supply mechanism is connected to the inside of the trigger alarm unit;

[0012] The sample storage unit is arranged inside the annular base and is connected to the air outlet end of the air supply mechanism. The sample storage unit is used to store air samples.

[0013] Preferably, the ventilation assembly includes a partition fixedly installed inside the ventilation box, and the side walls of the partition are provided with ventilation holes. A fan is installed inside the ventilation box at a position on the side of the partition away from the mounting cover. The side walls of the ventilation box on the suction end side and the exhaust end side of the fan are provided with multiple air holes. A plurality of isolation sleeves are fixedly installed on the inner bottom of the ventilation box, and the top of each isolation sleeve is abutted against the bottom of the mounting cover. Each detection probe of the gas detection assembly is located inside a corresponding isolation sleeve, and two opposite side walls of the isolation sleeve are provided with connecting holes, and the fan is electrically connected to the control cabinet.

[0014] Preferably, the trigger starting unit includes a plurality of insulating square tubes fixedly mounted on the side walls of the top seat, a main electromagnetic push rod and a secondary electromagnetic push rod are installed inside each of the insulating square tubes, and non-magnetic movable blocks are installed on the telescopic ends of the main electromagnetic push rod and the secondary electromagnetic push rod, a light is fixedly mounted on the side wall of the non-magnetic movable block connected to the main electromagnetic push rod, and a photoelectric switch is fixedly mounted on the side wall of the non-magnetic movable block connected to the secondary electromagnetic push rod, a light-emitting surface of the light is arranged opposite to a light-sensitive surface of the photoelectric switch, each detection probe of the gas detection assembly is electrically connected to the corresponding main electromagnetic push rod and secondary electromagnetic push rod through a control cabinet, and the light-emitting lamp and the photoelectric switch are electrically connected to the control cabinet, and each of the non-magnetic movable blocks is jointly installed with a magnetic suction fixing mechanism with the insulating square tube on the same side.

[0015] Preferably, the trigger alarm unit includes an insulating disc fixedly mounted on the outer wall of the support column, a plurality of exhaust passages are provided on the side wall of the insulating disc, and an electric heating block and a temperature switch are fixedly installed inside each exhaust passage, and the heat-sensing surface of the temperature switch is arranged opposite to the heating surface of the electric heating block, a first normally open solenoid valve is installed inside each exhaust passage, the control cabinet controls the operation of the electric heating block according to the disconnection electrical signal of the photoelectric switch, and the temperature switch and the first normally open solenoid valve are electrically connected to the control cabinet.

[0016] Preferably, the air supply mechanism includes an installation cavity opened inside the top seat, and an air pump is installed inside the installation cavity, a ventilation groove is opened at the top center of the support column, and the air outlet end of the air pump is connected with the ventilation groove, the air inlet end of each exhaust channel is connected with the ventilation groove, the air suction end of the air pump passes through the cavity wall of the installation cavity and extends to the outside of the top seat, and the air pump is electrically connected to the control cabinet.

[0017] Preferably, the sample storage unit includes a plurality of storage cavities opened inside the annular base, and a glass container is fixedly installed inside each storage cavity, the bottom of the glass container and the side wall of the ventilation groove are jointly provided with sample storage holes, and a first normally closed solenoid valve is installed inside each sample storage hole, a second normally closed solenoid valve is fixedly installed at a position below the insulating disc inside the ventilation groove, and the first normally closed solenoid valve and the second normally closed solenoid valve are both electrically connected to the control cabinet, and a sampling mechanism is installed inside each of the glass containers.

[0018] Preferably, a humidity detector is fixedly installed on the side wall of the top seat, a hollow ring is fixedly sleeved on the outer wall of the insulating disc, and each exhaust channel is connected to the interior of the hollow ring, an exhaust pipe and a heating pipe are fixedly inserted on the side wall of the hollow ring, a second normally open solenoid valve is installed inside the exhaust pipe, and a third normally closed solenoid valve is installed inside the heating pipe, the control cabinet controls the operation of each electric heating block, the second normally open solenoid valve and the third normally closed solenoid valve according to the electrical signal output by the humidity detector, and the air outlet end of the heating pipe is connected to the interior of the ventilation box.

[0019] Preferably, each of the sampling mechanisms includes a piston slidably arranged inside the glass container, and a sampling tube is fixedly inserted into the end face of the piston, a fourth normally closed solenoid valve is fixedly installed on the lower inner side of the sampling tube, a sealing cover is threadedly connected to the sampling end of the sampling tube, an air exchange hole is opened on the wall of the sample storage hole, and a fifth normally closed solenoid valve is installed inside the air exchange hole, the fourth normally closed solenoid valve and the fifth normally closed solenoid valve are both electrically connected to the control cabinet, and a support spring is fixedly provided between the piston and the inner top of the glass container.

[0020] Preferably, each of the magnetic fixing mechanisms includes an electromagnetic block arranged on one side of the non-magnetic movable block, and the electromagnetic block and the non-magnetic movable block are jointly installed with an elastic telescopic component, and the inner wall of the insulating square tube is fixedly installed with an iron bar corresponding to the position of the electromagnetic block, and the electromagnetic block is electrically connected to the control cabinet.

