CN211504859U - Multi-azimuth dust-settling sampler - Google Patents
Multi-azimuth dust-settling sampler Download PDFInfo
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- CN211504859U CN211504859U CN201922156069.4U CN201922156069U CN211504859U CN 211504859 U CN211504859 U CN 211504859U CN 201922156069 U CN201922156069 U CN 201922156069U CN 211504859 U CN211504859 U CN 211504859U
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Abstract
The utility model discloses a multi-azimuth dust fall sampler, which comprises a dust cover, a first cloud deck, a dust collecting cylinder base and at least two dust collecting cylinders; the at least two dust collecting cylinders are uniformly distributed on the dust collecting cylinder base along the circumferential direction of the dust collecting cylinder base; the dustproof cover is fixedly connected with the first cloud deck and is driven to rotate through the rotation of the first cloud deck; the dust cover is provided with an opening, and when the first holder drives the dust cover to rotate, the opening of the dust cover is positioned right above the selected dust collecting cylinder. The utility model discloses a diversified dust fall sample thief can collect the dust fall according to meteorological condition autosegregation such as real-time wind direction and wind speed, realizes autosegregation and collects the dust fall in quiet wind and branch position, guarantees the accuracy of collecting the result, traces to the source monitoring for the dust fall of city ambient air monitoring point or focus net region and provides the guarantee on the equipment.
Description
Technical Field
The utility model relates to an atmospheric environment monitors the field, especially relates to a diversified dust fall sample thief.
Background
The dust fall sampler in the prior art can be used for measuring the settleable particles in the ambient air, and the obtained measurement result can be used as the basis for evaluating the quality of the atmospheric environment.
The dust fall measuring method specified in GB/T15265-94 'gravimetric method for measuring dust fall in ambient air' in China is a wet collection method, and the working principle is as follows: the particles which can be settled in the air are settled in a dust collecting tank which is filled with glycol aqueous solution as collecting liquid, and the dust reducing amount is calculated after evaporation, drying and weighing. The dust collecting cylinder is a cylindrical glass cylinder with the inner diameter (15 +/-0.5) cm and the height of 30cm, and the bottom of the cylinder is smooth. The dustfall monitoring period is (30 +/-2) d, and the time for replacing the cylinder is specified to be completed within 5d of the moon bottom. The dust collecting cylinder is placed to be 5-12 m away from the ground, if the dust collecting cylinder is placed on a roof platform, the collecting opening is placed to be 1-1.5 m away from the platform, and therefore the influence of raised dust of the platform is avoided.
The above principle that China must follow to develop dust fall monitoring is adopted, but the existing dust fall measuring method has some defects, such as: firstly, the pollution characteristics of the short-time sand storm are not easy to identify due to the long monitoring period; secondly, dry and wet dust reduction amount cannot be distinguished; thirdly, the dustfall sample is easily polluted by bird droppings, mosquitoes, fallen leaves and the like; and fourthly, the consistency of the sample changing time cannot be ensured. In order to solve the defects, domestic scholars make some improvements aiming at a dust fall determination method, and the specific conditions are as follows:
CN101013070A discloses a rainfall and dustfall time-sharing multifunctional full-automatic sampler which can sample rainwater, sand storm dustfall and daily dustfall in time-sharing or timing mode. There is the confined upper cover at the box top of sample thief, the upper cover is being inlayed a cylinder near limit portion and is being collected the mouth, still be equipped with a rotatory tray that is driven by drive mechanism at the box middle part, rotatory tray top evenly sets up a plurality of collection cup seats and collects the cup along the circumference, rainwater or dust fall get into through collecting the mouth and collect the cup, make the tray rotatory full-automatic trade appearance of time quantum that can realize the time quantum through the conveyer belt, can gather the rainwater in succession automatically when raining, can gather the atmosphere dust fall of different time quantums in succession automatically when not raining. The sampler can collect dry and wet dust fall samples respectively, and can improve the time resolution of separate collection of sand storm dust fall samples; however, the size of the collecting opening and the connecting design of the collecting opening and the collecting cup is different from that of the dust collecting cylinder required by GB/T15265-94, the aerodynamic behavior of particle sedimentation is influenced, and dustfall adhered to the inner wall of the collecting opening cannot enter the collecting cup.
CN204359560U discloses diversified dust fall sample thief of multi-functional atmosphere sets up two dust fall collection tanks side by side in the box, and the top is equipped with the upper cover that can remove to cover in two collection tank tops, through opening and shutting of the nylon rope control collection tank that is linked with the motor, automatic acquisition rainwater when can raining again, closes the collection of subsiding the sample futilely simultaneously, carries out the collection of subsiding the sample futilely automatically when rain stops back atmospheric humidity and satisfies the sampling condition. The patent can separate dry and wet settlement samples, but cannot analyze the direction of a pollution source of dust fall.
