CN110361493A - A kind of multidigit automatic sampling apparatus - Google Patents

Abstract

The invention discloses a kind of multidigit automatic sampling apparatus, including sample disc component, sampling component, bracket and sample cell, sample disc component and sampling component are rack-mount, the rotary shaft of sample disc is horizontal direction, several sample cells are uniformly distributed along the circumference inner ring and outer ring of sample disc component, it is horizontal positioned to be parallel to axis direction, and sample disc component drives sample cell along the circumferential direction to move when rotating around its own axis.Sampling component is located at the lower section of sample disc component, and sampling component drives with vertical lifting and drives along the folding of sample cell axis.Sample disc component includes turntable, rotary tray motor, turntable driving and reed, the shaft of turntable is rack-mount by bearing support, rotary tray motor is also mounted on bracket, the shaft of rotary tray motor and turntable is driven by turntable and is sequentially connected, the circumference of turntable is equipped with several reeds, and reed clamps sample cell.

Description

A kind of multidigit automatic sampling apparatus

Technical field

The present invention relates to field of analytic instrument, specifically a kind of multidigit automatic sampling apparatus.

Background technique

Thermal desorption injection technology is by solid sample or to be adsorbed with the adsorption tube of determinand and be placed in thermal desorption device, the dress Set and be directly connected to chromatograph and (also have independently installed model), carrier gas by the adsorption tube of thermal desorption device enter chromatograph into Sample mouth.When thermal desorption device increases temperature, volatile component is released from solid sample or adsorbent, is entered with carrier gas Gas chromatography system carries out analysis measurement.

In the prior art, it is solid along the vertical direction across upper sample disc to generally use sample cell for thermal desorptioner automatic sample handling system (lower sample disc opens aperture and sampling needle is facilitated to prick, but sample cell cannot pass through lower sample disc), upper and lower sample are scheduled in lower sample disc Disk is fixed on the axis of stepper motor by coupling spindle.When sample disc since stepper motor drive turns over certain angle, make sample When lower interface is just aligned sampling needle up and down in quality control (upper and lower sampling needle is attached separately on electric pushrod up and down), start power-on and power-off Dynamic push rod is sampled

These sample modes have the disadvantage that

1. sample cell is vertically-mounted, for filler due to being soon compacted under gravity, there is gap in top in sample cell, this Sample influences the uniform flow of sampling efficiency and sampling；

2. sampling in such a way that needle pricks gasket, sample cell gasket, which is easily pricked, badly leads to sample cell gas leakage, influences to divide Accuracy is analysed, needs to frequently replace the gasket of sample cell thus；

3. sample cell is placed in sample disc up and down, since the hole of upper and lower sample disc is larger, positioning of the sample cell in sample disc It is insecure, it is not easy sampling；

4. sampling needle respectively has an electric pushrod about, using two motors, takes up space big, energy consumption is high, use cost It is high；

5. sample disc is horizontally mounted, it is larger that equipment occupies laboratory plane space.

Summary of the invention

The purpose of the present invention is to provide a kind of multidigit automatic sampling apparatus, to solve the problems of the prior art.

To achieve the above object, the invention provides the following technical scheme:

A kind of multidigit automatic sampling apparatus, including sample disc component, sampling component, bracket and sample cell, sample disc component Rack-mount with sampling component, the rotary shaft of sample disc is horizontal direction, circumference of several sample cells along sample disc component Inner ring and outer ring is uniformly distributed, it is horizontal positioned to be parallel to axis direction, and sample disc component drives when rotating around its own axis Sample cell along the circumferential direction moves.Sampling component is located at the lower section of sample disc component, sampling component with vertical lifting driving and Folding along sample cell axis drives.

Sample cell is horizontally mounted on sample disc component, can prevent the sample in sample cell due to gravity heap Product is uneven, and when impact analysis desorbs sample effect.When sample cell reaches lowest part with the rotation of sample disc, sampling component rises And sample cell is clamped from both ends, it is removed and is placed in heating device, then pass through gas circuit for the sample gas in sample cell Towards analyzer.There is the installation site of dozens of sample cell in sample disc, and after sample cell is analyzed in lower section, with sample disc When gradually rotating to upper position, can easily remove the sample cell of analysis is completed and be put into new sample cell continue into Row analysis, to realize the continuous analysis of unlimited digit sample, greatly improves the convenience of preparation of samples process.

