CN205139052U - Darkroom formula security installations - Google Patents

Abstract

The utility model provides a darkroom formula security installations. Equipment is including the casing and the inside part of casing that constitute inclosed darkroom. The inside part of casing passes through the connecting tube or connects the intercommunication, includes: sampling system, sampling system include the sample collection device and are used for being conveyed to the sample collection device so that the conveyer of inspection examining the object, sample processing system for concentrating sample and analytic sample, and detecting system, through gas chromatography - ion mobility spectrometer (GC -IMS) or solitary ion mobility register for easy reference (IMS) sample detecting composition. The utility model discloses a security installations can make things convenient for, fast, effectively the sample and the accuracy detect fast to the bale breaking does not destroy the quarantine objects article, is suitable for the quick examination detection to prohibited articles such as airport, customs.

Description

Darkroom formula rays safety detection apparatus

Technical field

The utility model relates to safety testing field, particularly, relates to the darkroom formula luggage security checkout equipment based on IMS and coupling technique thereof.

Background technology

Make rapid progress in science and technology, economic globalization deepens continuously the society of development, and the social concerns such as the attack of terrorism, food security, medical and health safety, drug smuggling have a strong impact on and threaten the life of people, property and healthy and safe.For safeguarding normal civil order, ensure the life of the people, property, healthy and safe, in recent years based on the detection technique of various Cleaning Principle and relevant device flourish like the mushrooms after rain.

Wherein, ion mobility spectrometry (IMS) technology is simple, highly sensitive because having structure, the feature that analysis speed is fast and be widely used in detection or the monitoring of the aspects such as chemical warfare agent, drugs, explosive and environment.

Due to IMS superior performance, the various equipment based on IMS technology and coupling technique thereof also just come onto stage at detection fields such as food, cosmetics and medical and health gradually.Gas chromatography-ion mobility spectrometry (GC-IMS) coupling technique takes full advantage of the outstanding separation characteristic of GC and IMS responds fast, highly sensitive advantage, not only efficiently solve the cross sensitivity problem existed when the low distinguishing ability of GC and IMS detect potpourri, but also chromatographic retention, the checking matter ion drift time in migration tube and the signal intensity of the induction of analyte finally on Faraday plate can be obtained, the three-dimensional plot spectrum information of the checking matter obtained with this can effectively be differentiated the sample of complicated component accurately.At the fight against terrorism and violence in future, drug smuggling, environmental monitoring, food security, the field GC-IMS detection techniques such as medical and health supervision will play powerful effectiveness.

But traditional IMS and coupling equipment thereof mainly comprise the modes such as hand-held, portable, desk-top and gate-type, sample inconvenience in actual applications, cause detection efficiency low; Or need to destroy detected material; For the inspected object that luggage case and bag are such, need to unpack, very inconvenient.

Expect that the efficiency of the product collected specimens of IMS or its coupling equipment is high, picking rate is fast, need not destructive sample when ensureing degree of accuracy, can realize on-the-spot fast inspection when not unpacking; Further, expect the occasions such as existing critical point can have detect chemical in characteristic and adaptable to the goods size fast device of detection speed.

Utility model content

Given this, it is at least part of that the purpose of this utility model is to provide a kind of rays safety detection apparatus to solve the problem, can when ensureing degree of accuracy fast, destructive sampling need not carry out site inspection.

According to the utility model on the one hand, a kind of darkroom formula rays safety detection apparatus is provided, comprise and form the airtight housing in darkroom and the parts of enclosure interior, the parts of enclosure interior comprise: sampling system, sampling system comprise sample collecting apparatus and in order to tested object is sent to sample collecting apparatus so as to check conveyer; Sample processing system, for concentrating sample and parsing sample; And detection system, detect sample composition by ion mobility spectrometry equipment; Wherein, sampling system, sample processing system and detection system by connecting tube or fittings, complete the collection of sample, process and detection in the inherent housing of the housing tested object carrying sample being admitted to form darkroom.

This darkroom formula luggage security check equipment can be on-the-spot fast inspection provide one easily and fast, effective sampling and sample injection method and detection means fast and accurately, achieve and do not unpack, do not destroy quick, the trace detection under article situation to be checked.Be very suitable for airport, customs etc. to drugs, explosive, the violated chemical reagent of volatility, solid surface are infected with and the rapid screening of other prohibited items detects.

In order to reach above-mentioned utility model object, the technical solution of the utility model can also realize as follows: analytical equipment device goes for the equipment such as fast GC-IMS, IMS, GC-IMS-MS.

