CN203551342U - Front dust separator for air sampling - Google Patents
Front dust separator for air sampling Download PDFInfo
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- CN203551342U CN203551342U CN201320540196.4U CN201320540196U CN203551342U CN 203551342 U CN203551342 U CN 203551342U CN 201320540196 U CN201320540196 U CN 201320540196U CN 203551342 U CN203551342 U CN 203551342U
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Abstract
The utility model discloses a front dust separator for air sampling. The front dust separator comprises a shell, a fan, an airflow sensor and a filtering device, wherein a first flow channel and a second flow channel are respectively separated inside the shell; the second flow channel and the first flow channel are communicated through a sampling port; an air sample inlet and a dust particle outlet are respectively formed in the shell at the front end and tail end of the first flow channel; the fan is arranged in the first flow channel; the airflow sensor is positioned between the air sample inlet and the fan. The fan is arranged in the first flow channel, and the dust particle outlet is formed in the tail end of the first flow channel, so that large dust particles in the air sample can be effectively discharged, the burden of the filtering device can be greatly lightened so as to avoid blockage. Moreover, the front dust separator is provided with the airflow sensor, the airflow sensor is positioned in front of the filtering device, whether the sampling pipeline is blocked or not can be accurately detected, and the effects of prolonging the service life of the product and improving the service convenience can be achieved.
Description
Technical field
The utility model has about the preposition dust separator of one, espespecially a kind of preposition dust separator that promotes serviceable life and can accurately detect sampling line obstruction.
Background technology
Refer to shown in Fig. 1, air sampling device 1 is generally the equipment of the concentration change of certain (a bit) predetermined substance in a kind of air that detects or monitor a protected field 15 or composition, when the content of this material or composition exceeds certain numerical value, this air sampling device 1 can give the alarm, concrete example is as the air sampling smoke-detectors for fire early warning (Air Sampling Smoke Detector) or for carbon monoxide detector of preventing poisoning etc., this air sampling device 1 is generally connected with this protected field 15 by a sampling line 14, during running, getter device 11 in this air sampling device 1 can extract the air sample in this protected field 15 as fan, and make this air sample pass through the dust granule of a filtration unit 12 with larger of filtering, continue again this air sample to be pushed in a detecting unit 13 and to detect, take smoke-detectors as example, this detecting unit 13 includes a light-emitting component and a photo detector (or claiming testing light element) conventionally, its principle of utilizing smokescope height can affect photo detector reception light-emitting component signal is carried out smokescope monitoring, under the structure of its thin portion and operating principle are, in technical field, possess and conventionally know that the knowledgeable knows, in this, repeat no more, in addition, it is worth mentioning that, this filtration unit 12 is because of dust granule (material or the composition of this non-genus wish monitoring of described each dust granule of larger in filtering air sample in advance, therefore do not affect, detect precision), and can there is avoiding or reduce this detecting unit 13, be subject to the effect that dust granule pollutes.
Refer to shown in Fig. 1, when this protected field 15 be an air quality compared with rugged environment as factory, if only rely on the filtration unit 12 in this air sampling device 1 to carry out the dust granule in filtering air sample, significantly shortened the serviceable life that makes this filtration unit 12, or cause this filtration unit 12 to stop up very soon and affect detection, therefore there is dealer that one preposition dust filter 2 is set on the sampling line 14 of this air sampling device 1 front end, in this preposition dust filter 2, be provided with filter screen 21, thus, can alleviate the burden of this filtration unit 12 and improve its serviceable life, but, this existing preposition dust filter 2 still has following disappearance: first, this preposition dust filter 2 itself has equally easy obstruction and causes the problem reducing serviceable life, secondly, the interior airflow sensing device (air flow sensor) that conventionally can be provided with of this air sampling device 1 is in order to detect the flow of air sample, to monitor this sampling line 14, whether stop up, if now the measured flow of this airflow sensing device is too low, will have that cannot to differentiate be that itself stops up sampling line 14 or the problem that this preposition dust filter 2 stops up, finally, because this preposition dust filter 2 easily stops up, therefore can cause appreciable impact to the air-breathing usefulness of getter device 11, cause this sampling line 14 just must appropriateness reduce its length to compensate this negative factor in the design phase, so will cause product practicality limited and use inconvenience, therefore, how for above-mentioned disappearance, to be improved, be the technical difficulties place that this case creator institute wish solves.