[0021] Compared with the existing technology, the advantages of an atmospheric treatment sampling device are:

[0022] 1. Through the cooperation of the annular base, support column, top seat, ventilation box, ventilation assembly, rainproof cover, installation cover, installation hole, and gas detection assembly, the air quality in the atmospheric environment can be initially detected. In conjunction with the trigger start unit and trigger alarm unit, sampling can be performed when the air environment changes significantly, and erroneous sampling caused by occasional changes in the air environment can be prevented, thereby improving the representativeness of sampling, reducing repeated sampling, reducing subsequent detection work, and reducing repeated sampling of the atmospheric environment. The timeliness of sampling of the atmospheric environment can be ensured.

[0023] 2. The air supply mechanism can supply air to the trigger alarm unit, and the sample storage unit can automatically perform air sampling when the atmospheric environment needs to be sampled. In addition, the humidity detector, hollow ring, tail gas pipe, heating tube, second normally open solenoid valve and third normally closed solenoid valve can be used to dry the gas detection component in time when the air humidity is too high, so as to avoid long-term contact between moisture and the gas detection component, which may cause damage to the gas detection component.

[0024] 3. By setting up the sampling mechanism, it is possible to avoid external air and retained air from the previous sampling from mixing into the sample, which is beneficial to improving the accuracy of atmospheric air detection, thereby helping to improve the effect of atmospheric governance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an atmospheric governance sampling device provided by the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of a ventilation box of an atmosphere treatment sampling device provided by the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional connection structure between the top seat and the mounting cover of an atmosphere treatment sampling device provided by the present invention;

[0028] Figure 4 It is a schematic diagram of the internal structure of an insulating square cylinder of an atmosphere treatment sampling device provided by the present invention;

[0029] Figure 5 The present invention provides an atmospheric treatment sampling device Figure 4 A magnified view of the structure of part A;

[0030] Figure 6 It is a schematic diagram of the internal structure of an insulating disc of an atmosphere treatment sampling device provided by the present invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of an annular base of an atmosphere treatment sampling device provided by the present invention;

[0032] Figure 8 The present invention provides an atmospheric treatment sampling device Figure 7 A magnified view of the structure of part B.

[0033] In the figure: 1 annular base, 2 supporting column, 3 top seat, 4 ventilation box, 5 ventilation assembly, 51 partition, 52 ventilation hole, 53 fan, 54 air hole, 55 isolation sleeve, 56 connecting hole, 6 rain cover, 7 mounting cover, 8 mounting hole, 9 gas detection assembly, 10 trigger start unit, 101 insulating square tube, 102 main electromagnetic push rod, 103 auxiliary electromagnetic push rod, 104 non-magnetic movable block, 105 light lamp, 106 photoelectric switch, 11 control cabinet, 12 trigger alarm unit, 121 insulating disc, 122 exhaust channel, 123 electric heating block, 124 temperature switch, 125 first normally open electromagnetic valve, 13 air supply mechanism, 13 1 air pump, 132 ventilation slot, 133 installation cavity, 14 sample storage unit, 141 storage cavity, 142 glass container, 143 sample storage hole, 144 first normally closed solenoid valve, 145 second normally closed solenoid valve, 15 sampling mechanism, 151 piston, 152 sampling tube, 153 fourth normally closed solenoid valve, 154 sealing cover, 155 air exchange hole, 156 fifth normally closed solenoid valve, 157 support spring, 16 humidity detector, 17 hollow ring, 18 exhaust pipe, 19 heating tube, 20 second normally open solenoid valve, 21 third normally closed solenoid valve, 22 magnetic fixing mechanism, 221 electromagnetic block, 222 elastic telescopic component, 223 iron bar. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] like Figure 1-Figure 8As shown, an air treatment sampling device includes an annular base 1 and a support column 2 fixedly inserted in the annular base 1, and also includes: a top seat 3, the top seat 3 is installed on the top of the support column 2, a ventilation box 4 is fixedly installed on the top of the top seat 3, a ventilation assembly 5 is installed inside the ventilation box 4, the ventilation assembly 5 includes a partition 51 fixedly installed inside the ventilation box 4, and the side wall of the partition 51 is provided with a ventilation hole 52, a fan 53 is installed inside the ventilation box 4 at a position on the side of the partition 51 away from the installation cover 7, and the ventilation box 4 is located at the fan 53 suction The side walls on the wind end side and the side walls on the exhaust end side are both provided with multiple air holes 54, and multiple isolation sleeves 55 are fixedly installed on the inner bottom of the ventilation box 4, and the top of each isolation sleeve 55 is against the bottom of the mounting cover 7, and each detection probe of the gas detection component 9 is located inside the corresponding isolation sleeve 55, and the two opposite side walls of the isolation sleeve 55 are provided with connecting holes 56, and the fan 53 is electrically connected to the control cabinet 11. The fan 53 can actively inhale the external airflow, thereby ensuring the air flow to ensure the detection effect of the gas detection component 9.

