CN113252503A - Automatic rain-shielding dust fall detection device - Google Patents
Automatic rain-shielding dust fall detection device Download PDFInfo
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- CN113252503A CN113252503A CN202110634673.2A CN202110634673A CN113252503A CN 113252503 A CN113252503 A CN 113252503A CN 202110634673 A CN202110634673 A CN 202110634673A CN 113252503 A CN113252503 A CN 113252503A
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- 239000000428 dust Substances 0.000 title claims abstract description 101
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 80
- 238000005303 weighing Methods 0.000 claims description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 238000009434 installation Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 61
- 239000012153 distilled water Substances 0.000 description 32
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 26
- 238000002955 isolation Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000011010 flushing procedure Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a dust fall detection device capable of automatically shielding rain, which comprises: the top of the box body is provided with a rain and snow sensor for monitoring rain and snow; the sampling unit is positioned on the outer side of the box body and comprises a dust collecting cylinder for collecting atmospheric dust, and the top end of the dust collecting cylinder is positioned on the outer side of the box body and has a set distance with the top wall of the box body; the rain shielding device comprises a rain shielding cover and a rain shielding cover driving mechanism, wherein the rain shielding cover is used for shielding the dust collecting cylinder in rainy and snowy weather, the rain shielding cover driving mechanism drives the rain shielding cover to be switched between a non-shielding station and a shielding station, and when the rain shielding cover is positioned at the non-shielding station, the rain shielding cover is positioned in the mounting groove of the top wall of the box body; when the rain and snow sensor detects rain and snow weather, the rain cover driving mechanism drives the rain cover to rise to the height matched with the dust collecting cylinder and then rotate to the position covering the dust collecting cylinder, and the rain cover is positioned at the shielding station. The invention solves the problems of poor reliability and low detection accuracy of the existing dust fall detection device capable of automatically shielding rain.
Description
Technical Field
The invention relates to the field of dust fall monitoring, in particular to a dust fall detection device capable of automatically shielding rain.
Background
The atmospheric dustfall refers to particulate matters naturally settled in a dust collection cylinder by gravity under the air environment condition. Is one of the main indexes reflecting the pollution of the atmospheric dust particles. Dust fall monitoring is an indispensable means for researching atmospheric dust fall. The dust fall monitoring is that the settleable particles in the ambient air are settled in a dust collecting tank filled with glycol aqueous solution as collecting liquid, and the dust fall amount is calculated after evaporation, drying and weighing.
Most of the existing dust fall monitoring equipment comprises a collecting unit, a heating unit, a weighing unit and a glycol water solution supply unit; before sampling by the acquisition unit, a glycol aqueous solution is generally injected into a dust collection cylinder, and then the solution in the dust collection cylinder is transferred into a beaker, heated and dried, and weighed to obtain the dustfall weight. In order to avoid falling into sleet influence in the collection dirt jar when sleet weather and detect the accuracy, current dust fall monitoring facilities still sets up the rain device that hides that shelters from a collection dirt jar, and it shelters from a collection dirt jar when sleet weather. However, in the existing dust fall monitoring equipment, the rain shielding device only realizes that the rain shielding device is converting between a shielding station and a non-shielding station through rotation, and under the condition that the equipment is in normal working, the rain shielding device needs a longer support rod to support, and is easy to damage or cannot guarantee the position precision under severe weather conditions such as strong wind, and finally, the shielding effect is poor, and the reliability and the detection accuracy of the dust fall monitoring equipment are influenced.
Disclosure of Invention
The invention aims to solve the technical problems of poor reliability and low measurement accuracy of the existing dust fall monitoring device.
In order to solve the technical problems, the invention provides the following technical scheme:
an automatic rain-sheltering dust fall detection device, comprising: the top of the box body is provided with a rain and snow sensor for monitoring rain and snow; the sampling unit is positioned on the outer side of the box body and comprises a dust collecting cylinder for collecting atmospheric dustfall, and the top end of the dust collecting cylinder is positioned on the outer side of the box body and has a set distance with the top wall of the box body; the rain shielding device comprises a rain shielding cover and a rain shielding cover driving mechanism, wherein the rain shielding cover is used for shielding the dust collecting cylinder in rainy and snowy weather, the rain shielding cover driving mechanism drives the rain shielding cover to be switched between a non-shielding station and a shielding station, and when the rain shielding cover is in the non-shielding station, the rain shielding cover is positioned in the mounting groove of the top wall of the box body; when the rain and snow sensor detects rain and snow weather, the rain cover driving mechanism drives the rain cover to be lifted to the position which is matched with the dust collecting cylinder and then rotated to cover the dust collecting cylinder, and the rain cover is positioned at a shielding station.
In some embodiments of the invention, the rain cover driving mechanism includes: a second support bar for supporting the rain cover; the second lifting motor is used for driving the second supporting rod to lift; and the second rotating motor is used for driving the second supporting rod to rotate.
In some embodiments of the present invention, the second lifting motor and the second rotating motor are located inside the box body, the second support rod is inserted into the box body, at least two stages of telescopic rods are sleeved outside the second support rod, the telescopic rod located at the uppermost side is connected to the top of the second support rod, and the bottom of the telescopic rod located at the lowermost side is connected to the box body through a flange.
In some embodiments of the present invention, the box body is provided with a sinking platform, the sinking platform is located at a lower side of the installation groove, and the flange is installed on an upper surface of the sinking platform.
In some embodiments of the invention, the outer diameter of the telescopic rod located at the lower side is smaller than the outer diameter of the telescopic rod located at the upper side.
In some embodiments of the present invention, the rain cover includes a rain cover body and a rain cover connecting arm connected to the rain cover body, the second supporting rod is connected to the rain cover connecting arm through an adaptor, and the uppermost telescopic rod is connected to the second supporting rod through the adaptor.
In some embodiments of the present invention, the box body includes a box body and a box cover, the mounting groove is formed on a top wall of the box cover, the sinking platform is formed on the box body, and the mounting groove is provided with a through hole for penetrating the second support rod and the telescopic rod.
In some embodiments of the present invention, a first drainage port is disposed in the mounting groove, a second drainage port is disposed at a lower side of the box body, a drainage pipe is disposed between the first drainage port and the second drainage port, and accumulated water in the mounting groove is drained to an outer side of the box body along the drainage pipe.
In some embodiments of the invention, the heating device further comprises a constant weight heating unit and a weighing unit which are positioned in the box body; the constant-weight heating unit comprises at least one beaker, a beaker heating device, a chamber heating device and a beaker driving device, the beaker heating device and the chamber heating device are positioned in a first chamber in the box body, and the at least one beaker is communicated with the dust collecting cylinder through a pipette; the beaker heating device is used for heating the beaker, the chamber heating device is used for heating the first chamber, and the beaker driving device is used for driving the beaker to be transferred to the beaker heating device; the weighing unit comprises a weighing disc and a weighing sensor which are connected through a weighing rod, the weighing disc is located in the first cavity, and the beaker driving device is further used for driving the beaker to be transferred onto the weighing disc.
In some embodiments of the present invention, the beaker driving means includes a beaker bracket, a first support rod, a first rotating motor, and a first elevating motor; the beaker bracket is used for supporting the beaker, the first supporting rod is used for supporting the beaker bracket, and the first rotating motor is used for driving the first supporting rod to rotate so as to enable the beaker to be converted from a heating station to a weighing station; the first lifting motor is used for driving the first supporting rod to lift so as to place the beaker on the weighing tray or separate the beaker from the weighing tray.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
in the automatic rain-sheltering dust fall detection device provided by the invention, the dust collection cylinder and the top wall of the box body are arranged at intervals so as to prevent dust on the top wall of the box body from falling into the dust collection cylinder, and the sampling accuracy of the sampling unit is improved; still including the rain device that hides that is used for sheltering from a collection dirt jar, the rain device that hides sets up the rain cover that can go up and down, and it can be in the non-station of sheltering from and shelter from the station switching, and during the non-station of sheltering from, the rain cover is installed in the mounting groove of box, avoids the second bracing piece that hides the rain device to receive external force and damage, when needing to shelter from, hides that rain cover actuating mechanism makes the rain cover rise and rotate until the position that covers a collection dirt jar, avoids getting into the rainwater in the collection dirt jar. The structure of the rain shielding device can improve the working reliability of the automatic rain shielding dust fall detection device, so that the detection accuracy is better.
Drawings
The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an embodiment of the automatic rain-sheltering dust fall detection device of the present invention;
fig. 2 is another schematic structural diagram of an embodiment of the automatic rain-sheltering dust fall detection device of the present invention;
fig. 3 is another schematic structural diagram of an embodiment of the automatic rain-sheltering dust fall detection device of the present invention;
fig. 4 is a schematic structural diagram of a specific embodiment of a sampling unit of the automatic rain-sheltering dust fall detection device of the present invention;
fig. 5 is another schematic structural diagram of an embodiment of the automatic rain-sheltering dust fall detection device of the present invention;
fig. 6 is a schematic structural view of a rain shielding device of the automatic rain shielding dust fall detection device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a beaker of the automatic rain-shielding dust fall detection device and a beaker driving device according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of a weighing unit of the automatic rain-shielding dust fall detection device according to an embodiment of the invention;
fig. 9 is another schematic structural diagram of an embodiment of the automatic rain-sheltering dustfall detection device according to the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., 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, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 to 9 show an embodiment of an automatic rain-shielding dustfall detection device according to the present invention, and as shown in fig. 1 and 2, the automatic rain-shielding dustfall detection device includes: the device comprises a box body 10, a sampling unit 20 which is positioned outside the box body 10 and used for collecting atmospheric dustfall, a constant weight heating unit 30 which is positioned inside the box body 10 and used for heating dustfall solution, a weighing unit 40 used for weighing the dried dustfall, a supply unit 50 used for supplying distilled water and glycol, and a rain shielding device 60 used for shielding the sampling unit 20 in rainy and snowy weather,
wherein, the sampling unit 20 comprises a dust collecting cylinder 201, and the top end of the dust collecting cylinder 201 is located outside the box body 10 and has a set distance with the top wall of the box body 10; a rain and snow sensor 70 is further disposed on the top wall of the box body 10, as shown in fig. 6, the rain shielding device 60 includes a rain shielding cover 601 and a rain shielding cover driving mechanism, wherein the rain shielding cover 601 is used for shielding the dust collecting tank 201 in rainy and snowy weather, the rain shielding cover driving mechanism drives the rain shielding cover 601 to switch between a non-shielding station and a shielding station, and when the rain shielding cover 601 is in the non-shielding station, the rain shielding cover 601 is located in the installation groove 10a on the top wall of the box body 10; when the rain and snow sensor 70 detects rain and snow weather, the rain cover driving mechanism drives the rain cover 601 to be lifted to the height matched with the dust collection cylinder 201 and then to be rotated to the position covering the dust collection cylinder 201, and the rain cover 601 is located at a shielding station.
