CN118376461B - Industrial park intelligent air sampling equipment based on control of Internet of things - Google Patents

Abstract

The invention discloses industrial park intelligent air sampling equipment based on Internet of things control, which comprises a bottom plate, wherein a placing table is rotatably arranged above the bottom plate, a sampling instrument is arranged above the placing table, and the industrial park intelligent air sampling equipment further comprises: the bottom plate, its bottom screw thread through connection has the base, and the outside rotation of base installs three swinging arms that are the slope shape, and the bottom plate, its bottom welding installs the threaded rod. This industrial park intelligent air sampling equipment based on thing networking control is provided with the second and rotates the gear, utilizes to open a groove in the inside of bottom plate and rotates and install the second and rotate the gear, then has to place the platform at the output through connection of second rotation gear, can drive the sampling instrument of placing platform top centre gripping installation and rotate when the second rotates the gear pivoted, and the sampling instrument will drive the sampling head and carry out 360 rotation monitoring this moment to can improve the sampling scope of sampling instrument, avoid appearing monitoring inhomogeneous phenomenon, thereby can improve the sampling efficiency of sampling instrument.

Description

Industrial park intelligent air sampling equipment based on control of Internet of things

Technical Field

The invention relates to the technical field of intelligent air sampling equipment, in particular to industrial park intelligent air sampling equipment based on control of the Internet of things.

Background

The control of the internet of things is to realize the identification and control of objects by using sensing technology (such as a temperature sensor, a position sensor and the like) and communication technology (including wireless communication technology, wired communication technology and the like), computer and network technology and the like, and the control is divided into technical components (sensing technology, communication technology, computer and network technology), core principles (real-time data acquisition, real-time control decision and real-time control output) and application fields (intelligent home, intelligent city, industrial internet of things, medical health and agricultural internet of things), and the intelligent air sampling equipment of an industrial park also belongs to the control range of the internet of things;

The industrial park is a country or regional government which divides a region by administrative means according to the internal requirement of self economic development, gathers various production elements, carries out scientific integration in a certain space range, improves the intensive strength of industrialization, the method has the advantages of highlighting industrial characteristics and optimizing functional layout, so that the method becomes a modern industrial division industrial collaborative production area suitable for market competition and industrial upgrading, and the arrangement of an industrial park is generally used for promoting industrial development, attracting foreign materials, solving employment and the like. Industrial parks are of a wide variety including high and new technology development areas, economic technology development areas, technological parks, etc. The industrial park effectively operates, so that the development of related industries can be promoted, the economical strength of the region is improved, meanwhile, the intelligent air sampling equipment for the industrial park is high-tech environment-friendly monitoring equipment, and the aim of monitoring the air quality in the industrial park in real time and accurately is achieved;

An intelligent air sampling device for an industrial park is a device capable of automatically and continuously monitoring air quality in the industrial park and transmitting data to a data processing center. The device analyzes the components and the concentration of the sample in the air to evaluate the air quality condition in the industrial park, because the intelligent air sampling device has the advantages of high-precision monitoring, real-time monitoring, intelligent processing, remote monitoring and the like, therefore, the method is widely applied to various industrial parks, in particular to industries which relate to chemical industry, pharmacy, electroplating and the like and can generate toxic and harmful gases. By using the equipment, the air pollution problem can be found and treated in time, and the environmental quality and personnel health in an industrial park are ensured;

In the "a sampling equipment for detecting atmospheric pollution" of the disclosure patent CN115561031B, including air intake device, air intake device's surface fixedly connected with trachea No. one and No. two trachea respectively, one end that air intake device was kept away from to trachea No. one and No. two trachea is fixedly connected with sampling box No. one and No. two sampling box respectively, air intake device's bottom fixedly connected with check valve device, check valve device's bottom fixedly connected with sampling device No. one, no. two sampling device of bottom fixedly connected with of sampling device, air intake device includes a casing, no. one through-hole has been seted up on the surface of casing, and No. one through-hole's quantity is two, no. one through-hole's inner wall is fixedly connected with on tracheal surface No. one and No. two respectively. The invention relates to the technical field of atmosphere monitoring. The sampling equipment for detecting the atmospheric pollution achieves the unidirectional effect of sampling the inflow of the atmospheric air and increases the sampling force of particles in the atmospheric air;