[0036] The rainproof top cover 6 is detachably arranged on the top of the ventilation box 4, and a mounting cover 7 is fixedly installed on the bottom of the rainproof top cover 6, and the mounting cover 7 is slidably plugged with the top of the ventilation box 4, and a plurality of mounting holes 8 are opened at the bottom of the mounting cover 7. A plurality of gas detection components 9 are arranged inside the mounting cover 7, and the detection ends of each detection probe of the gas detection component 9 pass through the corresponding mounting holes 8 and extend to the inside of the ventilation box 4. The trigger start unit 10 is installed on the side wall of the top seat 3, and a control cabinet 11 is fixedly installed on the outer wall of the annular base 1. The control cabinet 11 controls the trigger start unit 10 to work according to the electrical signal output by the gas detection component 9. After the change amount of pollutants in the air environment exceeds a threshold value (the threshold value refers to the change amount of air pollutants causing the photoelectric switch 106 to be higher or lower than the height of the corresponding light-emitting lamp 105 by 3 cm), the trigger start unit 10 outputs an electrical signal to the control cabinet 11. The trigger start unit 10 includes a plurality of insulating square tubes 101 fixedly installed on the side wall of the top seat 3, and each insulating square tube A main electromagnetic push rod 102 and a sub-electromagnetic push rod 103 are installed inside each of the electromagnetic push rods 101, and a non-magnetic movable block 104 is installed at the telescopic end of each of the main electromagnetic push rod 102 and the sub-electromagnetic push rod 103. A light emitting lamp 105 is fixedly installed on the side wall of the non-magnetic movable block 104 connected to the main electromagnetic push rod 102, and a photoelectric switch 106 is fixedly installed on the side wall of the non-magnetic movable block 104 connected to the sub-electromagnetic push rod 103. The light emitting surface of the light emitting lamp 105 is aligned with the light sensitive surface of the photoelectric switch 106. Regarding the setting, each detection probe of the gas detection component 9 is electrically connected to the corresponding main electromagnetic push rod 102 and auxiliary electromagnetic push rod 103 through the control cabinet 11, and the light 105 and the photoelectric switch 106 are electrically connected to the control cabinet 11, and each non-magnetic movable block 104 is jointly installed with a magnetic fixing mechanism 22 on the same side insulating square tube 101, and the photoelectric switch 106 can convert the optical signal into an electrical signal and output it to the control cabinet 11. This is an existing mature technology, so it will not be elaborated here.

[0037] Each magnetic fixing mechanism 22 includes an electromagnetic block 221 arranged on one side of the non-magnetic movable block 104, and the electromagnetic block 221 and the non-magnetic movable block 104 are jointly installed with an elastic telescopic component 222. The inner wall of the insulating square tube 101 is fixedly installed with an iron bar 223 corresponding to the position of the electromagnetic block 221. The electromagnetic block 221 is electrically connected to the control cabinet 11. The elastic telescopic component 222 includes a telescopic rod, an elastic element and other components. A cavity is opened inside the non-magnetic movable block 104, the telescopic rod is slidably connected to the cavity, and the elastic element is arranged between the telescopic rod and the cavity, so as to ensure that the electromagnetic block 221 can be stably adsorbed with the iron bar 223.

[0038] The trigger alarm unit 12 is sleeved on the upper end of the outer wall of the support column 2. The control cabinet 11 controls the trigger alarm unit 12 to work according to the electrical signal output by the trigger start unit 10. The control cabinet 11 starts the air sampling work according to the electrical signal output by the trigger alarm unit 12 and sends a prompt message to the remote terminal. The trigger alarm unit 12 includes an insulating disc 121 fixedly sleeved on the outer wall of the support column 2. The side wall of the insulating disc 121 is provided with a plurality of exhaust channels 122, and an electric heating block is fixedly installed inside each exhaust channel 122. 123 and a temperature switch 124, and the heat-sensing surface of the temperature switch 124 is arranged opposite to the heating surface of the electric heating block 123, and a first normally-open solenoid valve 125 is installed inside each exhaust duct 122. The control cabinet 11 controls the operation of the electric heating block 123 according to the disconnection electrical signal of the photoelectric switch 106. The temperature switch 124 and the first normally-open solenoid valve 125 are both electrically connected to the control cabinet 11. The temperature switch 124 uses a thermosensitive material as a heat-sensing end. Within a certain temperature range, the thermosensitive material's own resistance decreases as the temperature increases.

[0039] The air supply mechanism 13 is installed inside the top seat 3, and the air outlet end of the air supply mechanism 13 is connected with the interior of the trigger alarm unit 12. The air supply mechanism 13 includes an installation cavity 133 opened inside the top seat 3, and an air pump 131 is installed inside the installation cavity 133. A ventilation groove 132 is opened at the top center of the support column 2, and the air outlet end of the air pump 131 is connected with the ventilation groove 132. The air inlet end of each exhaust channel 122 is connected with the ventilation groove 132. The air suction end of the air pump 131 passes through the cavity wall of the installation cavity 133 and extends to the outside of the top seat 3. The air pump 131 is electrically connected to the control cabinet 11. The air pump 131 can inhale external air and transport it to the inside of the ventilation groove 132.