Further, sample disc component includes that turntable, rotary tray motor, turntable driving and reed, the shaft of turntable pass through axis Hold that support is rack-mount, and rotary tray motor is also mounted on bracket, the shaft of rotary tray motor and turntable passes through turntable driving biography The circumference of dynamic connection, turntable is equipped with several reeds, and reed clamps sample cell.

The reed for being fixed on disk peripheral clamps sample cell, and in order to preferably utilize space, reed is along disk peripheral Side is set up staggered two layers, compact-sized.Sample cell is clamped using reed structure, spring need to only be overcome with taking-up process by being put into Piece elastic force can be realized, very convenient.Turntable is driven by rotary tray motor to be rotated, and the turntable driving between them can be logical The forms such as one group of gear or turbine and worm are crossed, shaft coupling form is also possible to, wherein turbine and worm or bevel-gear sett form Mounting means can change the output axis direction of rotary tray motor, and the space along turntable axial direction can be saved in device design to be needed It asks, is conducive to compact-sized.

Further, sampling component includes bottom plate, lifting driving assembly, lifting seat board, clamping driving assembly, clamping plate, adopts Sample head assembly and heating device, bottom plate is rack-mount using fastener, lifting driving assembly connecting bottom board and lifting seat board, Lifting driving assembly driving lifting seat board is gone up and down, and clamping driving assembly connection lifting seat board and clamping plate clamp driving assembly Driving clamping plate is moved along sample cell axis, and installation sampling head assembly on clamping plate, sampling head assembly is located at sample cell axis side Be located at sample cell two sides upwards, heating device is mounted on bottom plate, heating device be located at two sampling head assembly lines just under Side.

As optimization, thermal insulating warm-keeping layer can be set outside heating device.

Bottom plate is the basic mounting plate of remaining part in sampling component, and bottom plate can be a part of bracket, pacify on bottom plate The lifting driving assembly driving lifting seat board of dress carries out elevating movement together with component thereon together, and clamping plate passes through clamping driving group Part is connected on lifting seat board, is not only obtained the elevating movement feature of lifting seat board, can also be driven by clamping driving assembly, edge The axis parallel with sample cell axis is moved, and clamping plate lifting links with folding, and sampling head assembly is allowed to be able to be increased to and turn The both ends of disk bottom sample cell, sample head assembly after it is close to each other, clamp sample cell both ends, then go up and down driving assembly Starting, sample cell is removed from sample disc, sample cell is allowed to drop on heating device, post heating device starting to sample cell into Row heating, the interior sample adsorbed of sample cell, which is evaporated, to be left sampling head assembly by the plenum duct at both ends and is sent to analysis Instrument after analysis, closes heating device, and sampling head assembly clamps sample cell, and lifting driving assembly is again started up, by sample cell The reed structure for pushing back sample disc again is lifted, head assembly is then sampled and is located remotely from each other, unclamp sample cell, go up and down driving assembly band Dynamic lifting seat board declines together with component thereon, completes an analytical cycle.

Going up and down driving assembly can be determined with the limit of sports record position for clamping driving assembly by way of limit switch, and Since the structure size of present apparatus turntable and sampling component all already determines, so, it can also be by accurately controlling lifting driving Component carries out extreme position positioning with the operation stroke for clamping driving assembly.

As optimization, goes up and down driving assembly and clamping driving assembly is the transmission of screw rod form；

Lifting driving assembly includes lifting motor, lifting driving, elevating screw nut and elevating screw, lifting motor installation On bottom plate or bracket, the both ends of elevating screw pass through bearing support and are vertically installed on bottom plate or bracket, on elevating screw Elevating screw nut is screwed, elevating screw nut is fixedly connected with lifting seat board, and lifting motor drives lifting by lifting driving Screw rod rotation；

Clamping driving assembly includes clamping motor, clamping transmission, clamping feed screw nut and clamping screw rod, clamping motor installation On lifting seat board, clamping screw both end is mounted on lifting seat board by bearing support, clamping screw rod axis and sample cell axis Line is parallel, clamps and screws two oppositely oriented clamping feed screw nuts on screw rod, clamping feed screw nut respectively with two clamping plates It is fixedly connected, clamping motor drives clamping screw rod rotation by clamping transmission；

Lifting driving and clamping transmission are toothed belt transmission.

