CN213842949U - Atmospheric particulate concentration detection device - Google Patents
Atmospheric particulate concentration detection device Download PDFInfo
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- CN213842949U CN213842949U CN202022260108.8U CN202022260108U CN213842949U CN 213842949 U CN213842949 U CN 213842949U CN 202022260108 U CN202022260108 U CN 202022260108U CN 213842949 U CN213842949 U CN 213842949U
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Abstract
The utility model relates to the technical field of atmospheric detection instruments, and provides an atmospheric particulate matter concentration detection device, which comprises a frame, a detection seat, a ray receiving module, a radiation module and an air inlet pipe, wherein the detection seat is arranged on the frame and internally forms a detection chamber, the receiving end of the ray receiving module extends into the detection chamber of the detection seat, the radiation end of the radiation module extends into the detection chamber of the detection seat and is relatively separated from the receiving end of the ray receiving module to form a detection area for placing filter paper, the air inlet pipe is communicated with the detection chamber of the detection seat, the atmospheric particulate matter concentration detection device can realize that a sampling point and a detection point are positioned at the same position, thereby avoiding the conveying process of the filter paper between the sampling point and the detection point, effectively avoiding the filter paper from being polluted by external factors or the occurrence of the change of the uniformity degree of particulate matter distribution on the filter paper due to shaking, thereby effectively improving the detection accuracy of the atmospheric particulate concentration detection device.
Description
Technical Field
The utility model relates to an atmosphere detection instrument technical field especially provides an atmospheric particulates concentration detection device.
Background
In recent years, people have haze weather in many places in China, inconvenience is brought to daily work and life of people, and meanwhile, the health of people is harmed. And the tiny particulate matter in the atmosphere is the leading cause that leads to grey haze weather, and adopts detection device to detect the particulate matter concentration in the atmosphere is the main means of judging air quality.
The existing detection device generally collects the particulate matters in the air at a sampling point by using filter paper firstly, then conveys the filter paper for completing sampling to a detection point for particulate matter detection, but in the conveying process, the filter paper is easily polluted by external factors or the distribution uniformity of the particulate matters on the filter paper is changed due to shaking, and then the accuracy of subsequent particulate matter detection is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an atmospheric particulates concentration detection device aims at solving the technical problem that current atmospheric particulates concentration detection device detection accuracy is low.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions: an atmospheric particulate matter concentration detection apparatus comprising:
a frame;
the detection seat is arranged on the rack and internally forms a detection chamber;
the receiving end of the ray receiving module extends into the detection cavity of the detection seat;
the radiation end of the radiation module extends into the detection cavity of the detection seat and is relatively separated from the receiving end of the ray receiving module to form a detection area for placing filter paper;
and the air inlet pipe is communicated with the detection cavity of the detection seat.
The utility model provides an atmospheric particulates concentration detection device has following beneficial effect at least: the receiving end through with ray receiving module and the radiation end of radiation module all stretch into in the detection chamber that detects the seat to be linked together intake pipe and detection chamber, realize that sampling point and check point are in the same position, thereby avoid the transport process to filter paper between sampling point and check point, effectively avoid filter paper to receive external factor pollution or because of the condition emergence that the shake leads to the particulate matter distribution degree of consistency change on the filter paper, thereby effectively improve above-mentioned atmospheric particulates concentration detection device's detection accuracy.
In one embodiment, the atmospheric particulate concentration detection device further includes a driving mechanism, the detection seat includes a first seat body installed on the rack and having an air inlet cavity, and a movable seat having an air outlet cavity, the air inlet cavity of the first seat body and the air outlet cavity of the movable seat are communicated with each other to form the detection chamber, and the driving mechanism is configured to drive the movable seat to move toward a direction close to or away from the first seat body so as to clamp or release the filter paper.
In one embodiment, the detecting base further includes a second base mounted on the frame, and the movable base is movably mounted on the second base.
In one embodiment, the driving mechanism includes an elastic member, a first pressing rod, and a driving assembly, the elastic member abuts between the second seat body and the movable seat, and the driving assembly is configured to drive the first pressing rod to swing back and forth to abut against or separate from the movable seat.
