CN203688410U - Dust sensor for monitoring dust concentration on line - Google Patents
Dust sensor for monitoring dust concentration on line Download PDFInfo
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- CN203688410U CN203688410U CN201420091383.3U CN201420091383U CN203688410U CN 203688410 U CN203688410 U CN 203688410U CN 201420091383 U CN201420091383 U CN 201420091383U CN 203688410 U CN203688410 U CN 203688410U
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- dust sensor
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- line monitoring
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Abstract
The utility model relates to a dust sensor for monitoring dust concentration on line. The dust sensor comprises a box, a gas inlet pipe, a gas outlet pipe, a laser transmitter, a ray receiver assembly and a light reflection part, wherein a sealed detection area can be formed inside the box; the box is provided with a gas inlet channel and a gas outlet channel which are positioned on two opposite sides of the detection area; the gas inlet pipe and the gas outlet pipe are respectively positioned in the gas inlet channel and the gas outlet channel; the laser transmitter is communicated with the detection area from one end part of the box; the gas inlet pipe and the gas outlet pipe are positioned on the same straight line; laser light transmitted by the laser transmitter is intersected with a connection line of the gas inlet pipe and the gas outlet pipe; the ray receiver assembly is positioned above the detection area; the light reflection part is detachably arranged at the bottom of the detection area; the ray receiver assembly is used for receiving the laser light transmitted by the laser transmitter to emit the laser light to gas particles in the detection area to generate information of refracted light, receiving the information, converting the information into a signal, and transmitting the signal to a signal processing system of a measurement instrument. The dust sensor is simple in structure and high in detection result accuracy.
Description
Technical field
the utility model relates to a kind of device of the airborne powder concentration measurement for industrial and mining enterprises workplace, and specifically, the utility model relates to a kind of dust sensor for on-line monitoring dust concentration.
Background technology
the harmfulness of the dust that dust produces in particularly producing is larger, and sucking for a long time the caused pneumoconiosis of high concentrate dust is modal occupational illness; The lead containing in dust, cadmium, arsenic, the toxic elements such as manganese, dissolve to be absorbed at respiratory tract and enter blood circulation and cause poisoning; The lightweight dust such as hair dirt, cotton dirt, in the time being inhaled into respiratory tract, are easily attached to nasal cavity, tracheae, and bronchial mucous membrane, long-term local irritant effect and continuation are infected and are caused chronic inflammation.In addition, dust also can cause eye illness, skin disease etc., and dust also has carcinogenesis, particularly lung cancer.For the such as colliery of industry that easily produces in process of production dust, cement, flour mill, medication chemistry industries etc., also exist dust concentration in air to be tending towards saturated, are meeting the potential safety hazard of blasting in static or naked light situation.Therefore, no matter be to consider from production safety angle, or consider from the healthy angle of protection worker, all need workplace to carry out dust detection.
chinese utility model patent ZL200820122691.2 discloses a kind of laser dust detector; it comprises the darkroom with an air intake opening and a gas outlet; two dividing plates are installed every the gas passage of establishing between described air intake opening and gas outlet; one end, described darkroom is provided with the light source being produced by a laser generator; the other end in described darkroom a be disposed with optical lens group and a photelectric receiver corresponding to described light source, offers the light hole corresponding with described light source on described two dividing plates; The gas outlet in described darkroom sequentially connects an aspiration pump, a humidity sensor and an exhausr port; Described photelectric receiver sequentially connects a prime amplifier, an integrating circuit, an analog to digital converter and a single-chip microcomputer; Described humidity sensor is connected described single-chip microcomputer by data line respectively with laser generator, presets humidity correcting module, dust concentration exceed standard alarm threshold value, mass concentration conversion coefficient K value and Chinese character base in described single-chip microcomputer.But the reception of the photelectric receiver of this laser dust detector is the scattered light light intensity signal of dust (particle), and light hole size on dividing plate is extremely important, light hole is excessive, the refraction producing after gas particles is by Ear Mucosa Treated by He Ne Laser Irradiation or the light of reflection, also easily received by photelectric receiver; Light hole is too small, is unfavorable for photelectric receiver receiving scattered light light intensity signal completely, and therefore, the light hole on dividing plate is excessive or too small, all easily affects the accuracy of testing result.