[0040] The sample storage unit 14 is arranged inside the annular base 1, and the sample storage unit 14 is connected to the air outlet end of the air supply mechanism 13. The sample storage unit 14 is used to store air samples. The sample storage unit 14 includes a plurality of storage chambers 141 opened inside the annular base 1, and a glass container 142 is fixedly installed inside each storage chamber 141. The bottom of the glass container 142 and the side wall of the ventilation groove 132 are jointly provided with a sample storage hole 143, and a first normally closed solenoid valve 144 is installed inside each sample storage hole 143. A second normally closed solenoid valve 145 is fixedly installed inside the ventilation groove 132 at a position below the insulating disc 121, and the first normally closed solenoid valve 144 and the second normally closed solenoid valve 145 are both electrically connected to the control cabinet 11. A sampling mechanism 15 is installed inside each glass container 142, and the air pump 131 can transport air samples to the inside of the sample storage hole 143 through the ventilation groove 132.

[0041] Each sampling mechanism 15 includes a piston 151 slidably arranged inside the glass container 142, and a sampling tube 152 is fixedly inserted on the end face of the piston 151, a fourth normally closed solenoid valve 153 is fixedly installed on the lower side of the interior of the sampling tube 152, a sealing cover 154 is threadedly connected to the sampling end of the sampling tube 152, an air exchange hole 155 is opened on the hole wall of the sample storage hole 143, and a fifth normally closed solenoid valve 156 is installed inside the air exchange hole 155, the fourth normally closed solenoid valve 153 and the fifth normally closed solenoid valve 156 are both electrically connected to the control cabinet 11, a supporting spring 157 is fixedly arranged between the piston 151 and the inner top of the glass container 142, and the residual air in the ventilation slot 132 and the sample storage hole 143 can be discharged through the air exchange hole 155 before the air sample is transported into the glass container 142, thereby improving the accuracy of the stored samples.

[0042] A humidity detector 16 is fixedly installed on the side wall of the top seat 3, a hollow ring 17 is fixedly sleeved on the outer wall of the insulating disc 121, and each exhaust channel 122 is connected to the interior of the hollow ring 17, and an exhaust pipe 18 and a heating pipe 19 are fixedly inserted on the side wall of the hollow ring 17. A second normally open solenoid valve 20 is installed inside the exhaust pipe 18, and a third normally closed solenoid valve 21 is installed inside the heating pipe 19. The control cabinet 11 controls the operation of each electric heating block 123, the second normally open solenoid valve 20 and the third normally closed solenoid valve 21 according to the electrical signal output by the humidity detector 16, and the air outlet end of the heating pipe 19 is connected to the interior of the ventilation box 4. The humidity detector 16 can detect moisture in the air and transmit an electrical signal to the control cabinet 11 after the humidity reaches a set value. This is an existing mature technology, so it will not be elaborated here.

[0043] The operating principle of the present invention is now described as follows: the entire device is installed at a suitable sampling location, and the external power supply cable is connected to the power supply terminal of the control cabinet 11, and then the control cabinet 11 is started to start sampling the atmospheric air;

[0044] When the control cabinet 11 is initially started, the fan 53 will be immediately controlled to work. When the fan 53 is working, it can actively inhale the external air through the air hole 54 on the side of the air suction end, and discharge it from the air hole 54 on the side of the air outlet end through the ventilation hole 52 on the side wall of the partition 51. The air flow around the sampling point is ensured by active inhalation. After the air flow passes through the ventilation hole 52, it passes through the inside of each isolation sleeve 55 through each connecting hole 56. After the control cabinet 11 is started, the gas detection component 9 will be controlled to work (the gas detection component 9 includes a plurality of detection probes, each of which can be specifically used to detect a certain pollutant in the air, such as a volatile organic compound gas detection probe, an electrochemical carbon monoxide detection probe, a sulfur dioxide gas detection probe, a laser particle detection probe, etc. The staff can detect the gas according to the detection According to the requirements, corresponding gas detection probes are installed in each mounting hole 8). Since each detection probe of the gas detection component 9 is inside the corresponding isolation sleeve 55, each detection probe of the gas detection component 9 can detect the airflow passing through the isolation sleeve 55, and each detection probe of the gas detection component 9 can convert the corresponding gas concentration into an electrical signal and output it to the control cabinet 11 (taking the laser particle detection probe as an example, based on the laser scattering principle, when the laser is irradiated on the suspended particles in the air, scattered light is generated, and the intensity of the scattered light is proportional to its mass concentration. The particle concentration value is calculated by measuring the scattered light intensity. The higher the particle concentration, the more scattered light, and the higher the light intensity received by the detection probe receiving end, so the electrical signal intensity output by the laser particle detection probe is higher);

