CN111307682A - Catering industry oil smoke detection equipment and detection method - Google Patents
Catering industry oil smoke detection equipment and detection method Download PDFInfo
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- CN111307682A CN111307682A CN202010182069.6A CN202010182069A CN111307682A CN 111307682 A CN111307682 A CN 111307682A CN 202010182069 A CN202010182069 A CN 202010182069A CN 111307682 A CN111307682 A CN 111307682A
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- 238000001514 detection method Methods 0.000 title claims abstract description 177
- 239000000779 smoke Substances 0.000 title claims abstract description 67
- 238000005070 sampling Methods 0.000 claims abstract description 60
- 238000004140 cleaning Methods 0.000 claims abstract description 45
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 9
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 54
- 238000007664 blowing Methods 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 11
- 239000002893 slag Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000003517 fume Substances 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000010411 cooking Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 239000006233 lamp black Substances 0.000 claims 2
- 239000013618 particulate matter Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000012459 cleaning agent Substances 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 8
- 239000013049 sediment Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
- G01N2001/2261—Sampling from a flowing stream of gas in a stack or chimney preventing condensation (heating lines)
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses catering industry oil smoke detection equipment and a detection method, and relates to the technical field of oil smoke detection. The technical key points are as follows: the catering industry oil smoke detection method comprises the following steps: in the preparation stage, a cleaning assembly is adopted to clean the convex lens and the inner wall of the detection chamber; in the sampling stage, a sampling head is stretched into a smoke exhaust pipeline to be detected, an air suction pump is started, so that oil smoke gas enters a first air inlet pipe and a second air inlet pipe through a sampling pipe, then respectively enters two detection chambers, then is converged into an exhaust pipe from a first air outlet pipe and a second air outlet pipe, and is filtered by a filter, and then clean air is exhausted into the atmosphere; and in the detection stage, the laser head and the photoelectric sensor are simultaneously started, the two detection chambers respectively detect the oil smoke concentration, the non-methane total hydrocarbon and the particulate matter, after the detection is finished, the data is output to a display screen through the controller, and meanwhile, a report is directly printed out through the printer. The invention has the advantages of high detection speed, high accuracy and unique detection result.
Description
Technical Field
The invention relates to the technical field of oil smoke detection, in particular to oil smoke detection equipment and a detection method for catering industry.
Background
In the food cooking and processing processes, grease and food organic matters are heated and decomposed or cracked, moisture in food materials is rapidly vaporized, fine particles and harmful gas are generated through combustion thermal decomposition, and finally oil smoke consisting of volatile matters, aerosol, water vapor and the fine particles at high temperature of the grease and the food materials is formed. The oil smoke not only directly harms the health of surrounding people, but also becomes an important pollution source of urban atmosphere, and the accurate detection of the catering oil smoke by using an oil smoke detector is a necessary basic link for treating the oil smoke.
The chinese patent publication No. CN109856023A discloses an oil smoke detection device, which includes a sampling unit, a processing module, a light emitting module, and a light receiving module, where the light receiving module and the light emitting module are installed at different sides of the sampling unit, the light receiving module includes a sensing unit and a lens, the lens is arranged between a detection cavity of the sampling unit and the sensing unit, the processing module is connected with the sensing unit, the light receiving module is used to receive light scattered by oil smoke, and the sampling unit is arranged outside an oil smoke pipeline and communicated with the oil smoke pipeline.
The above prior art solution has the following drawbacks: the above-mentioned patent directly uses the laser instrument to detect, because the oil smoke has certain adhesion nature, after a period, must lead to the fact the pollution to detecting the chamber to lead to the accuracy decline of data.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide catering industry oil smoke detection equipment which has the advantage of improving the detection accuracy.
The second purpose of the invention is to provide a catering industry oil smoke detection method which has the advantage of improving detection accuracy.
The above object of the present invention is achieved by the following technical solutions:
a catering industry oil smoke detection device comprises a box body and a box cover detachably connected with the box body, wherein a sampling pipe is connected onto the box body, one end, far away from the box body, of the sampling pipe is connected with a sampling head, one end, close to the box body, of the sampling pipe is connected with a first tee joint, one end, far away from the sampling pipe, of the first tee joint is respectively connected with a first air inlet pipe and a second air inlet pipe, two independent detection chambers are arranged in the box body, the first air inlet pipe and the second air inlet pipe are respectively communicated with the two detection chambers, one sides, opposite to the first air inlet pipe, of the two detection chambers are respectively communicated with a first air outlet pipe and a second air outlet pipe, one ends, far away from the detection chambers, of the first air outlet pipe and the second air outlet pipe are connected with a second tee joint, one end, far away from the first air outlet pipe, of the second tee, laser head, convex lens and photoelectric sensor are set gradually the interval along perpendicular air current direction in the detection chamber, still be provided with the controller of being connected with laser head, photoelectric sensor electricity in the box, be provided with the washing subassembly that is used for wasing convex lens and detects the indoor wall in the box.
Through adopting above-mentioned technical scheme, after oil smoke check out test set used a period, convex lens and detection room inner wall can be stained with certain oil smoke, before the detection, washs convex lens and detection room inner wall through wasing the subassembly, then detects to improve and detect the accuracy. When the cleaning is carried out, the cleaning can be carried out periodically after a certain number of times of detection, or the cleaning can be carried out when the detection result exceeds the upper limit and the lower limit of the detection.
The specific detection process is as follows: the sampling head is stretched into a smoke exhaust pipeline to be detected, an air suction pump is started, so that oil smoke gas enters a first air inlet pipe and a second air inlet pipe through the sampling pipe, then respectively enters two detection chambers, then is converged into an exhaust pipe from a first air outlet pipe and a second air outlet pipe, and clean air is exhausted into the atmosphere after the filtering action of a filter; and simultaneously starting the laser head and the photoelectric sensor, respectively detecting the oil smoke concentration, the non-methane total hydrocarbon and the particulate matters in the two detection chambers, and outputting detection data after the detection is finished. Because the invention adopts two detection chambers to detect simultaneously, two items of oil smoke concentration, non-methane total hydrocarbon and particulate matter can be detected by sampling once, and the detection speed is high; in addition, the detected oil smoke gas is filtered by the filter and then discharged by the suction pump, and the filter can play a role in protecting the suction pump.
The present invention in a preferred example may be further configured to: a sampling valve is arranged on one side of the sampling pipe close to the first air inlet pipe, an exhaust valve is arranged on one side of the exhaust pipe close to the first air outlet pipe, the cleaning component comprises a cleaning box, a cleaning pump, a liquid outlet pipe, a return pipe, a liquid outlet valve and a return valve, the cleaning box is fixedly connected with the box body, one end of the liquid outlet pipe is communicated with the box body, the other end of the return pipe is connected with a section of the sampling pipe between the sampling valve and the first air inlet pipe, the cleaning pump is connected with the liquid outlet pipe, one end of the return pipe is communicated with the cleaning box, the other end of the first exhaust pipe is communicated with a section of the exhaust pipe between the first exhaust pipe and the exhaust valve, the liquid outlet valve is connected with the liquid outlet pipe, the backflow valve is connected with the backflow pipe, a liquid feeding opening is formed in the top of the box body, a liquid feeding cover is detachably connected to the liquid feeding opening, a liquid discharging opening is formed in the bottom of the box body, and a liquid discharging cover is detachably connected to the liquid discharging opening.
Through adopting above-mentioned technical scheme, when needs wash convex lens and detection room inner wall, close sample valve and discharge valve, open out liquid valve and backwash valve, open the scavenging pump, wash the cleaner of incasement and flow in first intake pipe and second intake pipe from the drain pipe, the subdividing gets into two detection rooms respectively, wash convex lens and detection room inner wall, then pass through first outlet duct and second outlet duct entering back flow, finally flow back to the washing incasement, the circulation is after several times, open the flowing back lid, discharge the waste liquid, then close out liquid valve and backwash valve, open sample valve and discharge valve, start the aspiration pump and inhale after clean air carries out suitable drying, can detect. The cleaning agent can be selected from commercially available oil fume cleaning agents, preferably residue-free oil fume cleaning agents, and can also be self-made cleaning agents.
The present invention in a preferred example may be further configured to: the filter screen can be dismantled in the box and be connected with, the filter screen separates the box for stock solution chamber and storage sediment chamber, the stock solution chamber communicates with the drain pipe, the storage sediment chamber communicates with the back flow.
Through adopting above-mentioned technical scheme, the cleaner is when the circulation, and the particulate matter filter screen filters, stays in storing up the sediment intracavity to make convex lens and the indoor wall of detection wash cleaner, improve and detect the accuracy.
The present invention in a preferred example may be further configured to: the box inner wall is seted up with filter screen sliding connection's spout, a lateral wall of box can be dismantled and be connected with the access door that is used for changing the filter screen.
Through adopting above-mentioned technical scheme, after using a period, the particulate matter of adhesion on the filter screen is more, and storage sediment chamber also needs the clearance, and at this moment, open the access door, pull out the filter screen, change or wash the filter screen, clear away the particulate matter of storage sediment intracavity, wash more thoroughly next time, further improve and detect the accuracy.
The present invention in a preferred example may be further configured to: the exhaust pipe is arranged between the exhaust valve and the filter, a blowing pump is arranged between the exhaust valve and the filter, a blowing opening of the blowing pump faces the exhaust valve, and an air inlet of the blowing pump is communicated with the atmosphere.
Through adopting above-mentioned technical scheme, in order to avoid using the aspirator pump to carry out the dry pollution filter, after finishing wasing, open the gas blowing pump, the gas blowing pump blows towards discharge valve direction to dry first intake pipe and second intake pipe, two detection rooms, convex lens, first outlet duct and second outlet duct reduce the influence to detecting, further improve and detect the accuracy.
The present invention in a preferred example may be further configured to: and the exhaust pipe is positioned between the exhaust valve and the filter and is provided with an electric heating wire.
Through adopting above-mentioned technical scheme, the heating wire can external power supply, makes the heating wire heat the air when opening the blowing pump, and the hot-air can accelerate dry speed, improves detection speed and accuracy.
The present invention in a preferred example may be further configured to: first intake pipe, second intake pipe, first outlet duct and second outlet duct all are connected through dismantling the subassembly with the detection room, can dismantle the subassembly and include nut cover and external screw thread pipe, external screw thread pipe and detection room intercommunication, the nut cover rotates with first intake pipe, second intake pipe, first outlet duct and second outlet duct respectively to be connected, nut cover and external screw thread pipe threaded connection, the detection room passes through the screw with the box and can dismantle the connection.
Through adopting above-mentioned technical scheme, it is more when the oil smoke in the detection room, when unable clean up, pull down the screw that detection room and box are connected, rethread nut cover and external screw pipe pull down the detection room, detect again behind the detection room of more renewing, the detection room of pulling down is unpacked apart the back and is carried out rinse thoroughly again, improves and detects the accuracy.
The present invention in a preferred example may be further configured to: the controller is electrically connected with a display screen and a printer.
By adopting the technical scheme, after the field detection is finished, the data is output to the display screen through the controller, and meanwhile, the report is directly printed out through the printer, so that the uniqueness of the detection result is ensured, and the detection result cannot be tampered.
The second purpose of the invention is realized by the following technical scheme:
a catering industry oil smoke detection method adopts catering industry oil smoke detection equipment as the first purpose, and comprises the following steps:
in the preparation stage, a cleaning assembly is adopted to clean the convex lens and the inner wall of the detection chamber;
in the sampling stage, a sampling head is stretched into a smoke exhaust pipeline to be detected, an air suction pump is started, so that oil smoke gas enters a first air inlet pipe and a second air inlet pipe through a sampling pipe, then respectively enters two detection chambers, then is converged into an exhaust pipe from a first air outlet pipe and a second air outlet pipe, and is filtered by a filter, and then clean air is exhausted into the atmosphere;
and in the detection stage, the laser head and the photoelectric sensor are simultaneously started, the two detection chambers respectively detect the oil smoke concentration, the non-methane total hydrocarbon and the particulate matters, and after the detection is finished, detection data are output.
By adopting the technical scheme, the convex lens and the inner wall of the detection chamber are cleaned by the cleaning assembly before detection, and then detection is carried out, so that the detection accuracy is improved.
In summary, the invention includes at least one of the following beneficial technical effects:
1. through setting up the cleaning assembly, after oil smoke check out test set used a period, convex lens and detection room inner wall can be stained with certain oil smoke, before the detection, washs convex lens and detection room inner wall through cleaning assembly, then detects to improve and detect the accuracy.
2. Through setting up the air pump and heating wire, after finishing wasing, open the air pump, the air pump blows towards discharge valve direction of blowing to dry first intake pipe and second intake pipe, two detection rooms, convex lens, first outlet duct and second outlet duct reduce the influence to the detection, and the heating wire can external power supply, makes the heating wire heat the air when opening the air pump, and the hot-air can accelerate dry speed, improves detection speed and accuracy.
3. Through setting up display screen and printer, after the witnessed inspections, data are exported the display screen through the controller, directly print out the report through the printer simultaneously, guarantee the uniqueness of testing result, can not tampered.
Drawings
Fig. 1 is a schematic structural view of a case cover in an open state according to a first embodiment;
FIG. 2 is a schematic diagram of an internal structure of the first embodiment after hiding a case cover, a display screen and a controller;
FIG. 3 is a top view of the hidden cover and half of the display screen of the first embodiment;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a perspective cross-sectional view taken along line B-B of FIG. 3, with the controller and display hidden;
fig. 6 is a partial sectional view taken along line C-C of fig. 3.
Reference numerals: 1. a box body; 2. a box cover; 3. a sampling tube; 4. a sampling head; 5. a first tee joint; 6. a first intake pipe; 7. a second intake pipe; 8. a detection chamber; 9. a first air outlet pipe; 10. a second air outlet pipe; 11. a second tee joint; 12. an exhaust pipe; 13. a filter; 14. a getter pump; 15. a laser head; 16. a convex lens; 17. a photosensor; 18. a controller; 19. a sampling valve; 20. an exhaust valve; 21. a cleaning tank; 22. cleaning the pump; 23. a liquid outlet pipe; 24. a return pipe; 25. a liquid outlet valve; 26. a reflux valve; 27. a liquid filling port; 28. a liquid feeding cover; 29. a liquid discharge port; 30. a liquid discharge cover; 31. a filter screen; 32. a liquid storage cavity; 33. a slag storage cavity; 34. a chute; 35. an access door; 36. an air blower; 37. an air blowing port; 38. an air inlet; 39. an electric heating wire; 40. a nut sleeve; 41. an externally threaded tube; 42. a display screen.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows: referring to fig. 1 and 2, the catering industry oil smoke detection device disclosed by the invention comprises a rectangular box body 1 and a box cover 2 detachably connected with the box body 1, specifically, one side edge of the box cover 2 is hinged with the box body 1 through a hinge, and the other side edge of the box cover 2 is connected with the box body 1 through a lock. Be connected with the sampling tube 3 of rubber material on the box 1, the one end that the box 1 was kept away from to sampling tube 3 is connected with sampling head 4 (see fig. 3), the one end that the sampling tube 3 is close to box 1 is connected with first tee bend 5, the one end that sampling tube 3 was kept away from to first tee bend 5 is connected with first intake pipe 6 and second intake pipe 7 respectively, box 1 has two independent detection room 8 towards the wall connection of case lid 2, first intake pipe 6 and second intake pipe 7 communicate with two detection room 8 respectively, two detection room 8 communicate respectively with one side that first intake pipe 6 is relative has first outlet duct 9 and second outlet duct 10, the one end that first outlet duct 9 and second outlet duct 10 keep away from detection room 8 is connected with second tee bend 11, the one end that first outlet duct 9 was kept away from to second tee bend 11 is connected with blast pipe 12, be connected with filter 13 on the blast pipe 12, filter 13 can adopt air cleaner 13 on the. The exhaust pipe 12 is connected to a suction pump 14 on a side of the filter 13 away from the second tee joint 11, and the exhaust pipe 12 penetrates the box 1 and communicates with the atmosphere. One side of the sampling pipe 3 close to the first air inlet pipe 6 is connected with a sampling valve 19, and one side of the exhaust pipe 12 close to the first air outlet pipe 9 is connected with an exhaust valve 20.
Referring to fig. 3 and 4, a laser head 15, a convex lens 16 and a photoelectric sensor 17 are fixedly connected to the detection chamber 8 at intervals in sequence along the vertical airflow direction, the convex lens 16 is hermetically connected with the inner wall of the box body 1, a controller 18 electrically connected with the laser head 15 and the photoelectric sensor 17 is further arranged in the box body 1, and in the embodiment, the controller 18 is a single chip microcomputer. The controller 18 is electrically connected with a display screen 42 and a printer (not shown in the figure), after field detection is finished, data is output to the display screen 42 through the controller 18, and meanwhile, a report is directly printed through the printer, so that the uniqueness of a detection result is ensured, and the detection result cannot be tampered.
The specific detection process is as follows: the sampling head 4 is extended into a smoke exhaust pipeline to be detected, the air suction pump 14 is started, so that oil smoke gas enters a first air inlet pipe 6 and a second air inlet pipe 7 through the sampling pipe 3, then respectively enters two detection chambers 8, then is converged into an exhaust pipe 12 from a first air outlet pipe 9 and a second air outlet pipe 10, and after the filtering action of a filter 13, clean air is exhausted into the atmosphere; and simultaneously, the laser head 15 and the photoelectric sensor 17 are started, the two detection chambers 8 respectively detect the oil smoke concentration, the non-methane total hydrocarbon and the particulate matters, and after the detection is finished, detection data are output. Because the invention adopts two detection chambers 8 to detect simultaneously, two items of oil smoke concentration, non-methane total hydrocarbon and particulate matter can be detected by sampling once, and the detection speed is high; in addition, the detected oil smoke gas is filtered by the filter 13 and then discharged by the suction pump 14, and the filter 13 can play a role in protecting the suction pump 14.
After the oil smoke detection equipment is used for a period of time, certain oil smoke is adhered to the inner walls of the convex lens 16 and the detection chamber 8, and therefore a cleaning assembly for cleaning the inner walls of the convex lens 16 and the detection chamber 8 is arranged in the box body 1. Before detection, the inner walls of the convex lens 16 and the detection chamber 8 are cleaned through the cleaning assembly and then detected, so that the detection accuracy is improved. The specific cleaning time can be selected to clean regularly after a certain number of times of detection, and can also be cleaned when the detection result exceeds the upper limit and the lower limit of detection.
Referring to fig. 2 and 5, the cleaning assembly includes a cleaning box 21, a cleaning pump 22, a liquid outlet pipe 23, a return pipe 24, a liquid outlet valve 25 and a return valve 26, the cleaning box 21 and the box 1 are fixedly connected through screws, one end of the liquid outlet pipe 23 is communicated with the box 1, the other end of the liquid outlet pipe 23 is connected with one section of the sampling pipe 3 between the sampling valve 19 and the first air inlet pipe 6, the cleaning pump 22 is connected with the liquid outlet pipe 23, one end of the return pipe 24 is communicated with the cleaning box 21, the other end of the return pipe is communicated with one section of the exhaust pipe 12 between the first air outlet pipe 9 and the exhaust valve 20, the liquid outlet valve 25 is connected with the liquid outlet pipe 23, the return valve 26 is connected with the return pipe 24, a liquid adding opening 27 is formed in the top of the box 1, the liquid adding opening 27 is in threaded connection. In this embodiment, the sampling valve 19, the exhaust valve 20, the liquid outlet valve 25 and the return valve 26 are all solenoid valves, and the solenoid valves are electrically connected to the controller 18, so as to realize automatic control.
When the inner walls of the convex lens 16 and the detection chamber 8 need to be cleaned, the sampling valve 19 and the exhaust valve 20 are closed, the liquid outlet valve 25 and the return valve 26 are opened, the cleaning pump 22 is opened, cleaning agents in the cleaning box 21 flow into the first air inlet pipe 6 and the second air inlet pipe 7 from the liquid outlet pipe 23, then respectively enter the two detection chambers 8, the inner walls of the convex lens 16 and the detection chambers 8 are cleaned, then flow into the return pipe 24 through the first air outlet pipe 9 and the second air outlet pipe 10, finally flow back into the cleaning box 21, after circulation is carried out for a plurality of times, the liquid discharge cover 30 is opened, waste liquid is discharged, then the liquid outlet valve 25 and the return valve 26 are closed, the sampling valve 19 and the exhaust valve 20 are opened, the air suction pump 14 is started to suck clean air for proper drying. The cleaning agent can be selected from commercially available oil fume cleaning agents, preferably residue-free oil fume cleaning agents, and can also be self-made cleaning agents. And the cleaning agent can be used for cleaning, and then clear water is added for cleaning, so that the cleaning is cleaner.
In order to avoid the pollution of the filter 13 by drying with the suction pump 14, the exhaust pipe 12 is provided with a blowing pump 36 between the exhaust valve 20 and the filter 13, a blowing port 37 of the blowing pump 36 faces the exhaust valve 20, and an inlet 38 of the blowing pump 36 is communicated with the atmosphere. The exhaust pipe 12 is provided with a heating wire 39 (located inside the marked part in the drawing) between the exhaust valve 20 and the filter 13, and the heating wire 39 may be externally connected with a power supply or electrically connected with the controller 18.
After the cleaning is finished, the air blowing pump 36 is opened, the air blowing pump 36 blows air towards the exhaust valve 20, and therefore the first air inlet pipe 6 and the second air inlet pipe 7, the two detection chambers 8, the convex lens 16, the first air outlet pipe 9 and the second air outlet pipe 10 are dried, the influence on detection is reduced, and the detection accuracy is further improved. When the blowing pump 36 is turned on and the heating wire 39 heats the air, the hot air can accelerate the drying speed, and the detection speed and accuracy can be improved.
Referring to fig. 5, in order to improve the cleanliness of cleaning, a filter screen 31 is detachably connected in the tank 1, the filter screen 31 divides the tank 1 into a liquid storage cavity 32 and a slag storage cavity 33, the liquid storage cavity 32 is communicated with the liquid outlet pipe 23, and the slag storage cavity 33 is communicated with the return pipe 24. When the cleaning agent is circulated, the particulate filter screen 31 filters and is left in the slag storage cavity 33, so that the convex lens 16 and the inner wall of the detection chamber 8 are cleaned more cleanly, and the detection accuracy is improved.
3 inside walls of box 1 offer with filter screen 31 sliding connection's spout 34, a side wall of box 1 can dismantle through the screw and be connected with the access door 35 that is used for changing filter screen 31, and in this embodiment, access door 35 is in same side with leakage fluid dram 29. After using a period, the particulate matter of adhesion is more on the filter screen 31, and storage sediment chamber 33 also needs the clearance, and at this moment, open access door 35, pull out filter screen 31, change or wash filter screen 31, clear away the particulate matter in the storage sediment chamber 33, wash more thoroughly next time, further improve the detection accuracy.
Referring to fig. 6, when the oil smoke in the detection chamber 8 is too much and cannot be cleaned up, the detection chamber 8 needs to be detached, therefore, the first air inlet pipe 6, the second air inlet pipe 7, the first air outlet pipe 9 and the second air outlet pipe 10 are connected with the detection chamber 8 through detachable components, the detachable components comprise a nut sleeve 40 and an external threaded pipe 41, the external threaded pipe 41 is communicated with the detection chamber 8, the nut sleeve 40 is respectively connected with the first air inlet pipe 6, the second air inlet pipe 7, the first air outlet pipe 9 and the second air outlet pipe 10 in a rotating manner, the nut sleeve 40 is in threaded connection with the external threaded pipe 41, and the detection chamber 8 is detachably connected with the box body 1 through screws. Firstly, the screw connecting the detection chamber 8 and the box body 1 is dismounted, then the detection chamber 8 is dismounted through the nut sleeve 40 and the external threaded pipe 41, the detection is carried out after the detection chamber 8 is replaced with a new detection chamber 8, and the dismounted detection chamber 8 is dismounted and then thoroughly cleaned, so that the detection accuracy is improved.
The implementation principle of the first embodiment is as follows: the sampling head 4 is extended into a smoke exhaust pipeline to be detected, a sampling valve 19 and an exhaust valve 20 are opened, a suction pump 14 is started, so that oil smoke gas enters a first air inlet pipe 6 and a second air inlet pipe 7 through a sampling pipe 3, then respectively enters two detection chambers 8, then converges into an exhaust pipe 12 from a first air outlet pipe 9 and a second air outlet pipe 10, and clean air is exhausted into the atmosphere after the filtering action of a filter 13; the laser head 15 and the photoelectric sensor 17 are started simultaneously, the two detection chambers 8 respectively detect the oil smoke concentration, the non-methane total hydrocarbon and the particulate matter, after the detection is finished, data are output to the display screen 42 through the controller 18, and meanwhile, a report is directly printed out through a printer, so that the uniqueness of a detection result is ensured, and the detection result cannot be tampered.
When the inner walls of the convex lens 16 and the detection chamber 8 need to be cleaned, the sampling valve 19 and the exhaust valve 20 are closed, the liquid outlet valve 25 and the return valve 26 are opened, the cleaning pump 22 is opened, the cleaning agent in the cleaning box 21 flows into the first air inlet pipe 6 and the second air inlet pipe 7 from the liquid outlet pipe 23 and then respectively enters the two detection chambers 8 to clean the inner walls of the convex lens 16 and the detection chambers 8, then the cleaning agent enters the return pipe 24 through the first air outlet pipe 9 and the second air outlet pipe 10 and finally returns to the cleaning box 21, after circulation for a plurality of times, the liquid discharge cover 30 is opened to discharge waste liquid, the liquid outlet valve 25 and the return valve 26 are closed, the sampling valve 19 and the exhaust valve 20 are opened, the electric heating wire 39 heats air while the air blowing pump 36 is opened, the air is sucked by the air blowing pump 36 from the atmosphere and blown toward the exhaust valve 20, and the hot air can accelerate drying speed, so as to dry the first air inlet, Two detection room 8, convex lens 16, first outlet duct 9 and second outlet duct 10 reduce the influence to detecting, further improve and detect the accuracy. When the oil smoke in the detection chamber 8 is more and cannot be cleaned up, the screw connecting the detection chamber 8 and the box body 1 is detached, the detection chamber 8 is detached through the nut sleeve 40 and the external threaded pipe 41, the detection is carried out after the detection chamber 8 is replaced with a new one, the detached detection chamber 8 is detached and then thoroughly cleaned, and the detection accuracy is improved.
Example two: a catering industry oil smoke detection method adopts catering industry oil smoke detection equipment as in the first embodiment, and comprises the following steps:
in the preparation stage, a cleaning component is adopted to clean the convex lens 16 and the inner wall of the detection chamber 8;
in the sampling stage, a sampling head 4 extends into a smoke exhaust pipeline to be detected, an air suction pump 14 is started, so that oil smoke gas enters a first air inlet pipe 6 and a second air inlet pipe 7 through a sampling pipe 3, then respectively enters two detection chambers 8, then converges into an exhaust pipe 12 from a first air outlet pipe 9 and a second air outlet pipe 10, and after the filtering action of a filter 13, clean air is exhausted into the atmosphere;
in the detection stage, the laser head 15 and the photoelectric sensor 17 are simultaneously started, the two detection chambers 8 respectively detect the oil smoke concentration, the non-methane total hydrocarbon and the particulate matter, after the detection is finished, detection data are output, the data are output to the display screen 42 through the controller 18, and meanwhile, a report is directly printed out through a printer, so that the uniqueness of a detection result is ensured, and the detection result cannot be tampered.
The implementation principle of the second embodiment is the same as that of the first embodiment, and the description thereof is omitted.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A catering industry oil smoke detection device comprises a box body (1) and a box cover (2) detachably connected with the box body (1), wherein a sampling pipe (3) is connected onto the box body (1), one end, far away from the box body (1), of the sampling pipe (3) is connected with a sampling head (4), the catering industry oil smoke detection device is characterized in that one end, close to the box body (1), of the sampling pipe (3) is connected with a first tee joint (5), one end, far away from the sampling pipe (3), of the first tee joint (5) is respectively connected with a first air inlet pipe (6) and a second air inlet pipe (7), two independent detection chambers (8) are arranged in the box body (1), the first air inlet pipe (6) and the second air inlet pipe (7) are respectively communicated with the two detection chambers (8), and one sides, opposite to the first air inlet pipe (6), of the two detection chambers (8) are respectively communicated with a first air outlet pipe (9) and, the one end that detection room (8) were kept away from in first outlet duct (9) and second outlet duct (10) is connected with second tee bend (11), the one end that first outlet duct (9) were kept away from in second tee bend (11) is connected with blast pipe (12), be provided with filter (13) on blast pipe (12), one side that second tee bend (11) were kept away from in blast pipe (12) is located filter (13) is connected with aspirator pump (14), it has set gradually laser head (15), convex lens (16) and photoelectric sensor (17) along perpendicular air current direction to separate in proper order in detection room (8), still be provided with controller (18) of being connected with laser head (15), photoelectric sensor (17) electricity in box (1), be provided with the washing subassembly that is used for wasing convex lens (16) and detection room (8) inner wall in box (1).
2. Catering oil smoke detection equipment according to claim 1, wherein one side of the sampling pipe (3) close to the first air inlet pipe (6) is provided with a sampling valve (19), one side of the exhaust pipe (12) close to the first air outlet pipe (9) is provided with an exhaust valve (20), the cleaning component comprises a cleaning box (21), a cleaning pump (22), a liquid outlet pipe (23), a return pipe (24), a liquid outlet valve (25) and a return valve (26), the cleaning box (21) is fixedly connected with the box body (1), one end of the liquid outlet pipe (23) is communicated with the box body (1), the other end of the liquid outlet pipe is connected with a section of the sampling pipe (3) between the sampling valve (19) and the first air inlet pipe (6), the cleaning pump (22) is connected with the liquid outlet pipe (23), one end of the return pipe (24) is communicated with the cleaning box (21), and the other end of the exhaust pipe (12) is located a section between the first air outlet pipe (9) and the exhaust valve (20) The intercommunication, drain valve (25) are connected with drain pipe (23), return valve (26) are connected with back flow (24), filling opening (27) have been seted up at box (1) top, filling opening (27) can be dismantled and be connected with liquid feeding lid (28), leakage fluid dram (29) have been seted up to box (1) bottom, leakage fluid dram (29) can be dismantled and be connected with flowing back lid (30).
3. Catering industry oil smoke detection equipment according to claim 2, wherein a filter screen (31) is detachably connected in the box body (1), the filter screen (31) divides the box body (1) into a liquid storage cavity (32) and a slag storage cavity (33), the liquid storage cavity (32) is communicated with the liquid outlet pipe (23), and the slag storage cavity (33) is communicated with the return pipe (24).
4. Catering oil smoke detection equipment according to claim 3, wherein the inner wall of the box body (1) is provided with a sliding groove (34) connected with the filter screen (31) in a sliding manner, and one side wall of the box body (1) is detachably connected with an access door (35) for replacing the filter screen (31).
5. Catering lampblack detection equipment according to claim 2, wherein a blowing pump (36) is arranged between the exhaust valve (20) and the filter (13) on the exhaust pipe (12), a blowing port (37) of the blowing pump (36) faces the exhaust valve (20), and an air inlet (38) of the blowing pump (36) is communicated with the atmosphere.
6. Catering lampblack detection device according to claim 5, characterized in that an electric heating wire (39) is arranged between the exhaust valve (20) and the filter (13) in the exhaust pipe (12).
7. The catering trade oil smoke detection equipment according to claim 1, wherein the first air inlet pipe (6), the second air inlet pipe (7), the first air outlet pipe (9) and the second air outlet pipe (10) are connected with the detection chamber (8) through detachable components, the detachable components comprise a nut sleeve (40) and an external threaded pipe (41), the external threaded pipe (41) is communicated with the detection chamber (8), the nut sleeve (40) is respectively connected with the first air inlet pipe (6), the second air inlet pipe (7), the first air outlet pipe (9) and the second air outlet pipe (10) in a rotating mode, the nut sleeve (40) is in threaded connection with the external threaded pipe (41), and the detection chamber (8) is detachably connected with the box body (1) through screws.
8. Catering cooking fume detection device according to claim 1, characterised in that the controller (18) is electrically connected with a display screen (42) and a printer.
9. A catering industry oil smoke detection method, which is characterized in that catering industry oil smoke detection equipment as in any one of claims 1-8 is adopted, and comprises the following steps:
in the preparation stage, a cleaning component is adopted to clean the convex lens (16) and the inner wall of the detection chamber (8);
in the sampling stage, a sampling head (4) extends into a smoke exhaust pipeline to be detected, an air suction pump (14) is started, so that oil smoke gas enters a first air inlet pipe (6) and a second air inlet pipe (7) through a sampling pipe (3), then respectively enters two detection chambers (8), then converges into an exhaust pipe (12) from a first air outlet pipe (9) and a second air outlet pipe (10), and after the filtering action of a filter (13), clean air is exhausted into the atmosphere;
and in the detection stage, a laser head (15) and a photoelectric sensor (17) are simultaneously started, two detection chambers (8) respectively detect the oil smoke concentration, the non-methane total hydrocarbon and the particulate matters, and after the detection is finished, detection data are output.
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