Summary of the invention
technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of improved dust sensor for on-line monitoring dust concentration is provided.
for solving the problems of the technologies described above, the utility model is taked following technical scheme:
a kind of dust sensor for on-line monitoring dust concentration, comprising that inside has can form sealing detection region and also have the generating laser that is positioned at the inlet channel of the relative both sides of described surveyed area and the box body of outlet passageway, the draft tube that lays respectively at described inlet channel and described outlet passageway and escape pipe, is connected with surveyed area from an end of box body, draft tube and escape pipe are on same straight line, the laser that generating laser is launched setting crossing with draft tube and escape pipe connecting line
particularly, dust sensor also comprises and is positioned at the light receiver assembly of surveyed area top and can dismantles the reflecting part that is arranged on surveyed area bottom, wherein light receiver assembly, for receiving the information of Ear Mucosa Treated by He Ne Laser Irradiation refract light that gas particles produces in surveyed area that generating laser sends, receives this information conversion process simultaneously and becomes signal to be resent to the signal processing system of measuring instrument.
preferably, light receiver assembly comprises the photelectric receiver housing that can dismantle and be arranged on hermetically on box body, be positioned at photelectric receiver housing and get lodged in the optical lens of surveyed area top, be positioned at optical lens top and irradiate the photelectric receiver of information for the light that is received from optical lens transmission, and convert for the information that photelectric receiver is received the converter that the signal processing system of measuring instrument can processing signals to, photelectric receiver housing can seal setting, and optical lens, photelectric receiver, converter is all arranged in photelectric receiver housing.
more preferably, optical lens is the lenticular lens of the equal outwardly convex of upper and lower both ends of the surface.First the convex lens by being positioned at lower surface are assembled the light of upwards refraction and the light that reflects from reflecting part, and then convex lens by being positioned at lower surface by the light scattering of assembling to photelectric receiver.
according to concrete an enforcement and preferred aspect of the present utility model, it caves inward the upper surface of above-mentioned reflecting part from end face.Be convenient to the light-ray condensing of reflection, the intensity information that photelectric receiver is received is more complete, has further guaranteed the accuracy of testing result.
further, be provided with the connecting hole that is connected with surveyed area in box body bottom and for by the capping of connecting hole sealing, the sunk surface of reflecting part being arranged in connecting hole upward, capping is conflicted in the bottom of reflecting part.Be convenient to replacing and the installation of luminous component.
preferably, the laser that generating laser is launched arranges with draft tube is vertical with escape pipe connecting line.Make photelectric receiver receive more accurately the refract light that Ear Mucosa Treated by He Ne Laser Irradiation produces on particle.
preferably, the both ends of box body are also respectively equipped with the first threaded hole and second threaded hole of corresponding setting, and the first threaded hole and the second threaded hole are all connected with surveyed area, generating laser is threaded connection part and is arranged in the first described threaded hole, is provided with the chock plug of phase threaded engagement in the second threaded hole.Be convenient to the production of each parts and the dismounting of each parts and installation in reality.
further, preferably, be also provided with and prevent that light from passing in and out the end socket of described surveyed area in described chock plug end.Be conducive to photelectric receiver and receive more accurately the refract light that Ear Mucosa Treated by He Ne Laser Irradiation produces on particle.
in addition, in the portion of giving vent to anger of above-mentioned draft tube, be provided with the concentrated air guide module of gas of being convenient to passing in described surveyed area, this air guide module middle part is provided with the gas outlet that is flat, simultaneously, the gas outlet of the flat of draft tube vertically arranges, and the laser vertical setting of launching with described generating laser.Be conducive to the centrality of gas flow surveyed area, reducing particle does not have irradiated possibility, further guarantees the accuracy of testing result.
due to the enforcement of above technical scheme, the utility model compared with prior art tool has the following advantages:
the utility model is radiated at the refraction principle producing on particle by light, be provided with reflecting part in the bottom of surveyed area simultaneously, the light of refraction is received by light receiver assembly completely, and under the effect of light receiver assembly, the light intensity information that receives is transformed to the signal processing system that is signal and is resent to measuring instrument, and whole testing process is all to carry out under sealing state, make testing result accuracy high, in addition, it is simple in structure that the utility model adopts, and it is convenient to implement.
Accompanying drawing explanation
below in conjunction with accompanying drawing and specific embodiment, the utility model is described in more detail.
fig. 1 analyses schematic diagram according to the part of the utility model dust sensor;
fig. 2 is the schematic top plan view of Fig. 1;
fig. 3 is the cross section enlarged diagram of draft tube inlet end in Fig. 2;
wherein: 6, dust sensor; 60, box body; 600, surveyed area; 601, inlet channel; 602, outlet passageway; 603, connecting hole; 604, capping; 605, the first threaded hole; 606, the second threaded hole; 61, draft tube; 610, air guide module; 611, gas outlet; 62, escape pipe; 63, generating laser; 64, light receiver assembly; 640, photelectric receiver housing; 641, optical lens; 642, photelectric receiver; 643, converter; 65, reflecting part; 66, threaded connector; 67, chock plug; 68, end socket.