CN205879608U discloses an atmospheric dust-fall sampling device, wherein a sealing cover is arranged on a support at the top end of a box body, the bottom end of a funnel in the support is connected with an inverted funnel through a rubber pipe, and the inverted funnel can collect settled dust fall into a collecting bottle; however, the sampling method is different from the requirement of GB/T15265-94, and the method cannot be used as the mainstream method for monitoring the dustfall at present.
CN207095923U discloses an automatic dust-settling sampling device, which is provided with a set of parallel dust-settling cylinders in the sampling device in addition to two parallel dust-settling cylinders being collected, so that punctual and standard-point automatic sample change can be realized, and the consistency of the collected samples in time is ensured; however, only one set of spare dust settling cylinder is arranged in the dust settling cylinder, manual sampling is required after automatic sample replacement is realized each time, the requirement of long-term sampling cannot be met, and the direction of a dust settling pollution source cannot be analyzed.
In conclusion, the existing dust-fall sampler cannot obtain the azimuth data of the pollution source and cannot provide technical support for the accurate treatment of the pollution source, so that the research and development of a multi-azimuth dust-fall sampler capable of quantifying the azimuth and the influence degree of the pollution source are urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a diversified dust fall sample thief, its diversified dust fall sample thief according to environment wind direction and the fast autosegregation of wind collect different position pollution sources dust fall.
The utility model provides a technical problem adopt following technical scheme: a multi-azimuth dust fall sampler comprises a dust cover, a first cloud deck, a dust collecting cylinder base and at least two dust collecting cylinders;
the at least two dust collecting cylinders are uniformly distributed on the dust collecting cylinder base along the circumferential direction of the dust collecting cylinder base;
the dustproof cover is fixedly connected with the first cloud deck and is driven to rotate through the rotation of the first cloud deck;
the dust cover is provided with an opening, and when the first holder drives the dust cover to rotate, the opening of the dust cover is positioned right above the selected dust collecting cylinder.
Optionally, the multi-azimuth dust-fall sampler further comprises a second cloud deck, and the dust collecting cylinder base is fixed on the upper portion of the second cloud deck and is driven to rotate by the rotation of the second cloud deck;
the second holder drives the first holder thereon to rotate.
Optionally, the opening is sized to allow only one of the dirt collection cylinders to be located entirely directly below the opening.
Optionally, the dustproof cover is circular, and the outer edge of the dustproof cover is bent downwards to form a flanging structure; the lower end of the flanging structure is lower than the edge opening of the dust collecting cylinder so as to shield the dust collecting cylinder through the dust cover.
Optionally, the collecting cylinder base comprises a multi-petal chassis, a plurality of collecting cylinder frames are uniformly distributed on the multi-petal chassis around the center of the multi-petal chassis, and one collecting cylinder is placed in each collecting cylinder frame.
Optionally, the dust cover and the middle shaft rod are coaxially arranged, the middle shaft rod is vertically arranged, and the first holder drives the middle shaft rod to drive the dust cover to rotate;
the second cloud platform and the dust collection cylinder base are coaxially arranged, the second cloud platform is arranged in the box body, the dust collection cylinder base is arranged outside the box body, is installed at the upper end of the second cloud platform and is driven by the second cloud platform to rotate;
the axes of the dust cover, the middle shaft rod, the first holder, the second holder and the dust collecting cylinder base are all on a vertical line.
Optionally, diversified dust fall sample thief still include environment wind direction anemoscope, instrument support frame, solar cell panel and control panel, wherein:
the environmental wind vane anemoscope is arranged on a vertical rod extending out of one side of the instrument support frame and used for testing the wind direction and the wind speed of the environment;
the instrument support frame is arranged on the ground or the platform and is used for supporting the box body;
the solar panel is used for supplying power to the multi-azimuth dust-settling sampler;
the control panel is positioned in the box body and used for providing a man-machine interaction control interface of the multi-azimuth dust-fall sampler.
Optionally, the first holder and the second holder are driven by a driving power supply, and the driving power supply is a solar cell panel, a storage battery pack and/or a mains supply.
The utility model discloses following beneficial effect has: diversified dust fall sample thief can collect the dust fall according to real-time wind direction and wind speed autosegregation through diversified dust fall sample thief, realizes that autosegregation collects the dust fall in quiet wind and branch position. Furthermore, the multi-azimuth dust fall sampler of the embodiment can work automatically for a long time without manual intervention, can avoid the interference of manual operation errors on dust fall collection, ensures the accuracy of collection results, and provides equipment guarantee for dust fall traceability monitoring of urban environment air monitoring points or hot grid areas.
