CN107991236B - Microbial aerosol detection device - Google Patents
Microbial aerosol detection device Download PDFInfo
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- CN107991236B CN107991236B CN201711258969.9A CN201711258969A CN107991236B CN 107991236 B CN107991236 B CN 107991236B CN 201711258969 A CN201711258969 A CN 201711258969A CN 107991236 B CN107991236 B CN 107991236B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/02—Mechanical
- G01N2201/024—Modular construction
- G01N2201/0245—Modular construction with insertable-removable part
Abstract
The invention discloses a microbial aerosol detection device, which can be used for conveniently disassembling a detector body so as to clean a light emitter and a sensor and prevent aerosol detected in the previous time from influencing a detection result.
Description
Technical Field
The invention relates to a microbial aerosol detection device, and belongs to the technical field of microbial aerosol detection equipment.
Background
Aerosols are colloidal dispersions, also known as gas dispersions, of small particles of a solid or liquid dispersed and suspended in a gaseous medium. The dispersed phase is solid or liquid small particles with size of 0.001-100 μm, and the dispersion medium is gas.
Clouds, fog, dust in the sky, smoke from unburnt fuels in boilers and various engines used in industry and transportation, solid dust from mining, quarry grinding and grain processing, artificial masking smoke and toxic fumes are all specific examples of aerosols. The elimination of aerosol is mainly based on atmospheric precipitation, collision between small particles, coagulation, polymerization and sedimentation. Haze is a phenomenon that a large number of extremely fine dry dust particles and the like float uniformly in the air, so that the air with horizontal visibility of less than 10 kilometers is generally turbid, wherein the dry dust particles refer to dry aerosol particles. Generally, when the visibility is 1-10 km, the influence of dry aerosol (namely, the influence of haze) and the contribution of water drops (namely, the contribution of light fog) can be existed and are not easy to distinguish, so the phenomenon is called fog-haze phenomenon. Since no aerosol particles are present in the actual atmosphere as condensation nuclei (or ice nuclei) of the cloud and no mist can be formed, the back of both the mist and the haze is associated with the aerosol particles.
The air contains a large amount of microorganisms, such as air plankton, and the microorganisms mainly comprise the coccus which is attached to dust and flies from the ground, so that the coccus has great influence on the health of the human body. With the continuous attention of people on the environment, the method has an extremely important effect on accurately detecting the microbial aerosol in the atmosphere.
However, in the current microbial aerosol detection, air is generally filled into a detector, and detection of the gas is realized through a sensor such as an optical sensor, and although the detection of the structure is convenient, the aerosol is easily adhered to an optical device and the sensor along with long-time use, so that the detection result is inaccurate, and the current equipment is very difficult to disassemble, so that the service life is short, and the detection precision is low.
The invention aims at the problems and provides a microbial aerosol detection device so as to improve the detection precision and prolong the service life.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the microbial aerosol detection device comprises a detector body, a light-emitting component, a light-receiving component and a detection control calculation display component, wherein a detection cavity is arranged in the detector body, the light-emitting component is arranged at one end of the detection cavity, the light-receiving component is arranged at the other end of the detection cavity, the light-emitting component is connected with the detection control calculation display component by adopting a quick connector I, the light-receiving components are connected with the detection control calculation display component by adopting a quick connector II, and a controller in the detection control technology display component judges the microbial aerosol condition in the gas in the cavity according to the light intensity received by the light-receiving component and the light intensity emitted by the light-emitting component, and is characterized in that a gas inlet pipe and a gas outlet pipe which are communicated with the detection cavity are arranged on the detector body, and the detector body is of a detachable structure, so as to achieve regular cleaning of the light emitting assembly and the light receiving assembly.
Further, preferably, the detector body includes a light-emitting-side fixing head, a light-receiving-side fixing head, and a snap member, wherein, the end of the light-emitting side fixing head is provided with an inserting embedding head, the end of the light-receiving side fixing head is provided with an inserting seat, the inserting and fitting head is inserted into the inserting and fitting seat against the same shaft, a connecting clamping groove is arranged on the outer circumference of the light-emitting side fixing head, the outer circumference of the light receiving side fixed head is also provided with a connecting clamping groove, two ends of the buckle component are respectively clamped in the connecting clamping groove of the light emitting side fixed head and the connecting clamping groove of the light receiving side fixed head, so as to connect the light emitting side fixing head and the light receiving side fixing head together, the light emitting side fixing head being provided with tapered holes along a radial direction through which the gas outlet pipe passes, the light receiving side fixing head is provided with a taper hole along the radial direction for a gas inlet pipe to pass through.
Further, as preferred, the buckle assembly comprises a first buckling ring, a second buckling ring and an outer fixing ring, wherein the first buckling ring and the second buckling ring are of semicircular structures, the first buckling ring and the second buckling ring are of a whole circular cylindrical structure, the first buckling ring and the second buckling ring are of the same structure, a first buckling shoulder and a second buckling shoulder are respectively arranged at two ends of the inner wall of the first buckling ring and the second buckling ring, the first buckling shoulder is buckled in the connecting clamping groove of the light-emitting side fixing head, the second buckling shoulder is buckled in the connecting clamping groove of the light-receiving side fixing head, the outer fixing ring is coaxially arranged outside the first buckling ring and the second buckling ring, a hole corresponding to the tapered hole is formed in the outer fixing ring, a clamping spring mounting groove for fixing and locking a clamping spring is further formed in the outer circumference of the light-receiving side fixing head, and the clamping spring is used for limiting the axial movement of the outer fixing ring, and one end of the outer fixing ring, which is far away from the clamp spring, is limited on a shaft shoulder of the light-emitting side fixing head.
Further, preferably, the inserting and combining embedding head is provided with a positioning groove against the middle position coaxially inserted into the inserting and combining seat, and a positioning ring is fixedly arranged in the positioning groove.
Further, as preferred, gas lets in pipe and gas outlet pipe and is the toper structure, and the tip of toper structure inserts detect the intracavity, the outer wall that gas lets in pipe and gas outlet pipe all is provided with the elastic rubber sealing layer.
Further, as the preferred, be provided with backup pad one in the luminous side fixed head, be provided with fixed pipe one in the backup pad one, the wire in the fixed pipe one is connected with quick joint one, the inner of backup pad one is provided with the sealing washer, the one side that is close to on the sealing washer and detects the chamber is provided with the luminous head fixed plate, the luminous head sets up on the luminous head fixed plate.
Further, as preferred, be provided with backup pad two in the fixed head of light receiving side, be provided with fixed pipe two in the backup pad two, the wire in the fixed pipe two is connected with quick-operation joint two, the inner of backup pad two is provided with the sealing washer, should be provided with the light receiving sensor fixed plate on the sealing washer near one side in detection chamber, light receiving component sets up on the light receiving sensor fixed plate.
Further, preferably, the detection control calculation display component is controlled and calculated by adopting a PLC or a single chip microcomputer.
Compared with the prior art, the invention has the beneficial effects that:
the invention can not only disassemble the detector body conveniently so as to clean the illuminator and the sensor and prevent the aerosol detected in the previous time from influencing the detection result, but also disassemble conveniently and quickly.
Drawings
FIG. 1 is a schematic view of the overall structure of the microbial aerosol detection device of the present invention;
FIG. 2 is a schematic structural diagram of a first buckling ring and a second buckling ring of the microbial aerosol detection device of the present invention;
FIG. 3 is a schematic structural diagram of an outer fixing ring of the microbial aerosol detection device of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the microbial aerosol detection device comprises a detector body, a light-emitting component, a light-receiving component 15 and a detection control calculation display component 1, wherein a detection cavity is arranged in the detector body, the light-emitting component is arranged at one end of the detection cavity, the light-receiving component is arranged at the other end of the detection cavity, the light-emitting component is connected with the detection control calculation display component 1 by adopting a first quick connector 2, the light-receiving components are connected with the detection control calculation display component 1 by adopting a second quick connector 9, a controller in the detection control technology display component judges the microbial aerosol condition in the gas in the cavity according to the light intensity received by the light-receiving component and the light intensity emitted by the light-emitting component, and the microbial aerosol detection device is characterized in that a gas inlet pipe 10 and a gas outlet pipe 11 which are communicated with the detection cavity are arranged on the detector body, and the detector body is of a detachable structure so as to realize the periodic cleaning of the light-emitting component and the light-receiving component.
As shown in fig. 1, the detector body includes a light-emitting-side fixing head 3, a light-receiving-side fixing head 4 and a snap assembly, wherein, the end of the light-emitting side fixing head 3 is provided with an inserting embedding head, the end of the light-receiving side fixing head 4 is provided with an inserting seat, the inserting and fitting head is inserted into the inserting and fitting seat against the same shaft, a connecting clamping groove is arranged on the outer circumference of the light-emitting side fixing head, the outer circumference of the light receiving side fixed head 4 is also provided with a connecting clamping groove, two ends of the buckle component are respectively clamped in the connecting clamping groove of the light emitting side fixed head and the connecting clamping groove of the light receiving side fixed head, so as to connect the light emitting side fixing head and the light receiving side fixing head together, the light emitting side fixing head being provided with tapered holes along a radial direction through which the gas outlet pipe passes, the light receiving side fixing head is provided with a taper hole along the radial direction for a gas inlet pipe to pass through.
Wherein, in this embodiment, the fastening assembly comprises a first fastening ring 17, a second fastening ring 18 and an outer fixing ring 19, wherein the first fastening ring 17 and the second fastening ring 18 are both semi-circular structures, and the first fastening ring and the second fastening ring are both configured into a whole circular column structure, the first fastening ring has the same structure as the second fastening ring, a first fastening shoulder 21 and a second fastening shoulder 23 are respectively arranged at two ends of the inner wall of the first fastening ring and the second fastening ring, a groove 22 is arranged between the first fastening shoulder 21 and the second fastening shoulder 23, the first fastening shoulder 21 is fastened in the connecting clamping groove of the light-emitting side fixing head, the second fastening shoulder 23 is fastened in the connecting clamping groove of the light-receiving side fixing head, the outer fixing ring and the shaft 19 are arranged outside the first fastening ring and the second fastening ring, a hole corresponding to the tapered hole is arranged on the outer fixing ring, and a snap spring for fixing and locking is further arranged on the outer circumference of the light-receiving side fixing head, the clamp spring is used for limiting the axial movement of the outer fixing ring, and one end, far away from the clamp spring, of the outer fixing ring is limited on a shaft shoulder of the light-emitting side fixing head.
In order to facilitate installation and positioning, the inserting and combining embedding head is provided with a positioning groove in the middle position which is propped against the inserting and combining seat and is coaxially inserted into the inserting and combining seat, and a positioning ring 16 is fixedly arranged in the positioning groove.
In order to ensure the sealing performance, the gas inlet pipe 10 and the gas outlet pipe 11 are both in a conical structure, the small end of the conical structure is inserted into the detection cavity, and elastic rubber sealing layers are arranged on the outer walls of the gas inlet pipe and the gas outlet pipe. During detection, air is only required to be introduced into the gas introducing pipe 10 for a certain time, then multiple detections are carried out, and the average value is obtained to be the index of the current microbial aerosol.
The light-emitting side fixing head is internally provided with a first supporting plate 6, the first supporting plate 6 is internally provided with a first fixing pipe 7, a lead in the first fixing pipe 7 is connected with a first quick connector 2, the inner end of the first supporting plate 6 is provided with a sealing ring 12, one side, close to the detection cavity, of the sealing ring 12 is provided with a light-emitting head fixing plate 13, and the light-emitting component 14 is arranged on the light-emitting head fixing plate 13.
The optical receiver is characterized in that a second supporting plate 5 is arranged in the optical receiver side fixing head, a second fixing tube 8 is arranged in the second supporting plate 5, a wire in the second fixing tube 8 is connected with a second quick connector 9, a sealing ring is arranged at the inner end of the second supporting plate 5, an optical receiver sensor fixing plate is arranged on one side, close to the detection cavity, of the sealing ring, and an optical receiver assembly is arranged on the optical receiver sensor fixing plate.
In this embodiment, the detection control calculation display component is controlled and calculated by a PLC or a single chip microcomputer.
The invention can not only disassemble the detector body conveniently so as to clean the illuminator and the sensor and prevent the aerosol detected in the previous time from influencing the detection result, but also disassemble conveniently and quickly.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The microbial aerosol detection device comprises a detector body, a light-emitting component, a light-receiving component and a detection control calculation display component, wherein a detection cavity is arranged in the detector body, the light-emitting component is arranged at one end of the detection cavity, the light-receiving component is arranged at the other end of the detection cavity, the light-emitting component is connected with the detection control calculation display component by adopting a quick connector I, the light-receiving components are connected with the detection control calculation display component by adopting a quick connector II, and a controller in the detection control calculation display component judges the microbial aerosol condition in the gas in the cavity according to the light intensity received by the light-receiving component and the light intensity emitted by the light-emitting component, and is characterized in that a gas inlet pipe and a gas outlet pipe which are communicated with the detection cavity are arranged on the detector body, and the detector body is of a detachable structure, so as to realize the regular cleaning of the light emitting component and the light receiving component;
the detector body comprises a light-emitting side fixing head, a light-receiving side fixing head and a buckle assembly, wherein an inserting embedding head is arranged at the end part of the light-emitting side fixing head, an inserting seat is arranged at the end part of the light-receiving side fixing head, the inserting embedding head is abutted against and coaxially inserted into the inserting seat, a connecting clamping groove is arranged on the outer circumference of the light-emitting side fixing head, a connecting clamping groove is also arranged on the outer circumference of the light-receiving side fixing head, two ends of the buckle assembly are respectively clamped in the connecting clamping groove of the light-emitting side fixing head and the connecting clamping groove of the light-receiving side fixing head so as to connect the light-emitting side fixing head and the light-receiving side fixing head together, a conical hole for a gas outlet pipe to pass through is radially arranged on the light-emitting side fixing head, and a conical hole for a gas inlet pipe to pass through is radially arranged on the light-receiving side;
the buckle component comprises a first buckling ring, a second buckling ring and an outer fixing ring, wherein the first buckling ring and the second buckling ring are of semicircular structures, the first buckling ring and the second buckling ring are of a whole circular column structure, the first buckling ring and the second buckling ring are of the same structure, a first buckling shoulder and a second buckling shoulder are respectively arranged at two ends of the inner wall of the first buckling ring and the second buckling ring, the first buckling shoulder is buckled in a connecting clamping groove of the light-emitting side fixing head, the second buckling shoulder is buckled in a connecting clamping groove of the light-receiving side fixing head, the outer fixing ring is coaxially arranged outside the first buckling ring and the second buckling ring, a hole corresponding to the tapered hole is formed in the outer fixing ring, a clamping spring for fixing and locking the clamping spring is further arranged on the outer circumference of the light-receiving side fixing head, and the clamping spring is used for limiting the axial movement of the outer fixing ring, and one end of the outer fixing ring, which is far away from the clamp spring, is limited on a shaft shoulder of the light-emitting side fixing head.
2. A microbial aerosol detection device according to claim 1, wherein: the inserting and combining embedded head is abutted against the middle position coaxially inserted into the inserting and combining seat and is provided with a positioning groove, and a positioning ring is fixedly arranged in the positioning groove.
3. A microbial aerosol detection device according to claim 1, wherein: the gas lets in pipe and gas exit tube and is the toper structure, and the tip of toper structure inserts detect the intracavity, the outer wall that gas let in pipe and gas exit tube all is provided with the elastic rubber sealing layer.
4. A microbial aerosol detection device according to claim 1, wherein: the light-emitting side fixing head is internally provided with a first supporting plate, the first supporting plate is internally provided with a first fixing tube, a wire in the first fixing tube is connected with a first quick connector, the inner end of the first supporting plate is provided with a sealing ring, one side, close to the detection cavity, of the sealing ring is provided with a light-emitting head fixing plate, and the light-emitting component is arranged on the light-emitting head fixing plate.
5. A microbial aerosol detection apparatus according to claim 4, wherein: the light receiving side fixing head is internally provided with a second supporting plate, the second supporting plate is internally provided with a second fixing tube, a wire in the second fixing tube is connected with the second quick connector, the inner end of the second supporting plate is provided with a sealing ring, one side, close to the detection cavity, of the sealing ring is provided with a light receiving sensor fixing plate, and the light receiving assembly is arranged on the light receiving sensor fixing plate.
6. A microbial aerosol detection device according to any one of claims 1 to 5, wherein: the detection control calculation display component adopts a PLC or a single chip microcomputer to control and calculate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258969.9A CN107991236B (en) | 2017-12-04 | 2017-12-04 | Microbial aerosol detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258969.9A CN107991236B (en) | 2017-12-04 | 2017-12-04 | Microbial aerosol detection device |
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| Publication Number | Publication Date |
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| CN107991236A CN107991236A (en) | 2018-05-04 |
| CN107991236B true CN107991236B (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711258969.9A Active CN107991236B (en) | 2017-12-04 | 2017-12-04 | Microbial aerosol detection device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2516967Y (en) * | 2001-12-21 | 2002-10-16 | 中国科学技术大学 | Three-wavelength full scattering laser smoke identification fire detection device |
| CN203479697U (en) * | 2013-05-28 | 2014-03-12 | 长沙开元仪器股份有限公司 | Non-dispersive infrared detector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE335080B (en) * | 1970-07-24 | 1971-05-10 | Ericsson Telefon Ab L M | |
| CN101339127B (en) * | 2008-08-07 | 2012-11-28 | 石兆奇 | Sensor for measuring simple substance and chemical compound gas |
| CN106662519B (en) * | 2014-08-20 | 2021-10-15 | 研究三角协会 | Apparatus, system and method for detecting particles |
| CN205067284U (en) * | 2015-09-11 | 2016-03-02 | 比亚迪股份有限公司 | Aerosol determine module and aerosol detection device |
| CN206378418U (en) * | 2016-12-27 | 2017-08-04 | 苏州汉宣检测科技有限公司 | A kind of laser gas detection means |
-
2017
- 2017-12-04 CN CN201711258969.9A patent/CN107991236B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2516967Y (en) * | 2001-12-21 | 2002-10-16 | 中国科学技术大学 | Three-wavelength full scattering laser smoke identification fire detection device |
| CN203479697U (en) * | 2013-05-28 | 2014-03-12 | 长沙开元仪器股份有限公司 | Non-dispersive infrared detector |
Non-Patent Citations (1)
| Title |
|---|
| 基于集成设备用高低频混装连接器的稳相电缆组件设计;陈学永 等，;《测控技术》;20111231;第 30 卷(第 12 期);第100-101页，图3 * |
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