In the "environmental air particulate matter comprehensive sampling equipment" of publication patent CN117990450a, including main part, granule collecting equipment, gas collecting equipment and base, the air flow channel has been seted up to the upper surface of main part, granule collecting equipment includes the frame of pegging graft with the air flow channel, the porous filter core of inner wall fixedly connected with of frame, the draw-out groove has all been seted up to the front and the reverse side of frame, the inner wall of draw-out groove is provided with the anti-skidding line, the bottom inner wall grafting of air flow channel has the installing frame, the inner wall fixedly connected with air exhauster of installing frame, the inner wall fixedly connected with connecting plate of installing frame. According to the invention, the air is extracted by the air extractor through the particle collecting device above the main body, and is discharged from the lower part of the mounting frame, particles in the air are intercepted by the porous filter element, a large amount of air passes through the porous filter element, the particles are more collected, the types of the particles are more comprehensively collected, and the particles in the air are comprehensively collected without containing a large amount of air;

In the 'sampling equipment based on industrial Internet' disclosed in the patent CN114608875A, the sampling equipment comprises a sampling box, wherein a storage groove is formed in the sampling box, a bottom sealing mechanism and a top sealing mechanism are respectively arranged in the sampling box, a displacement groove is formed in the top of the sampling box, a sliding plate is connected in a sliding manner in the displacement groove, an electric hydraulic rod is fixedly arranged at the bottom of the sliding plate, and a rubber plug is fixedly arranged at the telescopic end of the electric hydraulic rod.

However, when the intelligent air sampling device in the industrial park samples and monitors air, most of traditional air sampling devices are installed in a certain fixed area when in use, and then specific sampling and use are carried out on a certain position, but the area cannot be comprehensively sampled and monitored, so that the air sampling device is low in sampling efficiency, and the stable sampling and use of the air sampling device in later period are inconvenient;

So we propose an industrial park intelligent air sampling device based on internet of things control to solve the problems set forth above.

Disclosure of Invention

The invention aims to provide industrial park intelligent air sampling equipment based on control of the Internet of things, which aims to solve the problems that in the current market provided by the background technology, most of traditional air sampling equipment is installed in a certain fixed area when in use, then specific sampling is carried out on a certain position, but the area cannot be comprehensively sampled and monitored, so that the sampling efficiency of the air sampling equipment is low, and the stable sampling and use of the later-stage air sampling equipment are inconvenient.

In order to achieve the above purpose, the present invention provides the following technical solutions: an intelligent air sampling device for an industrial park based on control of the Internet of things comprises a bottom plate, wherein a placing table is rotatably arranged above the bottom plate, a sampling instrument is arranged above the placing table, and the diameter of the placing table is smaller than that of the bottom plate;

Further comprises: the bottom plate is connected with a base in a threaded penetrating manner, three swinging rods in an inclined shape are rotatably arranged on the outer side of the base, a threaded rod is welded and arranged at the bottom of the bottom plate, a swivel is connected with the outer end of the swivel in a threaded penetrating manner, three connecting rods are connected with the outer ends of the swivel through movable shafts, meanwhile, the swinging rods are connected with the outer ends of the three connecting rods through movable shafts, support rods are arranged at the two ends of the bottom plate through screws, the two support rods are symmetrically arranged relative to the vertical central line of the bottom plate, the top ends of the two support rods are connected with protection plates, and the bottoms of the protection plates correspond to sampling instruments;

Place the platform, the equal fluting of its top both sides runs through slidable mounting has the gag lever post, and two gag lever posts all are the shape of falling "L", and the inner of two gag lever posts runs through and extends to the bottom both ends of sampling instrument, the bottom plate, driving motor is installed to its bottom left side screw, and driving motor's output runs through and extends to the inside of the left side of bottom plate, and driving motor's output is connected with first drive gear, first drive gear is installed in the inside of the left side of bottom plate in the rotation simultaneously.

Preferably, the second rotation gear is rotatably installed in the bottom plate, the output end of the second rotation gear is connected with the placing table in a penetrating manner, the second transmission gear is connected with the outer side of the second rotation gear in a meshed manner, the placing table is provided with the second transmission gear in a rotatable manner, the first transmission gear is connected with the outer side of the second transmission gear in a meshed manner, the first transmission gear and the second transmission gear are identical in diameter, the first transmission gear is driven by the driving motor to be in meshed connection with the second transmission gear in the outer side of the first transmission gear to rotate, then the placing tables placed above the two second rotation gears are simultaneously driven by the two second transmission gears to rotate, the sampling heads arranged at the outer ends of the better driving sampling instruments are used for 360-degree rotary sampling monitoring, and the sampling range of the two sampling instruments is enlarged.

