CN113532960A - Automatic sampling monitoring system for atmospheric particulate matters - Google Patents
Automatic sampling monitoring system for atmospheric particulate matters Download PDFInfo
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- CN113532960A CN113532960A CN202110954148.9A CN202110954148A CN113532960A CN 113532960 A CN113532960 A CN 113532960A CN 202110954148 A CN202110954148 A CN 202110954148A CN 113532960 A CN113532960 A CN 113532960A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
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Abstract
The invention relates to the technical field of sampling equipment, in particular to an automatic sampling and monitoring system for atmospheric particulates, which comprises: the sampling pipe mechanism, the filter box mechanism, the fan mechanism and the mounting platform; the sampling pipe mechanism comprises an outer pipe body, an inner pipe body and a sampling port adjusting component; the side surface of the outer tube body is provided with a plurality of sampling ports for air intake, and the top end of the inner tube body sliding in the outer tube body is provided with a plurality of vent holes for ventilation; the filter box mechanism is fixed on the mounting table, and two ends of the filter box mechanism are respectively connected with the bottom end of the inner pipe body and the fan mechanism; one end of the sampling port size assembly is connected to the outer pipe body, and the other end of the sampling port size assembly is connected to the filter box mechanism so as to drive the outer pipe body and the inner pipe body to slide relatively and adjust the position of the inner pipe body plugged at the sampling port of the outer pipe body. The sampling port can be adjusted to be closed, so that particles in the atmosphere can be prevented from entering the interior of the sampling device through the sampling port when the sampling device is not used, and the detection precision of a subsequent sampling sample can be ensured.
Description
Technical Field
The invention relates to the technical field of sampling equipment, in particular to an automatic sampling and monitoring system for atmospheric particulates.
Background
The quality of the atmospheric environment has an important influence on the life and production of people, and the specific embodiment is that on one hand, the serious air pollution can cause the concentration of particulate matters in the air to be increased, and further the health of people is threatened. On the other hand, in the fields of precision machinery, biomedicine and the like, a dust-free environment is often required to be created, and if the amount of particles in the air is large, the product quality is seriously affected. In order to detect the concentration of airborne particles, the airborne particles need to be sampled and analyzed by a special sampling device. The sampling port of the existing atmospheric particulate sampling equipment is fixed in size, cannot be closed when not used, and is easy to enter dust or other impurities, so that the sampling accuracy and the detection precision of subsequent samples are influenced during subsequent use.
Disclosure of Invention
The invention aims to provide an automatic sampling and monitoring system for atmospheric particulates, which can effectively solve the problems in the prior art.
The purpose of the invention is realized by the following technical scheme:
an automatic sampling monitoring system for atmospheric particulates, comprising: the sampling pipe mechanism, the filter box mechanism, the fan mechanism and the mounting platform; the sampling pipe mechanism comprises an outer pipe body, an inner pipe body and a sampling port adjusting component; the side surface of the outer tube body is provided with a plurality of sampling ports for air intake, and the top end of the inner tube body sliding in the outer tube body is provided with a plurality of vent holes for ventilation; the filter box mechanism is fixed on the mounting table, and two ends of the filter box mechanism are respectively connected with the bottom end of the inner pipe body and the fan mechanism; one end of the sampling port size assembly is connected to the outer pipe body, and the other end of the sampling port size assembly is connected to the filter box mechanism so as to drive the outer pipe body and the inner pipe body to slide relatively and adjust the position of the inner pipe body plugged at the sampling port of the outer pipe body.
Preferably, the sampling port adjusting assembly comprises an adjusting screw rod provided with a screwing head and a linkage frame plate connected with the outer pipe body; the adjusting screw rod rotates on the filter box mechanism, and the adjusting screw rod drives the linkage frame plate in a threaded mode so as to drive the outer pipe body to slide on the inner pipe body through the linkage frame plate.
Preferably, the top of the outer pipe body is provided with a detachable top cover, and a tensioning assembly is arranged between the detachable top cover and the inner pipe body, so that the outer pipe body and the inner pipe body which are adjusted in position relatively are tensioned and limited through the tensioning assembly.
Preferably, the tensioning assembly comprises a guide vertical shaft, a tensioning spring sleeved on the guide vertical shaft and a spring seat fixed at one end of the guide vertical shaft; one end of the guide vertical shaft is detachably connected to the detachable top cover, and the middle part of the guide vertical shaft slides on the top surface of the inner pipe body; the spring seat is located the inner tube body, and the tension spring is located between the spring seat and the top surface of inner tube body.
