CN201522479U - Automatic gas sample injector - Google Patents
Automatic gas sample injector Download PDFInfo
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- CN201522479U CN201522479U CN2009202466528U CN200920246652U CN201522479U CN 201522479 U CN201522479 U CN 201522479U CN 2009202466528 U CN2009202466528 U CN 2009202466528U CN 200920246652 U CN200920246652 U CN 200920246652U CN 201522479 U CN201522479 U CN 201522479U
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Abstract
The utility model relates to an automatic gas sample injector, which comprises a base, a sample injecting device, a positioning device, a bottle stopping arm, an action mechanism, a supporting device, a control device and a power supply. The sample injecting device comprises a two-way electromagnetic valve, a straight joint, a syringe needle seat, a syringe head and a plurality of sample containers; and the injection head and the sample containers are installed on the syringe needle seat. The positioning device comprises a side shaft capable of rotating and lifting; the side shaft is arranged on the base; an upper air cylinder support, a lower air cylinder support and a bottle baffling arm are transversely arranged on the side shaft; and two air cylinder fixed seats are respectively arranged on the upper air cylinder support and the lower air cylinder support. The action mechanism comprises a compressed air source, a needle inserting electromagnetic valve, a needle withdrawing electromagnetic valve and double-way air cylinders; the needle inserting electromagnetic valve and the needle withdrawing electromagnetic valve are arranged on the base; and the double-way air cylinders are arranged on the air cylinder fixed seat. The supporting device comprises a main shaft, a guide disc, a guide arm and a sample disc; the main shaft is arranged in the center of the base; the guide disc and the sample disc are sleeved on the base; a screw type guide groove is arranged on the top surface of the guide disc; and cogs are arranged on the periphery of the guide disc. The control device is used for controlling action of the sample injecting device and the action mechanism. The automatic gas sample injector is adapted to the field of environmental protection, capable of meeting automatic sample injecting requirements when gas samples for detecting air quality are analyzed.
Description
Technical field
The utility model relates to gas sampler, is meant a kind of automatic sampling apparatus that is used with gas chromatographicanalyzer especially.
Background technology
Automatic sampling apparatus can be saved manpower and time in a large number, also can reduce the error that manual operation produces simultaneously, be to utilize one of requisite parts of instrument analytic sample in enormous quantities, the automated analysis instrument is typically equipped with auto injection or automatic analysing apparatus now.Present mainstream gas chromatography all has automatic sampler to sell as optional accessory, the injector that large-scale producer instrument oneself exploitations such as Agilent, Shimadzu, Varian, Thermo are more typically arranged, the producer that special production gas-chromatograph automatic sample injector is also arranged, using has brands such as CTC, HTA, Gilson more widely.But these automatic sampler prices are all high, often to account for the total price of instrument 1/3～1/5 or higher, and the injector of some producer can only be used for the gas chromatography of the own brand of producer, and its consumptive material that provides specially also can only be provided consumptive material simultaneously, and use cost is very high.
The arrangement location of present automatic sampler sample mainly contains three kinds of modes, a kind of is to adopt concentric-ring pattern tracking location, the sample injection arm is sought the position with certain angle rotation, sample is radial outside arrangement, the past more outer ring of this mode sample is arranged lax more, space availability ratio is not high, and the volume that takies is bigger, and the sample position that generally provides is limited; The another kind of XYZ three-dimensional coordinate mode tracking location of adopting, though more sample position can be provided, this injector needs accurate stepper motor, guide rail and complicated control chip and software, it is bigger totally to take volume, thereby cost is also much higher.Also having a kind of is that mechanical arm grasps formula, and this mode is had relatively high expectations to hardware design, and the space also requires bigger, and cost is also higher.
Present gas-chromatograph automatic sample injector is single-use just often, and the function of auto injection can only be provided, automatic cleaning that can not the sampling bottle, vacuumize, subsidiary function such as dilution.