Embodiment
as shown in Figures 1 to 3, according to the dust sensor 6 for on-line monitoring dust concentration of the present embodiment, it comprises that inside has can form sealing detection region 600 and also have and is positioned at surveyed area 600 inlet channels 601 of relative both sides and the box body 60 of outlet passageway 602, lay respectively at draft tube 61 and escape pipe 62 in described inlet channel 601 and described outlet passageway 602, the generating laser 63 being connected with surveyed area 600 from an end of box body 60, draft tube 61 and escape pipe 62 are on same straight line, and draft tube 61 is connected with the sampling head of measuring instrument, escape pipe 62 is connected with the air extractor (pump) of measuring instrument, the laser that generating laser 63 is launched and draft tube 61 and the crossing setting of escape pipe 62 connecting line, simultaneously, dust sensor 6 in this example also comprises the light receiver assembly 64 that is positioned at surveyed area 600 tops, and can dismantle the reflecting part 65 that is arranged on surveyed area 600 bottoms, wherein light receiver assembly 64 for the Ear Mucosa Treated by He Ne Laser Irradiation that receives generating laser and send the information at surveyed area 600 refract lights that interior gas particles produces, receive this information conversion process becomes signal to be resent to the signal processing system of measuring instrument simultaneously.
concrete, light receiver assembly 64 comprises the photelectric receiver housing 640 that can dismantle and be arranged on hermetically on box body 60, be positioned at photelectric receiver housing 640 and get lodged in the optical lens 641 of surveyed area 600 tops, be positioned at optical lens 641 tops and irradiate the photelectric receiver 642 of information for the light that is received from optical lens transmission, and convert for the information that photelectric receiver 642 is received the converter 643 that the signal processing system of measuring instrument can processing signals to, wherein, photelectric receiver housing 640 can seal setting, and optical lens 641, photelectric receiver 642, converter 643 is all arranged in photelectric receiver housing 640, wherein optical lens 641 is fastened on the connecting portion of photelectric receiver housing 640 and box body 60, photelectric receiver 642 is horizontally disposed with, and adopt the dismounting of externally threaded connected mode and be arranged in photelectric receiver housing 640.
in this example, above-mentioned optical lens 641 is the lenticular lens of the equal outwardly convex of upper and lower both ends of the surface.Adopt the object of lenticular lens to be: first the convex lens by being positioned at lower surface are assembled the light of upwards refraction and the light that reflects from reflecting part, and then convex lens by being positioned at lower surface by the light scattering of assembling to photelectric receiver, be conducive to photelectric receiver light penetrated the reception of information.
meanwhile, the upper surface of above-mentioned reflecting part 65 its cave inward from end face.Be convenient to the light-ray condensing of reflection, the intensity information that photelectric receiver is received is more complete, has further guaranteed the accuracy of testing result.
again by, the setting that this reflecting part 65 is concrete: be provided with the connecting hole 603 that is connected with surveyed area 600 and the capping 604 for connecting hole 603 is sealed in box body 60 bottoms, the sunk surface of reflecting part 65 being arranged in connecting hole 603 upward, capping 604 is conflicted in the bottom of reflecting part 65.Be convenient to replacing and the installation of luminous component 65.
in this example, the both ends of box body 60 are also respectively equipped with the first threaded hole 605 and second threaded hole 606 of corresponding setting, and the first threaded hole 605 and the second threaded hole 606 are all connected with surveyed area 600, generating laser 63 is threaded connection part 66 and is arranged in the first described threaded hole 605, in the second threaded hole 606, be provided with the chock plug 67 of phase threaded engagement, further, be also provided with the end socket 68 that prevents light turnover surveyed area 600 in chock plug 67 ends.So more be conducive to photelectric receiver and receive more accurately the refract light that Ear Mucosa Treated by He Ne Laser Irradiation produces on particle, be convenient to the production of each parts and the dismounting of each parts and installation in reality simultaneously.
meanwhile, the laser that the generating laser 63 in this example is launched and draft tube 61 and vertical setting of escape pipe 62 connecting lines.Make photelectric receiver 63 receive more accurately the refract light that Ear Mucosa Treated by He Ne Laser Irradiation produces on particle.
in addition, in the portion of giving vent to anger of above-mentioned draft tube 61, be provided with the concentrated air guide module 610 of gas of being convenient to passing in described surveyed area 600, these air guide module 610 middle parts are provided with the gas outlet 611 that is flat, simultaneously, the gas outlet 611 of the flat of draft tube 61 vertically arranges, and the laser vertical setting of launching with generating laser 63.Be conducive to the centrality of gas flow surveyed area, reducing particle does not have irradiated possibility, further guarantees the accuracy of testing result.
in sum, the utility model is radiated at the refraction principle producing on particle by light, be provided with reflecting part in the bottom of surveyed area simultaneously, the light of refraction is received by light receiver assembly completely, and under the effect of light receiver assembly, the light intensity information that receives is transformed to the signal processing system that is signal and is resent to measuring instrument, and whole testing process is all to carry out under sealing state, make testing result accuracy high, in addition, it is simple in structure that the utility model adopts, and it is convenient to implement.