Preferably, the guard plate, the equal fluting in its inside both ends runs through slidable mounting has the extension board, and two extension boards constitute circular shape with the guard plate, and the both sides of guard plate all have the extension board through sealing strip sealing connection, the guard plate, the stopper is installed through reset spring rotation to its inside both ends, and the equal circular arc shape of two stoppers, and the outside of two stoppers has connected gradually one row of spacing groove, two rows of spacing grooves all are equidistant the seting up in the outside of two extension boards simultaneously, can pop up two stoppers in proper order to two rows of spacing grooves through the elasticity of two reset springs self, then just can slide spacing to two extension boards that the pulling extends the removal, avoid the later stage because external unstable factor influences the stable sampling use of sampling appearance, the life of sampling appearance has been improved.

Preferably, the inside of two stopper all flutings are provided with first torsion spring, and the inboard of two first torsion springs is all twined and is connected with the bull stick to the outer end of two bull sticks all runs through and extends to the top both sides of guard plate, can conveniently carry out elastic reset to the position of two back bull sticks of rotating through the elasticity of two first torsion springs self, in order to make things convenient for the repetitive operation in later stage to use.

Preferably, place the platform, its inside fluting runs through slidable mounting has and places the board, and place the top of board and placed the sampling instrument, and the bottom both sides of board all are connected with first rotation gear through rack engagement, place the platform, its inside both ends are all slotted and are installed first rotation gear through the rotation of second torsion spring, and two first rotation gears are about placing the vertical central line symmetry setting of platform, can conveniently rotate two first rotation gears through two second torsion spring self elasticity and reset, thereby can drive and place the board and reset and rise and remove, better convenience carries out quick assembly disassembly to the sampling instrument and changes operation use.

Preferably, the output ends of the two first rotating gears are all wound and connected with pull ropes, the outer ends of the two pull ropes are all connected with limiting rods through guide wheels, the placing table is provided with pull springs in a slotted mode on two sides above the placing table, the outer ends of the two pull springs are all connected with limiting rods, and elastic reset can be conveniently carried out on the positions of the two movable rear limiting rods through the elastic force of the two pull springs.

Compared with the prior art, the invention has the beneficial effects that:

(1) The second rotating gear is arranged, the second rotating gear is rotatably arranged in the bottom plate through a groove, then the output end of the second rotating gear is connected with the placing table in a penetrating way, the sampling instrument which is clamped and arranged above the placing table can be driven to rotate while the second rotating gear rotates, at the moment, the sampling instrument can drive the sampling head to conduct 360-degree rotation monitoring, so that the sampling range of the sampling instrument can be increased, the phenomenon of non-uniform monitoring is avoided, and the sampling efficiency of the sampling instrument can be improved;

(2) Further, a driving motor is arranged on the left side screw of the bottom plate, then a first transmission gear is connected to the output end of the driving motor, a second transmission gear is connected to the outer side of the first transmission gear in a meshed mode, the driving motor is started to rotate, meanwhile, the second transmission gear connected to the outer side of the first transmission gear in a meshed mode can be driven to rotate, then the second transmission gear can simultaneously drive the second rotation gear to rotate, so that the placing table can be conveniently driven to rotate, and the practicability is better;

(3) The protection plates are arranged, the support rods are arranged at the two ends of the bottom plate, then the protection plates are connected to the top ends of the two support rods, the sampling instrument used for sampling can be subjected to stable use of the sampling instrument due to the influence of wind, rain, snow and other unstable factors through the protection plates, and the protection range of the protection plates can be enlarged by pulling the two extension plates to extend outwards so as to prolong the service life of the sampling instrument;

(4) Furthermore, the limiting blocks which are in the shape of circular arcs are rotatably arranged at the two ends of the inner part of the protection plate through the reset springs, then the outer sides of the two limiting blocks are sequentially connected with a row of limiting grooves, so that when the extension plate is pulled to extend and move, the two limiting blocks are sequentially ejected into the two rows of limiting grooves through the self elasticity of the two reset springs, then the two extension plates which extend and move can be subjected to sliding limiting, the phenomenon that the positions of the two extension plates are offset after moving in the later period when the sampling instrument is protected is avoided, and the sampling stability of the sampling instrument is improved;

(5) Be provided with the gag lever post, utilize to run through slidable mounting at the inside of placing the platform and place the board, then be connected with two first rotation gears through rack engagement in the bottom both sides of placing the board, can place the board through its own gravity drive after the sampling instrument is placed in the top of placing the board and carry out the position decline, will drive two first rotation gears through two racks at this moment and rotate, because the output of two first rotation gears is connected with the gag lever post through the stay cord, can pull two gag lever posts simultaneously and shrink and remove when placing the board decline, at this moment just can remove two gag lever posts simultaneously and extend to the bottom both sides of sampling instrument, then just can carry out automatic centre gripping location to the sampling instrument after placing, operation labour saving and time saving more.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of a top-down view of a fender and extension plate according to the invention;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;

FIG. 4 is a schematic perspective view of the guard plate and extension plate of the present invention;

FIG. 5 is a schematic diagram of the main sectional structure of the placement table and the sampling instrument of the present invention;

FIG. 6 is a schematic diagram of a main sectional structure of the placement stage and the sampling instrument after movement;

FIG. 7 is a schematic view of a partial main sectional structure of a placement table and a placement plate according to the present invention;

FIG. 8 is a schematic view of the floor and placement table of the present invention in a top-down view;

FIG. 9 is a schematic view of a partial perspective view of a base plate according to the present invention;

FIG. 10 is a schematic view of a partial perspective view of the base plate and the placement table of the present invention.

In the figure: 1. a bottom plate; 2. a placement table; 3. a sampling instrument; 4. a support rod; 5. a protection plate; 6. an extension plate; 7. a driving motor; 8. a base; 9. a threaded rod; 10. a connecting rod; 11. a swinging rod; 12. a sealing tape; 13. a first torsion spring; 14. a limiting block; 15. a limit groove; 16. a return spring; 17. a rotating rod; 18. placing a plate; 19. a limit rod; 20. a tension spring; 21. a first rotating gear; 22. a pull rope; 23. a rack; 24. a second torsion spring; 25. a first transmission gear; 26. a second transmission gear; 27. a second rotating gear; 28. a sampling head.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention provides the following technical scheme:

embodiment one, in order to solve the problem that the sampling monitoring range of the existing sampling instrument 3 cannot be improved, which results in lower sampling efficiency of the sampling instrument 3, discloses:

A bottom plate 1, a placing table 2 is rotatably arranged above the bottom plate, a sampling instrument 3 is arranged above the placing table 2, the diameter of the placing table 2 is smaller than that of the bottom plate 1, and a sampling head 28 is arranged at the outer end of the sampling instrument 3;

Further comprises: the bottom plate 1, the bottom screw thread of which is connected with the base 8 in a penetrating way, three swinging rods 11 which are in an inclined shape are rotatably arranged on the outer side of the base 8, the bottom plate 1 is welded and provided with a threaded rod 9, the outer side screw thread of the threaded rod 9 is connected with a swivel in a penetrating way, the outer end of the swivel is connected with three connecting rods 10 through a movable shaft, the outer ends of the three connecting rods 10 are connected with the swinging rods 11 through the movable shaft, the two ends of the bottom plate 1 are respectively provided with a supporting rod 4 through screws, the two supporting rods 4 are symmetrically arranged about the vertical central line of the bottom plate 1, the top ends of the two supporting rods 4 are connected with a protection plate 5, and the bottom of the protection plate 5 is correspondingly provided with a sampling instrument 3;

Place platform 2, the equal fluting of its top both sides runs through slidable mounting has gag lever post 19, and two gag lever posts 19 all are the shape of falling "L", and the inner of two gag lever posts 19 runs through and extends to the bottom both ends of sampling instrument 3, bottom plate 1, driving motor 7 is installed to its bottom left side screw, and driving motor 7's output runs through and extends to the inside of the left side of bottom plate 1, and driving motor 7's output is connected with first drive gear 25, first drive gear 25 is installed in the inside of the left side of bottom plate 1 in the rotation simultaneously.

The bottom plate 1, its inside fluting is rotated and is installed second rotation gear 27, and the output through connection of second rotation gear 27 has to place platform 2, and the outside meshing of second rotation gear 27 is connected with second drive gear 26, places platform 2, and its inside fluting in left side is rotated and is installed second drive gear 26, and the outside meshing of second drive gear 26 is connected with first drive gear 25, and the diameter of first drive gear 25 and second drive gear 26 is the same.