The advantage of the utility model equipment is:

Equipment adopts the wind spout sampling system of closed, whole body sampling can be carried out to tested row bag, simultaneously because wind spout sample mode has and powerful sucks acting force, so the collecting efficiency of solid granule shape sample on bag surface of being expert to the volatility of carrying secretly in row bag, half volatile sample or adhesion greatly can be improved in sampling process, achieve not open in bag situation the effumability half volatile material carried in row bag and surface contamination traces of solids material Direct Sampling;

Adopt this darkroom formula luggage security check equipment can to concentrate the sample gathered when sample detection, the requirement of the Monitoring lower-cut to IMS detecting device can be reduced, reduce development difficulty and the capital equipment of equipment device; Positive and negative ion can be realized detect simultaneously, positive and negative collection of illustrative plates is established association, compare to monotype and improve detection speed; This darkroom formula luggage security check equipment adopts full-time pre-concentration sample collection technology, greatly can improve the collecting efficiency of sample, improves the detection efficiency of equipment device.

Compare to the conventional row bag rays safety detection apparatus based on X ray, this darkroom formula luggage security check equipment has higher detection spirit lightness to the volatility carried in row bag, half volatile prohibited items, the kind of carrying violated product can be accurately known under situation of not unpacking, also eliminate traditional drawback detecting the artificial subjective judgement of main dependence based on X ray rays safety detection apparatus simultaneously, compensate for the defect of X ray rays safety detection apparatus in coherent detection field.

Accompanying drawing explanation

In order to make content described in the utility model more easily be understood, below in conjunction with accompanying drawing and specific implementation method, the utility model is described further, in the accompanying drawings:

Fig. 1 is this darkroom formula luggage security check equipment sampling process schematic diagram of the present utility model;

Fig. 2 is this darkroom formula luggage security check equipment sampling Thermal desorption sample introduction schematic diagram of the present utility model;

Fig. 3 is this darkroom formula luggage security check equipment side schematic view of the present utility model;

Fig. 4 is this darkroom formula luggage security check equipment eddy flow boot disk of the present utility model (when forming complete circle boot disk) top cross-sectional view;

Description of symbols in Fig. 1,2,3,4:

Equlizing support;

Rays safety detection apparatus fuselage cover;

103 feed belts;

104 travelling belt facings;

105 eddy flow boot disk;

106 whirl hole;

107O shape O-ring seal;

108 tested row bags;

109 gas ductings;

110 wind guide chambers;

111 muffs;

112 inflator pumps;

113 pump-lines;

114 aspiration pumps;

115 heating filter screens;

116 bottom clamping nets;

117 semi-permeable diaphragms;

118 top clamping nets;

119 top leak lids;

120 sample collection connecting pipes;

121 sample collection connecting pipe heating and thermal insulation covers;

122 heating rods;

123 temp probes;

124 sample collection interfaces;

125 sampling asepwirator pump interfaces;

126 sampling asepwirator pumps;

127 high temperature resistant O-ring seals;

128 piston cylinders;

129 piston rods;

130 absorption screen drums;

131 mat insulations;

132 Thermal desorption chambeies;

133 bushing pipes;

134 carrier gas inlets;

135 shuntings/purge interface;

136MCC post;

137 heat conduction sheaths;

138 double mode ion mobility spectrometry equipment;

139 sampling carrier gas interfaces;

140 infrared sensors;

141 rolling screen door;

Embodiment

There is provided detailed reference to embodiment of the present utility model now, its example illustrates in the accompanying drawings, the element that digitized representation identical in figure is identical.For explaining that the following embodiment of the utility model will be described with reference to the drawings.

According to embodiment of the present utility model, a kind of darkroom formula rays safety detection apparatus based on IMS and coupling technique thereof, such as, based on darkroom formula luggage quick rays safety detection apparatus (as Fig. 1,2) of IMS and coupling technique thereof, comprises the housing forming airtight darkroom.Arrange multiple parts in enclosure interior, the parts of enclosure interior comprise: sampling system, sample processing system and specimen inspection system, and they are communicated with by the web member of such as connecting pipe or joint.