Drawings
FIG. 1 is a schematic structural view of the multi-directional dust-settling sampler of the present invention;
FIG. 2 is a schematic view of a part of the structure of the multi-directional dust-settling sampler of the present invention;
FIG. 3 is a schematic view of a part of the structure of the multi-directional dust-settling sampler of the present invention;
the notation in the figures means: 1-a dust collecting cylinder; 2-a dust cover; 3-a first pan-tilt; 4-a middle shaft rod; 5-a dust collecting cylinder base; 6-a second pan-tilt; 7-box body.
Detailed Description
The technical solution of the present invention will be further explained with reference to the following embodiments and accompanying drawings.
Example 1
The embodiment provides a multidirectional dust fall sampler, which comprises a dust cover 2, a first cloud deck 3, a middle shaft rod 4, a dust collection cylinder base 5, a second cloud deck 6 and at least two dust collection cylinders 1;
the at least two dust collecting cylinders 1 are uniformly distributed on the dust collecting cylinder base 5 along the circumferential direction of the dust collecting cylinder base 5; the at least two dust collecting cylinders 1 not only comprise all azimuth dust collecting cylinders, but also comprise a calm wind azimuth dust collecting cylinder.
The dustproof cover 2 is fixedly connected with the first cloud platform 3 through the middle shaft rod 4, and the dustproof cover 2 is driven to rotate through the rotation of the first cloud platform 3.
The dust collecting cylinder base 5 is fixed on the upper part of the second cloud deck 6, and the dust collecting cylinder base 5 is driven to rotate by the rotation of the second cloud deck 6.
The second cloud platform 6 drives the first cloud platform 3 to rotate, after the target position to which the dust collection cylinder 1 needs to move is confirmed according to the wind direction, the first cloud platform 3 and/or the second cloud platform 6 are controlled to rotate, the target dust collection cylinder and the dust cover 2 are moved to the preset position, and openings of the target dust collection cylinder and the dust cover coincide with the wind direction.
In this embodiment, the dust cover 2 is circular, and the outer edge is bent downward to form a flanging structure; the lower end of the flanging structure is lower than the edge of the dust collecting cylinder 1 so as to shield the dust collecting cylinder 1 through the dust cover 2. And the dust cap 2 is opened with an opening and the opening is sized to allow only one of the dust cylinders 1 to be completely positioned right under the opening. That is, in this embodiment, the areas of the dust caps 2 and the openings can be changed according to the number of the dust collecting cylinders 1, so that only the area of the cylinder opening of one dust collecting cylinder 1 can be exposed at the exposed part, and the dustfall when only one wind direction or dead wind (less than or equal to 0.2m/s) is collected at the same time can be ensured.
The dust collecting cylinder base 5 comprises a multi-petal chassis, a plurality of dust collecting cylinder frames are uniformly distributed on the multi-petal chassis around the center of the multi-petal chassis, and one dust collecting cylinder is placed in each dust collecting cylinder frame; the multi-lobe structure of the chassis can reduce the weight and the loss of the second holder 6 during rotation.
The dustproof cover 2 and the middle shaft lever 4 are coaxially arranged, the middle shaft lever 4 is vertically arranged, and the middle shaft lever is driven by the first holder 3 to drive the dustproof cover to rotate;
the second cloud platform 6 and the dust collection cylinder base 5 are coaxially arranged, the second cloud platform 6 is arranged in the box body 7, the dust collection cylinder base 5 is arranged outside the box body 7, is installed at the upper end of the second cloud platform 6 and is driven to rotate by the second cloud platform 6;
the axes of the dust cover 2, the middle shaft lever 4, the first holder 3, the second holder 6 and the dust collecting cylinder base 5 are all on a vertical line.
In this embodiment, diversified dust fall sample thief still includes environment wind direction anemoscope, instrument support frame, solar cell panel and control panel, wherein:
the environmental wind vane anemoscope is arranged on a vertical rod extending out of one side of the instrument support frame and used for testing the wind direction and the wind speed of the environment;
the instrument supporting frame is arranged on the ground or a platform and is used for supporting the box body 7;
the solar cell panel can supply power for the multi-azimuth dust-settling sampler and also can charge a storage battery pack;
the control panel is located in the box body and used for providing a human-computer interaction control interface of the dust fall sampler.
The first cloud platform 3 and the second cloud platform 6 are driven by a driving power supply, and the driving power supply is a solar cell panel, a storage battery pack and/or a mains supply.
The diversified dust fall sample thief of this embodiment is when using, every time corresponds the wind direction the collection dirt jar all just is to the arrival of wind for every the dust fall that the collection dirt jar was collected subsides from the air and obtains, has avoided the wind direction to follow the shield blows and takes the dust of covering to fall into the collection dirt jar causes sampling error.
From this, the diversified dust fall sample thief of this embodiment through environment wind direction anemoscope, can record meteorological data such as wind direction wind speed in real time to according to real-time wind direction and wind speed, realize the dust fall when autosegregation collects each wind direction and calm wind. And the dust collecting cylinder corresponding to the wind direction is over against the wind direction every time, so that the dustfall collected by each dust collecting cylinder is obtained by sedimentation from the air, and the phenomenon that the wind direction blows from the cover to bring the dust on the cover to fall into the dust collecting cylinder to cause sampling errors is avoided.
The multi-azimuth dust fall sampler of the embodiment can rotate the dust collection cylinder to the corresponding wind direction position in the shortest time by controlling the forward rotation and the reverse rotation of the first cloud platform and the second cloud platform, and the rotation is not more than 180 degrees at most. Rotate first cloud platform and shield at every turn, rotate the fine setting that the second cloud platform realized the collection dirt jar angle again, of course, first cloud platform and second cloud platform also can rotate simultaneously for reaction time and rotation time shorten, improve the precision that the wind direction was distinguished, reduce the instrument loss.
Specifically, in actual use, the following are set: the static wind is 0 dust collecting cylinder and is arranged at 0 degree. The angle of the central line of each dust collecting cylinder is different by 72 degrees; the four dust collecting cylinders for collecting the north, east, south and west directions are No. 1-4 dust collecting cylinders respectively; no. 0-5 dust collecting cylinder corresponds angle respectively: 0 °, 72 °, 144 °, 216 °, 288 °.
Therefore, the working angle and the wind direction corresponding to each dust collecting cylinder are specifically as follows:
number 0 dust collecting cylinder: 0 ° (calm wind);
no. 1 dust collecting cylinder: 72 ° (north);
no. 2 dust collecting cylinder: 144 ° (east);
no. 3 dust collecting cylinder: 216 ° (south);
no. 4 dust collecting cylinder: 288 ° (west);
and (3) judging the wind direction and direction:
and (3) northern wind: 315 ° -45 ° (excluding 45 °);
dongfeng: 45 ° -135 ° (excluding 135 °);
south wind: 135 ° -225 ° (excluding 225 °);
west breeze: 225 ° -315 ° (excluding 315 °);
and (3) judging the wind direction and direction: 315 to 45 degrees of northern wind (No. 1 dust collecting cylinder); dongfeng 45-135 ° (No. 2 dust collecting cylinder); 135-225 degrees of south wind (No. 3 dust collecting cylinder); west breeze 225-315 ° (No. 4 dust collecting cylinder); + clockwise rotation, -counterclockwise rotation.
Wind direction and wind speed determination conditions: and judging for 1 time in the fastest 20s, obtaining the wind direction according to the instantaneous wind direction, and obtaining the wind speed according to the instantaneous wind speed.
(1) If the wind speed is >0.2m/s, then:
a. if the wind direction is still in the same area as the previous time, the wind direction does not need to be rotated;
b. if the wind direction is in the other area, the central line of the opening (72 degrees) of the dust cover rotates towards the wind direction, and the central line of the corresponding dust collection cylinder in the working state also rotates towards the wind direction until the central line of the corresponding dust collection cylinder is overlapped with the central line of the opening of the dust cover, namely the dust collection cylinder is in the middle position of the opening of the dust cover.
For example: when the wind speed is larger than 0.2m/s, the wind direction area is firstly positioned, and the required dust collecting cylinder is selected.
Assuming that the last time is judged to be calm wind, sampling is carried out by a No. 0 dust collecting cylinder; the current wind direction (the target wind direction in the adjustment process) is 267 degrees, belongs to the range of west wind (225-315 degrees), and a No. 4 dust collecting cylinder is selected for collection.
Calculate the current angle of the target cylinder: the angle of the target dust collecting cylinder is equal to the previous wind direction + (target dust collecting cylinder number-last dust collecting cylinder number) 72 degrees; that is, currently No. 4 dust collecting cylinders are in: 0+ (4-0) × 72 ° -288 °.
Calculating the rotation angle of the first holder: the rotation angle α of the first pan/tilt head is 72 ° (target-last collecting cylinder number). (if the rotation angle α is greater than 180 °, the reverse rotation angle α -360 °) is obtained
Calculating the rotation angle of the second holder: the rotation angle beta of the second cloud deck is equal to the target wind direction-the current angle of the target dust collecting cylinder; this embodiment is 267 ° -288 ° -21 °, i.e. the second head needs to rotate-21 °. (if the rotation angle β is greater than 180 °, the reverse rotation angle β -360 °) is obtained
(2) If the wind speed is less than or equal to 0.2m/s, then:
the first cloud platform and the second cloud platform rotate, make the axis of No. 0 collection jar be located 0, and make the open-ended central line of shield be located 0 orientation moreover.
The diversified dust fall sample thief of this embodiment can collect the dust fall according to real-time wind direction and wind speed autosegregation through diversified dust fall sample thief, realizes that autosegregation collects the dust fall of quiet wind and branch position. Furthermore, the multi-azimuth dust fall sampler of the embodiment can work automatically for a long time without manual intervention, can avoid the interference of manual operation errors on dust fall collection, ensures the accuracy of collection results, and provides equipment guarantee for dust fall traceability monitoring of urban environment air monitoring points or hot grid areas.
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. A multi-azimuth dust fall sampler is characterized by comprising a dust cover, a first cloud deck, a dust collection cylinder base and at least two dust collection cylinders;
the at least two dust collecting cylinders are uniformly distributed on the dust collecting cylinder base along the circumferential direction of the dust collecting cylinder base;
the dustproof cover is fixedly connected with the first cloud deck and is driven to rotate through the rotation of the first cloud deck;
the dust cover is provided with an opening, and when the first holder drives the dust cover to rotate, the opening of the dust cover is positioned right above the selected dust collecting cylinder.
2. The multi-azimuth dust sampler according to claim 1, further comprising a second stage, wherein the dust cylinder base is fixed on the upper part of the second stage and is driven to rotate by the rotation of the second stage;
the second holder drives the first holder thereon to rotate.
3. The multi orientation dust sampler of claim 1, wherein the opening of the dust cap is sized to allow only one of the dust collection cylinders to be completely positioned directly below the opening.
4. The multi-azimuth dust fall sampler according to claim 1, wherein the dust cover is circular, and the outer edge of the dust cover is bent downwards to form a flanging structure; the lower end of the flanging structure is lower than the edge opening of the dust collecting cylinder so as to shield the dust collecting cylinder through the dust cover.
5. The multi-azimuth dustfall sampler of claim 1, wherein the collection cylinder base comprises a multi-lobed chassis having a plurality of collection cylinder mounts evenly distributed about a center thereof, one of the collection cylinders being disposed within each collection cylinder mount.
6. The multi-azimuth dust fall sampler according to claim 2, wherein the dust cover and the middle shaft rod are coaxially arranged, the middle shaft rod is vertically arranged, and the first holder drives the middle shaft rod to drive the dust cover to rotate;
the second cloud platform and the dust collection cylinder base are coaxially arranged, the second cloud platform is arranged in the box body, the dust collection cylinder base is arranged outside the box body, is installed at the upper end of the second cloud platform and is driven by the second cloud platform to rotate;
the axes of the dust cover, the middle shaft rod, the first holder, the second holder and the dust collecting cylinder base are all on a vertical line.
7. The multi-azimuth dust fall sampler of claim 1, further comprising an ambient wind anemoscope, an instrument support frame, a solar panel and a control panel, wherein:
the environmental wind vane anemoscope is arranged on a vertical rod extending out of one side of the instrument support frame and used for testing the wind direction and the wind speed of the environment;
the instrument support frame is arranged on the ground or the platform and is used for supporting the box body;
the solar panel is used for supplying power to the multi-azimuth dust-settling sampler;
the control panel is positioned in the box body and used for providing a man-machine interaction control interface of the multi-azimuth dust-fall sampler.
8. The multi-azimuth dust fall sampler according to claim 2, wherein the first and second holders are driven by a driving power supply, the driving power supply being a solar panel, a storage battery and/or a mains supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922156069.4U CN211504859U (en) | 2019-12-05 | 2019-12-05 | Multi-azimuth dust-settling sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922156069.4U CN211504859U (en) | 2019-12-05 | 2019-12-05 | Multi-azimuth dust-settling sampler |
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| Publication Number | Publication Date |
|---|---|
| CN211504859U true CN211504859U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922156069.4U Active CN211504859U (en) | 2019-12-05 | 2019-12-05 | Multi-azimuth dust-settling sampler |
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|---|---|
| CN (1) | CN211504859U (en) |
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- 2019-12-05 CN CN201922156069.4U patent/CN211504859U/en active Active
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