Utility model content
Because existing preposition dust filter, because easily stopping up, it cause shorten serviceable life, and cannot correctly detect the obstruction of sampling line, therefore the purpose of this utility model is to develop a kind of preposition dust separator that promotes serviceable life and can accurately detect sampling line obstruction.
For reaching the above object, the utility model provides a kind of preposition dust separator for air sampling, it comprises: a housing, this enclosure interior is separated out respectively a first flow and one second runner, and between this second runner and first flow, by a sample tap, be connected, this housing is respectively equipped with an air sample entrance and a dust granule escape hole in first flow front end and end again; One fan, this fan is arranged in this first flow; One airflow sensing device, this airflow sensing device is arranged in this first flow, and this airflow sensing device is between this air sample entrance and fan; One filtration unit, this filtration unit is arranged in this second runner.
Wherein, the position of this sample tap is between this air sample entrance and dust granule escape hole.
Wherein, this first flow is shaped as linearity.
Wherein, this first flow is inverted L-shaped, also this first flow also further includes front end area and a back-end region away from air sample entrance near air sample entrance, and this back-end region is positioned at front end area one side, wherein this front end area is rectangular, and this back-end region is linearly.
Wherein, this fan is positioned at the back-end region of this first flow, and this airflow sensing device is positioned at the front end area of this first flow, and this fan is positioned at airflow sensing device one side.
According to the dust granule size differences of filtering, in this filtration unit, be also further provided with filter screen and a fie screen in a coarse strainer,, wherein this coarse strainer is near this sample tap, and this fie screen is near this air sample outlet, and in this, filter screen is between this coarse strainer and fie screen.
This preposition dust separator that is used for air sampling further includes an airflow sensing device, and this airflow sensing device is arranged in this first flow in this housing, and this airflow sensing device is between this air sample entrance and fan.
The utility model also provides a kind of preposition dust separator for air sampling, comprise: a housing, this enclosure interior is separated out respectively the first flow and second runner that for air sample, pass through, this second runner is positioned at this first flow one side, and by a sample tap, be connected between this second runner and first flow, this housing is provided with an air sample entrance in first flow front end again, this housing is provided with a dust granule escape hole in first flow end, and separately this housing is provided with an air sample outlet in the second runner one side; A fan, this fan is arranged in this first flow in this housing; An airflow sensing device, this airflow sensing device is arranged in this first flow in this housing, and this airflow sensing device is between this air sample entrance and fan; A filtration unit, this filtration unit is arranged in this second runner in this housing.
By being provided with fan in this first flow and this first flow end is provided with dust granule escape hole, and can effectively dust granule larger in air sample be discharged, can significantly alleviate the burden of this filtration unit to avoid its obstruction, by the utility model, be provided with airflow sensing device again, and before this airflow sensing device is positioned at filtration unit, can accurately detect sampling line and whether stop up, and then make the utility model can reach the effect that improves life of product and ease of use.
Accompanying drawing explanation
Fig. 1 is the action schematic diagram of prior art.
Fig. 2 is schematic diagram of the present utility model.
Fig. 3 is the schematic diagram of the utility model the second embodiment.
Fig. 4 is that the utility model is connected the action schematic diagram after combination with air sampling device and sampling line.
[symbol description]
(prior art)
1 air sampling device 11 getter devices
12 filtration unit 13 detecting units
14 sampling line 15 protected fields
2 preposition dust filter 21 filter screens
(the utility model)
3 housing 31 air sample entrances
32 air samples export 33 dust granule escape holes
34 first flow 341 front end area
342 back-end region 35 second runners
36 sample tap 4 fans
5 filtration unit 51 coarse strainers
6 airflow sensing device 7 protected fields
71 sampling line 8 air sampling devices
81 sample lines 82 getter devices
83 filtration unit 84 detecting units
P1 dust granule P2 determinand.