[0045] After the control cabinet 11 is initially started, the control cabinet 11 will proportionally amplify the electrical signals output by each detection probe of the gas detection component 9 and input them to the main electromagnetic push rod 102. After the main electromagnetic push rod 102 works, it will push the non-magnetic movable block 104 on the same side to drive the light 105 to move upward, and then the control cabinet 11 controls the electromagnetic block 221 at the non-magnetic movable block 104 to be energized and work. Under the action of magnetic attraction, the electromagnetic block 221 is adsorbed and fixed to the iron bar 223 on the same side (when the electromagnetic block 221 is fixed by electromagnetic attraction, even if the main electromagnetic push rod 102 is powered off, the non-magnetic movable block 104 will not move down and reset, ensuring the stability of the non-magnetic movable block 104). Subsequently, the control cabinet 11 controls each auxiliary electromagnetic push rod 103 to be energized and work. At this time, the auxiliary electromagnetic push rods 103 The non-magnetic movable block 104 corresponding to the rod 103 will drive the photoelectric switch 106 to move upward. After the control cabinet 11 is initially started, the main electromagnetic push rod 102 and the auxiliary electromagnetic push rod 103 work in sequence. In this extremely short period of time (within 10 seconds), the air environment of the atmosphere will not change significantly. Therefore, the current intensity passing through each main electromagnetic push rod 102 and each auxiliary electromagnetic push rod 103 is similar. At this time, the height of the non-magnetic movable block 104 corresponding to the main electromagnetic push rod 102 and the auxiliary electromagnetic push rod 103 is similar. Therefore, the light emitted by the light lamp 105 will irradiate the corresponding photoelectric switch 106, and the photoelectric switch 106 can convert the optical signal into an electrical signal and output it to the control cabinet 11. Therefore, the control cabinet 11 can receive the electrical signals output by all the photoelectric switches 106;

[0046] As time goes by, when the air environment around the sampling point changes, the electrical signal output by the detection probe of the gas detection component 9 will also change synchronously. Therefore, the current intensity input to the corresponding auxiliary electromagnetic push rod 103 after amplification by the control cabinet 11 will also change. At this time, the height of the photoelectric switch 106 will also change synchronously. When the photoelectric switch 106 is 3 cm higher or lower than the height of the corresponding light lamp 105, the photoelectric switch 106 will be unable to receive the light emitted by the light lamp 105 due to excessive offset from the light lamp 105. At this time, the electrical signal output by the photoelectric switch 106 to the control cabinet 11 is disconnected. At this time, the control cabinet 11 will control the air pump 131 to start working, and control the electric heating block 123 and the temperature switch 124 corresponding to the photoelectric switch 106 to start working. At this time, the air pump 131 will convey airflow to the inside of each exhaust channel 122 through the ventilation slot 132, and finally discharge it through the hollow ring 17 and the tail pipe 18. If the air environment only changes occasionally, resulting in the photoelectric switch 106 being unable to receive the light of the light lamp 105, Then the electric heating block 123 will only work for a short time. During this time, since the air flow delivered by the air pump 131 can take away part of the heat, the electric heating block 123 cannot quickly raise the corresponding temperature switch 124 to a sufficient temperature. If the air environment has a continuous excessive change, the electric heating block 123 will continue to work (generally it needs to work continuously for more than 1 minute. This time is affected by the air temperature at the sampling location, and the general error is within 10 seconds). At this time, the air flow delivered by the air pump 131 is not enough to keep the temperature switch 124 at a low temperature. That is, the temperature switch 124 will continue to rise under the continuous heating of the electric heating block 123. When the temperature switch 124 rises to 60°C, the moving contact of the temperature switch 124 will close (the temperature switch 124 uses a thermosensitive material as the heat-sensing end. The thermosensitive material has a range of -20°C to 100°C, and its own resistance decreases with the increase of temperature). At this time, the temperature switch 124 will output an electrical signal to the control cabinet 11, indicating that a certain pollutant in the air environment has an excessive change, and sampling should be performed at this time;

[0047] When sampling, the control cabinet 11 controls the air pump 131 to continue working, and controls the first normally open solenoid valve 125 and the second normally closed solenoid valve 145 in each exhaust channel 122 to be powered on, and at the same time, controls the first normally closed solenoid valve 144 in one of the sample storage holes 143 to be powered on (each first normally closed solenoid valve 144 works in sequence in a clockwise direction, that is, each time the control cabinet 11 starts a sampling operation, the control cabinet 11 controls the corresponding first normally closed solenoid valve 144 to work in this order). At this time, the airflow delivered by the air pump 131 enters the corresponding glass container 142 through the ventilation slots 132 and the sample storage holes 143. As the amount of air inside the glass container 142 increases, the piston 151 at this position will be pushed upward, so that a certain amount of air can be stored. After the first normally closed solenoid valve 144 in the sample storage hole 143 works for 20 seconds, the control cabinet 11 controls the air pump 131, the first normally open solenoid valve 125, the second normally closed solenoid valve 145 and the first normally closed solenoid valve 144 to stop working, and a single sample storage operation is completed. Then, the control cabinet 11 sends a prompt message to the remote terminal through its own communication module (the staff can transfer the stored air sample immediately, or wait until all the glass containers 142 have stored air samples and then transfer all the air samples together);

[0048] Among them, after a single sample storage work is completed, the control cabinet 11 controls the electromagnetic block 221 at the auxiliary electromagnetic push rod 103 to be powered on. At this time, the electromagnetic block 221 is magnetically fixed to the iron bar 223, and then the control cabinet 11 controls the auxiliary electromagnetic push rod 103 to be powered off (because the electromagnetic block 221 at the auxiliary electromagnetic push rod 103 is magnetically fixed to the iron bar 223 on the same side, the position of the non-magnetic movable block 104 on this side is fixed, and when the auxiliary electromagnetic push rod 103 is powered off, its telescopic end will not drive the non-magnetic movable block 104 to move back), and then the control cabinet 11 amplifies the electrical signal input by the detection probe of the corresponding gas detection component 9 and passes it to the corresponding main electromagnetic push rod 102, and the main electromagnetic push rod 102 The corresponding electromagnetic block 221 is powered off, and then the main electromagnetic push rod 102 drives the light 105 to move to the vicinity of the corresponding photoelectric switch 106 through the non-magnetic movable block 104 on the same side, so that the photoelectric switch 106 receives the light again and outputs an electrical signal to the control cabinet 11 until the next time the temperature switch 124 outputs an electrical signal to the control cabinet 11, the control cabinet 11 starts sampling again, and after each sampling, the control cabinet 11 switches the corresponding main electromagnetic push rod 102 and the auxiliary electromagnetic push rod 103 to power on, so that the current air environment can be used as a reference, and sampling is performed only after the air environment changes excessively, which can greatly reduce the number of invalid samplings;

[0049] When the staff takes out the air sample from the glass container 142, the staff first unscrews the sealing cover 154 at the corresponding sampling tube 152, and controls the fourth normally closed solenoid valve 153 inside the corresponding sampling tube 152 through the control cabinet 11 to energize and work. At this time, under the action of the supporting spring 157, the piston 151 will begin to move downward, and discharge the air stored in the glass container 142 through the sampling tube 152. The staff connects the sampling container (the sampling container is a container for the staff to transfer the air sample, and the staff can transfer the air sample out and carry it to the place for testing the air sample through the sampling container) with the sampling tube 152 to extract the stored air sample (because there is external air inside the sampling tube 152, in order to reduce the interference of external air, after the sampling tube 152 is opened, do not connect the sampling tube 152 with the sampling container immediately. After waiting for about 3 seconds, the sampling tube 152 is connected to the sampling container, thereby reducing the interference of external air on the air sample). After the sampling tube 152 is moved back and reset, the transfer of the air sample is completed. Before the control cabinet 11 controls the first normally closed solenoid valve 144 inside the sample storage hole 143 to work, the control cabinet 11 first controls the fifth normally closed solenoid valve 156 inside the air exchange hole 155 connected to the sample storage hole 143 to work for 5 seconds, and then controls the first normally closed solenoid valve 144 in the sample storage hole 143 to work. In this way, before the air pump 131 transports the air sample into the glass container 142, it can use the airflow to discharge the air originally flowing in the ventilation groove 132 and the sample storage hole 143, thereby avoiding the interference of the gas retained in the ventilation groove 132 and the sample storage hole 143 on the air sample, thereby helping to improve the accuracy of subsequent air sample detection;

[0050] After the control cabinet 11 is started, the control cabinet 11 will control the humidity detector 16 to start working. When the air humidity is higher than 60%, the humidity detector 16 will output an electrical signal to the control cabinet 11, and the control cabinet 11 will prepare for an air drying operation. The air drying operation starts after the electrical signal output by the humidity detector 16 is disconnected. When the control cabinet 11 starts the air drying operation, the control cabinet 11 will control the air pump 131, each electric heating block 123, the second normally open solenoid valve 20 inside the tail pipe 18, and the third normally closed solenoid valve 21 inside the heating tube 19 to work. At this time, the air flow delivered by the air pump 131 will be heated by the electric heating block 123 (the heating temperature does not exceed 40°C. When the sampling operation is started, the heating temperature of the electric heating block 123 needs to reach 60°C to close the moving contact of the temperature switch 124, and Output an electrical signal to the control cabinet 11, and then the control cabinet 11 will start the sampling work. Therefore, during the air-drying work, since the heating temperature of the electric heating block 123 is up to 40°C, the control cabinet 11 will not start the sampling work), and the heated air will be transported to the inside of the ventilation box 4 through the heating tube 19. Under the action of the fan 53, the hot air will flow through the various detection probes of the gas detection component 9, so that the moisture that may be attached to the surface of the detection probe can be quickly dried, thereby avoiding the continuous attachment of moisture to the surface of the detection probe of the gas detection component 9, causing the detection probe to be damaged, and affecting the detection of the air by the detection probe. The air-drying work lasts for 5 minutes, and then the control cabinet 11 controls the air pump 131, the electric heating block 123, the second normally open solenoid valve 20 and the third normally closed solenoid valve 21 to cut off the power;

