CN210401146U - Particulate matter detection device with self-cleaning function - Google Patents
Particulate matter detection device with self-cleaning function Download PDFInfo
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- CN210401146U CN210401146U CN201921469435.5U CN201921469435U CN210401146U CN 210401146 U CN210401146 U CN 210401146U CN 201921469435 U CN201921469435 U CN 201921469435U CN 210401146 U CN210401146 U CN 210401146U
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Abstract
The utility model relates to a particulate matter detection device field especially relates to a take self-cleaning function's particulate matter detection device, can carry out self-cleaning to remaining particulate matter in the detector. The utility model provides a take self-cleaning function's particulate matter detection device, includes sampling head, test passage, clean passageway and detector, sampling head and detector are connected at the test passage both ends, sampling head and detector are connected at clean passageway both ends, clean passageway is equipped with the air pump. The cleaning channel is used for cleaning the detector and blowing air into the detector through the air pump, so that particles remained in the detector are quickly discharged.
Description
Technical Field
The utility model relates to a particulate matter detection device field especially relates to a take self-cleaning function's particulate matter detection device.
Background
The air quality directly influences the living quality of people. The concentration value of particulate matter in air is one of the air quality indexes, and is particularly concerned with whether the air quality is clean or not. If the concentration of the particulate matters in the air is too high, the survival of people is very unfavorable, even diseases are caused, and the life of people is threatened due to the accumulation of the particulate matters in the air. For example, the building site is the place that raise dust, particulate matter concentration are higher, monitors particulate matter concentration in the air on the building site in real time, can know in real time during staff's the operational aspect of in time adjustment building site. Currently, the concentration of particulate matter in air is mainly detected by a particulate matter detection instrument. The basic principle of the current particulate matter concentration detection apparatus is to suck air into a detection device, and detect the particulate matter concentration in the air through a sensor in the detection device. In order to avoid the pollution of the external environment to the sensor, the sensor is communicated with the external atmosphere but cannot be fully exposed in the environment to be detected. However, due to long-term contact with air with particulate matter concentration, after the instrument works for a period of time, particulate matters and dust can cover the detection element, the detection is often not sensitive any more, and the detected data is inaccurate, so that the detection precision is ensured, the instrument is used for a period of time, the instrument needs to be disassembled with high labor cost for maintenance and cleaning, and the instrument can be reused after being reassembled, and is extremely inconvenient to clean.
SUMMERY OF THE UTILITY MODEL
Not enough to the above-mentioned of prior art, the utility model provides a take self-cleaning function's particulate matter detection device can carry out self-cleaning to remaining particulate matter in the detector.
The utility model provides a scheme as follows:
the utility model provides a take self-cleaning function's particulate matter detection device, includes sampling head, test passage, clean passageway and detector, sampling head and detector are connected at the test passage both ends, sampling head and detector are connected at clean passageway both ends, clean passageway is equipped with the air pump. The cleaning channel is used for cleaning the detector and blowing air into the detector through the air pump, so that particles remained in the detector are quickly discharged.
Preferably, the detection channel is provided with a first control valve. The first control valve is used for controlling the opening and closing of the detection channel.
Preferably, the first control valve is a normally open solenoid valve. Because this device is in the detection state most of the time, consequently first control valve is normally opened, guarantees the normal use of this device.
Preferably, the cleaning passage is provided with a second control valve. The second control valve is used for controlling the opening and closing of the cleaning channel.
Preferably, the second control valve is a normally closed solenoid valve. Because this device is in the detection state most of the time, only need open the second control valve when consequently cleaning, guarantee not to cause the influence to the detector under the normal use.
Preferably, the device is provided with a three-way joint, and the detection channel, the cleaning channel and the detector are connected through the three-way joint. The detection channel and the cleaning channel can be connected to the same position on the detector by using the three-way joint for connection, so that the space is saved, and the device is more compact and easy to use.
Preferably, the sampling head is provided with a filter screen. The filter screen is used for the other debris that the prefilter got into the detector, does not influence the particulate matter entering that awaits measuring.
Preferably, the cleaning channel is provided with a secondary filter, and the filtering precision of the secondary filter is higher than that of the filter screen. The air passing through the cleaning channel needs to play a cleaning role, so that particles in the air need to be filtered as much as possible, the air blown into the detector is ensured to be cleaner, and the detector is cleaned more thoroughly.
Preferably, the device comprises a shell, the sampling head is arranged outside the shell, and the detection channel, the cleaning channel and the detector are arranged inside the shell. The casing can be integrated with relevant parts, so that the whole structure of the device is more compact and plays a role in protection.