Embodiment
Refer to shown in Fig. 2, the utility model provides a kind of preposition dust separator for air sampling, and it comprises:
One housing 3, these housing 3 inside are separated out respectively first flow 34 and one second runner 35 that can pass through for air sample, this second runner 35 is positioned at this first flow 34 1 sides, and by a sample tap 36, be connected between this second runner 35 and first flow 34, this housing 3 is provided with an air sample entrance 31 in first flow 34 front ends again, this housing 3 is provided with a dust granule escape hole 33 in first flow 34 ends, another this housing 3 is provided with an air sample outlet 32 in the second runner 35 1 sides, the position of this sample tap 36 is between this air sample entrance 31 and dust granule escape hole 33 again, shown in Fig. 4, this air sample entrance 31 can be for being connected with protected field 7 its sampling lines 71, 32 of this air sample outlets can be for being connected with the sample lines 81 of an air sampling device 8, aforementioned the utility model is in fact identical with prior art (prior art) with the connected mode of sampling line 71 and air sampling device 8 its sample lines 81, in addition, refer to shown in Fig. 3, in other feasible embodiment, the shape of this first flow 34 can be linearity, so can have advantages of simple in structure, and in the present embodiment, 34 of this first flows can be inverted L-shaped, also the front end area 341 and that this first flow 34 still can further include close air sample entrance 31 is compared with the back-end region 342 away from air sample entrance 31, and this back-end region 342 is positioned at front end area 341 1 sides, wherein this front end area 341 can be rectangular, and 342 of this back-end regions can be linearly.
One fan 4, this fan 4 is arranged in these housing 3 its first flows 34, and in the present embodiment, this fan 4 is more specifically positioned at this first flow 34 regions, its rear end 342.
One airflow sensing device 6, this airflow sensing device (air flow sensor) 6 is arranged in these housing 3 its first flows 34, and this airflow sensing device 6 is between this air sample entrance 31 and fan 4, in the present embodiment, this airflow sensing device 6 is more specifically positioned at this first flow 34 its front end area 341, and this fan 4 is positioned at airflow sensing device 6 one sides, again, shown in Fig. 4, this airflow sensing device 6 can be electrically connected with middle control end or the air sampling device 8 of outside, makes user can learn that it measures the numerical value of gained.
One filtration unit 5, this filtration unit 5 is arranged in these housing 3 its second runners 35, preferably, according to dust granule size differences that can filtering, in this filtration unit 5, still can further be provided with filter screen 52 and a fie screen 53 in a coarse strainer 51,, wherein this coarse strainer 51 is near this sample tap 36, and this fie screen 53 is near this air sample outlet 32, and in this, 52 of filter screens are between this coarse strainer 51 and fie screen 53.
Refer to Fig. 2, shown in Fig. 4, when its air sample entrance 31 of the utility model and air sample outlet 32 is connected with outside sampling line 71 and air sampling device 8 its sample lines 81 respectively, by being provided with fan 4 in this first flow 34 and this first flow 34 ends are provided with dust granule escape hole 33, when air sample passes through fan 4, this fan 4 can pass through centrifugal force and gravity (inertia) principle, dust granule P1 larger in air sample is directly got rid of to discharge by this dust granule escape hole 33, also be that the utility model can be avoided or reduce the most easily causing the dust particle of filter net jam to enter or by this filtration unit 5, simultaneously, determinand P2 in this air sample is if smoke particle or carbon monoxide are because its particle is less, and still can by this sample tap 36, by filtration unit 5, be entered in this air sampling device 8 smoothly, and then make the utility model can reach the dust granule P1 separating in air sample, avoid it to enter and pollute the object of this air sampling device 8.