Summary of the invention
At the problems referred to above, fundamental purpose of the present utility model is to provide a kind of gas automatic sampling device, and it can realize the gaseous sample auto injection in the gas chromatographicanalyzer device, has low cost, small and exquisite, characteristics of high efficiency; Simultaneously, this gas automatic sampling device can also be realized automatic cleaning, vacuumize and specimen preparation subsidiary functions such as dilute sample, can improve the efficient of gas analysis greatly.
For realizing above-mentioned functions, a kind of gas automatic sampling device provided by the utility model comprises: a base; One sampling device comprises that a needle holder, is installed in injection head on the described needle holder and O-ring seal, a plurality of sampling receptacle, leads to joint always, between described needle holder, sampling receptacle and the gas chromatography by wireway and straight-through connector conducting gas circuit; One location device, comprise that one is arranged at the paraxonic of the rotatable lifting on the described base, be horizontally set with upper and lower cylinder support on the described paraxonic, an and bottle blocking arm, the end of described upper and lower cylinder support respectively is provided with a cylinder holder, the corresponding position of described lower cylinder support is provided with a through hole, and the position of corresponding described injection head is provided with one and can holds the pin hole that described injection head passes through on the described bottle blocking arm; One actuating mechanism, comprise inserting needle solenoid valve, withdraw of the needle solenoid valve that is arranged on the described base and the two-way cylinder that is arranged at described cylinder holder, one end of described inserting needle solenoid valve and withdraw of the needle solenoid valve respectively is connected with the gas circuit of described two-way cylinder by wireway, the other end then is connected with pressurized air, and the axle of described cylinder connects described needle holder; One bearing device, comprise a main shaft, one positioning disk, one guide arm and a sample disc, described main shaft is arranged at described base central authorities, described positioning disk and sample disc are thereon sheathed, the end face of described positioning disk is provided with the screw type gathering sill, periphery be provided with can with the teeth of gearing mesh on the reducing motor main shaft, on described guide arm has, following two lamellasomes, described positioning disk is located in wherein, one end of described guide arm is installed on the described paraxonic, the last lamellasome of the other end is provided with guide head and the coordinate detection device that is positioned in the described gathering sill, and described sample disc is provided with the sampling receptacle jack by helix equidistant arrangement corresponding with described gathering sill; One control device is used to control the action of described sampling device, actuating mechanism and described reducing motor; One power supply is described control device power supply.
In the technique scheme, sampling device part is not if link to each other with gas chromatographicanalyzer, links to each other with a vacuum pump but change into one or two three-way electromagnetic valve by straight coupling, then can realize the function of automatic vacuum; Connect if change into, then can realize the function of cleaning or diluting automatically automatically by one or two three-way electromagnetic valve and high-purity carrier gas or high-purity zero gas phase.
In the such scheme, described control device comprises that one is preset with the processor of control program, the storer, display device and the operation push-button that are connected with described processor, the steering order of described processor connects described sampling device, actuating mechanism and described reducing motor by interface circuit.
In the above technical scheme, the starting and ending position of described gathering sill is embedded with a magnet steel respectively, the center of described gathering sill equidistantly be provided with described sample disc on sampling receptacle jack corresponding positioning hole.
In the above the technical solution of the utility model, the coordinate detection device that is provided with on the described guide arm is a photoelectric induction device, the photoemission cell of described photoelectric induction device is arranged at the position of the corresponding described guide head of lamellasome under the described guide arm, described photoelectric receiving tube is embedded in the described guide head, and the detection signal of described photoelectric induction device is imported described control device by circuit.
In the above technical scheme, but described coordinate detection device also comprises the Hall switch of two induced fields, is used to detect the starting and ending position of described gathering sill, and its detection signal is also imported described control device by circuit.
In the above technical scheme, the main shaft of described bearing device and the paraxonic of described locating device are arranged on the described base by bearing respectively.
Adopt technique scheme, the utlity model has following advantage: 1, the utility model adopts the sample disc that is provided with the screw type gathering sill, can be on a sample disc a fairly large number of sample bottle of once intensive placement, operating personnel need not frequently to change sample disc, can satisfy the requirement of auto injection in enormous quantities, the analysis efficiency height.2, the sample disc of the screw type gathering sill that adopts of the utility model both can have been placed the sample bottle of a greater number, had saved the space again greatly, made injector small and exquisite flexibly.3, the utility model such as external vacuum pump or high-purity carrier gas also can realize the function that automatic vacuum or automatic sample dilute.4, the utility model is compact to design, and is simple for structure, do not have complicated electromechanical structure, and cost is relatively low.