[0051] Among them, after the control cabinet 11 controls the first normally closed solenoid valve 144 inside each sample storage hole 143 to work once in sequence, the control cabinet 11 will send a sampling prompt message to the remote terminal and stop working. Even if the staff has transferred the previously stored air samples, the control cabinet 11 will still stop working and the staff needs to start it again. This ensures that after the control cabinet 11 has worked for a period of time, the staff needs to come to the site to maintain the entire device, thereby extending the service life of the entire device;

[0052] During the above working process, after the control cabinet 11 is initially started, the main electromagnetic push rod 102 is energized once. After 10 seconds, the control cabinet 11 controls the main electromagnetic push rod 102 and the auxiliary electromagnetic push rod 103 to switch work. At this time, the main electromagnetic push rod 102 is powered on, and the auxiliary electromagnetic push rod 103 is powered on. While waiting for the air environment to change, the auxiliary electromagnetic push rod 103 is continuously powered on. After the air environment changes, the control cabinet 11 controls a sampling work, and the control cabinet 11 controls the main electromagnetic push rod 102 and the auxiliary electromagnetic push rod 103 to switch again. At this time, the main electromagnetic push rod 102 is powered on, and the auxiliary electromagnetic push rod 103 is powered off. While waiting for the air environment to change, the main electromagnetic push rod 102 is continuously powered on until a sampling work is performed again. The control cabinet 11 controls the main electromagnetic push rod 102 and the auxiliary electromagnetic push rod 103 to switch work again. At this time, the main electromagnetic push rod 102 is powered off, and the auxiliary electromagnetic push rod 103 is continuously powered on, and the above steps are repeated.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An atmospheric treatment sampling device, comprising an annular base (1) and a support column (2) fixedly plugged into the annular base (1), characterized in that: Also includes: A top seat (3) is mounted on the top of the support column (2); a ventilation box (4) is fixedly mounted on the top of the top seat (3); a ventilation assembly (5) is installed inside the ventilation box (4); A rainproof top cover (6) is detachably arranged on the top of the ventilation box (4); a mounting cover (7) is fixedly mounted on the bottom of the rainproof top cover (6), and the mounting cover (7) is slidably plugged with the top of the ventilation box (4); a plurality of mounting holes (8) are provided on the bottom of the mounting cover (7); a plurality of gas detection components (9) are arranged inside the mounting cover (7), and the detection ends of the detection probes of the gas detection components (9) pass through the corresponding mounting holes (8) and extend into the interior of the ventilation box (4); A trigger start unit (10) is mounted on a side wall of the top seat (3); a control cabinet (11) is fixedly mounted on the outer side wall of the annular base (1); the control cabinet (11) controls the trigger start unit (10) to operate according to an electrical signal output by the gas detection component (9); and the trigger start unit (10) outputs an electrical signal to the control cabinet (11) when the amount of change of pollutants in the air environment exceeds a threshold value; A trigger alarm unit (12) is sleeved on the upper end of the outer wall of the support column (2); the control cabinet (11) controls the trigger alarm unit (12) to operate according to the electrical signal output by the trigger start unit (10); the control cabinet (11) starts the air sampling operation according to the electrical signal output by the trigger alarm unit (12), and sends a prompt message to the remote terminal; An air supply mechanism (13) is installed inside the top seat (3), and an air outlet end of the air supply mechanism (13) is connected to the inside of the trigger alarm unit (12); A sample storage unit (14) is arranged inside the annular base (1), and the sample storage unit (14) is connected to the air outlet end of the air supply mechanism (13), and the sample storage unit (14) is used to store air samples; The trigger start unit (10) comprises a plurality of insulating square tubes (101) fixedly mounted on the side wall of the top seat (3), each of the insulating square tubes (101) being mounted with a main electromagnetic push rod (102) and a secondary electromagnetic push rod (103), and the telescopic ends of the main electromagnetic push rod (102) and the secondary electromagnetic push rod (103) being mounted with a non-magnetic movable block (104), a light-emitting lamp (105) being fixedly mounted on the side wall of the non-magnetic movable block (104) connected to the main electromagnetic push rod (102), and a photoelectric switch (106) being fixedly mounted on the side wall of the non-magnetic movable block (104) connected to the secondary electromagnetic push rod (103), The light-emitting surface of the light-emitting lamp (105) and the light-sensitive surface of the photoelectric switch (106) are arranged opposite to each other, each detection probe of the gas detection assembly (9) is electrically connected to the corresponding main electromagnetic push rod (102) and the auxiliary electromagnetic push rod (103) through the control cabinet (11), and the light-emitting lamp (105) and the photoelectric switch (106) are electrically connected to the control cabinet (11), each of the non-magnetic movable blocks (104) is installed with a magnetic attraction fixing mechanism (22) together with the insulating square tube (101) on the same side, and the threshold value refers to the change in the amount of air pollutants that causes the photoelectric switch (106) to be higher or lower than the height of the corresponding light-emitting lamp (105) by 3 cm; The trigger alarm unit (12) comprises an insulating disc (121) fixedly sleeved on the outer wall of the support column (2); a plurality of exhaust passages (122) are provided on the side wall of the insulating disc (121); and an electric heating block (123) and a temperature switch (124) are fixedly installed inside each exhaust passage (122); and a heat-sensing surface of the temperature switch (124) is arranged opposite to a heating surface of the electric heating block (123); and a first normally open solenoid valve (125) is installed inside each exhaust passage (122); the control cabinet (11) controls the operation of the electric heating block (123) according to an off electrical signal of the photoelectric switch (106); and the temperature switch (124) and the first normally open solenoid valve (125) are both electrically connected to the control cabinet (11).

