JPS6326761Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a collection device that can collect suspended particulate matter in the air according to wind direction.

2. Description of the Related Art Conventionally, a device as shown in FIG. 1 has been known as a device for collecting suspended particulate matter in the air. That is, in FIG. 1, a is a suspended particulate matter sampler, b
is a suction pump, and c is a conduit that connects the sampler a and the suction pump b, with a flow meter d and a flow control valve e interposed therein, and air in the sampler a is sucked by the operation of the suction pump b, As a result, the collection section f of the sampler a where the paper is placed
Suspended particulate matter such as soot and dust in the air is sucked in and collected. Note that g in the figure is a sampler cover, and h and i are pressure gauges, respectively.

However, although this type of conventional collection device can measure the amount and type of suspended particulate matter in the entire area where the collection device is installed, it is not possible to determine which direction the collected material came from. It was not clear which direction most of the substances came from, and it was not possible to accurately analyze and clarify the state of their floating distribution.

The present invention was developed in view of the above circumstances, and it is possible to collect suspended particulate matter in the air by sorting it according to the wind direction. Not only can it measure the type of suspended particulate matter, but it can also measure the amount and type of suspended particulate matter depending on the direction of the area, making it possible to accurately analyze and clarify the floating distribution state of suspended particulate matter. The purpose of this invention is to provide a device for collecting airborne particulate matter by wind direction.

Hereinafter, one embodiment of the present invention will be described with reference to FIG.

A in Fig. 2 is the sampling section of this device, and this sampling section A is divided by wind direction, for example, north, east, south, and west, and has multiple units ( In the embodiment shown in FIG. 2, samplers 1a, 1b, 1c, and 1d for each suspended particulate matter wind direction (four in the example) are provided, and a wind vane 24, which will be described later, does not operate below a predetermined wind speed. Even if this wind vane points in a certain direction, there is no wind or light wind, so the actual wind direction cannot be measured by this wind vane. A no-wind sampler 2 and a control sampler 3 for constantly sampling regardless of wind direction or wind speed are provided. In addition, 4 in the figure indicates each sampler 1a to 1d,
2 and 3 suspended particulate matter collection section (filter section)
, paper, etc. are placed on each of them, and 5 is a sampler cover.

B is a flow rate control unit, which is connected to the sampler 1 for each wind direction mentioned above.
Solenoid valves (on-off valves) 6a-d and 7 are provided corresponding to the samplers a-d and the windless sampler 2, respectively, and the samplers 1a-d, 2 and the solenoid valve 6a
-d, 7 are connected by conduits 8a-d, 9, respectively. In addition, these solenoid valves 6a~
At the other ends of d and 7 are conduits 10a to 10d and 1, respectively.
1 are connected at one end, and these conduits 1
The other ends of Oa to d, 11 are all connected to the main pipe 12. Furthermore, the other end of this main pipe 12 is connected to a first suction pump 13, and the operation of this pump 13 causes the samplers 1a to 1a to correspond to any of the solenoid valves 6a to 6d, 7 in the open state to be activated.
Air is suctioned from the samplers 1a to 1d, 2, and external air is thereby suctioned from the lower side of the sampler cover 5 of the corresponding sampler 1a to 1d, 2 through the collecting section 4. In addition, the main pipe 1
2, a first pressure gauge 14, a flow meter 15, a second pressure gauge 16, and a flow control valve 17 are respectively installed.

Further, the control sampler 3 is connected to the control sampler 3 via a conduit 22 in which a first pressure gauge 18, a flow meter 19, a second pressure gauge 20, and a flow rate control valve 21 are respectively installed.
A second suction pump 23 is connected, and this pump 23
Air from the control sampler 3 is constantly sucked by the operation of the control sampler 3.

C is a detection part, in which a wind vane 24 and an anemometer 25 are respectively arranged, so that the wind direction and wind speed at the place where this collection device is installed are measured by these wind vane 24 and anemometer 25, respectively. It's summery. In addition, as the wind vane 24 and the anemometer 25,
Appropriate types such as photoelectric type, ultrasonic type, power generation type, etc. are used.