In one embodiment, the driving assembly includes a first driver mounted on the frame and an eccentric wheel connected to a power output end of the first driver, the first pressing rod is rotatably mounted on the frame or the first seat body, and the first driver is configured to drive the eccentric wheel to rotate so that the eccentric wheel presses an end of the first pressing rod away from the movable seat.
In one embodiment, the driving assembly further includes a first position detecting unit electrically connected to the first driver and configured to identify a first rotational position of the eccentric, and a second position detecting unit electrically connected to the first driver and configured to identify a second rotational position of the eccentric, where the eccentric is in a compressed state with the first pressing rod when in the first rotational position, and the eccentric is in a relaxed state with the first pressing rod when in the second rotational position.
In one embodiment, the first driver is a motor, and an output shaft of the first driver is provided with a first trigger part, and the first trigger part is used for triggering the first position detection unit and the second position detection unit.
In one embodiment, the driving mechanism further includes a synchronizing shaft and a second pressing rod for abutting against the movable seat, the second pressing rod is fixedly connected with the first pressing rod through the synchronizing shaft, and the first pressing rod and the second pressing rod are respectively disposed on two opposite sides of the movable seat.
In one embodiment, the atmospheric particulate concentration detection device further comprises a feeding mechanism for conveying the filter paper to the detection seat, wherein the feeding mechanism comprises a second driver, an unwinding wheel and a winding wheel, and the second driver is used for driving the unwinding wheel or the winding wheel to rotate.
In one embodiment, the feeding mechanism further includes a third position detecting unit electrically connected to the second driver, and an encoding disc coaxially connected to the unwinding wheel or the winding wheel, the encoding disc is provided with a plurality of second triggering portions at equal intervals along a circumferential direction, and each of the second triggering portions is used for triggering the third position detecting unit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a front view of an atmospheric particulate concentration detection apparatus provided in an embodiment of the present invention;
FIG. 2 is a sectional view taken along A-A of the atmospheric particulate concentration detection apparatus shown in FIG. 1;
fig. 3 is an enlarged schematic structural view of a point a of the atmospheric particulate concentration detection apparatus shown in fig. 2;
fig. 4 is a rear view of an atmospheric particulate concentration detection apparatus provided by an embodiment of the present invention;
fig. 5 is a right side view of the atmospheric particulate concentration detection apparatus provided by the embodiment of the present invention;
fig. 6 is an enlarged schematic structural diagram at B of the atmospheric particulate matter concentration detection device shown in fig. 5.
Wherein, in the figures, the respective reference numerals:
10. a frame, 20, a detection seat, 21, a detection chamber, 22, a first seat body, 221, an air inlet cavity, 222, a first mounting hole, 23, a movable seat, 231, an air outlet cavity, 24, a second seat body, 241, an air exhaust channel, 242, a guide rod, 243, a second mounting hole, 30, a ray receiving module, 31, a receiving end, 40, a radiation module, 41, a radiation end, 50, a detection area, 60, an air inlet pipe, 70, a driving mechanism, 71, a first pressure rod, 72, a driving component, 721, a first driver, 7211, a first trigger part, 722, an eccentric wheel, 723, a first position detection unit, 724, a second position detection unit, 73, a second pressure rod, 80, a feeding mechanism, 81, a second driver, 82, a unwinding wheel, 83, a winding wheel, 84, a third position detection unit, 85, an encoding disk, 851, a second trigger part, 86, a first guide roller, 87, and a second guide roller, 90. and (5) filter paper.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third" 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, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 to 3, an atmospheric particulate concentration detection apparatus includes a frame 10, a detection seat 20, a radiation receiving module 30, a radiation module 40 and an air inlet pipe 60, wherein the detection seat 20 is mounted on the frame 10 and forms a detection chamber 21 therein, a receiving end 31 of the radiation receiving module 30 extends into the detection chamber 21 of the detection seat 20, a radiation end 41 of the radiation module 40 extends into the detection chamber 21 of the detection seat 20 and is relatively separated from the receiving end 31 of the radiation receiving module 30 to form a detection area 50 for placing a filter paper 90 therein, and the air inlet pipe 60 is communicated with the detection chamber 21 of the detection seat 20.
When the air flow passes through the filter paper 90, the particulate matters are separated from the air and attached to the filter paper 90, at this time, the radiation module 40 emits rays to the filter paper 90, the rays penetrate through the filter paper 90 and enter the ray receiving module 30, and the particulate matter concentration of the air can be obtained by analyzing and calculating the energy attenuation of the rays received by the ray receiving module 30.
Above-mentioned atmospheric particulates concentration detection device all stretches into the detection cavity 21 that detects seat 20 through receiving terminal 31 with ray receiving module 30 and radiation end 41 of radiation module 40 in, and be linked together intake pipe 60 and detection cavity 21, realize that sampling point and check point are in the same position, thereby avoid the transport process to filter paper 90 between sampling point and check point, effectively avoid filter paper 90 to receive external factor pollution or because of the condition emergence that the shake leads to the change of the particulate matter distribution degree of consistency on the filter paper 90, thereby effectively improve above-mentioned atmospheric particulates concentration detection device's detection accuracy.
Specifically, the above atmospheric particulate matter concentration detection apparatus further includes an intake pump (not shown), and the intake pump is configured to quantitatively draw the outside air into the intake pipe 60.
Specifically, the radiation receiving module 30 is a β -particle counter, and the radiation module 40 is a C14 radiation module 40.
In this embodiment, please refer to fig. 1 and fig. 3, the apparatus for detecting the concentration of atmospheric particulates further includes a driving mechanism 70, the detecting base 20 includes a first base 22 installed on the frame 10 and having an air inlet cavity 221, and a movable base 23 having an air outlet cavity 231, the air inlet cavity 221 of the first base 22 and the air outlet cavity 231 of the movable base 23 are communicated with each other to form a detecting chamber 21, and the driving mechanism 70 is configured to drive the movable base 23 to move toward or away from the first base 22 to clamp or release the filter paper 90. In operation, the driving mechanism 70 drives the movable seat 23 to move away from the first seat 22, then, the filter paper 90 is placed in the gap between the first seat 22 and the movable seat 23, and then the driving mechanism 70 drives the movable seat 23 to move toward the direction close to the first seat 22, so that the movable seat 23 and the first seat 22 clamp the filter paper 90 together, at this time, the filter paper 90 covers the communication position between the air inlet cavity 221 of the first seat 22 and the air outlet cavity 231 of the movable seat 23, air enters the air inlet cavity 221 from the air inlet pipe 60, and enters the air outlet cavity 231 through the filter paper 90 and then is discharged outside, then the radiation module 40 and the radiation receiving module 30 cooperate with each other to detect the concentration of the particulate matter in the air, and after the detection is completed, the driving mechanism 70 drives the movable seat 23 to move towards the direction away from the first seat body 22 again, so as to release the filter paper 90, and thus the filter paper 90 can be replaced.
Specifically, as shown in fig. 1 and fig. 3, the detecting base 20 further includes a second base 24 installed on the frame 10, and the movable base 23 is movably installed on the second base 24. Through setting up second pedestal 24 and install movable seat 23 movably on second pedestal 24, effectively improve movable seat 23's removal stability.
Specifically, as shown in fig. 3, an air vent 241 communicated with the air outlet cavity 231 of the movable seat 23 is formed in the second seat body 24, the air vent 241 is communicated with the outside, and the air flows through the air inlet cavity 221, the filter paper 90 and the air outlet cavity 231 in sequence and then is exhausted from the air vent 241 to the outside.
Specifically, as shown in fig. 3, the second seat 24 is provided with a guide rod 242 extending toward the first seat 22, the movable seat 23 is provided with a guide hole (not shown), and the guide rod 242 is disposed in the guide hole, so that the movable seat 23 can reciprocate along the guide of the guide rod 242, and the movement stability of the movable seat 23 is further improved.
Specifically, as shown in fig. 3, the first seat 22 is provided with a first mounting hole 222 communicated with the air inlet cavity 221, the ray receiving module 30 is mounted in the first mounting hole 222, and the receiving end 31 of the ray receiving module 30 extends into the air inlet cavity 221 of the first seat 22 through the first mounting hole 222; the second seat 24 is provided with a second mounting hole 243 communicated with the air outlet cavity 231 of the movable seat 23, the radiation module 40 is mounted in the second mounting hole 243, and the radiation end 41 of the radiation module 40 extends into the air outlet cavity 231 of the movable seat 23 through the second mounting hole 243.
Specifically, as shown in fig. 1 and fig. 3, the driving mechanism 70 includes an elastic member (not shown), a first pressing rod 71 and a driving assembly 72, the elastic member is abutted between the second seat 24 and the movable seat 23, and the driving assembly 72 is used for driving the first pressing rod 71 to swing back and forth to abut against or separate from the movable seat 23. When the driving assembly 72 drives the first pressing rod 71 to swing in the forward direction, the first pressing rod 71 abuts against the movable seat 23 and applies pressure to the movable seat 23, so that the movable seat 23 moves in a direction away from the first seat body 22 against the elastic force of the elastic member, and at this time, the filter paper 90 can be placed in a gap between the first seat body 22 and the movable seat 23 or the filter paper 90 which is subjected to the detection operation is replaced; when the driving assembly 72 drives the first pressing rod 71 to swing in the opposite direction, the first pressing rod 71 is separated from the movable seat 23, the movable seat 23 moves toward the first seat 22 under the elastic action of the elastic member, and at this time, the filter paper 90 is clamped between the first seat 22 and the movable seat 23.
It should be noted that the elastic member may be a variety of types, such as a spring, a spring plate, etc., and is not limited herein.
Specifically, as shown in fig. 1 and fig. 4, the driving assembly 72 includes a first driver 721 installed on the frame 10 and an eccentric wheel 722 connected to a power output end of the first driver 721, the first pressing rod 71 is rotatably installed on the frame 10 or the first seat 22, and the first driver 721 is configured to drive the eccentric wheel 722 to rotate so that the eccentric wheel 722 presses an end of the first pressing rod 71 away from the movable seat 23. When the first driver 721 drives the eccentric wheel 722 to rotate to a position where the eccentric wheel is pressed against the first pressing rod 71, the first pressing rod 71 swings towards the positive direction, at this time, one end of the first pressing rod 71 abuts against the movable seat 23 and applies pressure to the movable seat 23, so that the movable seat 23 moves away from the first seat body 22 by overcoming the elastic force of the elastic member, and at this time, the filter paper 90 can be placed in the gap between the first seat body 22 and the movable seat 23 or the filter paper 90 completing the detection operation is replaced; then, the first driver 721 continues to drive the eccentric wheel 722 to rotate, the eccentric wheel 722 is released from the pressing state with the first pressing rod 71, one end of the first pressing rod 71 is separated from the movable seat 23, the movable seat 23 moves towards the direction close to the first seat 22 under the elastic action of the elastic element, and at this time, the filter paper 90 is clamped between the first seat 22 and the movable seat 23.
Specifically, as shown in fig. 5 and fig. 6, the driving assembly 72 further includes a first position detecting unit 723 electrically connected to the first driver 721 and configured to identify a first rotation position of the eccentric 722, and a second position detecting unit 724 electrically connected to the first driver 721 and configured to identify a second rotation position of the eccentric 722, where the eccentric 722 is in a pressing state with the first pressing rod 71 when in the first rotation position, and the eccentric 722 is in a loosening state with the first pressing rod 71 when in the second rotation position. When the first position detecting unit 723 detects that the eccentric wheel 722 is at the first rotation position, the first driver 721 is controlled to stop for a first preset time, and at this time, the filter paper 90 may be placed in the gap between the first seat 22 and the movable seat 23 or the filter paper 90 that has completed the detection operation may be replaced; when the second detecting unit detects that the eccentric wheel 722 is at the second rotation position, the first driver 721 is controlled to stop for a second preset time, at this time, the filter paper 90 is clamped between the first seat 22 and the movable seat 23, and the radiation module 40 and the radiation receiving module 30 cooperate with each other to detect the particulate matters on the filter paper 90. So, can effectively improve above-mentioned atmospheric particulates concentration detection device's degree of automation to effectively improve above-mentioned atmospheric particulates concentration detection device's use convenience and detection efficiency.
Specifically, please refer to fig. 5 and 6, the first driver 721 is a motor, the output shaft of the first driver 721 is provided with a first triggering unit 7211, and the first triggering unit 7211 is configured to trigger the first position detecting unit 723 and the second position detecting unit 724. The eccentric wheel 722 is connected to an output shaft of the first driver, when the first driver 721 rotates, the eccentric wheel 722 rotates synchronously with the first triggering portion 7211, when the first triggering portion 7211 rotates to a triggering position of the first position detecting unit 723, the first position detecting unit 723 can detect that the eccentric wheel 722 is at the first rotating position, and similarly, when the first triggering portion 7211 rotates to a triggering position of the second position detecting unit 724, the second position detecting unit 724 can detect that the eccentric wheel 722 is at the second rotating position, so that the rotating position of the eccentric wheel 722 can be effectively detected, and the start-stop control accuracy of the first driver 721 can be effectively ensured.
It should be noted that the types of the first position detecting unit 723 and the second position detecting unit 724 include various types, such as an optical position sensor, an ultrasonic position sensor, and the like, and are not limited in detail herein.
Specifically, as shown in fig. 1 and fig. 3, the driving mechanism 70 further includes a synchronizing shaft (not shown) and a second pressing rod 73 for abutting against the movable seat 23, the second pressing rod 73 is fixedly connected to the first pressing rod 71 through the synchronizing shaft, and the first pressing rod 71 and the second pressing rod 73 are respectively disposed on two opposite sides of the movable seat 23. Through set up first depression bar 71 and second depression bar 73 respectively in the relative both sides of sliding seat 23, first depression bar 71 and second depression bar 73 exert pressure to sliding seat 23 simultaneously, make the whole atress of sliding seat 23 even, effectively avoid the condition that sliding seat 23 inclines to appear in the removal process to effectively improve sliding seat 23's removal stability.
In this embodiment, please refer to fig. 1 and 4, the apparatus for detecting the concentration of atmospheric particulates further includes a feeding mechanism 80 for conveying the filter paper 90 to the detection base 20, the feeding mechanism 80 includes a second driver 81, an unwinding wheel 82 and a winding wheel 83, and the second driver 81 is used for driving the unwinding wheel 82 or the winding wheel 83 to rotate. Unreel wheel 82 and be used for convoluteing unused filter paper 90, wind-up wheel 83 is used for collecting the filter paper 90 after accomplishing the detection, when second driver 81 drive unreels wheel 82 or wind-up wheel 83 rotates, thereby drive filter paper 90 and remove, in order to realize automatic continuous to carrying filter paper 90 to detecting seat 20, thereby realize above-mentioned atmospheric particulates concentration detection device to the continuous automated inspection of air particulates concentration, effectively improve above-mentioned atmospheric particulates concentration detection device's detection efficiency.
It should be noted that the kind of the second driver 81 includes various kinds, such as a motor, an electric cylinder combined with a rack and pinion mechanism, and the like, and is not limited in detail herein.
Specifically, as shown in fig. 4, the feeding mechanism 80 further includes a third position detecting unit 84 electrically connected to the second driver 81, and a code wheel 85 coaxially connected to the unwinding wheel 82 or the winding wheel 83, wherein the code wheel 85 is provided with a plurality of second triggering portions 851 at equal intervals along the circumferential direction, and each of the second triggering portions 851 is used for triggering the third position detecting unit 84. The unwinding wheel 82 and the winding wheel 83 both rotate synchronously with the encoding disk 85, when a certain second trigger portion 851 of the encoding disk 85 rotates to a trigger position of the third position detection unit 84, the third position detection unit 84 controls the second driver 81 to stop operating, after a period of detection operation is completed, the second driver 81 continues operating until the next second trigger portion 851 of the encoding disk 85 rotates to the trigger position of the third position detection unit 84, so that the feeding mechanism 80 can effectively realize quantitative conveying of the filter paper 90, and continuous automatic detection operation of the atmospheric particulate matter concentration detection device on the concentration of the atmospheric particulate matter is effectively realized.
It should be noted that the type of the third position detecting unit 84 includes various types, such as an optical position sensor, an ultrasonic position sensor, etc., and is not limited in particular.
Specifically, as shown in fig. 1, the feeding mechanism 80 further includes a first guide roller 86 and a second guide roller 87 both rotatably mounted on the frame 10, the first guide roller 86 is disposed between the unwinding wheel 82 and the detection seat 20, the second guide roller 87 is disposed between the winding wheel 83 and the detection seat 20, one end of the filter paper 90 bypasses the first guide roller 86, and the other end of the filter paper 90 bypasses the second guide roller 87, so as to maintain the tight state of the filter paper 90, and prevent the detection accuracy of the atmospheric particulate concentration detection apparatus from being affected by the wrinkles of a portion of the filter paper 90 located between the first seat 22 and the movable seat 23. In this embodiment, the above-described encoder disk 85 may be coaxially connected to one of the unwinding wheel 82, the winding wheel 83, the first guide roller 86, and the second guide roller 87.
The overall operation of the atmospheric particulate concentration detection apparatus will be described below.
Initially, the first seat body 22 and the movable seat 23 are joined to each other to clamp the filter paper 90, at this time, the air intake pump draws air into the air intake pipe 60, the air sequentially flows through the air intake pipe 60, the air intake cavity 221 of the first seat body 22, the filter paper 90 and the air outlet cavity 231 of the movable seat 23, and is finally discharged outside through the air exhaust passage 241 of the second seat body 24, then the radiation module 40 emits rays to the filter paper 90, the rays penetrate through the filter paper 90 and enter the incident ray receiving module 30, and the particle concentration of the air can be obtained by analyzing and calculating the energy attenuation of the rays received by the incident ray receiving module 30, so that a detection cycle is completed;
then the first driver 721 drives the eccentric wheel 722 to rotate to a first rotation position, the first triggering portion 7211 triggers the first position detecting unit 723, the first position detecting unit 723 controls the first driver 721 to stop operating, at this time, the eccentric wheel 722 and the first pressure lever 71 are in a pressing state, so that the first pressure lever 71 swings in a forward direction, one end of the first pressure lever 71 away from the eccentric wheel 722 abuts against the movable seat 23 and presses the movable seat 23, so that the movable seat 23 moves in a direction away from the first seat 22 against the elastic force of the elastic member, then the second driver 81 drives the unwinding wheel 82 or the winding wheel 83 to rotate until the second triggering portion 851 of the encoder disk 85 triggers the third position detecting unit 84, the third position detecting unit 84 controls the second driver 81 to stop operating, so as to drive the filter paper 90 to move a preset distance, so as to automatically and quantitatively convey the filter paper 90 to the detecting seat 20, and then the first driver 721 continues to drive the eccentric wheel 722 to rotate to a second rotation position, the first triggering portion 7211 triggers the second position detecting unit 724, the second position detecting unit 724 controls the first driver 721 to stop operating, at this time, the eccentric wheel 722 and the first pressing rod 71 are in a loose state, so that the first pressing rod 71 swings in the reverse direction, one end of the first pressing rod 71 away from the eccentric wheel 722 is separated from the movable seat 23, the movable seat 23 moves in a direction close to the first seat 22 under the elastic action of the elastic member, at this time, the filter paper 90 is clamped between the first seat 22 and the movable seat 23, and then the next detection period can be entered, so that the continuous automatic detection operation of the atmospheric particulate matter concentration detecting device on the concentration of the atmospheric particulate matter is effectively realized.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An atmospheric particulate matter concentration detection device, characterized by comprising:
a frame;
the detection seat is arranged on the rack and internally forms a detection chamber;
the receiving end of the ray receiving module extends into the detection cavity of the detection seat;
the radiation end of the radiation module extends into the detection cavity of the detection seat and is relatively separated from the receiving end of the ray receiving module to form a detection area for placing filter paper;
and the air inlet pipe is communicated with the detection cavity of the detection seat.