The utility model discloses a clean passageway has been set up, can be under the prerequisite of not dismantling detection device, through to ventilating in the detector to realize self-cleaning function. This device can not cause the interference under the normal detection condition, just can open clean passageway under the condition that needs clear up.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view of the present invention;
in the figure, 1-shell, 2-sampling head, 3-detection channel, 4-cleaning channel, 5-detector, 6-air pump, 7-first control valve, 8-second control valve, 9-secondary filter and 10-three-way joint.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the particulate matter detection device with the self-cleaning function provided in this embodiment includes a housing 1, a sampling head 2, a detection channel 3, a cleaning channel 4 and a detector 5, the sampling head 2 and the detector 5 are connected to two ends of the detection channel 3, the sampling head 2 and the detector 5 are connected to two ends of the cleaning channel 4, the air pump 6 is disposed in the cleaning channel 4, the sampling head 2 is disposed outside the housing 1, and the detection channel 3, the cleaning channel 4 and the detector 5 are disposed in the housing 1.
In this embodiment, the detection passage 3 is provided with a first control valve 7, and the first control valve 7 is a normally open solenoid valve. The cleaning channel 4 is provided with a second control valve 8, and the second control valve 8 is a normally closed electromagnetic valve.
In this embodiment, the device is provided with a three-way joint 10, and the detection channel 3 and the cleaning channel 4 are both connected to the detector 5 through the three-way joint 10.
In this embodiment, the sampling head 2 is provided with a filter screen, the cleaning passage 4 is provided with a secondary filter 9, and the filtering precision of the secondary filter 9 is higher than that of the filter screen.
The utility model discloses the theory of operation as follows:
when operating normally, the first control valve 7 is opened and the second control valve 8 is closed. At the moment, the detection channel 3 is unobstructed, the detector 5 can normally detect, and the cleaning channel 4 does not influence the detection result.
When the device is used for a long time and needs to be cleaned, the first control valve 7 is closed, the second control valve 8 is opened, and the air pump 6 is opened. At this time, the detection channel 3 is closed, the air pump 6 can rapidly send the air into the detector 5, and particulate matters remaining in the detector 5 are rapidly discharged in an air blowing mode, so that the purpose of cleaning is achieved.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and substance of the present invention, any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. Take self-cleaning function's particulate matter detection device, its characterized in that: including sampling head (2), test passage (3), clean passageway (4) and detector (5), sampling head (2) and detector (5) are connected at test passage (3) both ends, sampling head (2) and detector (5) are connected at clean passageway (4) both ends.
2. The particulate matter detecting device with a self-cleaning function according to claim 1, characterized in that: the detection channel (3) is provided with a first control valve (7).
3. The particulate matter detecting device with a self-cleaning function according to claim 2, characterized in that: the first control valve (7) is a normally open electromagnetic valve.
4. The particulate matter detecting device with a self-cleaning function according to claim 1, characterized in that: the cleaning channel (4) is provided with a second control valve (8).
5. The particulate matter detecting device with a self-cleaning function according to claim 4, characterized in that: the second control valve (8) is a normally closed electromagnetic valve.
6. The particulate matter detecting device with a self-cleaning function according to any one of claims 1 to 5, wherein: the device is provided with a three-way joint (10), and the detection channel (3), the cleaning channel (4) and the detector (5) are connected through the three-way joint (10).
7. The particulate matter detecting device with a self-cleaning function according to any one of claims 1 to 5, wherein: the sampling head (2) is provided with a filter screen.
8. The particulate matter detecting device with a self-cleaning function according to claim 7, characterized in that: the cleaning channel (4) is provided with a secondary filter (9), and the filtering precision of the secondary filter (9) is higher than that of the filter screen.
9. The particulate matter detecting device with a self-cleaning function according to any one of claims 1 to 5, wherein: the device comprises a shell (1), wherein a sampling head (2) is arranged outside the shell (1), and a detection channel (3), a cleaning channel (4) and a detector (5) are arranged inside the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469435.5U CN210401146U (en) | 2019-09-05 | 2019-09-05 | Particulate matter detection device with self-cleaning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469435.5U CN210401146U (en) | 2019-09-05 | 2019-09-05 | Particulate matter detection device with self-cleaning function |
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| CN210401146U true CN210401146U (en) | 2020-04-24 |
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| CN201921469435.5U Active CN210401146U (en) | 2019-09-05 | 2019-09-05 | Particulate matter detection device with self-cleaning function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858118A (en) * | 2021-03-31 | 2021-05-28 | 华北电力大学（保定） | Be used for indoor environment particulate matter detection device |
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2019
- 2019-09-05 CN CN201921469435.5U patent/CN210401146U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858118A (en) * | 2021-03-31 | 2021-05-28 | 华北电力大学（保定） | Be used for indoor environment particulate matter detection device |
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