Description of drawings
Fig. 1 is a population distribution connection layout of the present utility model;
Fig. 2 is sampling device and a locating device bulk-breaking arrangenent diagram in the utility model;
Fig. 2 A is the cut-open view of needle holder in the utility model sampling device;
Fig. 3 A is the vertical view of upper cylinder support in the utility model locating device;
Fig. 3 B is the cut-open view of lower cylinder support in the utility model locating device;
Fig. 3 C is the vertical view of bottle blocking arm in the utility model locating device;
Fig. 3 D is the cut-open view of bottle blocking arm in the utility model locating device;
Fig. 4 is actuating mechanism and a locating device bulk-breaking arrangenent diagram in the utility model;
Fig. 5 is bearing device and a base bulk-breaking arrangenent diagram in the utility model;
Fig. 5 A is the vertical view of the utility model positioning disk;
Fig. 5 B is the partial enlarged drawing of gathering sill on the utility model positioning disk;
Fig. 5 C is the vertical view of the utility model sample disc;
Fig. 6 is that control device is formed synoptic diagram in the utility model;
Fig. 7 is a workflow diagram of the present utility model.
Embodiment
In order to describe structure of the present utility model and characteristics in detail, existing following preferred embodiment of act and conjunction with figs. are described as follows.
As shown in Figure 1, the utility model comprises a base 10, and base 10 is provided with sampling device 20, locating device 30, actuating mechanism 40, bearing device 50, control device 60 and power supply 70.
As shown in Figure 2, sampling device 20 comprises one or two three-way electromagnetic valve 21, a straight coupling 22, a needle holder 23, an injection head 24 and a plurality of sample bottle 25.Straight coupling 22 links to each other with the sampling valve A of gas chromatographicanalyzer by wireway one end, the other end is communicated with needle holder 23, shown in Fig. 2 A, needle holder 23 has a connecting link 231, the opening 232,233 of two connections, one of them opening 233 is by the sampling valve A of the gas chromatographicanalyzer of wireway and straight coupling 22 connections, and another opening 232 is communicated with injection heads 24, by injection head 24 gas is injected sample bottle 25.The connecting portion of needle holder 23 and injection head 24 is one to be provided with externally threaded hollow cylinder (not shown), and with nut injection head 24 is locked on the needle holder 23.Closely prevent gas leakage for injection head 24 is connected with needle holder 23, between needle holder 23 and injection head 24, also be provided with an O RunddichtringO 234 and guarantee impermeability.Injection head 24 of the present utility model adopts common injection needle to get final product.Sampling receptacle 25 is the flat screw socket gaseous sample bottle of glass, and its top plastic lid central authorities are provided with and can hold the small sircle hole that injection head 24 passes through, and are provided with rubber gasket in the lid.Straight coupling 22 in the sampling device 20 can link to each other with the sampling valve A of gas chromatographicanalyzer to realize that the gaseous sample auto injection is in the gas chromatographicanalyzer device as above-mentioned description; Also can be converted into one or two three-way electromagnetic valve 21 and link to each other, then can realize the function of autoabstract product bottle vacuum this moment with a vacuum pump B; The gas cylinder C of straight coupling in the sampling device 20 22 with high-purity carrier gas or zero gas (clean gas that does not contain other foreign gas) can also be linked to each other, then can realize the function of cleaning or diluting automatically.
Continuation is referring to Fig. 2, and locating device 30 comprises that one is arranged on the paraxonic 31 of base 10 1 sides, and paraxonic 31 adopts tube-in-tube structure, is arranged with upper and lower cylinder support 32,33 on the sleeve, and a bottle blocking arm 34, is locked on the paraxonic by screw.Sleeve is provided with locating slot, and a projection 311 is arranged on the paraxonic 31, and sleeve is stuck on the paraxonic 31.The top of paraxonic 31 also is provided with internal thread, and an available bolt 312 makes upper and lower cylinder support 32,33 and bottle blocking arm 34 be securely in place on the paraxonic 31 by sleeve the sleeve locking.Paraxonic 31 not only can rotate smoothly like this, and sleeve more can be by the pull lifting.As shown in Figure 3A, one end of upper and lower cylinder support 32,33 is established one and is used for the through hole 322 of upper and lower cylinder support casing on sleeve, terminal (being shown as the left side among the figure) is provided with a cylinder holder 321 with fixing cylinder 44 (referring to Fig. 4), lay screw 323 around the cylinder holder 321, by fastening bolt 324 that upper and lower cylinder support 32,33 and cylinder 44 is fixing; For lower cylinder support 33, the centre position of cylinder holder 321 is provided with a through hole 331 (shown in Fig. 3 B) to wear cylinder axis 441 (referring to Fig. 4).Bottle blocking arm 34 1 ends are established one and are used for bottle blocking arm 34 is enclosed within through hole 342 on the sleeve, and the position of the corresponding injection head 24 of the other end then is provided with one and can holds the pin hole 341 (shown in Fig. 3 C, Fig. 3 D) that injection head 24 passes through.The effect of pin hole 341 is when injection head 24 is pricked downwards, can set upright injection head 24 and increase the intensity of pin, prevents looper or broken needle.When pulling out pin, bottle blocking arm 34 can block sample bottle 25, and injection head 24 is pulled out from sample bottle 25, and sample bottle 25 is return under the effect of gravity.
Referring to Fig. 4, actuating mechanism 40 comprises compressed air source 41, inserting needle solenoid valve 42, withdraw of the needle solenoid valve 43 and two-way cylinder 44.Compressed air source 41, inserting needle solenoid valve 42 all fixedly are located on the base 10 with withdraw of the needle solenoid valve 43, two-way cylinder 44 is installed between the cylinder holder 321 of upper and lower cylinder support 32,33, and compressed air source 41 is connected by the gas circuit of wireway with two-way cylinder 44.Cylinder axis 441 is connected with the connecting link 231 of sampling device 20 needle holder 23, make needle holder 23 can with cylinder axis 441 interlocks.
Referring to Fig. 5, bearing device 50 comprises that one is arranged at the main shaft 51 of base 10 central authorities, and its upper end is provided with internal thread, fixes to cooperate a bolt 59 screw locks.By the sheathed positioning disk 52 in main shaft 51 lower ends, shown in Fig. 5 A, the end face of positioning disk 52 is provided with screw type gathering sill 521, a plurality of centers that evenly distribute in the gathering sill 521 with positioning disk 52 equidistant and with sample bottle 25 corresponding positioning hole 522 (shown in Fig. 5 B), as the usefulness of photoelectricity location; Also be embedded with a column type magnet steel 523 (Fig. 5 A) respectively in the starting and ending position of gathering sill 521.The periphery of positioning disk 52 is provided with teeth 524, to mesh with a gear 56 that is arranged on DC speed-reducing 53 main shafts, rotates under the drive of motor 53.One guide arm 54 is divided into upper and lower two lamellasomes, and positioning disk 52 is located in wherein, one end of guide arm 54 is installed on the paraxonic 31 by the jackscrew seat, the last lamellasome of the other end is provided with metal guide head 541, and guide head 541 is stretched and is located in the gathering sill 521, moves along gathering sill 521.Guide head 541 adopts metals such as aluminium, stainless steel or copper to make, and present embodiment adopts that hardness is moderate, ductility and the good copper of friction property become, to obtain the effect of guide head smooth and easy slip in gathering sill 521.Also be embedded with photoelectric receiving tube 542 in the guide head 541.The position of corresponding photoelectric receiving tube 542 is provided with photoemission cell 543 on the following lamellasome of guide arm 54.The light that sends when photoemission cell 543 passes pilot hole 522 and is received by photoelectric receiving tube 542, can determine the position of sample bottle.Also be provided with the Hall switch 544 of two energy induced fields on the guide arm 54, corresponding with the magnet steel 523 that is embedded in gathering sill 521 starting and ending positions, be used to detect the initial and final position of gathering sill 521.Photoelectric induction device and Hall switch 544 detected position signallings all transfer to control device 60 (referring to Fig. 1 and Fig. 6) by circuit.For simplified structure, guide arm 54 adopts circuit board to make, and both can realize the guide-localization function of guide arm, can finish the function of transmission signals again simultaneously.Also comprise a sample disc 55 in the bearing device 50, for plugging sample bottle 25, sample disc 55 is coupled together by four connecting rods 551 that are evenly distributed on the excircle by three dishes of upper, middle and lower, the center is provided with the sleeve 552 that is sheathed on the main shaft 51, sleeve 552 is provided with caulking groove 553, relevant position on the main shaft 51 then is provided with a projection 511, and projection 511 embeds can chimeric location in the caulking groove 553.The upward dish and the mid-game of sample disc 55 are provided with the sample bottle jack 554 by helix equidistant arrangement corresponding with pilot hole 522 positions in the gathering sill 521, the quantity of jack 554 can be coiled 55 size per sample and the thickness of sample bottle 25 is provided with flexibly, from dozens of to up to a hundred all can (shown in Fig. 5 C), promptly once can finish the sample introduction of up to a hundred sample bottles automatically.
Behind the sample disc 55 sheathed location, only need a bolt 59 screw locks are gone into main shaft 51 tops, just finished the installation of sample disc 55.The utility model gas automatic sampling device, the general sample disc 55 of installing earlier, upwards lift then and rotary positioning apparatus 30 in sleeve on the paraxonic 31, the two cylinder supports 32,33 and the bottle blocking arm 34 that are fixed on the sleeve are made progress and rotation simultaneously, when rotating to the sample bottle top, put down the position that sleeve then can set locating device 30 downwards.Change sample disc 55 as need, only need mention sleeve on the paraxonic 31 earlier, can take off sample disc 55 easily and change cylinder support 32,33 and bottle blocking arm 34 whiz sample bottles 25.
Referring to Fig. 5,, can also add solid bearing 11 in their bottom in order to improve main shaft 51 and the stability of paraxonic 31 when rotating.The bearing seat 111 of two solid bearings 11 is installed on the base 10, is provided with two bearings in each bearing seat 111, and main shaft 51 places wherein with paraxonic 31, just can receive effect stable, that rotate swimmingly.
The composition of control device 60 is referring to Fig. 1 and shown in Figure 6, and its core is a microprocessor 61, and the utility model adopts 8051 general microprocessors, is preset with the control program of finishing in the microprocessor 61.Microprocessor 61 also is connected with storer 62, display panels 63 and operation push-button 64, the steering order of microprocessor 61 then connects each by control elements by interface circuit 65, comprises motor 53, two three-way electromagnetic valves 21, inserting needle solenoid valve 42, withdraw of the needle solenoid valve 43, the photoemission cell 541 that is used for the sample bottle position probing and photoelectric receiving tube 543, is used for the Hall switch 544 of gathering sill position probing.In the specific implementation, microprocessor 61, storer 62, display panels 63 and operation push-button 64 are installed in the box body, box surface is provided with display panels 63 and operation push- button 64,65 of interface circuits are arranged on the base 10, connect the microprocessor 61 that is arranged in the box body by lead.