In the automatic rain-shielding dustfall detection device, on one hand, the dust collecting cylinder 201 and the top wall of the box body 10 are arranged at intervals to prevent dust on the top wall of the box body 10 from falling into the dust collecting cylinder 201, so that the sampling accuracy of the sampling unit 20 is improved; in order to avoid rainwater entering the dust collecting cylinder 201 in rainy and snowy weather, the rain shielding device 60 for shielding the dust collecting cylinder 201 is further included, the rain shielding device 60 is provided with a rain shielding cover 601 capable of lifting, the rain shielding cover 601 can be switched with a shielding station in a non-shielding mode, the rain shielding cover 601 is installed in the installation groove 10a of the box body 10 in the non-shielding mode, the second support rod 602 of the rain shielding device 60 is prevented from being damaged due to external force, when shielding is needed, the rain shielding cover driving mechanism enables the rain shielding cover 601 to lift and rotate until the position of the dust collecting cylinder 201 is covered, and rainwater entering the dust collecting cylinder 201 is avoided.
Specifically, the rain cover driving mechanism includes a second support rod 602, a second lifting motor 603, and a second rotating motor 604; the second support rod 602 is configured to support the rain shade 601, and the second lifting motor 603 is configured to drive the second support rod 602 to lift; the second rotating motor 604 is used for driving the second supporting rod 602 to rotate. The second lifting motor 603 is connected to the second support rod 602 through a second linear guide 605, and the second linear guide 605 can make the linear motion of the second support rod 602 more stable.
Specifically, second elevator motor 603 with second rotating electrical machines 604 is located the box 10 is inboard, rain cover 601 is located the box 10 outside, second bracing piece 602 wears to locate on the box 10, in order to avoid under the sleet weather, lie in ponding on the box 10 along second bracing piece 602 with inside the gap inflow box 10 between the box 10, at least two-stage telescopic link 606 is established to the cover in the second bracing piece 602 outside, is located the top the telescopic link 606 with the top of second bracing piece 602 is connected, is located the downside the telescopic link 606 bottom pass through the ring flange 607 with the box 10 is connected.
The box body 10 is provided with a sinking platform 10b, the sinking platform 10b is positioned at the lower side of the mounting groove 10a, and the flange plate 607 is mounted on the upper surface of the sinking platform 10 b.
Specifically, the box 10 includes a box body 11 and a box cover 12, the mounting groove 10a is formed on the top wall of the box cover 12, the sinking platform 10b is formed on the box body 11, and the mounting groove 10a is provided with a through hole for penetrating the second support rod 602 and the telescopic rod 606.
Specifically, as shown in fig. 2, the rain shielding device 60 is provided with a three-stage telescopic rod 606. When the second supporting rod 602 gradually rises under the control of the second lifting motor 603, the telescopic rods 606 sequentially extend from bottom to top; when the second support rod 602 is gradually lowered under the control of the second lifting motor 603, the telescopic rods 606 are sequentially contracted from top to bottom. The outer diameter of the expansion link 606 located at the lower side is smaller than the outer diameter of the expansion link 606 located at the upper side. Thus, rainwater on the upper side of the telescopic rod 606 does not flow to the lowest telescopic rod 606 along the lower telescopic rod 606 in sequence, and excessive rainwater around the lowest telescopic rod 606 is avoided.
Specifically, the rain cover 601 includes a rain cover body 6011 and a rain cover connecting arm 6012 connected to the rain cover body 6011, the second support rod 602 is connected to the rain cover connecting arm 6012 through an adaptor 608, and the telescopic rod 606 at the uppermost side is connected to the second support rod 602 through the adaptor 608.
Specifically, a drying device is arranged in the mounting groove 10a and used for drying accumulated water or accumulated snow in the mounting groove 10 a. More specifically, the drying device is an electric heating device installed at the bottom of the installation groove 10a, and the electric heating device is an electric heating wire installed at the inner side of the top wall of the cabinet 10. Ponding or freezing in the mounting groove 10a can be avoided under the sleet weather through set up drying device in mounting groove 10a, make rain shelter device 60 can not soak in the aquatic or with the collision that freezes in the mounting groove 10a when being located mounting groove 10a, improved this rain shelter device's operational reliability.
