DE1523050A1 - Sampler for an automatic analyzer - Google Patents

Description

rorenianwaii

J. V / ilheijn fieicbel '

P 15 23 050. 9. September 4, 1968

Teohnicon Instruments Corporation HevS-Al-3374

Sampler for an automatic analyzer

The invention relates to a sampler for automatic analyzers with a number of sample vessels arranged on a turntable, when holding the turntable step by step be guided past a removal station one after the other, with a container filled with a washing liquid and with a removal tube which by means of a drive mechanism alternately into the detergent container and which one after the other the sample vessels guided past the removal station are immersed will.

A known sampler, described for example in German patent specification 1 065 640, contains a turntable which. at his outside hand carries numerous sample vessels, which are gradually moved to an extraction station by turning the turntable be led by. A sampling tube is provided at the sampling station, which can be inserted into the sample vessels that are currently standing still is immersed until the liquid samples are aspirated.

It has also already been proposed near the removal station to arrange a container filled with a washing liquid, so that the extraction tube after immersion in each

909812/0830

agsn (Art. 7 § l Abs. 2 Nr. l Seat Π * ■ '-. Amendment flea. v. 4. S. T8 © I

Sample vessel for the sample vessel for cleaning the transport tubes; can first be immersed in the detergent dispenser. However, this device has the disadvantage that the removal times for the samples and the washing liquid are fixed by the drive mechanism for the extraction tube .

The invention is therefore based on the object of the drive mechanism for the sampling tube in such a way that the sampling times for the samples and the detergent are different can be set and the amounts of sample and washing liquid removed in a preselectable, changeable To be related to each other

Based on the sampler described above, the invention consists in that with the drive mechanism an automatic Clock is coupled, under whose control the sampling tube quickly lirf the sample vessels or ston? Detergent container " . Immersed or pulled out of this and quickly from a position over a sample vessel to a position be pivoted over the detergent container or vice versa, and that the clock is adjustable such that the Zeitabsohnil te, during which the sampling tube thaws into the sample vessels or the detergent container, can be freely selected.

In a preferred embodiment, the sampling tube is in each of the sample vessels for a longer period of time

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• 9 09812/0830

immersed in the Wasohmitte! container «The clock can do a • i

Control disk included that are releasable in their operating position

is held and therefore easily by another control disk can be replaced with different time characteristics

In a further development of the invention, a stirrer is provided in order to increase the measurement accuracy, which before the immersion of the sampling tube is automatically immersed in the sample vessels and remains immersed in them for at least as long, until the extraction tube is also submerged.

The clock contains two times one with a constant Speed running electric motor, which drives a control disc, its cams and notches, which an electric Control switch that operates the drive mechanism, are easily adjustable in length.

The invention is described below in conjunction with the drawings described using an example.

Fig. 1 shows a plan view of an embodiment the invention.

The Pig. Figure 2 shows a section along line 2-2 of Pig. 1. The Pig. Figure 3 shows a section along line 3-3 of Pig. 1. The pi ^. 4 is a side view according to arrow 4 in Pig. 3 ·

909812/0830

The Pig. 4A is a section length of line 4A-4A of FIG. The Pig. Figure 5 is a section along line 5-5 of the Pig. 1. The Pig. 6 is a side view according to arrow 6 in Pig * 5. The Pig. Figure 7 shows a section along line 7-7 of Pig. 5 · The Pig. Figure 8 is a section taken along line 8-8 of Pig. 7th

The Pig. Figure 9 shows a top view of that in Pig. 1 labeled 9 part.

The Pig. Figure 10 is a section taken along line 10-10 of Pig. The Pig. Figure 11 shows a section along line 11-11 of Pig.

The Pig. 12 shows the front view of a clock generator for the drive mechanism of the illustrated embodiment.

The Pig. 13 shows a section along line 13-13 of FIG

Pig. 12th

The Pig. H is a section along line 14-14 of Pig.

The Pig. 15 is a section through an'an the extraction tube connected transport tube.

The Pig. 16 schematically shows a circuit diagram of the clock control.

As can be seen in detail from the figures, a supply device 10 for liquid samples contains a carrier, e.g. Porm of a turntable 12, which is temporarily rotated by a lifting mechanism to be described in more detail.

909812/0830 -3a-

The turntable 12 has a plate H, the removable Beaker 16 with an open top for the liquid samples, which are arranged side by side in a circular row. For this purpose the plate has 14 a row of holes 18 arranged in a circle; all cups have a shoulder 20 on their circumference, which is on the belt the plate which surrounds the corresponding hole through which the cup protrudes, as can be seen from FIG. One movable removal device 22 for liquids is mounted laterally outside the plate 14 and is located laterally in addition to a stationary container 24 with an open upper part, which is used to supply a washing liquid. The container is also mounted in a suitable manner laterally above the plate 14

-5b- 909812/0830

3> The removal device can be moved to the side in such a way that it is in a position above the cup 16 . above the container 24 ß, and can be swiveled near the top and bottom, whereby it enters or is removed from the container or container, so that part of the sample can be removed,

Furthermore, an agitator 26 is arranged so that it can be moved up and down. so that it can be removed from the Proberibeoher 16 or can be immersed in it if it is in is in the position in which the sampling device can aspirate the sample; from the stirrer the sample is almost during kept in motion throughout the period in which ale eioh is located on the removal device

The extraction device (Figures 3 and A) includes an arm 28 which is attached to the upper end of a rod 30 and carries a curved tube 32 through which an extraction tube 34 of an elastic material runs inside. The inlet end 36 of the tube can be immersed in the liquid of the sample cup or container 24 so that the liquid can be sucked out of it;

co let the opposite end of the sampling tube connect to a

ο ·

<0 suction tube 38 (Figures 1 and 3) of a pump (not beveled)

^ for an analyzer that ι · Β · in the ο HS patent specification 2.797.U9 from June 25, 1957 bteohrieben S is »and with which the liquids are concerned ο

OefäOen can be sucked off.

BATH ORIGIKAL

When the device is in operation, the turntable 12 is temporarily driven so that the samples arrive one after the other to the device 22, from which at least one wedge of the relevant sample is withdrawn

22 and the guiding shaft 26 in a retracted position above the sample collectors 16 so that the movement of the turntable is not hindered * During the last rope of the indexing movement, the removal device moves sideways into a position above the container 24 I have come to a standstill between successive switching movements, so if a sample cup 16 is on the removal device, the agitator and the removal device move together so far downwards until the inlet ends 56 of the removal röin'ü 34 la the

The liquid in the container 24 and a body 40 of the lifting mechanism are immersed in the sample liquid in the beaker, which is located on the extraction device.

While the Entnahtaeröhre 34 from the position in dor the sample is sucked into the position BEV / egt in which the Y / aaohflUssiglceit is drawn, its inlet end 36 is exposed to the air. Ba the pump v / hile the operations of the sample supply unit operates continuously, the air during the period in which the inlet end is exposed to air is sucked into the sample tubes "

909812/0830

Up to a certain time, before the the * 7asohfltteBigfceit is sucked in, the !! removal device is removed from the top the container 24 out and then laterally via a beaker 16 in a position to suck in the sample

the cup in question has previously been brewed in this position by continuing to hold the turntable been. Then the extraction tube is led downwards »Wf Let its inlet 36 immersed in the fluidity test and can suck a rope of the sample from the Be'oher, this movement of the Ijäit-iahraeruhr (from the container of the Washing liquid into the robe puller) gives off Bhrwerk 26 not, and the body 40 of the agitator remains in the rehearsal of the occurrence "how one can determine" lies during this return movement, the insert 36 of the extraction tube is free to air again and sucks in the leat,

Vaehdem the sample from the & cup during a page break « eaugt 1st, which is the same as the suction time of the Wasohflüeelgkelt is «or can differ from this, the agitator and the Sntnahavorriehtung are in common taken out of the sample beaker upwards, before calibration the inlet end 36 of the dehumidifier and the lower end the body of the body 40 Above the upper hand the sample cup are located, the turntable 12 is started again, so that the next sample collector leads to the removal error becomes} the coordinated movements β «of the agitator, the Removal device and the rotation tie before β are in the above described ^ eiee repeated

9098.12 / G83 0 ^BAD ORIGINAL

ig. ^8th

As a result of the above-described assignments, the samples are in order of order in the form of liquid pockets 8 (Pie 15), which are separated from one another by, in between, bursts W of the ash liquid and two juices A, each, separated from one another, fed to the analyzer · sound ate bouts of VTasohflüseigkeit be effectively cleaned the inside walls of tubular passages in the analyzer, so contamination Dafi of a sample of the previous sample is prevented; comes out of this cleaning effect even that of intervening "lufteineobltteee added that" She thrusts the ^T ' Separate the liquid from the sample liquid

The container 24 for the raw liquid preferably contains a device with which the washing liquid, e.g. water, can be continuously supplied so that the predetermined level is maintained during operation. sense and maintain _f

As can be seen from FIG. 2 , a horizontal, stationary plate 42 holds the various files of the clock device a j it can have several legs 44. Above the plate 42 a further, horizontal pin plate is arranged laterally outside the turntable 12 at a certain distance and is connected to it by spacer pins 48 (FIGS. 3 and 7). The two plates 42 and 46 run on the outside. Two laterally offset KlhruagsschrauVen 50 and 52, the upper bath in

909812/0830 '^;'■ ■ '' ^r "BAD

bearing 54 (Figure 5) of the plate 56 rotatably eats while the The lower end is held in bearings 56 of the plate 42 and protrudes through the bearings below the lower moth »tone of the Sohr tube 50, the extraction device 22 and the screw 52, the agitator 26 is set in motion «

The lower part of the rod 30 of the Entnfüiraevorriohtung 22 is fixed in a block 58 * the length of the screw 50 is reraohiebbar and carries a guide pin 60, which drives alternately with screw-shaped grooves 62 and 64 in singular engagement. The groove 62 runs on the outer surface of the screw in a helical path from one end to the opposite end in a direction which is opposite to the direction of the curvature of the groove 64, which is also on the outer surface of the screw helically from one end to the opposite Running along the end. As can be seen from Pig * ir, in which the extraction device is in the suction position, a rotation of the screw 50 in the direction of an arrow 66, ie clockwise in FIGS. 1 and 71, causes the block 58 to move upwards, vas can be traced back to the singing of a lindes 68 of the PUhrunga pin 60 in the groove 62. Xisiaa. the guide pin 60 reaches the end of its path in the groove 62 and with the blook 58 and the removal tube 34 in their upper part, a further rotation of the screw 50 ₉ causes the end 68 of the pin to enter the other groove 64 in the form of a socket the grooves at both ends of the cave are connected to each other

909812/0830

-8th" . bad OBiGlNAt

With a further assignment of the screw in the same

(clockwise) Direction / becomes the pin 60 because of an engagement guided with the groove 64 downwards ·. A more detailed explanation of the construction and operation of the screw 50 is possible not necessary »because such robots and Klhrungeinriohtungen are familiar to the Pachmanu an sioh

Bas agitator 26 includes a housing 70 with one under use mechanical vibrations working RUhrmechanisraua that of an electromagnet (not shown) is actuated, and let nit connected to this mechanism in such a way that it is during operation to mix the sample continuously back and forth · Dem The current is fed to the electromagnet of the oscillating mechanism via wires 72 "which pass through a hollow tube 74" run, from the upper side of which the housing 70 is deceived · Bin Block 58 of the agitator is IMacs of the guide tube 52 for the agitator is movable and becomes in the same way as the Bntnahmebloek 58 kept going, that of the Klung censer 50 is actuated; the screws 50 and 52 namely have the same construction on the block 58 * is also with a guide pin 6o * provided in the same way as the Guide pin 60 of block 58 works

A block 76 is also attached to stretcher 74 the upper surface of the block 58 »rests, do not abort this is fixed. The blook 76 runs between swei laterally offset guide plates eOa and 80b through, They also have a rope 75 of the Bloekea 58 »

9 09812/0830 -9

and a © Brehußß όos Blihrwsrlces prevents when Aleee * is lifted up and down by turning the Sahraube 5a. At their upper and red bath the plates are aa side edge of the flats 46 and 42 featßei3ft _o ht *

Did tube 74 extends through a hole 78 in block 58 *

and by "Soher 79" ad 81 of the plate 42 moved 46 ubä in the Löohera vertically near above and below freely moved, so the Eührwerlc by hand without the rotating ear & uiit SS eu one

Zvreok to the top eehobon are scann that explains the above

iet

50 taid 52 are held by an a uaucehrlsartn motor 62 (Figures 2, 7 and 16) ia.Saag The ten wheel 88 drives the screw 52 of the stirring device because the cog wheel 90 drives the screw 50 by means of an automatic mechanism. Both 88 and 90 rotate in the same direction,

As best seen in Il £ tir 5, the gear 90 is attached to the lower end of the screw 30. The lower end of the screw 52 has a rope 92 to which a bearing 94 is attached warehouse is here "

co gear 88 rotatably baked on «bin body 96 with an in

Tftaf & ngßrlohtung extending shoulder 98 is attached to the lower portion of the part 92 of the screw 52. A coupling, ^di * **? * * Coil spring 99 «ntbOlt, lies against the outside yiUohea one have 100 and 102 of the body « % baw. of the gear

BATH ORIGINAL

88 at, while the entgecengeeetgteii bathe the spring against the cog wheel 80 Va *. the. Shoulder 93 drUoken. , _Λ ,

Venn doe drive wheel 88 dee Suhrnerkes against the TJhr * stubbornness , fde can be seen in Figures 7 «ad 16 * u, aleo

for the siohttmg of the arrows 66 dtr Jicuren 3 «ad 5 ·

80 You see the teder 98 off * utf ± oeln and looÄert eioh on the hooks 100 and 102, so that no drive connection like the saddle wheel 88 and the screw 52 of the drilling rod remains, irena the gear wheel 88, on the other hand, does not look in TOiraeicereinn The bottom of the teder 98 on the handles 100 and 102 "80 that the gear 88 is connected to the body 96" from which the screw 52 of the agitator can be turned clockwise , the screw 50 is rotated door the removal device during rotation of the Kotorsaimrades 84 counterclockwise "while the screw is $ 2 out of operation; During the rotation of the Xotorsahnrades 04 la Ohrseigersinn the two internal screws 50 and 52 la operation

The frictional engagement strlsohen the bath 68 or 68 * des Guide pin 60 bsw. 60 'with the suggestive drive designation 50 or 52 is designed in such a way that the Blöuk 58 and 58 * when turning your sluggish drive tube search - this function is provided for "among other things give the Entnahae-Torriohtung 22 a lateral assignment so that it Sniche of the situation star taking the sample and the situation suä Sieving the liquid can be moved back and forth

9 098 ^ J / 083 0

From the plate 42 a signal pin 104 laüüXt above,

the sioh next to the removal biook 58 (Figures 4A and 7) is located. The plate 46 carries a Klhrungejand 106, τοη the in cooperation with the attachment pin 104 the tilting device 22 is eeitlioh led back and forth and influenced, in particular

in yuhruneerand 106 contains an ana oblag 108, which is the rod 30 intervenes and interrupts the lateral movement after the removal device has come into the position in which the Sample is peeled off · 33 edge 106 also has nooh one further Anaohlag 110, which comes into contact with the rod 30 and stops the ooltlioho ^ movement of the removal device when it has moved it into the position to take up the liquid-jceit 108 and 110 are connected to each other by a section 112, which has the shape of a sector of a circle; the radius is equal to the radial distance between a longitudinal axis 114 (Figure 4A) the removal screw 50 and the surface section. of rod 30, facing the extraction censer; this Hadiu · is indicated by an arrow 116 in Figure 4A

By the rotation of the motor 82 in a clockwise direction pull yourself the turns of the spring 99 so tight that both drive screws 50 and 52 are rotated clockwise, as in Picuren'7 and 16 can be seen} in fig. 5 this rotation takes place in the direction of arrow 66, this also shows! Agitator 26 and the removal device.22 able to in the the body 40 of the agitator and the inlet end 36 of the

_ ₁₂ _ 909812/0830 'bad original

Etttnohaeröhre 34 in a Proberibeoher sue Herauealehea the · By turning the screw 50 and

In the ears, the skin look 58 and the block 56 are deceived vertically as well as above because the pins 60 and 60 'run in the corresponding grooves 62 close to the top Block on adjacent Anaohlagstift 104- rests. In a similar way a rotation of the block 58 "of the clockwork is prevented as a result of the rotation of the very face 52" since there is a sliding engagement of the ropes 75 with the separate wall plates 80a and QOb. As soon as a lower band 118 of the "block is above an upper band 120 of the insole pins 104" which is above the "upper band of the samples above 16", a continued rotation of the stem 50 causes the block 58 to turn into clocks The direction is swiveled to the position between the Enfle 68 and the 51Ue 62 of the Sohraube 50 surUokcuftthren so that a lateral movement of the agitator in the direction of the suction from the suction position of the sample into the suction position of the liquid can be initiated This lateral pivoting movement is moved in reverse direction, see the rod 30 of AnsoHag 108 along the curved section 112 of the plate 46 to the stop 110 "of the

ο 1 & is touched at the moment in which the lateral Einatelloo movement of the boring machine la Uhrseigersi & n stops. As soon The body 40 of the agitator and the inlet end 56 of the intake tube 34 are located above the upper edge of the sample drawer. ^, 16 bev / egen, the Drd43ßoh is set in motion so that the next one

Frobenbeoher eua? The stirrer continues to move at the top, so that it can see the robe hermigeaugen from it. Allocation in Uhrseiseraimi in the saga "has ended, in dtr the 'feeohtltteele k $ it out ^ esogea is * trerdea dwell the continued rotation of the Sohraubea the bottom € 3 and 68 * of the pins place the upper S & that of their respective Sill« 62 moved by a further lärehong de ^ Sohraubea is tlhraeigerei & ii lcosaaen the end of the pen with the Kttlea 64- ia Si & griff. Ba the turns d @? Ililless 64 generally run through a sighting, which runs against the run of the grooves 62, causes a continued "aspiration of the robbers in the watchmaker", that is, the SntnabjBt · Torriuhtung and dns Stlhrrrerlc on the same side nn ^ tx tmtea ia the robes Container 24 for the Waaah · flüselßkelt eenkezi »· Venn eioh da« You are in the correct height ₉ so that the sample can be stirred so that the sample can be agitated without «the dough can be drawn off» the; Uotor 32 is switched off during the period of time »generally which the naeohflüeeigkeit is gesogea *

At the end of this period of time, the motor 82 is generally set again and burnt against the ear ig in accordance with the Piguren 7 and in Xtalauf, ep that the screw 30 rotates counterclockwise "the resulting rotation of the hill" 6i causes the counterclockwise direction, that the removal device

909812/0830

The stirrer remains in the sample beaker, however, because the rotation of the counter-clockwise 88 is unwound and there is no connection between the had 88 and the drive screw 52 of the stirrer If the lower edge 113 of the block 53 moves above the upper end 120 of the stop pin 104, the removal block 58 is moved laterally counter-clockwise by a continued counterclockwise rotation of the socket 50, which results in a frictional engagement between the pin end 68 and the groove 64 of the screw 50 iat. During the lateral movement of the removal device counterclockwise from the position in which the washing liquid is withdrawn back into the position in which the sample is withdrawn, the rod 30 moves against the stop 110 along the circular section 112 of FIG Plate 46 to sun stop 10; at which the lateral Einatellbewegung the removal device stops and aioh the device is in a position to take the sample, Duron a further turn of the screw 50 counterclockwise, the pin end 63 of the guide pin 60 is brought so that it reaches the upper linden of the groove 64 and enters the upper end of the groove 62, so that with a further rotation ^ _{0 of} the drive screw 50 counterclockwise by the rotation of the groove 62 counterclockwise the removal mask

_ * n ^ ch is moved down so that the inlet end of the removal

tube 34 is immersed in the sample so that the sample is aspirated

Yyy can be. At this point, the engine 82 is turned off so that the cycle can begin again. * & AD ORIGINAL

»15-

T / when the cycle starts again, causes (Ue initial threat the screw 52 of the agitator In TOirzeigerriohtung that the StIXt 60 * leaves the HUIe 64 and enters the groove 62, whereupon with a further clockwise rotation the agitator 26 moved at the same time with the withdrawal precaution 22 near the top «

BIe setting movement of the removal device described above 22 up and down and to the side is carried out with a fairly high degree of delicacy "ao that the inlet 36 of the withdrawal" stir 34 in the ftuSeron air only for a fairly short tent exposed, This leaves only a pretty small amount of air sucked in, which is sufficient for the necessary additional cleaning apart from that with the Y / asohflttasigkelt »On this · Travel elapses during the working period of the device As little as possible since to suck in the air, ao that one larger number of samples per unit of time than before can be"