2. An atmospheric treatment sampling device according to claim 1, characterized in that: The ventilation assembly (5) comprises a partition (51) fixedly mounted inside the ventilation box (4), and a ventilation hole (52) is provided on a side wall of the partition (51); a fan (53) is installed inside the ventilation box (4) at a position on the side of the partition (51) away from the mounting cover (7); a plurality of air holes (54) are provided on the side wall of the ventilation box (4) on the suction end side and the exhaust end side of the fan (53); a plurality of isolation sleeves (55) are fixedly mounted on the inner bottom of the ventilation box (4), and the top of each isolation sleeve (55) is abutted against the bottom of the mounting cover (7); each detection probe of the gas detection assembly (9) is located inside a corresponding isolation sleeve (55), and two opposite side walls of the isolation sleeve (55) are provided with a connecting hole (56); and the fan (53) is electrically connected to the control cabinet (11).

3. The air treatment sampling device according to claim 1, characterized in that: The air supply mechanism (13) comprises an installation cavity (133) opened inside the top seat (3), and an air pump (131) is installed inside the installation cavity (133); a ventilation slot (132) is opened at the top center of the support column (2), and the air outlet end of the air pump (131) is connected to the ventilation slot (132); the air inlet end of each of the exhaust channels (122) is connected to the ventilation slot (132); the air suction end of the air pump (131) passes through the cavity wall of the installation cavity (133) and extends to the outside of the top seat (3); and the air pump (131) is electrically connected to the control cabinet (11).

4. An atmospheric treatment sampling device according to claim 3, characterized in that: The sample storage unit (14) comprises a plurality of storage cavities (141) provided inside the annular base (1), and a glass container (142) is fixedly installed inside each storage cavity (141), a sample storage hole (143) is provided at the bottom of the glass container (142) and the side wall of the ventilation slot (132), and a first normally closed solenoid valve (144) is installed inside each sample storage hole (143), a second normally closed solenoid valve (145) is fixedly installed inside the ventilation slot (132) at a position below the insulating disc (121), and the first normally closed solenoid valve (144) and the second normally closed solenoid valve (145) are both electrically connected to the control cabinet (11), and a sampling mechanism (15) is installed inside each glass container (142).

5. The air treatment sampling device according to claim 1, characterized in that: A humidity detector (16) is fixedly mounted on the side wall of the top seat (3); a hollow ring (17) is fixedly sleeved on the outer wall of the insulating disc (121), and each exhaust passage (122) is connected to the interior of the hollow ring (17); an exhaust pipe (18) and a heating pipe (19) are fixedly plugged into the side wall of the hollow ring (17); a second normally open solenoid valve (20) is installed inside the exhaust pipe (18); a third normally closed solenoid valve (21) is installed inside the heating pipe (19); the control cabinet (11) controls the operation of each electric heating block (123), the second normally open solenoid valve (20) and the third normally closed solenoid valve (21) according to the electrical signal output by the humidity detector (16); and the air outlet end of the heating pipe (19) is connected to the interior of the ventilation box (4).

6. The air treatment sampling device according to claim 4, characterized in that: Each of the sampling mechanisms (15) comprises a piston (151) slidably arranged inside the glass container (142), and a sampling tube (152) is fixedly inserted into the end surface of the piston (151), a fourth normally closed solenoid valve (153) is fixedly installed on the lower side of the interior of the sampling tube (152), a sealing cover (154) is threadedly connected to the sampling end of the sampling tube (152), an air exchange hole (155) is opened on the hole wall of the sample storage hole (143), and a fifth normally closed solenoid valve (156) is installed inside the air exchange hole (155), the fourth normally closed solenoid valve (153) and the fifth normally closed solenoid valve (156) are both electrically connected to the control cabinet (11), and a support spring (157) is fixedly provided between the piston (151) and the inner top of the glass container (142).

7. The air treatment sampling device according to claim 1, characterized in that: Each of the magnetic attraction fixing mechanisms (22) comprises an electromagnetic block (221) arranged on one side of the non-magnetic movable block (104), and the electromagnetic block (221) and the non-magnetic movable block (104) are jointly equipped with an elastic telescopic component (222), an iron bar (223) corresponding to the position of the electromagnetic block (221) is fixedly installed on the inner wall of the insulating square cylinder (101), and the electromagnetic block (221) is electrically connected to the control cabinet (11).

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