The anemometer 24 and the anemometer 25 are connected to a wind direction/wind speed converter 28 of the electric control unit D via connectors 26 and 27, respectively, and the wind direction is within a preset wind direction range (for example, in this embodiment, The wind direction is divided into four ranges: northwest to northeast (N), northeast to southeast (E), southeast to southwest (S), and southwest to northwest (W)), and the wind speed is the set wind speed. It is designed to detect whether the wind speed is above or below (the minimum wind speed at which the wind vane can operate), and depending on the wind direction and wind speed, the samplers 1a to d for each wind direction and the windless sampler 2 are Relay switches 30a-d, 31 in control box 29 are connected to correspondingly arranged solenoid valves 6a-d, 7 (in FIG. 2, these switches 30a-d, 31 are connected to box 28). Although it is illustrated as being external,
This is to make the diagram easier to understand, and is actually housed in box 28. ) is commanded to turn on, thereby closing the circuit of this switch and opening the solenoid valve connected to this switch.

That is, the output signal (measured wind speed) from the detection transmission mechanism of the anemometer 25 is sent to the converter 28, and the output voltage value is compared with the set value (set wind speed). ), if
The relay switch 31 is turned off, and an output signal from the detection transmitting mechanism of the wind vane 24 is sent to the converter 28, whereby the range of wind direction is detected, and the relay switches 30a to 30a are turned off according to the wind direction.
d is turned on, and when the output voltage value from the anemometer 25 is below the set value, the relay switches 30a to 30a for each wind direction are turned on.
d is turned off, and the other relay switches 31 are turned on.

In addition, 32a to 32d and 33 in the figure are hour meters, and the corresponding relay switch 3
The time that the solenoid valves 0a to 6d, 31 are in the on state, and therefore the time that the corresponding solenoid valves 6a to 6d, 7 are open, is integrated. Furthermore, 34 in the figure
is a recorder.

Next, when collecting suspended particulate matter in the vicinity where this device is installed using the suspended particulate matter collection device configured as described above, the first
and the second suction pumps 13 and 23 are both operated continuously, thereby collecting suspended particulate matter.

That is, the wind direction and wind speed at the location where the device is installed are measured by the anemometer 24 and the anemometer 25, respectively, and the wind direction and wind speed converter 28 sends a signal to one of the relay switches 30a to 30d, 31 of the control box 29 according to the wind direction and wind speed. A signal is transmitted to turn on the switch. For example, if the wind speed is higher than the minimum wind speed that can substantially operate the wind vane 24 and the wind direction is in the northwest to northeast range, the converter 2
A command is given from 8 to turn on the relay switch 30a, which closes the circuit, thereby opening the solenoid valve 6a (in this state, the other relay switches 30b, c, d, and 31 are in the OFF state). Therefore, corresponding solenoid valves 6b,
c, d and 7 are closed). Therefore, the first
The piston pump 13 has a main conduit 12 and a conduit 10a.
and 8a from the sampler 1a, so that outside air is drawn from the sampler 1a through
Floating particulate matter in the external air is collected only by this sampler 1a, and is collected in its collection section 4. Next, when the wind direction changes and is in the northeast or southeast range, the relay switch 30b is turned on, the solenoid valve 6b connected to it is opened, and the air from the sampler 1b is transferred to the first piston. While being sucked by the pump 13,
The relay switch 30a returns to the OFF state, thereby closing the solenoid valve 6a connected to the relay switch 30a, stopping the collection of suspended particulate matter in the external air by the sampler 1a, and removing the suspended particulate matter. It is collected only by sampler 1b. Furthermore, when the wind direction changes from southeast to southwest, the relay switch 30c is turned on and the solenoid valve 6c opens, and suspended particulate matter is collected by the sampler 1c. The relay switch 30d is turned on, the solenoid valve 30d is opened, and the suspended particulate matter is collected by the sampler 1d.