As previously indicated, the turntable is only driven temporarily, so that the sample collectors 16 in the row close to the pre-withdrawal As can be seen from FIGS. 1 and 2, a stationary support plate 122 is arranged above the plate 42 and fastened to this with fasteners 124 "One Support parts 126 for the sample plate 14 is held in bearings 128, <

. j

which are provided in the plate 122 or «42 '· The upper part the '/ hurry wears a collar 130, which at the n'elle accordingly! is fixed} an upper sin 13/2 of the "hurry is forked and carries zvrtfisohen arms 136 pivotably the one end of one

909812/0830 ^

* ~ BAD ORIGINAL

Edge riff it 134. In the middle of the plate 14 is a Sleeve 138 arranged, which is supported on the collar 130 * and through which the upper end 132 of the parts passes.

A resilient clamping plate 140 with an opening 142 in the middle is placed on the upper side of the carrier plate 14 so that it is clipped onto the collar 130? In the illustrated clamped position of the plate, the handle 134 is positioned horizontally, comes into contact with the upper side of the plate 140 and holds it resiliently on the plate 14. Un the plate 14 to be removed is the r _n ndgriff 134! Placed in the vertical iÄge so that the clamping plate 140 and the plate 14 from the tfell "naoh can be lifted above ·

the plate 14 is a circular row of Vteitersohaltöffnungen 144 arranged, the number of which corresponds to the number of openings 18 for the sample drills 16 corresponds to · Suroh the clamping plate 140 Is an actuating pin 146 for a container plugged in, which can be inserted into any pus holding opening 144 can be used so that the 7 number of samples can be set, which are automatic during the operating side of the Samples are to be checked. The pin 146 can ■ can easily be inserted into any opening 144 in that the handle 144 is brought into the vertical position and the clamping plate 140 is lifted near the top, so that the pin 146 is lifted out of the one opening 144 and after turning the clamping plate, in which he with the desired opening 144 is brought into congruence, the clamping plate in their lower ^ fflfl ^^^ by a movement of the

~ ¹⁷ ~ BAD ORIGINAL

Handle 134 down to its vertical clamping fixture can be cycled

The drive mechanism for switching the support plate H contains a gearwheel US old on the circumference of the base 150. it is fixed to a body 152 (FIG. 2) and is driven by a pawl 154 which is actuated by a magnetic coil below the wheel 140 and next to the slots 150 so as to be pivotable. The ends of the latch plate 156 each carry a drive pin 160 to 162; Both pins can be in engagement with a guide edge 164 of the bushes 150 "so that the wheel 148 and the carrier plate 14 can be rotated in a strange way"

Sine Ilasnetspule 166 meets a plunger 168 with a pin 170, which runs through an elongated base 172 which is formed in the pawl plate 156 on the side of the bearing 158. At one end of the plunger 168 is a tension spring 174 connected to the plunger into its position ausgeetreokte NaOH Figure 1 brings 1, trap dl · solenoid is turned off.

The number of slots 150 of the gear corresponds to the number of the openings 18 for the sample drawer 16 · The distance swisohen the Aohee of the pin 160 and the center of the Kiinkenplatte 156 are somewhat smaller than the distance between the Aohs «

909812/0830 -18- ORIGINAL BATHROOM

dee Mtifes 162 and dicoeni mttelpunkt «

When the magnetic coil 166 is excited, the plunger 16ö eemÖÖ in FIGS. 1 and 9 moves into "a European-style position, so that the pin 160 oit the" lead edge 164 - a "neighboring Sohlitsee a" comes into contact and the wheel 148 and the 3 »ragplatte14 must be indexed clockwise · At the same time, the pin 162 leaves a slot b, and an immediately following schiit» ο moves into a position in which the guide edge 164 is in the path of the surtte & honorable pin 162. When the magnet coil is switched off, sees the peder 174 the plunger 163 la an outstretched lass surttok "in which the pin 162 gets into the Danish Sohlits o and touches the door hunger" whereby the vertical movement of the support plate is completed. As a result of the different abetandea of the pins 160 and 162 in relation to the center of rotation of the Xlinlraticurpera 156, the pin 160 does not move madly into the slot a; only the pin 162 engages completely into the slots b and o and touches a circular base 176 during the temporary periods of the disk 14 between the holding movements, so that the disk is then locked in this position instead of the magnetic coil 168 Another mechanism for actuating the latch body 154 may also be provided

As already stated, the ratio of the length of time of the evacuation at the time of the aspiration of the sample according to

9098 12 / 0830-19- BADORLGiNAL

the Brfindung set and changed ', -. Ground · 2u this purpose, a "Seitgeber 178 provided that in FIGS. 12 - 14 to see the" Seltmann encoder contains a motor 18O ₉ of 3v / ei interlocking 3ahnr ^fi .the 182 drives, of which a drum 184 is rotated. Two firmly connected pins 186 and a movable pin 188 tapering to a point and loaded by a spring protrude from one end face of the doorway. The pins are arranged symmetrically to each other and to the center of the drum and have a certain trajectory from the front edge of the drum towards the inside. A guide disk 190 provided with openings and serving as a guide can be taken from the drum, which has raised sections 192 distributed over the circumference and cutouts 194 in between, of which the length of the time span dee Auav & sohene or the time span for sucking in the samples is determined.

The Soheibe 190 can be quite thin of a slightly sohneidboren material made earth v /, so that the tfUhrun ^ sflachen 192 and 194 easily distributed as desired and numerous ratios of ^v 'Asoh ~ hu Prüfzeitspannen conveniently provided v / ground T & Qraien * The Soheibe is easy to The drum 184 is supported by just placing an inner band 196 against the pins 186 and moving the sole in alignment with the Ironrael, with the wheel 196 engaging the pointed end of the pin 188 and the pin around a pin 200 against the clamping force of a 909812/0830

-20 ·

BATH ORIGINAL

Compression spring I98 la the dnrgontellt by misgeaocene lines position of the Pi (HiT 14 is swiveled; here the bond runs 196 free Uber.dae -üide dee ntiftee away “BeUi becoming free With the pin, an offshoot of the disc gets into one Sohlita 202 * and the disc is removable on the Drum attached · By des Bitteriff dee Stifee 183 nit a portion of the disk 100 at the shiit »202 tdrd ttfaresd dee Arbeitegnngee dee leltgebera eise axial sprinkling of the This prevents longitudinal direction bu of the drum.

A GesSose 204 dea ^ eitftebera defeats one face of one 8osllts 206, through the ice PUhrungeorm 20 :) hisdureh goes «the nit the ftt & ruacerasd of the 'feltgefeereoheibe 190 springy in Touch is held. 7) he Arn 205 becomes tos ice plate 210 worn, the eohvenkbar within <S * e housing 204 dee tent- · gebera esgebrnoht let · Sine serving to tension the door »spring 212 lies against the iron hand of a pint of 210 Rn and sMlt of the guide arm old the 3eltgeb * rohelbe Is springier Touch · Inside the housing 204 let ice arm 214 swiveling nnecbrcoht, Is its Aueeohnitt 216 the TUhrunge · arm 208 can intervene «who here, from the timer · eeheibe is released, put out of operation, separates the ^ eltgebereoheibe auegev / eoheelt is to be. Sound the arm 214 comes in Pin 21Θ through an opening 220 through it, the one is the front of the housing 204 so that the arm 214 can be operated by hand

The FUhruncsarm 203 operates a Soholter 222 of the timer, The actuating arm 224 is calibrated in the path of the PfUirungearnee 20Θ

- ²¹ - 909812/0830 SADOr ₁ GINAL

j is with servants Arm'224 he koraat during the period tu 33ingriff _t in which it into the cutouts 194 of the feitgetoerscheibe into fills "and the time period for the daa aspiration of the sample. ¹ corresponds.

In addition to the encoder and its associated switch 222, the operation of the device is influenced by several other switches. A switch ■ 226 responds to the position of the tapping device * to, \ ia & SiOH them in the position "to sucking the rrobe located. The holder is carried by the plate 42; its actuation arm 228 (Pigur 7) runs through an opening 250 of this riatte 42 and protrudes into the path of the removal blank 53.

Raised the switch 226 there is another switch 232, which indicates the position of the removal device when this is in a position in which the waeohflUaeigfcelt from the container 24 turn feana · An actuating arm 234 (Elcuren 7 and O) dee nahaltera protrudes through an opening 236 of the plate 42 into the cloa Blookea 50 * for long rUlm / ork «

From the plate 122 (Figures 2 »2 and 11) a Switch 238 held, 'whose actuating arm 240 is located in the fire of the pin 146' and which operates automatically determines the total number of samples fed to the analyzer during a working period v / should be grounded.

-M-

909812 / 083U

BATH

A switch 242 (Figures 5 and 6), with which the operation of the vibration mechanism in the agitator 26 can be influenced, is attached to plate 46 and guide plate 80b and has a cutout 244 at its upper end. The housing 70 of the agitator can go up so far by hand be lifted until the block 76 of the agitator is in the position of the cutout; at the same time the housing be rotated by 90 ° into the position in which the block is located above an actuating button 246 of the switch 238 is located. The agitator can then be lowered until the bracket 76 rests on the housing of the switch 242; then the agitator is put out of operation and is supported above the sample plate 14. In this position, the actuating button 246 of the switch is operated, as can be seen in FIG is; the switch is opened and the oscillating mechanism of the agitator is switched off.

A switch 248 (Figures 3, 5 and 6) is attached to an arm 250 which is attached to the other guide plate 80a (Figure 7) is moored. An actuating arm 252 of the switch is in the path of the block 76 so that this switch is on a vertical position of the agitator responds.

The control and mode of operation of the device will now be described in particular in connection with FIG. During the preparation of the device, in which the removal device is in the position in which the washing liquid can be drawn off, as shown in FIG. 16, the actuating arm is at a standstill

909812/0830
-23- ·

234 of switch 252 in contact with removal mask 58; concurrently movable contacts 254a and 254b of the switch are in this case of stationary contacts 256a BSW. 256b dea shoulder loosened. The moving contact 258 of the switch. 230 is in contact with a stationary contact 260 of the switch and is separated from a stationary contact 262. This is the position of the contacts of the switch ro 233 at the end of a working period of the device, which can be traced back to the actuation of the switch by means of a single handle doo pin 146 with its control button 240, which influences the movement of contact 253. Vom.Geholter 238 If a bell 263 is ringed, a manually operated socket 264 is located in the circuit of the bell and is normally closed, so that when the movable contact 258 of the switch 233 is actuated and its stationary contact is touched 260 at the end of the work since the device was energized, the bell is excited and informs the operator that the device has finished its activity. Then the holder 264 is opened and the bell 262 is turned off; He is therefore in the open position while preparing the Gerft tea for a work session.

The reversible motor 82 operates on a capacitor 268 and two stator coils 266a and 266b, which are at an angle of 90 ° to each other are arranged .. Sr starts by itself and rotates against the clock » clockwise naoh. Figure 16, if, an initial clergy 270a with a line 12 is in communication while he is Im Uhraeieersina rotates if an output terminal; 270b. to the line 12 connected lato '

· .- ■■ - -24 »

909 812/083 0 BAD original

During the preparation of the device, it is not in operation, as indicated by the dashed lines in FIG. In this lateral, outer, switched-off position of the agitator, the drive table 14 can be removed and reinserted into the device, while the removal torch 22 is in the container 24 of the tank liquid arranged that the B Mitigungeetift 146 is in the correct opening 144, ". al "a predetermined number of samples the analyzer suge ^ i ^ t be Icann, the handle 134 then felrd In the Klenmla _& e brought · The ProbensufUhrgerät is now: Turnkey"

So that the device can work, the agitator is manually inserted into the sample beaker 16, which is then located next to the removal device 22} This closes the switch 242 so that the contact 272 contacts the contact 274. Then the switch 264 is closed and the movable arm 240 of the switch 230 is actuated by no means so that the movable contact 258 comes into contact with the stationary contact 262 of the switch. The timer disk 190 has the required run-offs by which the ratio of the "asoh- and test timespan is determined. If the extraction device is in the vessel with excess fluid, the timer drum 184 is set so that the control arm 208 des." Timer touches the raised part 192 of the timer base, of which the length

-25- 9098 12/08 * 0 «AD Oft, _{ä / NAL}

the "'.-. axis is determined by voltage · I am located in a line II home tachrdter 276 ^i> / is closed, so that the Gernt no'commences operation ·

When the switch 276 closes, the excitation circuit for the timer 180 is switched via the line L1 to the switch 276, a line 276, the motor 180, further lines 200 to 280, the switch 238, further lines 290 and 2 ^C J2 line ' L2 established. No power is supplied to the motor 32 if its fault circuit at the switch 222 of the side switch and at the son 232 is open.

When the timer is wet, the hot disk 190 rotates so that the paddle arm 208 falls from the raised portion 192 into the cutout 194; As a result, the sampling device v - *> n of the T.'aochflüBaickeit is transferred to the sample, before the sample liquid is sucked in. As a result of the occupancy of the Pührun ^ sarnes 203, a movable contact 294 of the son 222 is brought into contact with a stationary contact 296 of the switch, so that the energizing circuit for is the motor 02 is closed and this forgotten clockwise to rotate in accordance with Figure 16 starts · the full excitation circuit leads from the line Ii1 via the switch 276, lines 298 and 300 to a Eingnngsklenme 302 of the motor and from there via the Rtatorwioklung 266a and also via the Ktatorwioklung 260b and the capacitor 263 to the terminal 27oa. From the engine of nioht ntron but i ^flows: via the terminal 270b,

-26- ORiGiNAL BATHROOM

90981 2 / Ü 8 3 above

because the AeT terminal outgoing input circles whether switch 232 is open. From the terminal 270a the current flows over a line 304, a fixed contact 306, a movable contact 308 of the switch 226, a line 310, over the now closed contacts 296 and 294 of the side sender 222 »over lines 312, 202-288, the switch 238 and via lines 290 and 292 to the line 12 · by! rotation äe3 Mo.tors counterclockwise, the ÜntiiaJimevorrichtung moved vertically upwards from \ the container of the T / aaohflüesiglceit hersraa whereby eioh the movable contact 254a and 254b of Switch 232 sohlieöt · By a continued vertical movement nnoh above, the bottom 118 of the inner surface 58 passes over the upper bath 120 of the attachment pin 104 "o doQ eioh the Hattiahmvoriohtung free to turn clockwise to a position in which the sample can turn back from the Cup is sucked off. Once this position has been reached, the removal device ^ yök-öie-weitejfe-Btfekttngöe3-He ^: keä? S ^< -83 ~ £ i & e-5Ji ^: SHa2iH © ve - counterclockwise vertically moved down so that the inlet end of the sampling tube 34 is immersed in the sample; at the same time the bottom 118 of the contact block 58 touches the actuating arm 225 of the switch and opens the switch, whereby the contacts 307 and 308 are released and the engine is switched off; the period of time for the co- transfer of the removal device from the container of the 'Tason-

liquid to the! Trobenbecher 'is now finished, whereupon the The sample starts to be sucked in * During this perturbation period the agitator remains in the fluid sample in the beaker; as already explained, is namely through the rotation

-27-

. . . BUILDING

the motor against dan clockwise, the spring clutch 99 inoperative.