Preferably, the automatic sampling and monitoring system for atmospheric particulates further comprises a rotary driving mechanism; the rotary driving mechanism comprises a servo motor arranged on the filter box mechanism, a driving friction wheel fixed on an output shaft of the servo motor, a linkage shaft rotating on the linkage frame plate, a driven friction wheel fixed at one end of the linkage shaft, a driving bevel gear fixed at the other end of the linkage shaft and a driven bevel gear meshed with the driving bevel gear and fixed on the outer pipe body; the driving friction wheel is vertically in friction transmission with the driven friction wheel and is positioned above the linkage shaft; the axis of the linkage shaft is vertical to the axis of the adjusting screw rod.
Preferably, a rain cover is fixed on the top of the outer pipe body.
Preferably, rain-proof cover bottom evenly encircles a plurality of fixed whirl impellers, and a plurality of whirl impellers encircle to set up in the outside of a plurality of sampling openings.
Preferably, the rotational flow impeller comprises a hanging bracket, an inner impeller, an outer impeller, a limit stop and an extension spring; the inner impeller is fixed at the bottom of the rain cover through a hanger; the inner end of the outer impeller is in sliding fit with the inner and outer chutes of the inner impeller, the outer impeller is provided with a limit stop, and the limit stop is in sliding fit with the limit slideway of the inner impeller; the inner side of the outer impeller is connected with the outer ends of a plurality of extension springs, and the inner ends of the extension springs are connected to the inner side of the inner sliding groove and the outer sliding groove of the inner impeller.
Preferably, the swirl impeller further comprises a counterweight rod; the outer side of each outer impeller is in threaded fit with a balance weight rod.
Preferably, the filter box mechanism comprises a square box body, a filter membrane frame, a filter membrane, a side stop block, a sliding stop block, an unlocking slide block and a compression spring; the two ends of the square box body are respectively connected and communicated with the inner tube body and the fan mechanism, the middle part of the filter membrane frame slides in a horizontal slide way of the square box body in a sealing manner, a filter membrane is arranged in the middle of the filter membrane frame, the filter membrane is positioned in the square box body, one end of the filter membrane frame is fixed with a side stop block, the side stop block is blocked on one side face of the square box body in a blocking manner, the other end of the filter membrane frame is provided with a slider groove, the inner end of the slide stop block slides in the slider groove, the outer end of the slide stop block is blocked on the other side face of the square box body in a blocking manner, and a compression spring is arranged between the slide stop block and the inner side face of the slider groove; the sliding block is provided with an unlocking slide block which slides in the side sliding channel of the filter membrane frame.
Preferably, the fan mechanism comprises an air inlet cover, an air pipe, a flow meter and a blower; one end of the air inlet cover is connected and communicated with the square box body, the other end of the air inlet cover is connected and communicated with the air blower through an air pipe, and a flowmeter is arranged on the air pipe.
Preferably, the mounting table comprises an upper mounting base, a support column and a counterweight base; the square box body is installed on the upper connecting base, four corners of the upper connecting base are connected with the counterweight base through four supporting columns, and a storage battery is arranged in the counterweight base to provide power for the air blower and the servo motor.
Preferably, the support column is removable to be electric telescopic handle, and electric telescopic handle's expansion end and stiff end are connected with the last seat and the counter weight base of connecing respectively to adjust the level of the last seat of connecing, thereby adjust the level of sampling, in order to sample in different altitude positions.
The invention has the beneficial effects that: according to the automatic sampling and monitoring system for the atmospheric particulate matters, when the automatic sampling and monitoring system is not used, the sampling port can be closed by adjusting the position of the inner pipe body plugged at the sampling port of the outer pipe body through the sampling port adjusting assembly, so that the particulate matters in the atmosphere are prevented from entering the automatic sampling and monitoring system through the sampling port when the automatic sampling and monitoring system is not used, and the detection precision of a subsequent sampling sample is favorably ensured; when the sampling device is used, the position of the inner pipe body plugged at the sampling port of the outer pipe body can be adjusted through the sampling port adjusting assembly to adjust the size of the sampling port, so that the sampling requirements under different conditions can be met; the rotary driving mechanism is arranged in the device, and can control the outer tube body to rotate during sampling, so that the sampling port of the outer tube body is controlled to collect atmosphere from different directions, the sampling uniformity is improved, and the subsequent monitoring effect is improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a first general schematic diagram provided in accordance with an embodiment of the present invention;
FIG. 2 is a second overall view provided in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the overall structure provided by an embodiment of the present invention;
FIG. 4 is a schematic structural view of a sampling tube mechanism and a rain cover provided in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an outer tube according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an inner tube according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a sampling port adjustment assembly according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a tensioning assembly provided by an embodiment of the present invention;
FIG. 9 is a first schematic structural diagram of a filter box mechanism according to an embodiment of the present invention;
FIG. 10 is a second schematic structural view of a filter box mechanism according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a rotational driving mechanism according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a swirl impeller provided in the embodiment of the present invention.