Specifically, the box body 10 is further provided with a temperature sensor for detecting the surface temperature of the mounting groove 10a, and specifically, the temperature sensor is mounted on the upper surface of the mounting groove 10 a. When sleet sensor 70 detects non-sleet weather and rain device 60 is in when sheltering from the station, simultaneously, when the temperature that temperature sensor detected is less than the settlement temperature, for example is less than 0 ℃, control at first drying device starts, makes mounting groove 10a dries, works as temperature sensor detects that mounting groove 10a surface temperature is greater than and sets for the threshold value after, control again second rotating electrical machines 604 and second elevator motor 603 start in proper order, makes rain cover 601 move to in the mounting groove 10a, dries mounting groove 10a in advance through drying device, avoids under being less than 0 ℃ temperature environment, and mounting groove 10a memory has the accumulated ice to lead to rain cover 601 can't get into in the mounting groove 10 a.
Specifically, the appearance of mounting groove 10a with the appearance of rain cover 201 matches, in order to avoid that the interior rainy or snowy weather ponding of mounting groove 10a, be equipped with first drain port 10a1 in the mounting groove 10a, the downside of box 10 is equipped with the second outlet (not shown in the figure), set up the drain pipe between first drain port 10a1 and the second outlet, ponding in the mounting groove 10a is followed the drain pipe is arranged to the outside of box 10. Through setting up above-mentioned drainage structures, can make the rainwater that falls into in mounting groove 10a pass through the drain pipe discharge box 10 outside as early as possible, avoid ponding in mounting groove 10a, drying device only need dry mounting groove surface water layer can.
The specific composition structure, installation mode and working principle of other parts of the automatic rain-sheltering dust fall detection device are specifically described below.
< sampling unit 20>
Fig. 3 shows a specific embodiment of the sampling unit 20, wherein the lower side of the dust collecting cylinder 201 is connected to the top wall of the box 10, the top wall of the box 10 is provided with a sampling hole, the lower end of the dust collecting cylinder 201 is provided with a lofting nozzle 2011, and the lofting nozzle 2011 is hermetically connected to the sampling hole.
The wall of the dust collecting cylinder 201 is further provided with a first distilled water inlet 2012 and a first glycol inlet 2013 which are respectively communicated with a distilled water supply device and a glycol supply device.
The last liquid level detection switch 2014 and the lower liquid level detection switch 2015 that sets up of collection dirt jar 201 for detect the liquid level in the collection dirt jar 201.
In order to avoid the liquid in the dust collecting cylinder 201 from freezing in winter, the heating device 202 is arranged on the cylinder wall of the dust collecting cylinder 201, and the structure of the heating device 202 is not exclusive, and can be a heating film or a heating wire wound on the cylinder wall.
The outer side of the dust collecting cylinder 201 is further provided with a protective cover 203, the protective cover 203 can prevent the first distilled water inlet 2012 and the first glycol inlet 2013 on the dust collecting cylinder 201 from entering dust to cause the problem of inaccurate detection result, and has a certain heat preservation effect on the other hand, so that the dust collecting cylinder 201 is rapidly heated.
The lower side of the rain cover 601 is provided with a flushing nozzle 90, and the flushing nozzle 90 is used for flushing the side wall of the dust collecting cylinder 201, so that the dust attached to the side wall of the dust collecting cylinder 201 falls into the glycol distilled water solution. The flushing nozzle 90 is a conical nozzle, high-pressure water sprayed along the conical nozzle can quickly wash dust on the wall of the dust collecting cylinder 201, and the dust fall detection precision is further improved.
< constant weight heating Unit 30>
As shown in fig. 3, the constant weight heating unit 30 includes a beaker 301, a beaker heating means 302, a chamber heating means 303, and the beaker driving means 304. Wherein the beaker 301, the beaker heating device 302 and the chamber heating device 303 are positioned in the first chamber 101 in the box body 10.
Specifically, beaker 301 is located lofting mouth 2011 downside of collection jar 201, the pipette 80 is established to the cover in lofting mouth 2011, be equipped with ooff valve 801 on the pipette 80, work as after collection cycle of collection jar 201, control ooff valve 801 is opened, and the dirty solution of collecting in the collection jar 201 then follows the pipette 80 gets into in the beaker 301. The beaker heating device 302 is used for heating the beaker 301, and the chamber heating device 303 is used for heating the first chamber 101. The first chamber 101 can be heated by the chamber heating device 303, so that the first chamber 101 is prevented from forming condensed water due to the low temperature of the chamber when the beaker 301 is heated by the beaker heating device 302, and finally, the weighing accuracy is affected due to the high humidity of dust in the beaker 301.
The side wall of the first chamber 101 is further provided with a second distilled water inlet 106 and a second glycol inlet 107, and the second distilled water inlet 106 and the second glycol inlet 107 are positioned at the upper side of the beaker 301 and are used for supplying the ethylene glycol aqueous solution to the beaker 301 so as to realize the measurement of the blank sample.
In order to realize automatic monitoring and measurement of the apparatus, the beaker 301 is driven and supported by the beaker driving apparatus 304, as shown in fig. 7, the beaker driving apparatus 304 includes a beaker bracket 3041, a first supporting rod 3042, a first rotating motor 3043 and a first lifting motor 3044; the beaker holder 3041 is configured to support the beaker 301, and specifically, to implement automatic collection measurement in multiple collection cycles, the beaker holder 3041 includes multiple holder stations, for example, 4 holder stations, each of which is configured to support one beaker 301; the bracket station is of a semicircular structure, the cup opening of the beaker 301 is provided with an outer edge, and the beaker 301 is hung on the bracket station through the outer edge positioned on the cup opening; the first support bar 3042 is configured to support the beaker bracket 3041, and the first rotating motor 3043 is configured to drive the first support bar 3042 to rotate so as to switch the beaker 301 between a heating station and a weighing station; the first lifting motor 3044 is used to drive the first support rod 3042 to lift and lower to place the beaker 301 on the weighing platter 401 or separate from the weighing platter 401.
After the heating of the beaker 301 located on the beaker heating device 302 is completed, the first rotating motor 3043 drives the first support rod 3042 to rotate so as to transfer the beaker 301 to the position located on the upper side of the weighing tray 401, at this time, the first lifting motor 3044 drives the first support rod 3042 to descend so as to drop the beaker 301 onto the weighing tray 401, and the first support rod 3042 continues to descend so as to separate the beaker 301 from the beaker bracket 3041, thereby completing the weighing operation of the beaker 301.
More specifically, the first rotating electric machine 3043 is located at a lower end of the first support rod 3042; the first lifting motor 3044 is connected to the first support bar 3042 through a first linear guide 3045, and the first linear guide 3045 can make the linear motion of the first support bar 3042 more stable.
The beaker heating device 302 is specifically a heating plate mounted on the bottom wall of the first chamber 101, and the heating plate heats the beaker 301 in an electromagnetic heating manner; the structure of the chamber heating means 303 is not exclusive; in one embodiment, the chamber heating device 303 is a heater or a heating fan installed in the first chamber 101; this way, the space is occupied, and for this reason, in another embodiment, the chamber heating device 303 is a heating plate or a heating film attached to the side wall of the first chamber 101, and more specifically, the heating plate may be installed on one or more side walls of the first chamber 101.
< weighing cell 40>
As shown in fig. 3 and 8, the weighing unit 40 includes a weighing pan 401 and a load cell 402, and the load cell 402 is connected to the weighing pan 401 through a weighing rod 405. The weighing tray 401 is located in the first chamber 101, after moisture in the beaker 301 evaporates, the beaker driving device 304 drives the beaker 301 to be transferred to the weighing tray 401 also located in the first chamber 101 for weighing, so that high-temperature weighing of dustfall is realized, and the problem of inaccurate weighing caused by moisture absorption of the beaker 301 in different chamber transfer processes is avoided.
The lower side of the weighing unit 40 is provided with a vibration isolation device, the vibration isolation device passes through the through hole in the bottom wall of the box body 10 and is installed on the ground positioned on the lower side of the box body 10, and the vibration isolation device is isolated from the box body 10. Because the vibration isolation device is directly arranged on the ground and is isolated from the box body 10 of the dust fall monitoring device, the influence of the box body vibration on the weighing unit can be effectively isolated, and the weighing accuracy is greatly improved.
Specifically, the vibration isolation device includes a fixed base 403, and a vibration isolation base 404 fixedly connected to the fixed base 403, and the load cell 402 is mounted on an upper surface of the vibration isolation base 404. The fixing base 403 penetrates through the through hole in the bottom wall of the box body 10 and is arranged in a manner of not contacting with the box body 10, so that the vibration of the box body 10 is prevented from being transmitted to the weighing unit 40, and the weighing accuracy is higher.
The fixed base 403 includes a bottom plate 4031 connected to a horizontal ground, a first column 4032 perpendicular to the bottom plate 4031, and a first connecting plate 4033 at an upper end of the first column 4032.
The vibration isolation mount 404 includes a second connecting plate 4041 for connecting with the first connecting plate 4033, a second upright 4042 on the upper side of the second connecting plate 4041, and a first vibration isolation plate 4043 and a second vibration isolation plate 4044 on the upper side of the second upright 4042; the first vibration isolating plate 4043 is connected to the second upright post 4042, and the load cell 402 is disposed on the second vibration isolating plate 4044. The first vibration isolation plate 4043 and the second vibration isolation plate 4044 are arranged in parallel, the first vibration isolation plate 4043 and the second vibration isolation plate 4044 are isolated by an elastic isolation column 4045, a leveling bolt 4046 penetrates through the first vibration isolation plate 4043, the second vibration isolation plate 4044 is horizontally arranged by adjusting the leveling bolt 4046, and the horizontal arrangement of the weighing sensor 402 is further obtained.
In order to prevent the heat of the first chamber 101 from transferring to the load cell 402 during the constant weight heating process, an insulation column 406 is disposed on the lower side of the weighing rod 405, and the insulation column 406 can insulate the heat transfer of the weighing rod 405 to ensure that the operating temperature of the load cell 402 is not affected.
< supply Unit 50>
The supply unit 50 includes a distilled water supply device and a glycol supply device; as shown in fig. 3 and 9, the distilled water supply means includes a distilled water container 501, and a first distilled water supply pump 503 and a second distilled water supply pump 504 communicated with the distilled water container 501, the first distilled water supply pump 503 is used for supplying distilled water to the dust collection tub 201, and the second distilled water supply pump 504 is used for supplying distilled water to the beaker 301; the glycol supply device comprises a glycol container 502, and a first glycol supply pump 505 and a second glycol supply pump 506 which are communicated with the glycol container 502, wherein the first glycol supply pump 505 is used for supplying glycol solution to the dust collecting cylinder 201, and the second glycol supply pump 506 is used for supplying glycol solution to the beaker 301.
The distilled water supply apparatus further includes a third distilled water supply pump 507 connected to the distilled water container 501, and the third distilled water supply pump 507 is used to supply distilled water to the flushing nozzle 90. Wherein the third distilled water supply pump 507 is a high-pressure water pump.
< arrangement of the chamber heating means 303, the weighing unit 40 and the supply unit 50 in the cabinet 10 >
As shown in fig. 3, the case 10 is partitioned into a first chamber 101 at an upper side and a second chamber 102 at a lower side by a first partition 104; the box 10 further includes a third chamber 103, and the third chamber 103 is separated from the first chamber 101 and the second chamber 102 by a second partition 105 disposed in the longitudinal direction.
The first support rod 3042 and the weighing rod 405 are disposed on the first partition 104 in a penetrating manner. In this way, in the constant-weight heating unit 30 and the weighing unit 40, the beaker 301, the beaker heating device 302, the chamber heating device 303, the beaker bracket 3041 and the weighing pan 401 are located in the first chamber 101, and the weighing sensor 402 and the first rotating motor 3043, the first lifting motor 3044 and the first linear guide 3045 of the beaker driving device 304 are located in the second chamber 102; by arranging part of the space of the box body 10 as the first chamber 101 and controlling the chamber heating device 303 to heat the first chamber 101 in the heating process of the beaker heating device 302, the moisture in the beaker 301 is quickly evaporated, so that the phenomenon that the humidity of dust in the beaker 301 is high and the weighing accuracy is influenced due to the fact that the first chamber 101 forms condensed water because the temperature of the chamber is low when the beaker 301 is heated only by the beaker heating device 304 is avoided; after the moisture in the beaker 301 is evaporated, the beaker driving device 304 drives the beaker 301 to be transferred to the weighing tray 401 which is also positioned in the first chamber 101 for weighing, so that the high-temperature weighing of the dustfall is realized, and the problem of inaccurate weighing caused by the fact that the beaker absorbs the moisture in the beaker in the transferring process of different chambers is avoided.
The first chamber 101 is communicated with the outside of the box body 10 through an exhaust duct 108, and an exhaust fan (not shown in the figure) is arranged in the exhaust duct 108; the water vapor generated when heating the beaker 301 can be rapidly exhausted to the outside of the case 10 through the exhaust duct 108, leaving the first chamber 101 in a drier environment.
Specifically, the exhaust duct 108 is located within the second chamber 102; the exhaust duct 108 is disposed in an L-shaped configuration, the upper end of the exhaust duct 108 is hermetically connected to the first partition 104, and the lower end of the exhaust duct 108 is connected to the sidewall of the second chamber 102.
In the above supply apparatus, a distilled water container 501 and a glycol container 502 are disposed in the second chamber 102, and the first distilled water supply pump 503, the second distilled water supply pump 504, the first glycol supply pump 505, the second glycol supply pump 506, and the third distilled water supply pump 507 are disposed in the third chamber 103.
A first heating device 1021 is arranged in the second chamber 102, and the first heating device 1021 is used for heating the second chamber 102 to enable the temperature of the chamber to be matched with the working temperature of the weighing sensor 402; meanwhile, the distilled water container 501 and the glycol container 502 are prevented from being frozen; a second heating device 1031 and a heat dissipation device 1032 are arranged in the third chamber 103; the second heating device 1031 is used for heating the third chamber 103 to prevent each pump body from freezing, and the heat sink 1032 is used for dissipating heat when the temperature in the third chamber 103 is too high.
The working process and the working principle of the vibration-isolated dust fall monitoring device are as follows:
before sampling, the first distilled water supply pump 503 and the first glycol supply pump 505 add a fixed amount of glycol and distilled water into the dust collecting tank 201, the second lifting motor 603 and the second rotating motor 604 in the rain shielding device 60 are turned on, the rain shielding cover 601 moves into the groove at the top of the box 10, and sampling starts.
During sampling, the on-off valve 801 on the pipette 80 is closed. The rain and snow sensor 70 detects the rainfall or snowfall during the sampling process, and if the rainfall or snowfall is detected, the rain shielding device 60 controls the rain shielding cover 601 to shield the dust collecting cylinder 201. The rain cover 601 is opened after the rainfall is finished.
Determination of blank: in the sampling process, the second distilled water supply pump 504 and the second ethylene glycol supply pump 506 are controlled to add the same amount of ethylene glycol aqueous solution as that in the dust collecting cylinder 201 into the beaker 301, and the weight of the blank value is obtained by concentration and constant weight weighing. The concentration constant weight process is specifically that the beaker driving device 304 falls the beaker 301 onto the beaker heating device 302 for heating and concentration. At the same time, the chamber heating device 303 is turned on to keep the temperature of the first chamber 101 constant at 105 ℃. And controlling an exhaust fan in the exhaust duct 108 to be opened, and exhausting the steam generated during concentration to the outside of the box body 10 through the exhaust duct 108. After the sample in the beaker 301 is evaporated to dryness, the beaker driving device 304 transfers the beaker 301 to the upper part of the weighing tray 401, and after a certain time of constant weight, the beaker 301 falls onto the tray to be weighed to obtain a first weight value.
And (3) measuring a dustfall sample: after the sampling period is finished, the rain cover 601 is controlled to close the dust collecting cylinder 201, the third distilled water supply pump is started, and the flushing nozzle 90 flushes the inner wall of the dust collecting cylinder 201. After the flushing is completed, the on-off valve 801 is opened and the sample is transferred along the pipette 80 into the beaker 301. The beaker driving device 304 drops the beaker 301 onto the beaker heating device 302 for heating and concentrating. At the same time, the chamber heating device 303 is turned on to keep the temperature of the first chamber 101 constant at 105 ℃. And controlling an exhaust fan in the exhaust duct 108 to be opened, and exhausting the steam generated during concentration to the outside of the box body 10 through the exhaust duct 108. After the sample in the beaker 301 is evaporated to dryness, the beaker driving device 304 transfers the beaker 301 to the upper part of the weighing tray 401, and after a certain time of constant weight, the beaker 301 falls onto the tray to be weighed to obtain a second weight value.
And subtracting the first weight value from the second weight value to obtain the atmospheric dust weight value in the sampling period.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides an automatic dust fall detection device who hides rain which characterized in that includes:
the top of the box body is provided with a rain and snow sensor for monitoring rain and snow;
the sampling unit is positioned on the outer side of the box body and comprises a dust collecting cylinder for collecting atmospheric dustfall, and the top end of the dust collecting cylinder is positioned on the outer side of the box body and has a set distance with the top wall of the box body;
the rain shielding device comprises a rain shielding cover and a rain shielding cover driving mechanism, wherein the rain shielding cover is used for shielding the dust collecting cylinder in rainy and snowy weather, the rain shielding cover driving mechanism drives the rain shielding cover to be switched between a non-shielding station and a shielding station, and when the rain shielding cover is in the non-shielding station, the rain shielding cover is positioned in the mounting groove of the top wall of the box body; when the rain and snow sensor detects rain and snow weather, the rain cover driving mechanism drives the rain cover to be lifted to the position which is matched with the dust collecting cylinder and then rotated to cover the dust collecting cylinder, and the rain cover is positioned at a shielding station.
2. The automatic rain shelter, dust fall detection device according to claim 1, wherein the rain cover drive mechanism comprises:
a second support bar for supporting the rain cover;
the second lifting motor is used for driving the second supporting rod to lift;
and the second rotating motor is used for driving the second supporting rod to rotate.
3. The automatic rain shelter dust fall detection device according to claim 2, wherein the second lifting motor and the second rotating motor are located inside the box body, the second support rod is arranged on the box body in a penetrating mode, at least two stages of telescopic rods are sleeved outside the second support rod, the telescopic rod located on the uppermost side is connected with the top of the second support rod, and the bottom of the telescopic rod located on the lowermost side is connected with the box body through a flange.
4. The automatic rain shelter dust fall detection device according to claim 3, wherein the box body is provided with a sinking platform, the sinking platform is positioned on the lower side of the installation groove, and the flange is installed on the upper surface of the sinking platform.
5. The automatic rain shelter dust fall detection device according to claim 3, wherein the outer diameter of the telescopic rod on the lower side is smaller than the outer diameter of the telescopic rod on the upper side.
6. The automatic rain-sheltering dust-fall detection device according to any one of claims 3 to 5, characterized in that the rain-sheltering cover comprises a rain-sheltering cover body and a rain-sheltering cover connecting arm connected to the rain-sheltering cover body, the second support rod is connected with the rain-sheltering cover connecting arm through an adapter, and the uppermost telescopic rod is connected with the second support rod through the adapter.
7. The automatic rain shelter dust fall detection device according to claim 4, wherein the box body comprises a box body and a box cover, the installation groove is formed in the top wall of the box cover, the sinking platform is formed on the box body, and a through hole for penetrating the second support rod and the telescopic rod is formed in the installation groove.
8. The automatic rain-sheltering dust fall detection device according to claim 1, wherein a first water discharge port is arranged in the mounting groove, a second water discharge port is arranged on the lower side of the box body, a water discharge pipe is arranged between the first water discharge port and the second water discharge port, and accumulated water in the mounting groove is discharged to the outer side of the box body along the water discharge pipe.