As the timer continues to run, the guide disk is rotated through an angle such that the guide arm 208 comes to the raised portion 192 so that the retransfer the removal device for washing liquid can begin so that the washing liquid can be sucked in again can. Moving the guide arm 208 onto the raised portion of the timer disc makes the movable contact 294 of the timer switch 222 with a stationary contact 314 the timer switch brought into contact. This causes the motor 82 to rotate clockwise because of the Excitation circuit for the motor from line L1, closed switch 276, lines 298 and 300 to the input terminal 302 of the engine are closed. Flows from the input terminal the current through the stator coil 266b and also through the stator coil 266a and the capacitor 266 to the output terminal 270bι Since switch 226 is open, no current flows across the Output terminal 170a gone. The current flows from terminal 270b via a line 316, the> now closed contacts 256 and 254a of the switch 232, via a conductor 318 which are now closed Contacts 3H and 294 of timer switch 222, lines 312, 282, 284 and 320, now closed

y, contacts 254b and 256b of switch 232 and line 292

cd to line L2. By turning the motor 82 clockwise

- * meaning the agitator and the extraction device are moved vertically "^ upwards; if the lower end of the agitator is above _u -> half of the upper edge of the conquering cup, the

Actuating arm 252 of switch 248 from agitator block 76 taken, whereby a movable contact 322 of the switch with

'—28— one

Fixed contact 324 comes into contact • The excitation circuit of the coil 166 from the line L1 via the closed switch 276, lines 298, 326 and 328, the now closed contact * 322 and 324 of switch 248, a line 330, you coil * i66 itself, the lines 332,

• 284 and 320, übe *, the closed contacts 254b and 256b of the Container 232 "and di <* line 292 to line L2 closed When the coil 166 is turned, the sample plate 14 becomes partially continued as previously explained? when moving

'· Of the agitator after xmten' nirö "the actuating arm 252 of the switch released, whereby the coil is switched off and the r / pus-

■ "Switch assignment on the test plate has been terminated further rotation of the Kotojrs 82 in the ühr-aelGerslna moved · eioh

• the 2atnahnierorriöhtung in the container 24 of the washing liquid into it so that the elastic fluid can be sucked out of it

'can} the contacts of switch 232 are then opened, and the engine is switched off. The anoaug cycle of the rasoh-

• liquid and the sample liquid is now complete, so that the device can repeat the cycle

After a certain number of cycles has been completed and a certain number of samples have been added, the resulting position causes the pin 146 to engage with the actuating arm 240 of the switch 238 so that the contacts 258 and 260 of the Close the switch and the bell 262 is energized ; then the operator knows that the work cycle of the ο device has ended. At the same time, the operator opens the

.w · soholter 264, interrupts the bell and opens the Sohalter 276,

“AD ORIGINAL

around the GerJit from "usteilen · V / hen the operator forgets" the 'switch 276 can be opened, the samples v / ground but nioht further from the Trobenbechern herijiusge sucks seibat when the Zoitceber further iirbeiiet since the Erreecrkreiee of the motor 82 stay open; the contacts of the Soholtere and the contacts 253 and 262 of the switch 238 are open. As a result of the contact setting of the timer * » switch 222, the motor cannot be energized * the device continues to only supply washing liquid, since the suction pump of the analyzer continues to work *

-30- ^ßAD

909812/0830

Claims (6)

P 15 23 060. 9 September 4, 1968 RevS-Al- "5374. Technieon Instrumats Corporation. "^ Patent claims rf) Sampler for automatic analyzers with a number of Sample vessels arranged on a turntable, which one after the other as the turntable is indexed be guided past a removal station, with a container filled with a washing liquid and with a sampling tube, which by means of a drive mechanism alternately immersed in the detergent container and the sample vessels passed one after the other at the removal station is, characterized in that with the drive mechanism (50, 58) an automatic Clock generator (180, 190) is coupled, under the control of which the sampling tube (34) quickly into the sample vessels (16) or submerged and withdrawn from the detergent container (24) and rapidly from one position is pivoted over a sample vessel into a position over the detergent container or vice versa, and that the clock is adjustable in such a way that the time segments during which the sampling tube enters the sample vessels or immersed in the detergent container are freely selectable. 9098 12/0830 2) Sampler according to claim "!, Characterized in that the sampling tube is immersed in each of the sample vessels for a longer period of time than in each case in the detergent container. 3) sampler according to claim 1 or 2, daduroh in that the clock comprises a control disc (192, 194), which is characteristic replaceable releasably retained in its operative position and it easily by another control disc having different Ze. 4) Sampler according to one of claims 1 to 3 »characterized in that, in addition, a stirrer (40) is provided, the time before the extraction tube automatically in; the sample vessel is immersed and at least as long remains immersed in this until the extraction tube is also immersed. 5) Sampler according to one of claims 1 to 4, characterized in that the mechanism (50, 58, 52, 58 ') the extraction tube (34) straight down or up into the vessel (16) or out of this and into co the container (24) for the washing liquid in and out ο this can be moved out, and that the extraction tube (34) CO \ ^ can be rotated quickly in between when it is removed from the containers ο (16) and the container (24) for the washing liquid. ^ Is taken, whereby it is brought into a position over the receptacles. (16) and over the container (24) of the washing liquid. -2- 6. Sampler according to one of claims 1 to 5, characterized it is worth knowing that the clock has one with you constant speed electric motor, which drives a control disc, whose cams and notches, which control an electrical switch that operates the drive mechanism, easily adjustable in length are. 909812/0830