Additionally, when the wind speed becomes slower than the minimum wind speed for operating the anemometer 24, a command is given to turn on the relay switch 31, the solenoid valve 11 opens, and suspended particulate matter is collected only in the sampler 2. Then, the collection of suspended particulate matter by the wind direction samplers 1a to 1d is stopped.

In addition, in the process of collecting suspended particulate matter, the time during which each relay switch 30a to 30d, 31 is in the on state is determined by the hour meter 3 attached to each.
2a to 2d and 33 are integrated.

In addition to the above-described collecting mode of suspended particulate matter, suspended particulate matter is continuously collected by the control sampler 4 connected to the second suction pump 23 regardless of wind direction or wind speed.

Therefore, by using the apparatus shown in the embodiment of FIG. 2, suspended particulate matter in the air can be collected by sorting it according to the wind direction, and therefore it is possible to sort and collect suspended particulate matter in the air. It is very convenient because it allows you to easily analyze and clarify whether the suspended particulate matter is distributed in large quantities in the air, where it comes from, etc. together with the collected amount and type, and it is possible to accurately grasp the state of distribution of suspended particulate matter near the installation location of the device. It is.

In this case, in this embodiment, when there is no wind or a light wind and the wind vane 24 is not actually operating (even in this case, the pointer of the wind vane 24 indicates a certain wind direction, (The wind direction instruction is not accurate because the wind is too weak to operate), samplers by wind direction 1a to d
The collection of suspended particulate matter by
Since the collection is performed by a windless sampler 2 that is different from the wind direction samplers 1a to d, each wind direction sampler 1a to d collects the wind when the wind is in the correct wind direction range, respectively. Therefore,
The reliability of collection by wind direction is high. In addition, in the above embodiment, each wind direction sampler 1a to
d. Hour meters 32a-b, 33 are respectively arranged corresponding to the windless sampler 2, and the sampling time for each wind direction is accumulated, so that the sampling time per unit time corresponding to each wind direction is accumulated. It is convenient for sample analysis as it is possible to calculate the collected amount.Furthermore, the windless sampler 2 collects suspended particulate matter in no wind or light wind conditions, and the control sampler collects the entire wind direction near the device installation location. Since the entire suspended particulate matter is collected regardless of wind speed or wind speed, the amount and type of suspended particulate matter collected by these no-wind sampler 2 and control sampler 3 are collected by wind direction samplers 1a to d. By comparing the suspended particulate matter thus collected, the distribution state of the suspended particulate matter can be analyzed and elucidated in more detail from various points of view.

In the above embodiment, the wind direction is divided into four ranges: northeast, southwest, but it is not limited to this, and can be divided in various ways depending on the installation location of the device, purpose, etc. Further, the sampler may be a single-stage type that collects suspended particulate matter in all particle size ranges, or it may be a multi-stage type with two or more stages that collects particles in predetermined particle size ranges for each wind direction. .
Further, in the above embodiment, when collecting suspended particulate matter by wind direction, it is not collected by wind speed, but if necessary, it can be configured to collect by wind direction and wind speed. Furthermore, in the above embodiments, a control sampler that constantly performs sampling is provided, but this control sampler may be omitted. Furthermore, although the above embodiment describes the collection of suspended particulate matter, it is also possible to similarly collect gases, mist, etc. in the air according to wind direction. In this case, the sampler can be configured to contain an absorbent or adsorbent that sucks or adsorbs these gases, mist, etc. Alternatively, an absorbent or an adsorbent may be housed in the sampler to absorb or adsorb and collect gas, mist, etc., and paper or the like may be provided to collect floating particulate matter. Furthermore, a dedicated pump may be connected to each sampler via a solenoid valve, and the means for opening and closing between the sampler and the pump is not limited to the solenoid valve, and other configurations are also contemplated by the present invention. Various changes may be made without departing from the above.