Icon: a sampling tube mechanism 1; an outer body 101; an inner tube 102; a sample port adjustment assembly 103; an adjusting screw 103 a; a linkage frame plate 103 b; a sampling port 104; a vent hole 105; a removable top cover 106; a tension assembly 107; a guide vertical shaft 107 a; a tension spring 107 b; a spring seat 107 c; a filter box mechanism 2; a square box 201; a filter membrane frame 202; a filter membrane 203; a side stopper 204; a slide stopper 205; an unlocking slide 206; a compression spring 207; a fan mechanism 3; an installation table 4; a rotation drive mechanism 5; a servo motor 501; a driving friction wheel 502; a linkage shaft 503; a driven friction wheel 504; a drive bevel gear 505; a driven bevel gear 506; a rain cover 6; a swirl impeller 7; a hanger 701; an inner impeller 702; an outer impeller 703; a limit stop 704; an extension spring 705; a weight lever 706.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for understanding and reading the contents disclosed in the specification, and are not used for limiting the conditions that the present application can implement, so the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the technical content disclosed in the present application without affecting the efficacy and the achievable purpose of the present application. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present application, and changes or modifications in the relative relationship may be made without substantial technical changes.
The present invention is described in further detail below with reference to figures 1-12.
Example one
As shown in fig. 1-12, an automatic sampling and monitoring system for atmospheric particulates comprises: the sampling pipe mechanism 1, the filter box mechanism 2, the fan mechanism 3 and the mounting table 4; the sampling tube mechanism 1 comprises an outer tube body 101, an inner tube body 102 and a sampling port adjusting component 103; a plurality of sampling ports 104 for air intake are arranged on the side surface of the outer tube body 101, and a plurality of vent holes 105 for ventilation are arranged on the top surface of the inner tube body 102 with the top end sliding in the outer tube body 101; the filter box mechanism 2 is fixed on the mounting table 4, and two ends of the filter box mechanism 2 are respectively connected with the bottom end of the inner pipe body 102 and the fan mechanism 3; one end of the sampling port 104 size component is connected to the outer pipe body 101, and the other end of the sampling port 104 size component is connected to the filter box mechanism 2, so that the outer pipe body 101 and the inner pipe body 102 are driven to slide relatively, and the position of the sampling port 104 of the outer pipe body 101, which is sealed by the inner pipe body 102, is adjusted.
The automatic sampling monitoring system for the atmospheric particulates is used for sampling the atmospheric particulates, the automatic sampling monitoring system is placed in a flat position during sampling, a fan mechanism 3 is electrically started, the fan mechanism 3 can be matched with a filter box mechanism 2 and a sampling pipe mechanism 1 to suck external air into the filter box mechanism 2 and the sampling pipe mechanism 1 after being started, the external air is controlled to enter an outer pipe body 101 through a sampling port 104 on the side surface of the outer pipe body 101, then enter an inner pipe body 102 through a vent hole 105 on the top surface of the inner pipe body 102 and be conveyed to the filter box mechanism 2 through the inner pipe body 102 to filter particulates in the air, subsequent detection processing is facilitated, and the filtered air is discharged through an air outlet of the fan mechanism 3; when the sampling device is not used, the sampling port adjusting assembly 103 can control the inner tube body 102 to be plugged at the position of the sampling port 104 of the outer tube body 101 to close the sampling port, so that particles in the atmosphere are prevented from entering the sampling device through the sampling port when the sampling device is not used, and the detection precision of a subsequent sampling sample is ensured; when the sampling device is used, the sampling port adjusting assembly 103 can be used for adjusting the position of the inner tube body 102 for plugging the sampling port 104 of the outer tube body 101 to adjust the size of the sampling port 104, so that the sampling requirements under different conditions can be met.