As shown in Figure 7, operating process of the present utility model is as follows:
When beginning to carry out full-automatic sample introduction state, control device 60 judges whether to arrive sample injection time, after arriving sample injection time, at first by 52 motions of the gear driven positioning disk on the DC speed-reducing 53, positioning disk 52 drives the sample disc 55 that is fixed on the main shaft 51 again and rotates together, simultaneously, guide head 541 on the guide arm 54 moves in gathering sill 521, the position in detection and location hole 522 also drives paraxonic 31 and rotates together, when guide head 541 motion and when detecting the initial pilot hole 522 of the sample introduction of the setting in the corresponding gathering sill 521, motor 53 stop motions, at this moment guide arm 54 also drives the top that two-way cylinder 44 on the paraxonic 31 and needle holder 23 turn to sample bottle corresponding in the sample disc, carry out the preparation of sample introduction, this moment, needle holder 23 linked to each other with the gas chromatography sampling valve by wireway, was conducting state.Control device 60 sends instruction then, open inserting needle solenoid valve 42, make pressurized air in the compressed air source enter the upper chamber of slim two-way cylinder 44, compressed air-driven cylinder axis 441, cylinder axis 441 drives the needle holder 23 and the injection head 24 that are connected on the axle again and moves downward, injection head 24 punctures the rubber gasket at sample bottle top, the gas that is compressive state in the sample bottle is entered by injection head 24 and wireway under self pressure in the quantitative ring on the form and aspect chromatogram sampling valve A, close inserting needle solenoid valve 42 then, the pressure gas in the upper chamber of slim two-way cylinder 44 is discharged from the exhausr port of inserting needle solenoid valve 42.After the sample introduction stand-by period arrives, control device 60 sends instruction again, open withdraw of the needle solenoid valve 43, make pressurized air in the compressed air source enter the lower chamber of slim two-way cylinder 44, compressed air-driven cylinder axis 441, cylinder axis 441 drives the needle holder 23 and the injection head 24 that are connected on the axle again and moves upward, at this moment bottle blocking arm 34 can block sample bottle, 24 of injection heads continue to move upward and release from sample bottle, the rubber gasket at sample bottle top good seal syringe needle hole again under elastic reaction, sample bottle self-return under the effect of gravity simultaneously.When cylinder axis 441 returns, when injection head 24 was all pulled out from sample bottle, control device 60 sent instruction, closed withdraw of the needle solenoid valve 43, pressurized air in cylinder 44 lower chambers is discharged by the exhausr port of withdraw of the needle solenoid valve 43, finish the auto injection process of a gaseous sample.Then, control device 60 can read sample introduction information next time, prepares sample introduction process next time.
In the time will carrying out the automatic vacuum function, manually changing gas circuit earlier connects, the end that straight coupling 22 is connected gas chromatographies changes into an end of two three-way electromagnetic valves 21 and linking to each other, the other end of two three-way electromagnetic valves 21 then links to each other with vacuum pump B, before carrying out automatic vacuum, open vacuum pump B earlier, set the automatic vacuum time, vacuumize interval time, vacuumize initial bottle number and finish bottle number, the beginning automatic vacuum, at first arrive the initial bottle number of appointments by control device 60 instruction locating devices, concrete action is gear driven positioning disk 52 motions on the control device 60 instruction DC speed-reducing 53, positioning disk 52 drives the sample disc 55 that is fixed on the main shaft 51 again and rotates together, simultaneously, guide head 541 on the guide arm 54 moves in gathering sill 521, the position in detection and location hole 522 also drives paraxonic 31 and rotates together, when guide head 541 motion and when detecting the initial pilot hole 522 of vacuumizing of setting in the corresponding gathering sill 521, motor 53 stop motions, at this moment guide arm 54 also drives the top that two-way cylinder 44 on the paraxonic 31 and needle holder 23 turn to sample bottle corresponding in the sample disc, carry out the preparation that vacuumizes, at this moment two-way electromagnetic valve 21 is in closed condition, control device 60 sends instruction then, open inserting needle solenoid valve 42, make pressurized air in the compressed air source enter the upper chamber of slim two-way cylinder 44, compressed air-driven cylinder axis 441, cylinder axis 441 drives the needle holder 23 and the injection head 24 that are connected on the axle again and moves downward, injection head 24 punctures the rubber gasket at sample bottle top, close inserting needle solenoid valve 42 then, the pressure gas in the upper chamber of slim two-way cylinder 44 is discharged from the exhausr port of inserting needle solenoid valve 42.Open two-way electromagnetic valve 21 then, gas in the sample bottle is taken away by injection head 24 and wireway under the suction of vacuum pump, after the pumpdown time of setting, gas in the sample bottle is all taken away basically, sample bottle is vacuum state, close two-way electromagnetic valve 21 this moment, cutting off vacuum pump is connected with the gas circuit of sample bottle, control device 60 sends instruction again, open withdraw of the needle solenoid valve 43, make pressurized air in the compressed air source enter the lower chamber of slim two-way cylinder 44, compressed air-driven cylinder axis 441, cylinder axis 441 drives the needle holder 23 and the injection head 24 that are connected on the axle again and moves upward, and at this moment bottle blocking arm 34 can block sample bottle, and 24 of injection heads continue to move upward and release from sample bottle, the rubber gasket at sample bottle top good seal syringe needle hole again under elastic reaction, make to keep vacuum state in the sample bottle, standby as the gas sample bottle, while sample bottle self-return under the effect of gravity.When cylinder axis 441 returns, when injection head 24 was all pulled out from sample bottle, control device 60 sent instruction, closed withdraw of the needle solenoid valve 43, pressurized air in cylinder 44 lower chambers is discharged by the exhausr port of withdraw of the needle solenoid valve 43, finish the automatic vacuum process of a gaseous sample bottle.Then, control device 60 can read and vacuumize information next time, prepares vacuum next time.
In the time will carrying out the sample bottle cleaning, vacuum pump B with gas circuit coupling part in the above-mentioned automatic vacuum process changes carrier gas or cleaning gas gas cylinder C into earlier, other connection is constant, course of action and automatic vacuum process are just the same, and different is that gaseous tension is controlled at standard atmospheric pressure owing to changed vacuum pump into carrier gas or cleaning gas, sample bottle vacuumizes, gas flow in the wireway is just in time opposite, and carrier gas or cleaning gas fill in the sample bottle, realizes the automatic cleaning of sample bottle.
In the time will carrying out diluted sample, being connected when the gas circuit connection is cleaned with sample bottle is just the same.The automatic cleaning process of course of action and sample bottle is just the same, different is that carrier gas or cleaning gas change high-purity zero gas or high-purity carrier gas gas cylinder C into, pressure control is to the corresponding pressure of required extension rate, gas is gas sample to be diluted in the sample bottle, high-purity zero gas or high-purity carrier gas enter into sample bottle and sample mix under the effect of pressure, realize the automatic dilution of sample.
The above only is preferred embodiment of the present utility model, but concrete embodiment as the photoelectricity locator meams that the utility model adopted, also can be embodied as the locator meams of electromagnetic induction not as limit.The equivalent structure transformation that all foundations instructions of the present utility model, claims and accompanying drawing are done all should be included in the scope of patent protection of the present utility model.
Claims (10)
1. a gas automatic sampling device is characterized in that, comprises:
One base;
One sampling device, a straight coupling, a needle holder, that comprises conducting successively is installed in injection head and a plurality of sample bottle on the described needle holder;
One location device, comprise that one is arranged at the paraxonic of the rotatable lifting on the described base, be horizontally set with a upper and lower cylinder support and a bottle blocking arm on the described paraxonic, the position of corresponding described injection head is provided with one and can holds the pin hole that described injection head passes through on the described bottle blocking arm;
One actuating mechanism, comprise compressed air source, be arranged at inserting needle solenoid valve, the withdraw of the needle solenoid valve on the described base and be arranged at a two-way cylinder between the described upper and lower cylinder support, described compressed air source is connected with the gas circuit of described two-way cylinder by wireway, and the axle of described cylinder connects described needle holder;
One bearing device, comprise a main shaft, one positioning disk, one guide arm and a sample disc, described main shaft is arranged at described base central authorities, described positioning disk and sample disc are thereon sheathed, the end face of described positioning disk is provided with the screw type gathering sill, periphery be provided with can with the teeth of gearing mesh on the reducing motor main shaft, on described guide arm has, following two lamellasomes, described positioning disk is located in wherein, one end of described guide arm is installed on the described paraxonic, the last lamellasome of the other end is provided with guide head and the coordinate detection device that is positioned in the described gathering sill, and described sample disc is provided with the sample bottle jack by helix equidistant arrangement corresponding with described gathering sill;
One control device is used to control the action of described sampling device, actuating mechanism and described reducing motor;
One power supply is described control device power supply.