2. The atmospheric-particulate-matter concentration detection device according to claim 1, characterized in that: the atmospheric particulates concentration detection device still includes actuating mechanism, detect the seat including install in the frame and have the first pedestal in chamber of admitting air to and have the movable seat in chamber of giving vent to anger, first pedestal admit air the chamber with the movable seat give vent to anger the chamber intercommunication each other and form detect the cavity, actuating mechanism is used for the drive the movable seat is close to or keeps away from the direction of first pedestal removes in order to with filter paper centre gripping or release.
3. The atmospheric-particulate-matter concentration detection device according to claim 2, characterized in that: the detection seat further comprises a second seat body arranged on the rack, and the movable seat is movably arranged on the second seat body.
4. The atmospheric-particulate-matter concentration detection device according to claim 3, characterized in that: the driving mechanism comprises an elastic piece, a first pressing rod and a driving assembly, the elastic piece is abutted between the second base body and the movable base, and the driving assembly is used for driving the first pressing rod to swing in a reciprocating mode so as to be abutted to or separated from the movable base.
5. The atmospheric-particulate-matter concentration detection apparatus according to claim 4, characterized in that: the driving assembly comprises a first driver arranged on the rack and an eccentric wheel connected to a power output end of the first driver, the first pressing rod is rotatably arranged on the rack or the first base body, and the first driver is used for driving the eccentric wheel to rotate so as to enable the eccentric wheel to press one end, far away from the movable seat, of the first pressing rod.
6. The atmospheric-particulate-matter concentration detection device according to claim 5, characterized in that: the driving assembly further comprises a first position detection unit electrically connected with the first driver and used for identifying a first rotating position of the eccentric wheel, and a second position detection unit electrically connected with the first driver and used for identifying a second rotating position of the eccentric wheel, the eccentric wheel is in a compression state with the first pressing rod when in the first rotating position, and the eccentric wheel is in a relaxation state with the first pressing rod when in the second rotating position.
7. The atmospheric-particulate-matter concentration detection device according to claim 6, characterized in that: the first driver is a motor, a first trigger part is arranged on an output shaft of the first driver, and the first trigger part is used for triggering the first position detection unit and the second position detection unit.
8. The atmospheric-particulate-matter concentration detection apparatus according to claim 4, characterized in that: the driving mechanism further comprises a synchronizing shaft and a second pressing rod which is used for being abutted to the movable seat, the second pressing rod is fixedly connected with the first pressing rod through the synchronizing shaft, and the first pressing rod and the second pressing rod are respectively arranged on two opposite sides of the movable seat.
9. The atmospheric-particulate-matter-concentration detection apparatus according to any one of claims 1 to 8, characterized in that: the atmospheric particulate matter concentration detection device further comprises a feeding mechanism used for conveying the filter paper to the detection seat, the feeding mechanism comprises a second driver, an unwinding wheel and a winding wheel, and the second driver is used for driving the unwinding wheel or the winding wheel to rotate.
10. The atmospheric-particulate-matter concentration detection device according to claim 9, characterized in that: the feeding mechanism further comprises a third position detection unit electrically connected with the second driver and an encoding disc coaxially connected with the unwinding wheel or the winding wheel, a plurality of second triggering parts are arranged on the encoding disc at equal intervals along the circumferential direction, and each second triggering part is used for triggering the third position detection unit.
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| CN202022260108.8U CN213842949U (en) | 2020-10-12 | 2020-10-12 | Atmospheric particulate concentration detection device |
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| CN202022260108.8U CN213842949U (en) | 2020-10-12 | 2020-10-12 | Atmospheric particulate concentration detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117990572A (en) * | 2024-03-20 | 2024-05-07 | 绍兴中励环保设备有限公司 | Strong wind particulate matter concentration detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117990572A (en) * | 2024-03-20 | 2024-05-07 | 绍兴中励环保设备有限公司 | Strong wind particulate matter concentration detection device |
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