Example two
As shown in fig. 1-12, the sample port adjustment assembly 103 includes an adjustment screw 103a having a screw head, and a linkage frame plate 103b connected to the outer tube 101; the adjusting screw 103a rotates on the filter box mechanism 2, and the adjusting screw 103a threadedly drives the linkage frame plate 103b to drive the outer tube 101 to slide on the inner tube 102 through the linkage frame plate 103 b. The sampling port adjusting assembly 103 is used for adjusting the position of the inner tube body 102 for plugging the sampling port 104 of the outer tube body 101, so as to change the size of the opening of the sampling port 104, during adjustment, the rotating screw head drives the adjusting screw 103a to rotate, and when the adjusting screw 103a rotates, the outer tube body 101 can be driven by the linkage frame plate 103b to slide on the inner tube body 102, so as to change the size of the opening of the sampling port 104.
The top of outer body 101 is provided with detachable top cap 106, is equipped with tensioning assembly 107 between detachable top cap 106 and the interior body 102 to carry out the tensioning spacing to outer body 101 and interior body 102 after relative adjustment position through tensioning assembly 107. The detachable top cover 106 is arranged to facilitate the inner pipe 102 to be taken out of the outer pipe 101, and facilitate the replacement or maintenance of the outer pipe 101 and the inner pipe 102; the tensioning assembly 107 is used for tensioning and limiting the outer pipe body 101 and the inner pipe body 102 after the relative positions are adjusted, so that the stability of the invention in use is ensured.
The tensioning assembly 107 comprises a vertical guide shaft 107a, a tensioning spring 107b sleeved on the vertical guide shaft 107a and a spring seat 107c fixed at one end of the vertical guide shaft 107 a; one end of the vertical guide shaft 107a is detachably connected to the detachable top cover 106, and the middle part of the vertical guide shaft 107a slides on the top surface of the inner tube body 102; spring seat 107c is located within inner tube 102 and tension spring 107b is located between spring seat 107c and the top surface of inner tube 102. Under a normal state, the positions of the outer tube 101 and the inner tube 102 are kept stable under the tension force of the tension spring 107 b.
EXAMPLE III
As shown in fig. 1-12, the automatic sampling and monitoring system for atmospheric particulates further includes a rotation driving mechanism 5; the rotary driving mechanism 5 comprises a servo motor 501 arranged on the filter box mechanism 2, a driving friction wheel 502 fixed on an output shaft of the servo motor 501, a linkage shaft 503 rotating on the linkage frame plate 103b, a driven friction wheel 504 fixed at one end of the linkage shaft 503, a driving bevel gear 505 fixed at the other end of the linkage shaft 503, and a driven bevel gear 506 engaged with the driving bevel gear 505 and fixed on the outer pipe body 101; the driving friction wheel 502 vertically frictionally drives the driven friction wheel 504, and the driving friction wheel 502 is positioned above the linkage shaft 503; the axis of the linkage shaft 503 is perpendicular to the axis of the adjusting screw 103 a. The rotary driving mechanism 5 is used for controlling the outer tube body 101 to perform rotary motion during sampling, so that the sampling port 104 of the outer tube body 101 is controlled to collect atmosphere from different directions, the sampling uniformity is improved, and the subsequent monitoring effect is improved; after the servo motor 501 is started, the driving friction wheel 502 can be driven to rotate, the driving friction wheel 502 vertically drives the driven friction wheel 504 to rotate in a friction mode, so that the linkage shaft 503 is controlled to rotate, the linkage shaft 503 rotates to drive the driving bevel gear 505 to rotate, the driving bevel gear 505 drives the outer pipe body 101 to rotate around the axis of the driving bevel gear 505 through meshing with the driven bevel gear 506, the outer pipe body 101 is in sealed movable connection with the inner pipe body 102, and the outer pipe body 101 and the inner pipe body 102 can rotate relatively and can slide relatively; rotary driving mechanism 5 can also adjust the speed that drives outer body 101 pivoted along with the opening size of sample connection 104, when linkage frame plate 103b drives outer body 101 and rises and make the opening grow of sample connection 104, drive friction wheel 502 is close to driven friction wheel 504's center, thereby it makes drive friction wheel 502 rotate the round each time and drive driven friction wheel 504 pivoted number of turns increase to improve outer body 101's rotation speed, otherwise, the opening of sample connection 104 diminishes, then reduce outer body 101's rotation speed, so that the better sampling demand that is applicable to different environment.