2. gas automatic sampling device as claimed in claim 1 is characterized in that: a plurality of centers that evenly distribute in the described gathering sill 1 with positioning disk equidistant and with the sample bottle corresponding positioning hole.
3. gas automatic sampling device as claimed in claim 1, it is characterized in that: the starting and ending position of described gathering sill is embedded with a magnet steel respectively, described guide arm is provided with two and the corresponding Hall switch in magnet steel position, and the detection signal of Hall switch is imported described control device by circuit.
4. gas automatic sampling device as claimed in claim 2, it is characterized in that: the starting and ending position of described gathering sill is embedded with a magnet steel respectively, described guide arm is provided with two and the corresponding Hall switch in magnet steel position, and the detection signal of Hall switch is imported described control device by circuit.
5. as claim 1 or 2 or 3 or 4 described gas automatic sampling devices, it is characterized in that: the coordinate detection device that is provided with on the described guide arm is a photoelectric induction device, the photoemission cell of described photoelectric induction device is arranged at the position of the corresponding described guide head of lamellasome under the described guide arm, described photoelectric receiving tube is embedded in the described guide head, and the detection signal of described photoelectric induction device is imported described control device by circuit.
6. gas automatic sampling device as claimed in claim 5, it is characterized in that: it comprises that one is preset with the processor of control program described control device, the storer, display device and the operation push-button that are connected with described processor, the steering order of described processor connects described reducing motor, inserting needle solenoid valve, withdraw of the needle solenoid valve, photoemission cell and photoelectric receiving tube, Hall switch by an interface circuit.
7. as claim 1 or 2 or 3 or 4 described gas automatic sampling devices, it is characterized in that: the end of described upper and lower cylinder support respectively is provided with a cylinder holder, be provided with a through hole that the cylinder axis of two-way cylinder is passed in the middle of the cylinder holder of described lower cylinder support, described two-way cylinder is installed between the two cylinder holders.
8. gas automatic sampling device as claimed in claim 7 is characterized in that: described needle holder has a connecting link, is connected with the cylinder axis of described two-way cylinder.
9. as claim 1 or 2 or 3 or 4 described gas automatic sampling devices, it is characterized in that: the main shaft of described bearing device and the paraxonic of described locating device are arranged on the described base by bearing respectively.
10. gas automatic sampling device as claimed in claim 8 is characterized in that: the main shaft of described bearing device and the paraxonic of described locating device are arranged on the described base by bearing respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202466528U CN201522479U (en) | 2009-10-23 | 2009-10-23 | Automatic gas sample injector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202466528U CN201522479U (en) | 2009-10-23 | 2009-10-23 | Automatic gas sample injector |
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| CN201522479U true CN201522479U (en) | 2010-07-07 |
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| CN2009202466528U Expired - Lifetime CN201522479U (en) | 2009-10-23 | 2009-10-23 | Automatic gas sample injector |
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Cited By (7)
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| CN103308611A (en) * | 2012-09-07 | 2013-09-18 | 刘冠琳 | Multichannel sample injecting etiological diagnostic system for urinary calculus and application method |
| CN104198748A (en) * | 2014-09-03 | 2014-12-10 | 中国科学院植物研究所 | Automatic gas sample feeder |
| CN104841665A (en) * | 2015-03-16 | 2015-08-19 | 上海北裕分析仪器有限公司 | Gas circuit cleaning device and method |
| CN107754738A (en) * | 2016-08-16 | 2018-03-06 | 北京泊菲莱科技有限公司 | Atmosphere control device |
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| CN104841665A (en) * | 2015-03-16 | 2015-08-19 | 上海北裕分析仪器有限公司 | Gas circuit cleaning device and method |
| CN107754738A (en) * | 2016-08-16 | 2018-03-06 | 北京泊菲莱科技有限公司 | Atmosphere control device |
| CN107754738B (en) * | 2016-08-16 | 2023-09-12 | 北京泊菲莱科技有限公司 | atmosphere control device |
| CN109632412A (en) * | 2018-12-05 | 2019-04-16 | 中国科学院亚热带农业生态研究所 | One kind converting N for trace nitrogen2The auxiliary device of O |
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