As shown in fig. 1-10, when the sampling instrument 3 samples and monitors the air in the industrial park, the driving motor 7 is started to drive the first transmission gear 25 to rotate, then the first transmission gear 25 drives the second transmission gear 26 which is in meshed connection with the outside of the first transmission gear 25 to rotate, then the second transmission gear 26 simultaneously drives the second rotation gear 27 to rotate, at this time, the sampling instrument 3 which is clamped and positioned by the placing table 2 can be driven to rotate, then the sampling instrument 3 drives the sampling head 28 to perform 360-degree rotation monitoring, the monitoring range of the sampling instrument 3 is improved, the phenomenon of non-uniformity in monitoring is avoided, and the sampling efficiency of the sampling instrument 3 can be improved.

In the second embodiment, unlike in the first embodiment, the protection plate 5 is used to protect the sampling device 3 for sampling, so as to avoid the phenomenon that the service life of the sampling device 3 is affected by external instability factors, and the method is disclosed:

Guard plate 5, its inside both ends are all grooved and are run through slidable mounting has extension board 6, and two extension boards 6 constitute circular shape with guard plate 5, and the both sides of guard plate 5 all have extension board 6 through sealing strip 12 sealing connection, guard plate 5, stopper 14 is installed through reset spring 16 rotation to its inside both ends are all grooved, and the all circular arc shape of two stoppers 14, and the outside of two stoppers 14 has connected gradually one row of spacing groove 15, two rows of spacing groove 15 are equidistant the outside of seting up at two extension boards 6 simultaneously.

The inside of two stopper 14 all flutedly is provided with first torsion spring 13, and the inboard of two first torsion springs 13 all twines and is connected with bull stick 17 to the outer end of two bull sticks 17 all runs through and extends to the top both sides of guard plate 5.

As shown in fig. 1-4, when the sampler 3 is used in rainy, snowy and windy weather, the extension plates 6 are pulled to extend outwards, at this time, the two limiting blocks 14 are sequentially ejected into the two rows of limiting grooves 15 by the two return springs 16 through the self elasticity, then the two extension plates 6 which extend and move can be limited in a sliding manner, the phenomenon that the two extension plates 6 are offset due to unstable factors such as external heavy, rainy, snowy and windy weather in the later period is avoided, and the service life of the sampler 3 is prolonged;

When two extension boards 6 need to be contracted and reset, the extension boards 6 which extend and move can be reset and moved only by manually rotating the rotating rod 17 to drive the limiting block 14 to be separated from the limiting groove 15, and finally the elastic force of the two first torsion springs 13 can be utilized to elastically reset the rotating rods 17 after two rotations, so that the later repeated operation and use are facilitated, and the protection stability of the protection board 5 is improved.

Embodiment three, unlike embodiment two, can carry out automatic centre gripping location to sampling instrument 3, avoid loaded down with trivial details steps such as manual operation, disclose:

The placing table 2 is internally provided with a placing plate 18 in a penetrating sliding manner, the sampling instrument 3 is placed above the placing plate 18, the two sides of the bottom of the placing plate 18 are connected with first rotating gears 21 in a meshed manner through racks 23, the placing table 2 is internally provided with first rotating gears 21 in a rotating manner through second torsion springs 24 at two ends, and the two first rotating gears 21 are symmetrically arranged about the vertical center line of the placing table 2.

The output ends of the two first rotating gears 21 are respectively wound and connected with a pull rope 22, the outer ends of the two pull ropes 22 are respectively connected with a limiting rod 19 through guide wheels, the placing table 2 is provided with pull springs 20 in a slotted mode on two sides above the placing table, and the outer ends of the two pull springs 20 are respectively connected with a limiting rod 19.