Rain-proof cover 6 bottom evenly encircles a plurality of fixed whirl impellers 7, and a plurality of whirl impellers 7 encircle to set up in the outside of a plurality of sampling openings 104. When the outer pipe body 101 rotates, the rain cover 6 can be driven to rotate, and when the rain cover 6 rotates, the plurality of cyclone impellers 7 can be driven to rotate and move in a surrounding manner, so that a cyclone is formed by the plurality of cyclone impellers 7, air nearby the air collecting device can be collected to the air collecting device, the air can be extracted by matching with the fan mechanism 3, and the collecting effect is improved; and when the opening of sampling port 104 became bigger, the faster the rotational speed of outer body 101 was, the faster the speed that rain-proof cover 6 drove a plurality of whirl impellers 7 and carried out rotary motion outside body 101 was to make the whirl inspiratory speed faster, be favorable to improving the sampling speed under the state that fan mechanism 3 did not change the air exhaust speed, can reduce fan mechanism 3's energy consumption to a certain extent.
The swirl impeller 7 comprises a hanging bracket 701, an inner impeller 702, an outer impeller 703, a limit stop 704 and a tension spring 705; the inner impeller 702 is fixed at the bottom of the rain cover 6 through a hanging bracket 701; the inner end of the outer impeller 703 is in sliding fit with the inner and outer sliding grooves of the inner impeller 702, a limit stop 704 is arranged on the outer impeller 703, and the limit stop 704 is in sliding fit with the limit slideway of the inner impeller 702; the inner side of the outer impeller 703 is connected to the outer ends of a plurality of tension springs 705, and the inner ends of the plurality of tension springs 705 are connected to the inner sides of the inner and outer chutes of the inner impeller 702. The hanging bracket 701 in the rotational flow impeller 7 can drive the inner impeller 702, the outer impeller 703, the limit stop 704 and the extension spring 705 to rotate and move around under the driving of the rain cover 6, when the opening of the sampling port 104 is enlarged and the rotating speed is increased, the amplitude of the outer impeller 703 swinging from the inner impeller 702 to the outer side is larger along with the increase of the rotating speed, the larger the integral impeller formed by the inner impeller 702 and the outer impeller 703 is, the larger the rotational flow range is, so that the sampling speed and the sampling range are larger, and the accuracy of sampling detection is favorably improved; when the outer impeller 703 swings inside and outside the inner impeller 702, the plurality of tension springs 705 are stretched, and the greater the rotation speed, the greater the stretching amplitude of the tension springs 705; the limit stop 704 acts as a limit and prevents the inner impeller 702 and the outer impeller 703 from separating.
The swirl impeller 7 further comprises a counterweight rod 706; the outside of each outer impeller 703 is threaded with a weight rod 706. The arrangement of the counterweight rod 706 is convenient for the outer impeller 703 to swing to the outer side in the inner impeller 702 when the rotating speed is high, thereby improving the cyclone air suction effect.
The filter box mechanism 2 comprises a square box body 201, a filter membrane frame 202, a filter membrane 203, a side stop block 204, a sliding stop block 205, an unlocking slide block 206 and a compression spring 207; the two ends of the square box body 201 are respectively connected and communicated with the inner tube body 102 and the fan mechanism 3, the middle part of the filter membrane frame 202 slides in a horizontal slide way of the square box body 201 in a sealing way, a filter membrane 203 is arranged in the middle of the filter membrane frame 202, the filter membrane 203 is positioned in the square box body 201, one end of the filter membrane frame 202 is fixed with a side stop block 204, the side stop block 204 is blocked on one side surface of the square box body 201, the other end of the filter membrane frame 202 is provided with a slider groove, the inner end of the sliding stop block 205 slides in the slider groove, the outer end of the sliding stop block 205 is blocked on the other side surface of the square box body 201, and a compression spring 207 is arranged between the sliding stop block 205 and the inner side surface of the slider groove; the outer side of the sliding block 205 is provided with an inclined plane; the slide block 205 is provided with an unlocking slide block 206, and the unlocking slide block 206 slides in a side slide channel of the filter membrane frame 202. The filter membrane frame 202 in the square box body 201 can be detached, so that the filter membrane 203 can be replaced or particulate matters on the filter membrane 203 can be detected conveniently, when the filter membrane frame 202 needs to be detached, the unlocking slide block 206 is pressed to drive the sliding block 205 to compress the compression spring 207, so that the sliding block 205 releases the blocking of the square box body 201, at the moment, the side block 204 is pulled outwards to drive the filter membrane frame 202 and the filter membrane 203 to move outwards to the square box body 201, but the sliding block 205 is reset to be blocked at the inner side of the square box body 201 under the elastic force of the compression spring 207, so that the filter membrane frame 202 is ensured to be separated from the square box body 201, the outer side of the sliding block 205 is provided with an inclined surface, after the filter membrane 203 is replaced, the side block 204 is pushed to drive the filter membrane frame 202 and the filter membrane 203 to move inwards to the square box body 201, the inclined surface at the outer side of the sliding block 205 is contacted with the square box body 201, so that the sliding block 205 is pressed into the slide block groove, and compresses the compression spring 207 to facilitate the sliding block 205 to be blocked on the outer side of the square box 201 again.
The principle is as follows: the automatic sampling monitoring system for the atmospheric particulates is used for sampling the atmospheric particulates, the automatic sampling monitoring system is placed in a flat position during sampling, a fan mechanism 3 is electrically started, the fan mechanism 3 can be matched with a filter box mechanism 2 and a sampling pipe mechanism 1 to suck external air into the filter box mechanism 2 and the sampling pipe mechanism 1 after being started, the external air is controlled to enter an outer pipe body 101 through a sampling port 104 on the side surface of the outer pipe body 101, then enter an inner pipe body 102 through a vent hole 105 on the top surface of the inner pipe body 102 and be conveyed to the filter box mechanism 2 through the inner pipe body 102 to filter particulates in the air, subsequent detection processing is facilitated, and the filtered air is discharged through an air outlet of the fan mechanism 3; when the sampling device is not used, the sampling port adjusting assembly 103 can control the inner tube body 102 to be plugged at the position of the sampling port 104 of the outer tube body 101 to close the sampling port, so that particles in the atmosphere are prevented from entering the sampling device through the sampling port when the sampling device is not used, and the detection precision of a subsequent sampling sample is ensured; when the sampling device is used, the sampling port adjusting assembly 103 can be used for adjusting the position of the inner tube body 102 for plugging the sampling port 104 of the outer tube body 101 to adjust the size of the sampling port 104, so that the sampling requirements under different conditions can be met.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. An automatic sampling monitoring system of atmospheric particulates, characterized by includes: the sampling pipe mechanism (1), the filter box mechanism (2), the fan mechanism (3) and the mounting table (4); the sampling tube mechanism (1) comprises an outer tube body (101), an inner tube body (102) and a sampling port adjusting component (103); a plurality of sampling ports (104) for air intake are arranged on the side surface of the outer tube body (101), and a plurality of vent holes (105) for ventilation are arranged on the top surface of the inner tube body (102) with the top end sliding in the outer tube body (101); the filter box mechanism (2) is fixed on the mounting table (4), and two ends of the filter box mechanism (2) are respectively connected with the bottom end of the inner pipe body (102) and the fan mechanism (3); one end of the sampling port (104) size assembly is connected to the outer pipe body (101), and the other end of the sampling port (104) size assembly is connected to the filter box mechanism (2) so as to drive the outer pipe body (101) and the inner pipe body (102) to slide relatively and adjust the position of the inner pipe body (102) for plugging the sampling port (104) of the outer pipe body (101).
2. The automatic sampling and monitoring system for atmospheric particulates according to claim 1, characterized in that the sampling port adjusting assembly (103) comprises an adjusting screw (103a) provided with a screwing head, and a linkage frame plate (103b) connected with the outer pipe body (101); the adjusting screw rod (103a) rotates on the filter box mechanism (2), and the adjusting screw rod (103a) drives the linkage frame plate (103b) in a threaded mode so as to drive the outer pipe body (101) to slide on the inner pipe body (102) through the linkage frame plate (103 b).
3. An automatic sampling and monitoring system for atmospheric particulates according to claim 2, characterized in that a detachable top cover (106) is arranged on the top of the outer pipe body (101), and a tensioning assembly (107) is arranged between the detachable top cover (106) and the inner pipe body (102) so as to tension and limit the outer pipe body (101) and the inner pipe body (102) after the relative positions are adjusted through the tensioning assembly (107).