As explained above, the present invention includes a plurality of samplers 1a, 1b, 1c, and 1d separated by wind direction for collecting suspended particulate matter when the wind vane 24 is in operation; A windless sampler 2 for collecting suspended particulate matter etc. when the wind vane 24 is not operating, and these wind direction and windless samplers 1a, 1b, 1c, 1d,
On-off valves 6a, 6b, 6 connected to 2, respectively.
c, 6d, 7, and these on-off valves 6a, 6b, 6
The suction pump 13, the anemometer 24, and the anemometer 25 connected to the wind vane 24 and the anemometer 25 determine the wind direction when the wind speed measured by the anemometer 25 becomes greater than the minimum wind speed for operating the anemometer 24. Give an opening command to the on-off valves 6a, 6b, 6c, 6d of any of the above samplers 1a, 1b, 1c, 1d corresponding to the wind direction measured by the wind speed meter 25, and Wind speed is wind vane 2
means for giving an opening command to the on-off valve 7 of the windless sampler 2 when the wind speed falls below the minimum wind speed for operating the wind vane 24 and the anemometer 25.
Open any of the above-mentioned on-off valves 6a, 6b, 6c, 6d, 7 according to the wind direction and wind speed measured by the above, and suck the air from the wind direction-specific or no-wind sampler connected to the opened on-off valve. pump 1
Since this sampler is configured to collect suspended particulate matter etc. by suction at step 3, it is possible to sort and collect suspended particulate matter etc. in the air according to the wind direction. Accurately analyze the floating distribution state of suspended particulate matter, etc. in the vicinity,
This is something that can be explained. In this case, in the present invention, accurate analysis can be performed by using a wind direction sampler and a windless sampler together. In other words, when there is no wind or light wind, the pointer of the wind vane indicates a certain wind direction, but the wind direction indication is not accurate, but with the device of the present invention, it is possible to The collection of suspended particulate matter by the sampler has been stopped, and the collection is done by a windless sampler that is separate from the wind direction sampler, so each wind direction sampler has wind in its correct wind direction range. The things of the time are collected. Therefore, the reliability of collection by wind direction is high, and by comparing the collection results by these samplers by wind direction and collection sampler, it is possible to clarify the distribution state of suspended particulate matter extremely accurately. It's something you get.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional airborne particulate matter collection device, and FIG. 2 is a block diagram showing an embodiment of the present invention. A... Sampling section, B... Flow rate control section, C
...detection section, D...electric control section, 1a, 1b, 1
c, 1d... Sampler by wind direction, 2... No wind sampler, 6a, 6b, 6c, 6d, 7... Solenoid valve (on/off valve), 13... Suction pump, 24... Wind vane, 25... Anemometer , 28...Wind direction and wind speed converter,
29...Control box, 30a, 30
b, 30c, 30d, 31...Relay switch.

Claims (1)

[Scope of utility model registration request] A plurality of samplers 1a, 1b, 1 separated by wind direction for collecting suspended particulate matter etc. when the wind vane 24 is in operation.
c, 1d, a windless sampler 2 for collecting suspended particulate matter etc. when the wind vane 24 is not operating, and connected to these wind direction and windless samplers 1a, 1b, 1c, 1d, 2, respectively. on-off valves 6a, 6b, 6c, 6d, 7, suction pump 13 connected to these on-off valves 6a, 6b, 6c, 6d, 7, anemometer 24, and anemometer 25.
and any of the above-mentioned wind direction samplers 1a, 1 corresponding to the wind direction measured by the anemometer 24 when the wind speed measured by the anemometer 25 becomes greater than the minimum wind speed for operating the anemometer 24.
b, 1c, 1d on-off valves 6a, 6b, 6c, 6d
and a means for giving an opening command to the on-off valve 7 of the windless sampler 2 when the wind speed measured by the anemometer 25 becomes lower than the minimum wind speed for operating the anemometer 24, One of the above-mentioned on-off valves 6a, 6 corresponds to the wind direction and wind speed measured by the anemometer 24 and anemometer 25.
b, 6c, 6d, and 7 are opened, and the suction pump 13 sucks air from the wind direction or no-flow sampler connected to the opened on-off valves, thereby collecting suspended particulate matter, etc. in this sampler. 1. A device for collecting airborne particulate matter, etc. according to wind direction, characterized by being configured as follows.