Referring again to Fig. 2, shown in Fig. 4, by being provided with fan 4 in this first flow 34 and this first flow 34 ends are provided with dust granule escape hole 33, and can effectively dust granule P1 larger in air sample be discharged to the utility model outside, can significantly alleviate the burden of this filtration unit 5 and avoid its obstruction, by the utility model, be provided with airflow sensing device 6 again, and for air sample, before this airflow sensing device 6 is positioned at filtration unit 5, make this airflow sensing device 6 can not be subject to filtration unit 5 peaces to disturb and can accurately detect sampling line 71 and whether stop up, finally, because of filtration unit 5 of the present utility model, can more existingly put before dust filter 2 is difficult for stopping up, therefore the air-breathing usefulness impact for the getter device 82 of air sampling device 8 inside is less, thereby can be without the length of this sampling line 71 of reduction, can improve equipment disposes and the elasticity configuring, and then make the utility model can reach the effect that improves product serviceable life and ease of use, in addition, again by interior coarse strainer 51, middle filter screen 52 and the fie screen 53 of being further provided with of this filtration unit 5, and can reach preferably dust filtering efficiency, can more effectively alleviate the burden of the filtration unit 83 of these air sampling device 8 inside, also can more preferably avoid its detecting unit 84 to be polluted simultaneously, and then make the utility model can have better dust separation effect concurrently.
Claims (8)
1. for a preposition dust separator for air sampling, it is characterized in that, comprise:
A housing, this enclosure interior is separated out respectively the first flow and second runner that for air sample, pass through, this second runner is positioned at this first flow one side, and by a sample tap, be connected between this second runner and first flow, this housing is provided with an air sample entrance in first flow front end again, this housing is provided with a dust granule escape hole in first flow end, and separately this housing is provided with an air sample outlet in the second runner one side;
A fan, this fan is arranged in this first flow in this housing;
A filtration unit, this filtration unit is arranged in this second runner in this housing.
2. the preposition dust separator for air sampling as claimed in claim 1, is characterized in that, the position of this sample tap is between this air sample entrance and dust granule escape hole.
3. the preposition dust separator for air sampling as claimed in claim 1, is characterized in that, this first flow be shaped as linearity.
4. the preposition dust separator for air sampling as claimed in claim 1, it is characterized in that, this first flow is inverted L-shaped, also this first flow also further includes front end area and a back-end region away from air sample entrance near air sample entrance, and this back-end region is positioned at front end area one side, wherein this front end area is rectangular, and this back-end region is linearly.
5. the preposition dust separator for air sampling as claimed in claim 4, is characterized in that, this fan is positioned at the back-end region of this first flow, and this airflow sensing device is positioned at the front end area of this first flow, and this fan is positioned at airflow sensing device one side.
6. the preposition dust separator for air sampling as claimed in claim 1, it is characterized in that, according to the dust granule size differences of filtering, in this filtration unit, be also further provided with filter screen and a fie screen in a coarse strainer,, wherein this coarse strainer is near this sample tap, this fie screen is near this air sample outlet, and in this, filter screen is between this coarse strainer and fie screen.
7. the preposition dust separator for air sampling as described in any one in claim 1 to 6, it is characterized in that, further include an airflow sensing device, this airflow sensing device is arranged in this first flow in this housing, and this airflow sensing device is between this air sample entrance and fan.
8. for a preposition dust separator for air sampling, it is characterized in that, comprise:
A housing, this enclosure interior is separated out respectively the first flow and second runner that for air sample, pass through, this second runner is positioned at this first flow one side, and by a sample tap, be connected between this second runner and first flow, this housing is provided with an air sample entrance in first flow front end again, this housing is provided with a dust granule escape hole in first flow end, and separately this housing is provided with an air sample outlet in the second runner one side;
A fan, this fan is arranged in this first flow in this housing;
An airflow sensing device, this airflow sensing device is arranged in this first flow in this housing, and this airflow sensing device is between this air sample entrance and fan;
A filtration unit, this filtration unit is arranged in this second runner in this housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320540196.4U CN203551342U (en) | 2013-09-02 | 2013-09-02 | Front dust separator for air sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320540196.4U CN203551342U (en) | 2013-09-02 | 2013-09-02 | Front dust separator for air sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551342U true CN203551342U (en) | 2014-04-16 |
Family
ID=50469440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320540196.4U Expired - Fee Related CN203551342U (en) | 2013-09-02 | 2013-09-02 | Front dust separator for air sampling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113160514A (en) * | 2020-01-22 | 2021-07-23 | 中移物联网有限公司 | Air duct type smoke sensing system |
-
2013
- 2013-09-02 CN CN201320540196.4U patent/CN203551342U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113160514A (en) * | 2020-01-22 | 2021-07-23 | 中移物联网有限公司 | Air duct type smoke sensing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 |