As shown in fig. 1-7, after the sampling device 3 is placed on the placement plate 18, the placement plate 18 is driven to descend by its own weight, at this time, the racks 23 disposed on two sides of the bottom of the placement plate 18 drive the two first rotating gears 21 to rotate at the same time, then the pull ropes 22 connected by winding the output ends of the two first rotating gears 21 pull the two limiting rods 19 to shrink through the guide wheels at the same time, and then the two limiting rods 19 can be automatically moved to two ends of the bottom of the sampling device 3, so that the sampling device 3 can be automatically clamped and positioned.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (4)

1. The intelligent air sampling equipment for the industrial park based on the control of the Internet of things comprises a bottom plate (1), wherein a placing table (2) is rotatably arranged above the bottom plate, a sampling instrument (3) is arranged above the placing table (2), the diameter of the placing table (2) is smaller than that of the bottom plate (1), and a sampling head (28) is arranged at the outer end of the sampling instrument (3);

Characterized by further comprising:

The bottom plate (1) is connected with the base (8) in a threaded penetrating manner, three swinging rods (11) in an inclined shape are rotatably arranged on the outer side of the base (8), the bottom of the bottom plate (1) is welded with the threaded rod (9), the outer side of the threaded rod (9) is connected with the swivel in a threaded penetrating manner, the outer end of the swivel is connected with three connecting rods (10) through the movable shaft, and meanwhile, the outer ends of the three connecting rods (10) are connected with the swinging rods (11) through the movable shaft;

The two ends of the bottom plate (1) are provided with supporting rods (4) through screws, the two supporting rods (4) are symmetrically arranged about the vertical central line of the bottom plate (1), the top ends of the two supporting rods (4) are connected with a protection plate (5), and the bottom of the protection plate (5) corresponds to a sampling instrument (3);

the two sides of the upper part of the placing table (2) are provided with grooves which penetrate through and are slidably provided with limiting rods (19), the two limiting rods (19) are in an inverted L shape, and the inner ends of the two limiting rods (19) penetrate through and extend to the two ends of the bottom of the sampling instrument (3);

The bottom left side screw of the bottom plate (1) is provided with a driving motor (7), the output end of the driving motor (7) extends to the left side inside of the bottom plate (1) in a penetrating way, the output end of the driving motor (7) is connected with a first transmission gear (25), and meanwhile the first transmission gear (25) is rotatably arranged in the left side inside of the bottom plate (1);

The bottom plate (1) is internally provided with a second rotary gear (27) in a slotting and rotating way, the output end of the second rotary gear (27) is connected with a placing table (2) in a penetrating way, and the outer side of the second rotary gear (27) is connected with a second transmission gear (26) in a meshing way;

the placing table (2) is provided with a second transmission gear (26) in a slotted and rotary way at the left side, the outer side of the second transmission gear (26) is connected with a first transmission gear (25) in a meshed way, and the diameters of the first transmission gear (25) and the second transmission gear (26) are the same;

The placing table (2) is internally provided with a placing plate (18) in a penetrating and sliding manner, a sampling instrument (3) is placed above the placing plate (18), and two sides of the bottom of the placing plate (18) are connected with a first rotating gear (21) in a meshed manner through racks (23);

The two ends of the inner part of the placing table (2) are grooved, a first rotating gear (21) is rotatably arranged through a second torsion spring (24), and the two first rotating gears (21) are symmetrically arranged about the vertical central line of the placing table (2);

The output ends of the two first rotating gears (21) are respectively wound and connected with a pull rope (22), the outer ends of the two pull ropes (22) are respectively connected with a limiting rod (19) through guide wheels, the placing table (2) is provided with pull springs (20) in a slotted mode on two sides above the placing table, and the outer ends of the two pull springs (20) are respectively connected with a limiting rod (19).

2. The industrial park intelligent air sampling device based on internet of things control of claim 1, wherein: the guard plate (5), its inside both ends are all slotted runs through slidable mounting and are had extension board (6), and two extension board (6) constitute circular shape with guard plate (5) to the both sides of guard plate (5) are all through sealing strip (12) sealing connection extension board (6).

3. The industrial park intelligent air sampling device based on internet of things control of claim 2, wherein: the guard plate (5), its inside both ends are all slotted and are installed stopper (14) through reset spring (16) rotation, and all are circular arc shape of two stoppers (14) to the outside of two stoppers (14) has connected gradually one row of spacing groove (15), and two rows of spacing grooves (15) are equidistant the seting up in the outside of two extension boards (6) simultaneously.

4. The industrial park intelligent air sampling device based on internet of things control of claim 3, wherein: the inside of two stopper (14) is all grooved and is provided with first torsion spring (13), and the inboard of two torsion springs (13) is all twined and is connected with bull stick (17) to the outer end of two bull sticks (17) all runs through and extends to the top both sides of guard plate (5).