9. The automatic rain-sheltering dust fall detection device according to claim 1, further comprising a constant weight heating unit and a weighing unit located inside the box body;
the constant-weight heating unit comprises at least one beaker, a beaker heating device, a chamber heating device and a beaker driving device, the beaker heating device and the chamber heating device are positioned in a first chamber in the box body, and the at least one beaker is communicated with the dust collecting cylinder through a pipette; the beaker heating device is used for heating the beaker, the chamber heating device is used for heating the first chamber, and the beaker driving device is used for driving the beaker to be transferred to the beaker heating device;
the weighing unit comprises a weighing disc and a weighing sensor which are connected through a weighing rod, the weighing disc is located in the first cavity, and the beaker driving device is further used for driving the beaker to be transferred onto the weighing disc.
10. The automatic rain sheltering dust fall detection device according to claim 9, wherein the beaker driving device comprises a beaker bracket, a first support rod, a first rotating motor and a first lifting motor; the beaker bracket is used for supporting the beaker, the first supporting rod is used for supporting the beaker bracket, and the first rotating motor is used for driving the first supporting rod to rotate so as to enable the beaker to be converted from a heating station to a weighing station; the first lifting motor is used for driving the first supporting rod to lift so as to place the beaker on the weighing tray or separate the beaker from the weighing tray.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117804952A (en) * | 2023-12-26 | 2024-04-02 | 浙江恒达仪器仪表股份有限公司 | Atmospheric dust fall automatic monitoring system based on double-cylinder storage |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010113521A1 (en) * | 2009-04-01 | 2010-10-07 | 新日本製鐵株式会社 | Horizontal component catcher of dustfall in atmosphere and measuring method of horizontal component |
| CN203929450U (en) * | 2014-04-10 | 2014-11-05 | 齐齐哈尔大学 | Atmospheric falling dust automatic sampling apparatus |
| CN206181203U (en) * | 2016-11-29 | 2017-05-17 | 芜湖赋兴光电有限公司 | Camera that self preservation protected |
| CN110017864A (en) * | 2019-04-11 | 2019-07-16 | 珠海高凌信息科技股份有限公司 | A kind of fugitive dust monitor |
| CN209692142U (en) * | 2019-05-05 | 2019-11-26 | 安徽宝光特钢集团万里电力铁塔有限公司 | A kind of steel tube tower lightning protection sensing device |
| CN209944192U (en) * | 2019-05-13 | 2020-01-14 | 宝典电气集团有限公司 | Protective bracket for street lamp installation |
| CN111678743A (en) * | 2020-05-22 | 2020-09-18 | 北京市环境保护科学研究院 | Continuous automatic monitoring system for dust fall of ambient air and control method thereof |
| CN112113886A (en) * | 2020-03-17 | 2020-12-22 | 上海澜昶电子科技有限公司 | Automatic dust fall monitor |
| CN112161899A (en) * | 2020-07-30 | 2021-01-01 | 上海绿蒂智能科技有限公司 | Dust fall measuring instrument and measuring method thereof |
-
2021
- 2021-06-08 CN CN202110634673.2A patent/CN113252503B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010113521A1 (en) * | 2009-04-01 | 2010-10-07 | 新日本製鐵株式会社 | Horizontal component catcher of dustfall in atmosphere and measuring method of horizontal component |
| CN203929450U (en) * | 2014-04-10 | 2014-11-05 | 齐齐哈尔大学 | Atmospheric falling dust automatic sampling apparatus |
| CN206181203U (en) * | 2016-11-29 | 2017-05-17 | 芜湖赋兴光电有限公司 | Camera that self preservation protected |
| CN110017864A (en) * | 2019-04-11 | 2019-07-16 | 珠海高凌信息科技股份有限公司 | A kind of fugitive dust monitor |
| CN209692142U (en) * | 2019-05-05 | 2019-11-26 | 安徽宝光特钢集团万里电力铁塔有限公司 | A kind of steel tube tower lightning protection sensing device |
| CN209944192U (en) * | 2019-05-13 | 2020-01-14 | 宝典电气集团有限公司 | Protective bracket for street lamp installation |
| CN112113886A (en) * | 2020-03-17 | 2020-12-22 | 上海澜昶电子科技有限公司 | Automatic dust fall monitor |
| CN111678743A (en) * | 2020-05-22 | 2020-09-18 | 北京市环境保护科学研究院 | Continuous automatic monitoring system for dust fall of ambient air and control method thereof |
| CN112161899A (en) * | 2020-07-30 | 2021-01-01 | 上海绿蒂智能科技有限公司 | Dust fall measuring instrument and measuring method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117804952A (en) * | 2023-12-26 | 2024-04-02 | 浙江恒达仪器仪表股份有限公司 | Atmospheric dust fall automatic monitoring system based on double-cylinder storage |
| CN117804952B (en) * | 2023-12-26 | 2024-08-30 | 浙江恒达仪器仪表股份有限公司 | Atmospheric dust fall automatic monitoring system based on double-cylinder storage |
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