above the utility model is described in detail; its object is to allow the personage who is familiar with this art can understand content of the present utility model and be implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to Spirit Essence of the present utility model change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (10)
1. the dust sensor for on-line monitoring dust concentration, it comprises that inside has can form sealing detection region and also have and is positioned at the inlet channel of the relative both sides of described surveyed area and the box body of outlet passageway, lay respectively at draft tube and escape pipe in described inlet channel and described outlet passageway, the generating laser being connected with described surveyed area from an end of described box body, described draft tube and escape pipe are on same straight line, the laser that described generating laser is launched and described draft tube and the crossing setting of described escape pipe connecting line, it is characterized in that: described dust sensor also comprises the light receiver assembly that is positioned at described surveyed area top, and can dismantle the reflecting part that is arranged on described surveyed area bottom, described light receiver assembly is for the information of Ear Mucosa Treated by He Ne Laser Irradiation refract light that gas particles produces in described surveyed area of receiving described generating laser and sending, receive this information conversion process becomes signal to be resent to the signal processing system of measuring instrument simultaneously.
2. the dust sensor for on-line monitoring dust concentration according to claim 1, it is characterized in that: described light receiver assembly comprises the photelectric receiver housing that can dismantle and be arranged on hermetically on described box body, be positioned at described housing and get lodged in the optical lens of described surveyed area top, be positioned at described optical lens top and irradiate the photelectric receiver of information for the light that is received from described optical lens transmission, and the converter that can process for the information of described photelectric receiver reception being converted to the signal processing system of described measuring instrument, described photelectric receiver housing can seal setting, and described optical lens, photelectric receiver, converter is all arranged in described photelectric receiver housing.
3. the dust sensor for on-line monitoring dust concentration according to claim 2, is characterized in that: described optical lens is the lenticular lens of the equal outwardly convex of upper and lower both ends of the surface.
4. the dust sensor for on-line monitoring dust concentration according to claim 1, is characterized in that: the upper surface of described reflecting part caves inward from end face.
5. the dust sensor for on-line monitoring dust concentration according to claim 4, it is characterized in that: be provided with the connecting hole that is connected with described surveyed area in described box body bottom and for by the capping of connecting hole sealing, the sunk surface of described reflecting part being arranged in connecting hole upward, described capping is conflicted in the bottom of described reflecting part.
6. the dust sensor for on-line monitoring dust concentration according to claim 1, is characterized in that: the laser that described generating laser is launched and described draft tube and vertical setting of described escape pipe connecting line.
7. the dust sensor for on-line monitoring dust concentration according to claim 1, it is characterized in that: the both ends of described box body are also respectively equipped with the first threaded hole and second threaded hole of corresponding setting, and described the first threaded hole and the second threaded hole are all connected with described surveyed area, described generating laser is threaded connection part and is arranged in the first described threaded hole, is provided with the chock plug of phase threaded engagement in the second described threaded hole.
8. the dust sensor for on-line monitoring dust concentration according to claim 7, is characterized in that: be also provided with and prevent that light from passing in and out the end socket of described surveyed area in described chock plug end.
9. the dust sensor for on-line monitoring dust concentration according to claim 1, it is characterized in that: in the portion of giving vent to anger of described draft tube, be provided with the concentrated air guide module of gas of being convenient to passing in described surveyed area, described air guide module middle part is provided with the gas outlet that is flat.
10. the dust sensor for on-line monitoring dust concentration according to claim 9, is characterized in that: the gas outlet of the flat of described draft tube vertically arranges, and the laser vertical setting of launching with described generating laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091383.3U CN203688410U (en) | 2014-02-28 | 2014-02-28 | Dust sensor for monitoring dust concentration on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091383.3U CN203688410U (en) | 2014-02-28 | 2014-02-28 | Dust sensor for monitoring dust concentration on line |
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| Publication Number | Publication Date |
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| CN203688410U true CN203688410U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420091383.3U Expired - Fee Related CN203688410U (en) | 2014-02-28 | 2014-02-28 | Dust sensor for monitoring dust concentration on line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837451A (en) * | 2014-02-28 | 2014-06-04 | 苏州亿利安机电科技有限公司 | Dust sensor for on-line monitoring of dust concentration |
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2014
- 2014-02-28 CN CN201420091383.3U patent/CN203688410U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837451A (en) * | 2014-02-28 | 2014-06-04 | 苏州亿利安机电科技有限公司 | Dust sensor for on-line monitoring of dust concentration |
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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 |
Granted publication date: 20140702 Termination date: 20190228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |