A kind of formaldehyde pernicious gas intelligent testing and warning systemTechnical field
The present invention relates to monitoring harmful gases alarm technique fields, and in particular to a kind of formaldehyde pernicious gas intelligent measurement reportAlert system.
Background technique
Formaldehyde belongs to widely used, the public chemical products of simple production process, raw material supply abundance.It is Downstream Products of MethanolTrunk in tree, world's annual output is at 25,000,000 tons or so, and 30% or so methanol is all used to produce formaldehyde, but formaldehyde can be by roomInterior high-ratio surface material adsorbs enrichment, releases again when room temperature increases, and aggravates polluting effect.China " roomInterior air quality standard " provide that the limit value of two class civil building engineering formaldehyde in indoor air is 0.10mg/m3, one kind is civilian to buildThe limit value for building engineering formaldehyde in indoor air is 0.08mg/m3, one type civil building engineering includes: house, hospital, schoolClassroom, old building, kindergarten.
Though existing formaldehyde alarm system can realize PARA FORMALDEHYDE PRILLS(91,95) detection, alarm, formaldehyde is when detecting, especially big in dustPlace, detector are easily stained with dust to reduce detection efficiency, and Chinese patent literature publication number CN109596781A is disclosedA kind of indoor formaldehyde monitor based on Internet of Things, belongs to monitoring device technical field, solves existing indoor formaldehyde measurementInstrument is easy absorption dust in outer surface, is to be easy to appear error so as to cause measurement, affects us to indoor air qualityThe problem of judgement；Its technical characteristic is: including shell, monitor controller and formaldehyde monitor, the lower part of the housing setting branchPedestal is supportted, first hydraulic cylinder, the first hydraulic cylinder upper end and the housing lower surface interposition are installed in support base upper surfaceWelding is set, battery is set on the right side of the housing cavity, monitor controller, housing cavity activity are set below the batteryFormaldehyde monitor is set, which cannot be used in the big place of dust, and the big local detector of dust is stained with dust, influences detection effectFruit.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of formaldehyde pernicious gas intelligenceDetect alarm system.
Technical solution: to achieve the above object, the invention provides the following technical scheme:
A kind of formaldehyde pernicious gas intelligent testing and warning system, including formaldehyde examination device, control system and monitoring alarmSystem；The formaldehyde examination device includes pedestal, and base bottom is equipped with wheel, and pedestal is equipped with protection box body, protects box body topPortion is opening-like, and protection box body bottom is equipped with cylinder, and cylinder free end is connect with detection box, and detection box side is equipped with air inletMouthful, the other side be equipped with can closing air outlet, air inlet is equipped with basket strainer, partition is equipped in detection box, and partition will test caseBody is divided into dedusting chamber and test chamber, and in being symmetrically arranged with the first driving motor in test chamber, the first driving motor exports to be connected partitionThere is screw rod, spiral shell block is arranged on two screw rods, two spiral shell blocks are connected with movable plate jointly, and movable plate is equipped with ash by basket strainer sideDirt processing mechanism, partition middle are equipped with air-vent, are equipped with air inducing at air-vent and fan, be equipped with and collect at the top of the detection boxCase, collecting box are connected to air blower, and air blower is connected to by collecting pipe with the intracavitary collecting hood of dedusting, and first is equipped in the test chamberAldehyde detector；
The control system includes that comparator, MCU module and alarm difference block, formaldehyde examination device output end pass through ratioIt is connect compared with device with MCU module, MCU module output end is connect with alarm difference block, and alarm difference block transmits MCU moduleData are compared with preset value, are transmitted further to monitoring and alarming system, monitoring and alarming system include processing module, alarm module andDisplay module, the processing module, for controlling dust on processing filter screen, alarm module reaches pre- for content of formaldehyde concentrationIf value carries out alert process, display module, for showing the concentration of formaldehyde numerical value of formaldehyde examination device measurement.
Be as further scheme of the invention: formaldehyde examination device can be detected concentration of formaldehyde number by the MCU moduleIt, can also be by amount of dust on filter screen compared with difference block of alarming, when formaldehyde is examined compared with setting numerical value with alarm difference blockIt surveys device detection concentration of formaldehyde data and is greater than alarm difference block setting data, monitoring and alarming system is reported by alarm moduleAlert processing has served as dust on filter screen amount and has been greater than alarm difference block setting numerical value, and processing module controls the first driving motor, at dustReason mechanism handles dust.
Be as further scheme of the invention: cylinder free end two sides pass through first connecting rod, the second company respectivelyBar is connect with the first telescopic rod, the second telescopic rod.
Be as further scheme of the invention: the screw rod and detection box contact position are equipped with bearing.
Be as further scheme of the invention: the detection box two sides offer limiting slot, are equipped in limiting slotLimited block, limited block are connect with buffer bar, and two buffer bar tops are connect with shield jointly, and shield two sides are equipped with wear-resistant pad, resistance toMill pad is shown consideration for protecting box closes setting.
Be as further scheme of the invention: the limited block bottom end is connect by buffer spring with limiting slot.
Be as further scheme of the invention: the dust processing mechanism includes installs case, installs case and movable plateConnection, installs case is interior to be equipped with the second driving motor, and the second driving motor output shaft is connected with gear, wheel and rack connection, toothBoth ends pass through installs case and are equipped with installing port, and connect with bar is coordinated, and two coordination bars are connected with dust removal brush jointly.
It is as further scheme of the invention: is equipped with sliding slot in the installs case, slidably connects sliding block in sliding slot,Sliding block is connect with rack gear side.
The utility model has the advantages that it is of the invention, it has the beneficial effect that:
1) formaldehyde examination device can be detected concentration of formaldehyde data by MCU module of the present invention and alarm difference block sets numerical valueCompare, it can also be by amount of dust on filter screen compared with difference block of alarming, when formaldehyde examination device detection concentration of formaldehyde data are bigData are set in alarm difference block, monitoring and alarming system carries out alert process by alarm module, it is big to have served as dust on filter screen amountNumerical value is set in alarm difference block, processing module controls the first driving motor, dust processing mechanism handles dust, opensDynamic first driving motor, screw rod rotation, spiral shell block is mobile, realizes movable plate close to dedusting by the first driving motor positive and negative rotation of controlNet starts the second driving motor, gear rotation, wheel and rack engagement, so that gear 1702 is moved up and down in installing port, thenDust removal brush ` can clean basket strainer；In basket strainer cleaning process, start air blower, dust enters receipts by collecting hood, collecting pipeIn header.
2) the first telescopic rod and the second telescopic rod cooperate cylinder free end, during detection box can be made to move up moreStablize, so that will test cabinet stabilization is moved to detecting state；When methylene oxide detecting instrument stops detecting, shield and the protecting box bodily formAt sealing space, to guarantee that detection box is not destroyed in protecting box body by external interference, the service life of device is improved, togetherWhen in guard box body, not will receive dust interference, thus for a long time place still can precisely detect.
Detailed description of the invention
Fig. 1 is a kind of formaldehyde pernicious gas intelligent testing and warning system figure of the present invention；
Fig. 2 is formaldehyde examination apparatus structure schematic diagram of the present invention；
Fig. 3 is schematic diagram when formaldehyde examination device of the present invention works；
Fig. 4 is enlarged structure schematic diagram at A in Fig. 2 of the present invention；
Fig. 5 is dust processing mechanism structural schematic diagram of the present invention.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
If attached drawing 1-5 shows, a kind of formaldehyde pernicious gas intelligent testing and warning system in the embodiment of the present invention, including formaldehyde inspectionSurvey device 1, control system and monitoring and alarming system；The formaldehyde examination device 1 includes pedestal 2, and 2 bottom of pedestal is equipped with wheel 3,Pedestal 2 is equipped with protection box body 4, and 4 top of protection box body is opening-like, and protection 4 bottom of box body is equipped with cylinder 5,5 free end of cylinderConnect with detection box 6,6 side of detection box is equipped with air inlet 7, the other side be equipped with can closing air outlet 8, set at air inlet 7There is basket strainer 9, is equipped with partition 10 in detection box 6, partition 10 will test cabinet 6 and be divided into dedusting chamber 11 and test chamber 12, partition10 in being symmetrically arranged with the first driving motor 13 in test chamber 12, the output of the first driving motor 13 is connected with screw rod 14, two screw rodsSpiral shell block 15 is arranged on 14, two spiral shell blocks 15 are connected with movable plate 16 jointly, and movable plate 16 is equipped at dust by 9 side of basket strainerMechanism 17 is managed, 10 middle of partition is equipped with air-vent 18, and air inducing fan 19 is equipped at air-vent 18, is set at the top of the detection box 6There is collecting box 20, collecting box 20 is connected to air blower 21, and air blower 21 is connected by collecting hood 23 in collecting pipe 22 and dedusting chamber 11It is logical, methylene oxide detecting instrument 24 is equipped in the test chamber 12；Start the first driving motor 13, screw rod 14 rotates, and spiral shell block 15 is mobile, leads toIt crosses control 13 positive and negative rotation of the first driving motor and realizes that movable plate 16 close to basket strainer, completes dust removing effects；Basket strainer 9 is arranged, and protectsDemonstrate,proving dust will not enter in test chamber 12, so that 24 detection effect of methylene oxide detecting instrument is improved, in 9 cleaning process of basket strainer, startingAir blower 21, dust are entered in collecting box 20 by collecting hood 23, collecting pipe 22；
The control system includes that comparator, MCU module and alarm difference block, formaldehyde examination device output end pass through ratioIt is connect compared with device with MCU module, MCU module output end is connect with alarm difference block, and alarm difference block transmits MCU moduleData are compared with preset value, are transmitted further to monitoring and alarming system, monitoring and alarming system include processing module, alarm module andDisplay module, the processing module, for controlling dust on processing filter screen, alarm module reaches pre- for content of formaldehyde concentrationIf value carries out alert process, display module, for showing the concentration of formaldehyde numerical value of formaldehyde examination device measurement；Monitoring and alarming systemWhen amount of dust can be reached to alert difference block setting numerical value, the first driving motor 13 of control, the second driving motor, air blower 21 are transportedTurn to realize that the dedusting on basket strainer, dedusting terminate to guarantee that basket strainer is clean, next methylene oxide detecting instrument 24 is facilitated to continue to test；
Formaldehyde examination device can be detected concentration of formaldehyde data compared with alarm difference block setting numerical value by MCU module,It can be by amount of dust on filter screen compared with difference block of alarming, when formaldehyde examination device detection concentration of formaldehyde data are poor greater than alarmingIt is worth module and sets data, monitoring and alarming system carries out alert process by alarm module, and it is poor greater than alarming to have served as dust on filter screen amountIt is worth module and sets numerical value, processing module controls the first driving motor, dust processing mechanism handles dust；
5 two sides of cylinder free end pass through first connecting rod 26, second connecting rod 27 and the first telescopic rod 28, the second telescopic rod respectively29 connections, the first telescopic rod 28 and the second telescopic rod 29 cooperate cylinder free end 5, and detection box 6 can be made to move up processIn it is more stable, thus will test cabinet 6 stabilization be moved to detecting state；
Screw rod 14 and 6 contact position of detection box are equipped with bearing 30.
6 two sides of detection box offer limiting slot 31, are equipped with limited block 32, limited block 32 and buffer bar 33 in limiting slot 31Connection, two 33 tops of buffer bar are connect with shield 34 jointly, and 34 two sides of shield are equipped with wear-resistant pad 35, wear-resistant pad 35 and protecting boxThe fitting setting of body 4, when stopping detection, shield 34 and protection box body 4 form sealing space, to guarantee that detection box 6 is being protectedIt is not destroyed by external interference in shield box body 4, improves the service life of device, while in protection cabinet 4, it is dry not will receive dustIt disturbs, so that place still can precisely detect for a long time；
32 bottom end of limited block is connect by buffer spring 36 with limiting slot 31.
Dust processing mechanism 17 includes installs case 1701, and installs case 1701 connect with movable plate 16, sets in installs case 1701There is the second driving motor, the second driving motor output shaft is connected with gear 1702, and gear 1702 is connect with rack gear 1703, rack gear1703 both ends pass through installs case 1701 and are equipped with installing port, and connect with bar 1704 is coordinated, and two coordination bars 1704 are connected with jointlyDust removal brush `1705；Start the second driving motor, gear 1702 rotates, and gear 1702 is engaged with rack gear 1703, thus gear 1702It is moved up and down in installing port, then dust removal brush `1705 can clean basket strainer 9；
It is equipped with sliding slot 1706 in installs case 1701, slidably connects sliding block 1707, sliding block 1707 and rack gear in sliding slot 1706The connection of 1702 sides.
The working principle of the invention is: starting cylinder 5,5 free end of cylinder are connect with detection box 6, the first telescopic rod 28Cooperate cylinder free end 5 with the second telescopic rod 29, detection box 6 can be made more stable during moving up, to will testCabinet 6, which is stablized, is moved to detecting state, and starting air inducing fan 19, external air flow enters test chamber 12, test chamber 12 by air inlet 7Interior to be equipped with methylene oxide detecting instrument 24,24 PARA FORMALDEHYDE PRILLS(91,95) concentration of methylene oxide detecting instrument is detected, and basket strainer 9, basket strainer are equipped at air inlet 7The filtering of 9 pairs of dusts has served as dust on filter screen amount and has been greater than alarm difference block setting numerical value, processing module control the first driving motor,Dust processing mechanism handles dust, starts the first driving motor 13, and screw rod 14 rotates, and spiral shell block 15 is mobile, passes through controlFirst driving motor, 13 positive and negative rotation realizes that movable plate 16 close to basket strainer, starts the second driving motor, gear 1702 rotates, gear1702 engage with rack gear 1703, so that gear 1702 is moved up and down in installing port, then dust removal brush `1705 can be clear to basket strainer 9It sweeps, in 9 cleaning process of basket strainer, starts air blower 21, dust is entered in collecting box 20 by collecting hood 23, collecting pipe 22, reachedTo dust removal effect, facilitate continue to use next time.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the artFor member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answeredIt is considered as protection scope of the present invention.