The driving of screw rod form, structure arrangement is upper compact, saves space.When operation, the rotation of lifting motor passes through lifting Driving is transmitted on elevating screw, and the rotation of elevating screw drives the lifting of elevating screw nut, completes forms of motion conversion, together Reason clamps the rotation of screw rod while being transmitted on two oppositely oriented clamping feed screw nuts, to clamp the rotational energy of screw rod Two clamping plates are driven to be opened and closed.The transmission of screw pair form also has self-locking function, can only screw rod rotation drive feed screw nut It is mobile, it cannot reversed play.Toothed belt transmission loosens after long-time use in order to prevent or when installation adjusts mounting distance, can be with One group of tensioning wheel is added to be tensioned.

As optimization, lifting motor and clamping motor are the stepper motor with turbine and worm retarder.Elevating screw and Clamping screw rod does not need very big speed, needs decelerating through motor, and the stepper motor with turbine and worm retarder is not only transported The dynamic convenient accurate control of stroke, also increases by one of latching point at motor, prevents lifting seat board and clamping plate in motor stop motion Appearance position deviates afterwards.

As optimization, clamping driving assembly further includes guide rod, and guide rod both ends are connected on lifting seat board, and guide rod is worn It crosses clamping plate, sliding sleeve or linear bearing is set on the contact surface of guide rod and clamping plate；Elevating screw nut and elevating screw, clamping Feed screw nut and clamping screw rod are ball wire bar pair.

Guide rod is more steady smooth by the translation of clamping plate, and ball wire bar pair is also transported compared to common threaded screw rod pair It is more smoothly capable.

Further, sample tube assembly includes tube body and the end cap that tube body both ends are arranged in, and end cap uses plug-in disconnecting Structure is sealed: end cap includes end cap, spiral cover, pin button and spring, and tube body both ends are arranged end cap, and the circumference of tube body and end cap connects Sealing ring is set in contacting surface, and several air passing holes are arranged in end cap on the axial wall surface of tube body, and end cap is away from one end of tube body Straight-run of pipe, straight tube is interior by pin button and spring, and straight tube outer wall is combined with spiral cover, and stepped hole is arranged in spiral cover, and stepped hole is maximum Hole is screwed with end cap, and sealing ring is arranged in spiral cover and the end cap place of screwing, and thieff hatch is arranged in stepped hole bottom outwardly, and pin button includes pin rod With the rotary table for being connected in pin rod one end, pin rod is towards tube body and is inserted into end cap center, and rotary table deviates from tube body, and spring is set in pin rod It goes up and is located between rotary table and end cap, sealing ring is set between stepped hole bottom and pin button rotary table in spiral cover, in the reset of spring Under state, pin button rotary table is located in spiral cover stepped hole, pin button rotary table and thieff hatch sealing ring between interior table end face pressed Tightly；

Sampling head assembly includes that sampling pipe, sampling sealing ring and conduit saddle, conduit saddle are fixed on clamping plate, and sampling pipe includes column Head, sampling pipe are inserted into conduit saddle, column cap towards sample cell, offer the gas port that center is extended to from surface on column cap, on column cap It is also arranged with sampling sealing ring, column cap diameter is less than sampling bore dia.

The end of sample cell is using pin button, spring and some sealing rings for sealing, and in sampling, column cap insertion is sampled In hole and pin button rotary table is pushed to squeeze spring, the sealing ring for selling button rotary table and thieff hatch inner peripheries disengages, and manages intracorporal sample It is so incensed that then to reach the end of sampling pipe from the gas port in stigma surface to contact by air passing hole and around pin button with column cap Guided by subsequent pipeline toward analyzer, when sampling, sampling sealing ring abuts against spiral cover and sampling pipe simultaneously, prevent sample gas from It lets out at the gap of thieff hatch and column cap.

Extraneous column cap only needs to be inserted into thieff hatch and can guide the sample gas in sample cell, after end of operation The connection of extraction, plug-in does not damage sample cell end seal, thus sample cell can repeatedly use and The problem of without worrying end part seal decline.

Compared with prior art, the beneficial effects of the present invention are: it is of the invention:

1. sample cell is horizontally mounted, avoid in the case of vertical place because caused by gravity and gas shock filler fill out Fill it is uneven, generate phenomena such as gap；

2. sample pipe end-cap uses new disconnecting mechanism, common sealing pad mode sealing is not used, with sealing ring and pin button Form sealing, while increasing sealing reliability, sample cell is converted to sampling aeration status from sealing state with can be convenient: pipe Road automatically forms sealing when disconnecting, squeeze spring after sample lines insertion and automatically form gas passage；

3. sample cell clamps sample cell, sample cell merging and taking-up on the left and right reed of turntable, using reed structure The automatic operation process of movement is convenient reliable；

4. or so sampling pipe be separately mounted on the feed screw nut of positive and negative tooth, with a worm and gear decelerating step motor band Dynamic, left and right sampling pipe is easily sampled into the both ends of sample cell very much；

5. screw rod driving force uses the stepper motor with worm-gear speed reducer.This driving mechanism has self-locking function, Can driving mechanism power off in the state of holding torque it is constant, will not gas leakage due to power-off；

6. turntable has many sample positions, space is mutually indepedent, when turntable goes to certain angle, completes the sample of analysis Pipe goes to top, and operator can remove the sample cell analyzed at any time, change new sample cell, realizes the company of unlimited digit Continuous analysis, it is high-efficient；

7. device overall compact, occupancy lab space is small, and capacity is big.

Detailed description of the invention

In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing The present invention is described in further detail.

Fig. 1 is construction profile figure of the invention；

Fig. 2 is the structural schematic diagram of sample disc component of the present invention；

Fig. 3 is the structural schematic diagram of sampling component of the present invention；

Fig. 4 is present invention sampling head assembly, the mounting structure schematic diagram of heating device and sample cell；

Fig. 5 is the view A-A in Fig. 4；

Fig. 6 is the structural schematic diagram that head assembly and sample cell are sampled when sampling in Fig. 5.

In figure: 1- sample disc component, 11- turntable, 12- rotary tray motor, the transmission of 13- turntable, 14- reed, 2- sampling component, 21- bottom plate, 22- lifting driving assembly, 221- lifting motor, 222- lifting and driving, 223- elevating screw nut, 224- go up and down silk Bar, 23- go up and down seat board, 24- clamps driving assembly, 241- clamping motor, 242- clamping is driven, 243- clamps feed screw nut, 244- clamps screw rod, 245- guide rod, 25- clamping plate, 26- and samples head assembly, 261- sampling pipe, 2611- column cap, 2612- air guide Hole, 262- sample sealing ring, 263- conduit saddle, 27- heating device, 3- bracket, 9- sample cell, 91- tube body, 92- end cap, 921- mistake Stomata, 93- spiral cover, 931- thieff hatch, 94- sell button, 95- spring.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

As shown in Figure 1, a kind of multidigit automatic sampling apparatus, including sample disc component 1, sampling component 2, bracket 3 and sample Pipe 9, sample disc component 1 and sampling component 2 are mounted on bracket 3, and several sample cells 9 are parallel to each other and are disposed horizontally in sample On disk component 1, the part that sample disc component 1 places sample cell 9 can be rotated around the horizontal axis parallel with 9 axis of sample cell, Sampling component 2 is located at the lower section of sample disc component 1, and sampling component 2 is with vertical lifting driving and along the folding of 9 axis of sample cell Driving.

Sample cell 9 it is horizontal be mounted on sample disc component 1, the sample in sample cell 9 can be prevented due to gravity and Consolidation is accumulated, when impact analysis desorbs sample effect.The sample cell 9 being placed on sample disc component 1 is come most with rotation When lower, sampling component 2 rises and clamps sample cell 9 from both ends, is then led to the sample gas in sample cell 9 by gas circuit Analyzer.After the turntable rotated can circumferentially place many sample cells 9, and sample cell 9 is analyzed in lower section, The pipe analyzed can be taken away from above and be put into new sample cell 9, do not shut down the continuous analysis in ground, service efficiency is high.

As shown in Fig. 2, sample disc component 1 includes turntable 11, rotary tray motor 12, turntable driving 13 and reed 14, turntable 11 Shaft be mounted on bracket 3 by bearing support, rotary tray motor 12 is also mounted on bracket 3, rotary tray motor 12 and turntable 11 Shaft by 13 transmission connection of turntable driving, the circumference of turntable 11 is equipped with several reeds 14, and reed 14 clamps sample cell 9。

The reed 14 for being fixed on 11 circumference of turntable clamps sample cell 9, and more firm in order to install, reed 14 is in turntable 11 It is arranged on radius staggered two layers, as shown in Fig. 2, compact-sized, space utilization rate is high, is arranged two at the both ends of sample cell 9 Even more reeds 14 are for clamping, the method for clamping of 14 form of reed, are put into and take out very convenient, need to only overcome elastic force , by the driving rotation of rotary tray motor 12, the turntable driving 13 between them can be through one group of gear or whirlpool turntable 11 The forms such as worm and gear are also possible to shaft coupling form, and wherein turbine and worm or the mounting means of bevel-gear sett form can change The output axis direction for becoming rotary tray motor 12 can save the space requirement axial along turntable 11 in device design, be conducive to tie Structure is compact.

As shown in figure 3, sampling component 2 includes bottom plate 21, lifting driving assembly 22, lifting seat board 23, clamping driving assembly 24, clamping plate 25, sampling head assembly 26 and heating device 27, bottom plate 21 are mounted on bracket 3 using fastener, go up and down driving assembly 22 connecting bottom boards 21 and lifting seat board 23, the lifting driving lifting seat board 23 of driving assembly 22 are gone up and down, and driving assembly 24 is clamped Connection lifting seat board 23 and clamping plate 25, clamping driving assembly 24 drives clamping plate 25 to be moved along 9 axis of sample cell, on clamping plate 25 Installation sampling head assembly 26, sampling head assembly 26, which is located on 9 axis direction of sample cell, is located at 9 two sides of sample cell, heating device 27 It is mounted on bottom plate 21, heating device 27 is located at the underface of two sampling 26 lines of head assembly.

Bottom plate 21 is the basic mounting plate of remaining part in sampling component 2, and bottom plate 21 can be a part of bracket 3, bottom The lifting driving assembly 22 driving lifting seat board 23 installed on plate 21 carries out elevating movement, clamping plate 25 together with component thereon together It is connected on lifting seat board 23 by clamping driving assembly 24, not only obtains the elevating movement feature of lifting seat board 23, it can also be with It is driven by clamping driving assembly 24, is moved along the axis parallel with 9 axis of sample cell, the lifting of clamping plate 23 joins with folding It is dynamic, it allows sampling head assembly 26 to be able to be increased to the both ends of 11 bottom sample cell 9 of turntable, is mutually leaned on after sampling head assembly 26 Closely, 9 both ends of sample cell are clamped, driving assembly 22 is then gone up and down and starts, remove sample cell 9, sample cell 9 is allowed to drop to heating dress Set on 27, the starting of post heating device 27 sample cell 9 is heated, sample in desorption tube, and the plenum duct for passing through both ends It leaves sampling head assembly 26 and is sent to analyzer, after analysis, close heating device 27, sampling head assembly 26 clamps sample cell 9, lifting driving assembly 22 is again started up, and sends sample cell 9 back to turntable 11 again, is then sampled head assembly 26 and is located remotely from each other, pine Sample cell 9 is opened, lifting driving assembly 22 drives lifting seat board 23 to decline together with component thereon, completes an analytical cycle.

The limit of sports record position for going up and down driving assembly 22 and clamping driving assembly 24 can be true by way of limit switch It is fixed, and since the structure size of present apparatus turntable 11 and sampling component 2 all already determines, so, it can also be by accurately controlling Lifting driving assembly 22 carries out extreme position positioning with the operation stroke for clamping driving assembly 24.

As shown in figure 3, lifting driving assembly 22 and clamping driving assembly 24 are the driving of screw rod form；

Going up and down driving assembly 22 includes lifting motor 221, lifting driving 222, elevating screw nut 223 and elevating screw 224, lifting motor 221 is mounted on bottom plate 21 or bracket 3, and the both ends of elevating screw 224 pass through bearing support and vertically-mounted On bottom plate 21 or bracket 3, elevating screw nut 223, elevating screw nut 223 and lifting seat board are screwed on elevating screw 224 23 are fixedly connected, and lifting motor 221 drives elevating screw 224 to rotate by lifting driving 222；

Clamping driving assembly 24 includes clamping motor 241, clamping transmission 242, clamping feed screw nut 243 and clamping screw rod 244, clamping motor 241 is mounted on lifting seat board 23, and clamping 244 both ends of screw rod are mounted on lifting seat board 23 by bearing support On, clamping 244 axis of screw rod is parallel with 9 axis of sample cell, clamps and screws two oppositely oriented clamping screw rods on screw rod 244 Nut 243, clamping feed screw nut 243 are fixedly connected with two clamping plates 25 respectively, and clamping motor 241 passes through clamping 242 bands of transmission Dynamic clamping screw rod 244 rotates；

Lifting driving 222 and clamping transmission 242 are toothed belt transmission.

The driving of screw rod form, structure arrangement is upper compact, saves space, and when operation, the rotation of lifting motor 221 passes through liter Drop driving 222 is transmitted on elevating screw 224, and the rotation of elevating screw 224 drives the lifting of elevating screw nut 223, is completed Forms of motion conversion, similarly, clamping screw rod 244 are rotated while being transmitted on two oppositely oriented clamping feed screw nuts 243, Two clamping plates 25 are driven to be opened and closed to clamp the rotational energy of screw rod 244.The transmission of screw pair form also has self-locking function, Can only screw rod rotation drive feed screw nut mobile, cannot reversed play.Toothed belt transmission loosens after long-time use in order to prevent Or mounting distance is adjusted when installation, one group of tensioning wheel can be added and be tensioned.

Lifting motor 221 and clamping motor 241 are the stepper motor with turbine and worm retarder.224 He of elevating screw Clamping screw rod 244 does not need very big revolving speed, needs decelerating through motor, and the stepper motor with turbine and worm retarder is not only The convenient accurate control of movement travel, also increases by one of latching point at motor, prevents lifting seat board 23 and clamping plate 25 from stopping in motor Appearance position deviates after only running.

As shown in figure 3, clamping driving assembly 24 further includes guide rod 245,245 both ends of guide rod are connected to lifting seat board 23 On, guide rod 245 passes through clamping plate 25, and sliding sleeve or linear bearing is arranged on the contact surface of guide rod 245 and clamping plate 25；Go up and down silk Stem nut 223 and elevating screw 224, clamping feed screw nut 243 and clamping screw rod 244 are ball wire bar pair.

Guide rod 245 makes the translation of clamping plate 25 more steady smooth, and ball wire bar pair is compared to common threaded screw rod Pair also runs more smooth.

As shown in figures 4-6, sample tube assembly 9 includes tube body 91 and the end cap that 91 both ends of tube body are arranged in, and end cap is using slotting Pull out formula disconnecting structure to be sealed: end cap includes that end cap 92, spiral cover 93, pin button 94 and spring 95,91 both ends of tube body are arranged end cap 92, sealing ring is set on the circular contact face of tube body 91 and end cap 92, if end cap 92 is arranged on the axial wall surface of tube body 91 Dry air passing hole 921, end cap 92 are straight-run of pipe away from one end of tube body 91, by pin button 94 and spring 95 in straight tube, outside straight tube Wall is combined with spiral cover 93, stepped hole is arranged in spiral cover 93, stepped hole largest hole is screwed with end cap 92, and spiral cover 93 and end cap 92 screw Thieff hatch 931 is arranged in place's setting sealing ring, stepped hole bottom outwardly, and pin button 94 includes pin rod and the circle for being connected in pin rod one end Platform, pin rod is towards tube body 91 and is inserted into 92 center of end cap, and rotary table deviates from tube body 91, and spring 95 is set on pin rod and is located at rotary table Between end cap 92, sealing ring is set between stepped hole bottom and pin 94 rotary table of button in spiral cover 93, in the reset state of spring 95 Under, pin 94 rotary table of button is located in 93 stepped hole of spiral cover, pin 94 rotary table of button and thieff hatch 931 sealing ring between interior table end face It is compacted；

Sampling head assembly 26 includes that sampling pipe 261, sampling sealing ring 262 and conduit saddle 263, conduit saddle 263 are fixed on clamping plate 25 On, sampling pipe 261 includes column cap 2611, and sampling pipe 261 is inserted into conduit saddle 263, column cap 2611 towards sample cell 9, on column cap 2611 The gas port 2612 for extending to center from surface is offered, sampling sealing ring 262 is also arranged on column cap 2611, column cap 2611 is straight Diameter is less than 931 diameter of thieff hatch.

The end of sample cell 9 is used to seal using pin button 94, spring 95 and some sealing rings, as shown in fig. 6, sampling When, column cap 2611 is inserted into thieff hatch 931 and 94 rotary table of pin button is pushed to squeeze spring 95, sells in 94 rotary table of button and thieff hatch 931 The sealing ring of side periphery disengages, and the sample gas in tube body 91 is able to connect by air passing hole 921 and around pin button 94 with column cap 2611 Touching, the end that sampling pipe 261 is then reached from the gas port 2612 on 2611 surface of column cap are guided by subsequent pipeline toward analysis Instrument, when sampling, sampling sealing ring 262 abuts against spiral cover 93 and sampling pipe 261 simultaneously, prevents sample gas from thieff hatch 931 and column It lets out at first 2611 gap.

Extraneous column cap 2611 only needs to be inserted into thieff hatch 931 and can guide the sample gas in sample cell 9, grasps It is extracted after work, the connection of plug-in does not damage 9 end seal of sample cell, so that sample cell 9 can be multiple It reuses and does not have to the problem of worrying end part seal decline.

The complete use process of the present apparatus is: operator is manually toward being put into sample cell 9 one by one, turntable electricity on turntable 11 Machine 12 starts, and turntable 11 is rotated an angle, allows sample cell 9 to be analyzed to reach bottom, then lifting motor 221 opens Dynamic, sampling head assembly 26 reaches shuts down with lifting motor 221 when sample cell 9 is concordant on turntable 11, and clamping motor 241 starts, and two A sampling head assembly 26 is close to each other, and column cap 2611 is inserted into thieff hatch 931, and the clamping starting of motor 241 is shut down, lifting motor 221 are again started up, and sampling head assembly 26 declines, and sample cell 9 is come in heating device 27 from taking off in reed 14, heating device 27 Sample cell 9 is heated in starting, and sample gas leads to subsequent analyzer from 261 end separating device of sampling pipe, after analysis, closes Heating device 27 is closed, lifting motor 221 is started, allows sample cell 9 to rise and returns on turntable 11, lifting motor 221 is shut down, clamping The starting of motor 241 allows sampling head assembly 26 to unclamp sample cell 9, and then lifting motor 221 drives sampling head assembly 26 to decline, and completes Analytical cycle.While analysis, operator can be replaced on turntable 11 except the sample cell in the other positions of bottom 9。

It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.

Claims (7)

1. a kind of multidigit automatic sampling apparatus, it is characterised in that: the automatic sampling apparatus includes sample disc component (1), sampling Component (2), bracket (3) and sample cell (9), the sample disc component (1) and sampling component (2) are mounted on bracket (3), described The rotary shaft of sample disc component (1) is horizontal direction, and several sample cells (9) are parallel with rotary axis direction, are evenly placed upon sample On the inside and outside circle of circumference of product disk component (1), the sample disc component (1) drives sample cell (9) when rotating around its own axis It is displaced along sample disc circumferencial direction, the sampling component (2) is located at the lower section of sample disc component (1), and sampling component (2) is with perpendicular It goes straight up to drop driving and is driven along the folding of sample cell (9) axis.

2. a kind of multidigit automatic sampling apparatus according to claim 1, it is characterised in that: sample disc component (1) packet It includes turntable (11), rotary tray motor (12), turntable driving (13) and reed (14), the shaft of the turntable (11) and passes through bearing support It is mounted on bracket (3), rotary tray motor (12) is also mounted on bracket (3), and the shaft of rotary tray motor (12) and turntable (11) is logical Turntable driving (13) transmission connection is crossed, the circumference of the turntable (11) is equipped with several reeds (14), and reed (14) clamps sample Quality control (9).

3. a kind of multidigit automatic sampling apparatus according to claim 1, it is characterised in that: the sampling component (2) includes Bottom plate (21), lifting driving assembly (22), lifting seat board (23), clamping driving assembly (24), clamping plate (25), sampling head assembly (26) it is mounted on bracket (3) with heating device (27), the bottom plate (21) using fastener, the lifting driving assembly (22) Connecting bottom board (21) and lifting seat board (23), lifting driving assembly (22) driving lifting seat board (23) are gone up and down, the clamping Driving assembly (24) connection lifting seat board (23) and clamping plate (25), clamping driving assembly (24) driving clamping plate (25) is along sample cell (9) axis is moved, and installation sampling head assembly (26), the sampling head assembly (26) are located at sample cell (9) on clamping plate (25) It is located at sample cell (9) two sides on axis direction, the heating device (27) is mounted on bottom plate (21), and heating device (27) is located at The underface of two sampling head assembly (26) lines.

4. a kind of multidigit automatic sampling apparatus according to claim 3, it is characterised in that: the lifting driving assembly (22) It is the transmission of screw rod form with clamping driving assembly (24),

The lifting driving assembly (22) includes lifting motor (221), lifting driving (222), elevating screw nut (223) and rises It drops screw rod (224), the lifting motor (221) is mounted on bottom plate (21) or bracket (3), and the both ends of elevating screw (224) are logical It crosses bearing support and is vertically installed on bottom plate (21) or bracket (3), elevating screw screws elevating screw nut on (224) (223), elevating screw nut (223) is fixedly connected with lifting seat board (23), and the lifting motor (221) passes through lifting driving (222) elevating screw (224) rotation is driven；

The clamping driving assembly (24) includes clamping motor (241), clamping transmission (242), clamping feed screw nut (243) and presss from both sides It holds screw rod (244), the clamping motor (241) is mounted in lifting seat board (23), and clamping screw rod (244) both ends pass through axis It holds support to be mounted in lifting seat board (23), clamping screw rod (244) axis is parallel with sample cell (9) axis, clamps screw rod (244) screw two oppositely oriented clamping feed screw nuts (243) on, clamping feed screw nut (243) respectively with two clamping plates (25) it is fixedly connected, the clamping motor (241) drives clamping screw rod (244) rotation by clamping transmission (242)；

The lifting driving (222) and clamping transmission (242) are gear drive or toothed belt transmission.

5. a kind of multidigit automatic sampling apparatus according to claim 4, it is characterised in that: the lifting motor (221) and Clamping motor (241) is the motor with turbine and worm retarder.

6. a kind of multidigit automatic sampling apparatus according to claim 4, it is characterised in that: the clamping driving assembly (24) It further include guide rod (245), guide rod (245) both ends are connected in lifting seat board (23), and guide rod (245) passes through clamping plate (25), sliding sleeve or linear bearing are set on the contact surface of guide rod (245) and clamping plate (25)；The elevating screw nut (223) and elevating screw (224), clamping feed screw nut (243) and clamping screw rod (244) are ball wire bar pair.

7. a kind of multidigit automatic sampling apparatus according to claim 3, it is characterised in that: sample tube assembly (9) packet Tube body (91) and setting are included in the end cap at tube body (91) both ends, end cap is sealed using plug-in disconnecting structure: end cap includes End cap (92), spiral cover (93), pin button (94) and spring (95), tube body (91) both ends be arranged end cap (92), tube body (91) and Sealing ring is set on the circular contact face of end cap (92), and several gas excessively are arranged in end cap (92) on the axial wall surface of tube body (91) Hole (921), end cap (92) are straight-run of pipe away from the one end of tube body (91), pass through pin button (94) and spring (95) in straight tube, directly Pipe outer wall is combined with spiral cover (93), and stepped hole is arranged in the spiral cover (93), and stepped hole largest hole is screwed with end cap (92), spiral cover (93) and sealing ring is arranged in end cap (92) place of screwing, and stepped hole bottom is arranged thieff hatch (931) outwardly, and the pin button (94) includes Pin rod and the rotary table for being connected in pin rod one end, pin rod is towards tube body (91) and is inserted into end cap (92) center, and rotary table deviates from tube body (91), the spring (95) is set on pin rod and between rotary table and end cap (92), the interior stepped hole bottom of spiral cover (93) Sealing ring is set between portion and pin button (94) rotary table, under the reset state of spring (95), pin button (94) rotary table is located at spiral cover (93) in stepped hole, sell button (94) rotary table and thieff hatch (931) sealing ring between interior table end face be compacted；

The sampling head assembly (26) includes sampling pipe (261), sampling sealing ring (262) and conduit saddle (263), the conduit saddle (263) be fixed on clamping plate (25), the sampling pipe (261) includes column cap (2611), sampling pipe (261) be inserted into conduit saddle (263), Column cap (2611) offers the gas port (2612) that center is extended to from surface, column cap on column cap (2611) towards sample cell (9) (2611) sampling sealing ring (262) is also arranged on, column cap (2611) diameter is less than thieff hatch (931) diameter.