The parts of the enclosure interior of rays safety detection apparatus comprise such as tornado sampling cavity, full-time pre-concentration sampling thief, Thermal desorption chamber, chromatographic column, heat-insulation system, ion mobility spectrometry equipment etc.Darkroom of the present utility model formula luggage security check equipment adopts multiple equlizing support 101 to support rays safety detection apparatus fuselage cover 102 and body thereof, and preferred balance bracket adopts leg to have certain elasticity and flexible rubber sleeve steel column.Darkroom of the present utility model formula luggage security check equipment adopts travelling belt 103 to transmit tested row bag 108, provides support for tested row bag 108 simultaneously, and feed belt 103 is by reducing motor transmission.The travelling belt facing 104 coordinated with feed belt is installed in feed belt 103 both sides, the both sides of travelling belt facing 104 coordinate with travelling belt 103 and form fit structure, make travelling belt facing 104 allow travelling belt 103 to move and form hermetically-sealed construction with travelling belt 103 under the motionless state of travelling belt 103, so that whole darkroom forms sealed environment.Travelling belt facing 104 is formed by deformable material, comprise coboundary and lower limb, when sample collection, travelling belt 103 is out of service, due to negative pressure, travelling belt facing 104 is out of shape, its coboundary and lower limb bear against respectively and compress/bear against travelling belt 103, thus the air in the external world or other materials can not enter in space, darkroom between travelling belt 103 and travelling belt facing 104, reduce outer bound pair sample collection and analyze the interference detected.It will be recognized by those skilled in the art that and other can be set in other cases as required for transmitting the device of sample.Travelling belt facing 104 can also be other shapes.The part that the edge of such as travelling belt facing contacts with travelling belt 103 can comprise arch section, this arch section can use the soft material of similar silica type to be formed, when forming negative pressure in sampling cavity, arch section reclines travelling belt 103 edge, and compresses travelling belt 103 edge.In an embodiment of the present utility model, travelling belt facing 104 can also comprise the sheet shaped piece that can be out of shape, when travelling belt 103 moves, this sheet shaped piece allows travelling belt 103 to move, when rays safety detection apparatus sampling inside cavity forms negative pressure, the sheet shaped piece of travelling belt facing 104 is fitted in travelling belt 103 edge, and forms sealing because negative pressure is close on travelling belt 103 edge.Sheet shaped piece is preferably formed by gas impermeable material.Such as sheet shaped piece can be that the flexible materials such as elastomeric material are formed.In one embodiment, sheet shaped piece comprises sheet shaped piece and lower sheet shaped piece.

In an embodiment of the present utility model, the enclosure interior of rays safety detection apparatus also comprises additional nozzle 1061, and this additional nozzle 1061 is for jets of heated air stream.When hot-air blows to the article of such as tested row bag 108, hot-air makes the sample sticked on tested row bag 108 depart from or volatilization, thus improves the efficiency of sample collection.Further, additional nozzle 1061 better can purge and heating effect to obtain near tested row bag 108.Further, the direction that additional nozzle 1061 purges air-flow and wind spout inflate the direction close (not being contrary or relative) that entrance is blown, thus, additional nozzle 1061 purges air-flow can accelerate the formation of wind spout air-flow, and is conducive to collected specimens.In one embodiment, additional nozzle 1061 is multiple additional nozzles, and the airflow direction that additional nozzle 1061 purges complies with wind spout airflow direction, and the air-flow of nozzle 1061 injection place additional is like this conducive to accelerating wind spout air-flow.In one embodiment, the airflow direction that additional nozzle 1061 purges can not be identical with the direction of wind spout air-flow or close.

In other embodiments of the present utility model, the edge configuration groove of travelling belt 103, is positioned at central authorities or other parts at the edge of travelling belt 103, extends continuously along travelling belt 103.Travelling belt facing 104 comprises the raised line of the groove on the edge that can enter travelling belt 103.When entering the groove on the edge of travelling belt 103 under the effect in negative pressure of the raised line of travelling belt facing 104, travelling belt 103 and travelling belt facing 104 are formed and seal.In the present embodiment, preferably, the raised line of travelling belt facing 104 is that soft ground material or deformable material are formed.

The case side wall of the detector gate porch of rays safety detection apparatus is provided with infrared sensor 140, infrared sensor 140 detect tested row bag 108 enter completely rays safety detection apparatus sampling inside cavity time, reducing motor reduces speed now or out of service, travelling belt 103 slows down or stops, the rolling screen door 141 being distributed in cabinet entrance travelling belt and outlet travelling belt place hangs down, and whole chassis body forms airtight darkroom.

Darkroom of the present utility model formula luggage security check equipment comprises sampling system, sampling system comprise sample collecting apparatus and in order to tested object is sent to sample collecting apparatus so as to check conveyer.Sample collecting apparatus comprises sampling cavity, and sampling cavity has second end relative with first end of first end and sampling cavity, and wherein conveyer is positioned at first end, and cavity of sampling also comprises the sample export for discharging sample near the second end; Wherein, sampling cavity also comprises inflation entrance 106 and the exhausr port of the wall being positioned at sampling cavity, inflation entrance 106 is configured to be blown into selection air-flow in sampling cavity, exhausr port is configured to Exhaust Gas, to form tornado air-flow sampling in cavity together with inflation entrance 106, described tornado air-flow is along the spiral advance of first end to the second end from sampling cavity, and the sample that tested object carries thus is transferred near the second end by tornado air-flow.

Particularly, be distributed in case side wall and just form full circle shape with the eddy flow boot disk 105 in rolling screen door, inflation entrance 106 is arranged on eddy flow boot disk 105, as shown in Figure 4.The inwall of eddy flow boot disk 105 forms a part for sampling cavity inner wall, its shape of cross section is formed as taper as shown in Figure 1, the inwall of eddy flow boot disk 105 forms frusto-conical shape together with other parts of the inwall of sampling cavity thus, the small diameter circular end of frusto-conical internal wall is near the first end of cavity, and the large-diameter circular end of frusto-conical internal wall is near the second end.Sampling cavity can be other form, and such as more parts or cavity inner wall form frustoconical, and smaller diameter end is first end, and larger diameter end is the second end.

Darkroom forms rear inflator pump 112, aspiration pump 114 is started working, and inflator pump insufflation gas is inflated by inflation entrance 106 through gas ducting 109 in sampling cavity.Inflation entrance is arranged so that the inside surface in the axial admission direction and cavity inner wall of inflating entrance is close to tangent, and the axial admission direction of inflating entrance rolls tiltedly to sample export.The air-flow of discharging from the whirl hole 106 eddy flow boot disk 105 forms swirling eddy, while inflator pump 112, aspiration pump 114, these three bursts of strength of sampling asepwirator pump 126 under effect, forms sampling wind spout within the scope of darkroom.

According to embodiment of the present utility model, the wind guide chamber 110 that heating rod 122 and muff 111 and muff 111 are protected is set in the case side wall of rays safety detection apparatus.Wind guide chamber can be sampling cavity.Wind spout or spout air-flow are being heated by heating rod 122 and the wind guide chambers 110 of insulation cover 111 insulation and gas ducting are added the hot wind spout of thermosetting, and the powerful act of sucking of wind spout can pick up sticking to the gaseous sample that the effumability, the half volatile article that fill in the solid granule sample on tested row bag 108 surface or row bag discharge.In addition, hot wind spout is conducive to the quick volatilization promoting effumability, the violated sample of volatile in row bag, is conducive to sample collection and the detection of equipment device.Under spout wind action, quickly passed through by the test sample that hot wind spout picks up the heating filter screen 115 be arranged in wind guide chamber 110 inner space, and heated by the heating filter screen 115 of tool high temperature rapidly.Net is considered in heating can stop that large particulate matter enters on the one hand, prevent line clogging, on the other hand, the sample rolled by wind spout can be heated, especially can carry out heat temperature raising to solid granular sample rapidly and make it part volatilization, the sample volatilized together can enter in adsorber, detecting device and carries out analysis through semi-permeable diaphragm and detect with effumability sample.

Under the effect of aspiration pump 114, thermal current is discharged through pump-line 113, and hot gas with below heating filter screen 115 does not form convection current, can the tested row bag of effective guarantee from the threat of heat.The gas that effumability sample in tested row bag volatilizes directly can enter top funnel lid 119 space through bottom clamping net 116, semi-permeable diaphragm 117, top clamping net 118 after through heating filter screen 115, sample is infected with by not volatile solid then can volatilize portion gas sample under heating filter screen 115 rapidly heat effect, and the gaseous sample volatilized can pass bottom clamping net 116 again, semi-permeable diaphragm 117, top clamp net 118 and enter top funnel lid 119 space.Be provided with semi-permeable diaphragm at heating net and funnel top cover bottom, semi-permeable diaphragm adopts the clamping of two panels wire netting, can be used for semi-permeable diaphragm on the one hand and fixes, and semi-permeable diaphragm also can be prevented to be torn under powerful wind spout effect on the other hand.Semipermeable membrane material is used for the material that selective filter passes through.Semipermeable membrane material can stop other foreign-matter contaminations such as hydrone, amino molecule in inhaling air loading matter to enter, thus pollutes chromatographic column or the migration tube of rear end, and semi-permeable diaphragm also can limit the resolution of the formation raising equipment of cluster in addition.The sampling that this design of wind guide chamber makes equipment can realize volatility, half volatile and surface contamination simultaneously, has widened the selectivity to detection material.

According to embodiment of the present utility model, be provided with heating and thermal insulation system at sample collection pipeline, the pipeline that can effectively prevent the condensation sucking sample from even being caused by condensation pollutes.

The sample arrived in top funnel lid 119 space mixes with the sampling carrier gas flowed into from carrier gas interface 139 of sampling and arrives pre-concentration through sample collection connecting pipe 120, sample collection interface 124 effect being incorporated in asepwirator pump 126 of sampling and to sample adsorber in filler cap.Adopt full-time pre-concentration sampling adsorber, the full-time collection to sample can be realized, greatly can improve the detection efficiency of equipment device.

First the sampling carrier gas mixed gas comprising sample is transferred into sample processing system.Sample processing system is used for concentrating sample and resolves sample.Sample processing system comprises pre-concentration sampling adsorber, comprises for the absorption screen drum of concentrating sample and the piston rod for being sent by piston by the sample in absorption screen drum; With Thermal desorption chamber, at high temperature separating out the sample in absorption screen drum, and use suitable carrier gasses and sample mix.

The mixed gas comprising sample be sent to pre-concentration sampling adsorber absorption screen drum 130 and by the adsorbent in screen drum.Sample collection connecting pipe 120 is coated with sample collection connecting pipe heating and thermal insulation cover 121, and heating and thermal insulation cover can maintain high temperature in pipe, can effectively prevent sample from polluting pipeline at in-tube condensation.Under the continuous action of sampling asepwirator pump 126, the enrichment of sample in absorption screen drum 130 can be realized and concentrate.

After sample concentration completes, absorption screen drum 130 can be pushed into rapidly by the piston rod 129 of piston type adsorber under motor effect to be had in the Thermal desorption chamber 132 of high temperature, and preferred Thermal desorption chamber adopts the stainless steel of stable chemical nature or nickel-plated copper material to make.Preferably, pre-concentration sampling adsorber comprises two or more absorption screen drum, correspondingly, comprises multiple piston boit.

Be attracted in sample on adsorbent Thermal desorption chamber at high temperature and separated out rapidly, and brought in MCC post 136 by carrier gas after mixing with the carrier gas through preheating flowed into from carrier gas inlet 134 and carry out pre-separation, enter again after pre-separation completes in double mode ion mobility spectrometry equipment 138 and carry out detection and analyze.Adopt double mode Ion transfer Manifold technology, the on-line checkingi while of can realizing carrying out the ion of positive-negative polarity material, can improve the detection efficiency of equipment device.

Preferably piston cylinder 128, such as polytetrafluoro, the PEEK material of the coefficient of heat conductivity difference that absorption screen drum lower thermal barrier pad 131 adopts, effectively can completely cut off the heat transfer between Thermal desorption chamber 132 and adsorber, be conducive to sample adsorption in sample adsorption process.

Thermal desorption chamber 132 is provided with carrier gas and shunts/purge interface 135, and when MCC post 136 cannot receive biased sample gas completely, biased sample gas is discharged from shunting/purging interface 135; In addition, opening shunting/purging interface 135 completely can purge Thermal desorption chamber 132, can sample or impurity in discharge side, effectively can reduce the appearance of ghost peak in sub-sampling process.In Thermal desorption chamber 132, sealing embeds the glass bushing pipe 133 of stable chemical nature simultaneously, bushing pipe 133 can regularly replace, can ensure that sample gas does not contact with metal material on the one hand, react and the distortion of the detection sample caused thus and detection signal, also can stop that large particulate matter is fallen into chromatographic column and blocks chromatographic column on the other hand.

According to embodiment of the present utility model, heating filter screen 115 is set and not only can realizes especially realizing, to the heating of solid granular sample, making it to volatilize portion gas and through semi-permeable diaphragm, can also preventing large granular impurity from entering and blocking pipe in addition to sample heating.Semi-permeable diaphragm 117 can effectively stop other foreign-matter contaminations such as hydrone, amino molecule in inhaling air loading matter to enter, and effectively prevents the pollution of chromatographic column or migration tube, and the formation that simultaneously also can limit cluster improves the resolution of equipment device.

According to embodiment of the present utility model, sampling and sample introduction resolving in, high temperature resistant O-ring seals can effectively ensure being tightly connected between piston type adsorber and piston cylinder 128, can guarantee sample collection efficiency and sample introduction analyzing efficiency.Heat conduction sheath 137 1 aspect is for the protection of MCC136, and on the other hand also for MCC provides and Thermal desorption chamber 132, the sealed interface connected between double mode ion mobility spectrometry equipment 138, also helps external heating thermal circuit simultaneously and carry out heating and thermal insulation to MCC.Until sample be pushed to Thermal desorption chamber carry out Thermal desorption time, rolling screen door is opened, travelling belt 103 works, first tested row bag (A) is sent out from detector gate outlet, another tested row bag (B) is entered darkroom from travelling belt porch more simultaneously, when row bag enters darkroom just completely, rolling screen door is closed again, wind spout sampling system is formed, and starts sampling, and so circulation realizes full-time collection and the detection of multiple inspected object.

The following describes according to embodiment of the present utility model, use the method that darkroom formula rays safety detection apparatus checks tested object.Method comprises sample collection step, sample handling procedure and sample detection step substantially.

First be sample collection.Tested luggage is positioned on the travelling belt 103 of rays safety detection apparatus, after tested luggage is sent to darkroom by travelling belt 103, controlled the darkroom of folding by infrared induction before, back door transfers closed condition to by opening and travelling belt 103 slows down or shuts down, be positioned at darkroom surrounding and under air pump effect, blow (blast can as required regulable control) to tested luggage by the whirl hole of spirality arrangement, the pump-line of the sampling vacuum noz(zle) and darkroom top-side that are positioned at darkroom center of top under high power air pumping action from darkroom draw gas, wind spout is formed under this three synergy.Adhere to gas that in the solid granule shape sample on bag surface of being expert at or row bag, the volatile material carried secretly volatilizees/discharges to be heated through heating net under spout wind action, granular solids sample volatilizes portion gas through heating and can with escaping gas sample together through semi-permeable diaphragm, and to be sucked by asepwirator pump of sampling through the sampling conduit of heating and thermal insulation adsorbent is housed the full-time pre-concentration adsorbent chamber of piston type in carry out sample adsorption, two piston type adsorbers are used alternatingly the full-time interleaved collection that can realize sample, sampling asepwirator pump continues air-breathing sampling can realize sample concentration.

The process of sample and detection: have the absorption screen drum of sample to be pushed into rapidly in Thermal desorption chamber by piston type adsorber adsorbing even concentrate, absorption sample is on the sorbent separated out rapidly under high temperature action, the sample of separating out analyzes detecting portion (MCC and IMS) with flowing into bottom analytically chamber and mix rapidly through the chromatogram carrier gas of preheating and brought into by carrier gas, completes parsing sample introduction.

Particularly, darkroom of the present utility model formula rays safety detection apparatus is made up of an overall chassis body.Chassis body mainly comprises feed belt, casing, wind guide chamber, cavity muff, be distributed in cabinet entrance travelling belt and outlet belt position place and the rolling screen door of eddy flow boot disk is installed at sidewall, the eddy flow boot disk that cabinet two bottom sides is installed, be embedded in the travelling belt facing 104 of travelling belt 103 both sides, enclosure top exhausting hole, inflator pump, aspiration pump, gas ducting, pump-line, heating filter screen, sample collection pipeline, wind guide chamber, semi-permeable diaphragm and hold assembly thereof, top funnel lid etc.Described feed belt is controlled by change speed motor, and travelling belt 103 is for transmitting tested row bag through darkroom, and be positioned on feed belt by tested luggage, tested luggage can be sent in darkroom by belt.When the infrared induction system looks be arranged in the case side wall of detector gate entry position, main frame side enters into cabinet inside just completely to tested luggage, reducing motor reduces speed now or shuts down operation (travelling belt 103 slows down or stops), the rolling screen door being distributed in rays safety detection apparatus detector gate entrance and exit place hangs down, whole chassis body forms airtight darkroom, the eddy flow boot disk being positioned at cabinet both sides forms full circle just with the eddy flow boot disk be positioned in the rolling screen door of front and back, multi-turn in eddy flow boot disk is also formed just by the whirl hole of spiral circular arrangement, inflator pump, aspiration pump, sampling asepwirator pump is all started working, inflator pump gas is along cabinet housing passage from being positioned at discharging by the whirl hole of spirality arrangement bottom cabinet, and form spirality wind, the helical flow formed is continued pull-up by the aspiration pump and the sampling asepwirator pump that are positioned at enclosure top, form powerful wind spout, stick to the solid sample granule of surfaces of luggage, or the trace gas of volatile substances volatilization in baggages passes the heating filter screen on wind guide chamber top under the powerful act of sucking of wind spout cyclone center, the gaseous sample of volatile substances can directly through semi-permeable diaphragm under the effect of wind spout air-flow, arrive adsorber from the sample collection pipeline through heating and thermal insulation again and carry out sample adsorption collection.And first can be heated rapidly and volatilize portion gas sample between heating filter screen and semi-permeable diaphragm by the be expert at solid granule shape sample on bag surface of the adhesion that wind spout picks up, the gaseous sample volatilized passes through semi-permeable diaphragm again, sample collection pipeline arrival adsorber again through heating and thermal insulation adsorbs, solid particle residue by the powerful sucking-off of aspiration pump, will pollute to prevent pipeline or affects the detection of next line bag.Wherein, described inflator pump and aspiration pump, for the wind-force providing persistent loop for wind spout.The power of inflator pump can be selected as required, and due to the gas enlarging function of wind spout, the flow velocity of aspiration pump should be more than 10 times of inflator pump, to form negative pressure thus to carry out the sampling of suction thing.The air stream be filled with in order to avoid inflator pump causes interference to the sampling composition sucked from sampled targets, the air-source distance samples target that inflator pump can be gathered on the one hand is far away as far as possible, air pump and sampling stomidium space out by the flexible conduit turned to as available flexible, filtration, purification can be carried out on the other hand to the air entering inflator pump, avoid gas cross to pollute, improve the sensitivity of the location sampling of sample devices device.Wherein, described wind guide chamber can be heated, described cavity muff can to whole wind guide chamber cavity and between wind guide chamber and muff gas ducting be incubated, temperature in usual wind guide chamber or darkroom can be set to higher than room temperature 10 ~ 20 degrees Celsius, ensure that safety on the one hand, also can promote the quick volatilization of effumability or volatile prohibited items in tested row bag on the other hand, be conducive to sample collection.Wherein, travelling belt facing 104 is provided with specially in described travelling belt 103 both sides, adopts dense planting bristle at facing 104 and the contact site of travelling belt 103, facing 104 and bristle effectively to ensure in wind spout sampling process that darkroom can seal in the best condition and prevent mass air flow from deriving from leakage bottom belt and having an impact to detection.Wherein, described semi-permeable diaphragm adopts the clamping of two panels wire netting, can be used for semi-permeable diaphragm on the one hand and fixes, and semi-permeable diaphragm also can be prevented to be torn under powerful wind spout effect on the other hand.Described semi-permeable diaphragm can stop other foreign-matter contaminations such as hydrone, amino molecule in inhaling air loading matter to enter, and effectively prevents the pollution of chromatographic column or migration tube, and the formation that simultaneously also can limit cluster improves the resolution of equipment device.

According to the utility model embodiment, described sample collection connecting pipe adopts fluororubber or the polyfluortetraethylene pipe of metal or stable chemical nature, tube wall is provided with heating film and heat-preservation cotton, in the whole process of sample collection, sample collection connecting tube all keeps higher temperature (100 ~ 250 DEG C), effectively can stop sample in sample collection process and be condensate in and inner-walls of duct causes sample lose or pipeline pollutes.

According to the utility model embodiment, described full-time pre-concentration sampling thief mainly comprises bitubular piston cylinder, piston type adsorber, for the high temperature resistant O-ring seals of packed-piston cylinder and piston type adsorber.Preferably, described bitubular piston cylinder adopts that heat-insulating property is good, the polytetrafluoro of good mechanical property and stable chemical nature or PEEK material make.Described high temperature resistant O O-ring seal, for forming sealing by piston cylinder and piston type adsorber.Described piston type adsorber mainly comprises the piston body of rod being positioned at adsorber top, is positioned at the adsorber screen drum at middle part and is positioned at the mat insulation of absorber bottoms.Preferably, piston rod adopts polytetrafluoro to make, and adopts motor to drive, and when sample collection and sample introduction parsing, electrode can seal and slide by driven plunger formula adsorber in piston cylinder and Thermal desorption chamber.Described absorption screen drum, the inert metal of preferred employing stable chemical nature makes, adsorbent can be placed in the screen drum inside of hollow, and sorbent material diameter should be greater than screen drum outer wall bore dia, and sorbent material can be selected to add by the main detection target of user as required.Described mat insulation, the preferred heat-insulating property that adopts is good, the polytetrafluoro material of stable chemical nature, and mat insulation effectively can completely cut off the heat interchange between Thermal desorption chamber and absorption screen drum, is conducive to sample adsorption and concentrates.Mat insulation adopts spiral to be connected with absorption screen drum, and this connected mode is conducive to the replacing of mat insulation and the replacing of sorbent material.In testing process, two piston type adsorbers are used alternatingly the full-time absorption that can realize sample, improve the detection efficiency of equipment device.

According to the utility model embodiment, described Thermal desorption chamber, heating film is covered with outside chamber, can heat cavity, be coated with heat-preservation cotton outside the additional hotting mask in chamber simultaneously, can be incubated cavity, cavity is also provided with temp probe, Real-Time Monitoring and control can be carried out to cavity temperature by outside temperature control circuit.Described Thermal desorption chamber and above-mentioned pipeline heating system all adopt temperature programme pattern, effectively can reduce power consumption.When resolving sample introduction, motor drives one of them to adsorb and the piston type adsorber concentrating sample is pushed into rapidly from piston cylinder and has in the Thermal desorption chamber of high temperature, drive another to resolve sample introduction and the piston type adsorber completing detection is extracted simultaneously, prepare to concentrate the sample adsorption agent of next tested row bag.The sample be adsorbed on by pushing rapidly on the piston type adsorber in Thermal desorption chamber is separated out under the high temperature conditions instantaneously, and mixes with the carrier gas flowed into bottom Thermal desorption chamber, is then brought into chromatographic column and carries out pre-separation, then detect to IMS.

According to the utility model embodiment, select and use volume little, post effect high and the porous mouth capillary column (MCC) that velocity of separation is fast can overcome conventional capillaries post analysis time long (10 ~ 15 minutes) but also the problem needing a bulky burner hearth to realize high temperature to be difficult to meet the needs of field quick detection.