4. The automatic sampling and monitoring system for atmospheric particulates according to claim 3, characterized in that the tensioning assembly (107) comprises a vertical guiding shaft (107a), a tensioning spring (107b) sleeved on the vertical guiding shaft (107a), and a spring seat (107c) fixed at one end of the vertical guiding shaft (107 a); one end of the vertical guide shaft (107a) is detachably connected to the detachable top cover (106), and the middle part of the vertical guide shaft (107a) slides on the top surface of the inner pipe body (102); a spring seat (107c) is located within the inner tube (102), and a tension spring (107b) is located between the spring seat (107c) and the top surface of the inner tube (102).
5. An automatic sampling and monitoring system for atmospheric particulates according to claim 2, characterized by further comprising a rotary driving mechanism (5); the rotary driving mechanism (5) comprises a servo motor (501) arranged on the filter box mechanism (2), a driving friction wheel (502) fixed on an output shaft of the servo motor (501), a linkage shaft (503) rotating on the linkage frame plate (103b), a driven friction wheel (504) fixed at one end of the linkage shaft (503), a driving bevel gear (505) fixed at the other end of the linkage shaft (503), and a driven bevel gear (506) meshed with the driving bevel gear (505) and fixed on the outer pipe body (101); the driving friction wheel (502) is vertically in friction transmission with the driven friction wheel (504), and the driving friction wheel (502) is positioned above the linkage shaft (503); the axis of the linkage shaft (503) is vertical to the axis of the adjusting screw rod (103 a).
6. The automatic sampling and monitoring system for atmospheric particulates according to claim 5, characterized in that a rain shield (6) is fixed on the top of the outer pipe body (101).
7. The automatic sampling and monitoring system for atmospheric particulates according to claim 6, characterized in that a plurality of cyclone impellers (7) are uniformly fixed around the bottom of the rain cover (6), and the cyclone impellers (7) are arranged around the outer sides of the sampling ports (104).
8. An automatic sampling and monitoring system for atmospheric particulates according to claim 7, characterized in that the swirl impeller (7) comprises a hanger (701), an inner impeller (702), an outer impeller (703), a limit stop (704) and a tension spring (705); the inner impeller (702) is fixed at the bottom of the rain cover (6) through a hanging bracket (701); the inner end of the outer impeller (703) is in sliding fit with the inner and outer chutes of the inner impeller (702), the outer impeller (703) is provided with a limit stop (704), and the limit stop (704) is in sliding fit with the limit slideway of the inner impeller (702); the inner side surface of the outer impeller (703) is connected with the outer ends of a plurality of extension springs (705), and the inner ends of the plurality of extension springs (705) are connected with the inner side surfaces of the inner and outer chutes of the inner impeller (702).
9. An automatic sampling and monitoring system for atmospheric particulates according to claim 8, characterized in that the swirl impeller (7) further comprises a counterweight rod (706); the outside of each outer impeller (703) is threaded with a weight rod (706).
10. The automatic sampling and monitoring system for atmospheric particulates according to claim 1, characterized in that the filter box mechanism (2) comprises a square box body (201), a filter membrane frame (202), a filter membrane (203), a side block (204), a sliding block (205), an unlocking slide block (206) and a compression spring (207); the two ends of the square box body (201) are respectively connected and communicated with the inner tube body (102) and the fan mechanism (3), the middle of the filter membrane frame (202) slides in a horizontal slide way of the square box body (201) in a sealing manner, a filter membrane (203) is arranged in the middle of the filter membrane frame (202), the filter membrane (203) is positioned in the square box body (201), one end of the filter membrane frame (202) is fixed with a side stop block (204), the side stop block (204) is blocked on one side surface of the square box body (201), the other end of the filter membrane frame (202) is provided with a slider groove, the inner end of the sliding stop block (205) slides in the slider groove, the outer end of the sliding stop block (205) is blocked on the other side surface of the square box body (201), and a compression spring (207) is arranged between the sliding stop block (205) and the inner side surface of the slider groove; the outer side of the sliding stop block (205) is provided with an inclined plane; an unlocking slide block (206) is arranged on the sliding block (205), and the unlocking slide block (206) slides in a side slide channel of the filter membrane frame (202).
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| CN202110954148.9A CN113532960A (en) | 2021-08-19 | 2021-08-19 | Automatic sampling monitoring system for atmospheric particulate matters |
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| CN202110954148.9A CN113532960A (en) | 2021-08-19 | 2021-08-19 | Automatic sampling monitoring system for atmospheric particulate matters |
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