According to the utility model embodiment, temperature control system comprises heating system, heat-insulation system, temp probe and temperature-control circuit, is mainly used in carrying out heating, being incubated and temperature control to sample collection connecting pipe, wind guide chamber, heating filter screen, Thermal desorption chamber, chromatographic column and transference tube; Preferably, sample collection pipeline, Thermal desorption chamber and migration tube part adopt heating film heating; Wind guide chamber adopts heating blanket heating or heating rod heating; Heating net adopts has the fast heater strip Fast Heating of firing rate.Preferably, described heat-insulation system, adopts heat-preservation cotton, be mainly used in coordinating temperature control system be each temperature controlling device through row heat-insulation and heat-preservation, on the one hand can reduce the parts different parts temperature difference, improve accuracy of detection; Overall energy consumption can be reduced on the other hand.

According to the utility model embodiment, ion mobility spectrometry equipment is positive and negative double mode, the on-line checkingi while that the ion adopting positive and negative double mode ion mobility spectrometry equipment can realize volatilizing in tested row bag positive-negative polarity material carrying out, compare to monotype to switch without the need to electric field, shorten detection duration, improve detection efficiency; In addition, described migration tube adopts resistant to elevated temperatures ceramic material, has widened the scope that can detect sample greatly.

Although with reference to exemplary embodiments of the present utility model, specifically illustrate and describe the utility model, but those of ordinary skill in the art are to be understood that, when not departing from the spirit and scope of the present utility model that claims limit, the multiple change in form and details can be carried out to these embodiments.

Claims (10)

1. a darkroom formula rays safety detection apparatus, comprise and form the airtight housing in darkroom and the parts of enclosure interior, the parts of enclosure interior comprise:

Sampling system, sampling system comprises for the sample collecting apparatus of collected specimens and the conveyer in order to tested object to be sent to the position expected in sample collecting apparatus from the external world;

Sample processing system, for concentrating sample and parsing sample; With

Detection system, detects sample composition by gas chromatography-ionic migration spectrometer or independent ionic migration spectrometer;

Wherein, sampling system, sample processing system and detection system are communicated with by web member, and the tested object making to be admitted in the housing forming airtight darkroom completes the collection of sample, process and detection in housing.

2. darkroom as claimed in claim 1 formula rays safety detection apparatus, wherein the conveyer of sampling system comprises travelling belt and travelling belt facing, edge and the travelling belt facing of the both sides of travelling belt are configured to fit structure, make travelling belt facing allow travelling belt to move and form hermetically-sealed construction with travelling belt under the motionless state of travelling belt.

3. darkroom as claimed in claim 2 formula rays safety detection apparatus, wherein travelling belt facing is formed by deformable material, comprise coboundary and lower limb, under the state that travelling belt is motionless, by forming negative pressure in the housing in darkroom, travelling belt facing is out of shape so that coboundary and lower limb bear against travelling belt respectively form sealing.

4. darkroom as claimed in claim 1 formula rays safety detection apparatus, sample collecting apparatus comprises sampling cavity, sampling cavity has first end and second end relative with first end, wherein said conveyer is positioned at first end, and cavity of sampling also comprises the sample export for discharging sample near the second end;

Wherein, sampling cavity also comprises and is positioned at the intraparietal inflation entrance of sampling cavity and exhausr port, inflation entrance is configured to be blown into air-flow in sampling cavity, exhausr port is configured to Exhaust Gas, to form tornado air-flow sampling in cavity together with inflation entrance, described tornado air-flow is along the spiral advance of first end to the second end from sampling cavity, and the sample that tested object carries thus is transferred near the second end by tornado air-flow.

5. darkroom as claimed in claim 4 formula rays safety detection apparatus, inflation entrance is arranged so that the inside surface in the axial admission direction and cavity inner wall of inflating entrance is close to tangent, and the axial admission direction of inflating entrance rolls tiltedly towards sample export.

6. darkroom as claimed in claim 4 formula rays safety detection apparatus, the inwall of at least part of sampling cavity is formed frusto-conical shape, the round nose of the minor diameter of frusto-conical internal wall is near the first end of cavity, and the large diameter round nose of frusto-conical internal wall is near the second end.

7. darkroom as claimed in claim 1 formula rays safety detection apparatus, sampling system comprises heating filter screen, for when sample transmits from first end towards the second end to sample filtering, the sample volatilization that tested object carries to help tested object can be heated simultaneously.

8. darkroom as claimed in claim 1 formula rays safety detection apparatus, sampling system comprises semi-permeable diaphragm for selective filter sample, and semi-permeable diaphragm is separated out the space for mixing with carrier gas in sampling cavity.

9. darkroom as claimed in claim 1 formula rays safety detection apparatus, sample processing system comprises pre-concentration sampling adsorber, comprises for the absorption screen drum of concentrating sample and the piston rod for being sent by piston by the sample in absorption screen drum; With

Thermal desorption chamber, at high temperature separating out the sample in absorption screen drum, and uses suitable carrier gasses and sample mix.

10. darkroom as claimed in claim 1 formula rays safety detection apparatus, detection system comprises the porous mouth capillary column for pre-separation sample, and ion mobility spectrometry equipment.