CN210427607U

CN210427607U - Liquid sampling device

Info

Publication number: CN210427607U
Application number: CN201921014858.8U
Authority: CN
Inventors: 范文正; 范稳新; 王雪华
Original assignee: Ningbo Huance Experimental Equipment Co ltd
Current assignee: Ningbo Huance Experimental Equipment Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-28
Anticipated expiration: 2029-07-02

Abstract

The utility model relates to a liquid sampling device, which comprises a mounting bracket, an automatic sampler arranged on the mounting bracket and at least one sampler, wherein the automatic sampler can automatically transfer a liquid sample into the sampler; the sampler comprises a sampler main body, wherein the top of the sampler main body is provided with an inlet matched with the automatic sampler, the side of the sampler main body is provided with an outlet matched with the adsorption tube, and the inlet and the outlet are communicated through a connecting passage in the sampler main body; the bottom of sampler main part is provided with the interface that admits air, just the gaseous gas that is gone into by the interface that admits air in the sampler main part can promote the interior liquid sample of connecting passageway is outwards discharged from the export. The utility model realizes automatic sampling of samples, not only improves sampling efficiency, but also ensures sampling precision; meanwhile, the effective liquid inlet space on the sampler is large, the blowing effect is good, and the adsorption tube and the sampler are convenient to connect.

Description

Liquid sampling device

Technical Field

The utility model belongs to the technical field of the liquid sample is relevant, especially, relate to a liquid sampling device.

Background

At present, the existing liquid sampling method mostly adopts a manual sampling method, so that the liquid sampling process is complicated, the efficiency is low, the sampling precision is totally dependent on the operation technique and experience of a sampling person, larger errors exist, and the use requirements of people can not be well met.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a liquid sampling device to solve the technical problems in the prior art.

The liquid sampling device comprises a mounting bracket, an automatic sampler arranged on the mounting bracket and at least one sampler, wherein the automatic sampler can automatically transfer a liquid sample into the sampler; the sampler comprises a sampler main body, wherein the top of the sampler main body is provided with an inlet matched with the automatic sampler, the side of the sampler main body is provided with an outlet matched with the adsorption tube, and the inlet and the outlet are communicated through a connecting passage in the sampler main body; the bottom of sampler main part is provided with the interface that admits air, just the gaseous gas that is gone into by the interface that admits air in the sampler main part can promote the interior liquid sample of connecting passageway is outwards discharged from the export.

As the utility model discloses an optimized scheme, the gas circuit has been seted up in the sampler main part, the gas circuit respectively with the interface that admits air with the connecting channel intercommunication.

As the preferred scheme of the utility model, the sampler main part is in the position department of import is provided with the shock insulator, the gas circuit with the branch's route that the connecting channel is connected is close to the shock insulator sets up.

As a preferable aspect of the present invention, the branch passage and the connection port connected to the connection passage are provided toward the spacer.

As the utility model discloses a preferred scheme, the shock insulator passes through lock nut spacing to be fixed in on the sampler main part.

As the preferred scheme of the utility model, the interface that admits air of sampler main part is connected with the air cock with the screw thread mode.

As the utility model discloses a preferred scheme, the quantity of sampler is a plurality of, the movably setting of auto-sampler is in on the installing support, just auto-sampler can respectively with every the sampler cooperation.

As the utility model discloses a preferred scheme, it is a plurality of the sampler is arranged in proper order on the installing support, the auto-sampler passes through ball and the movably setting of screw nut is in on the installing support.

As a preferred scheme of the utility model, the automatic sample injector comprises a sample bottle turntable mechanism, a sample injection needle, a positioner matched with the sample injection needle and a driving mechanism; the driving mechanism can drive the sample injection needle and the positioner to do reciprocating motion relative to the sample bottle turntable mechanism.

As the preferred scheme of the utility model, the sample bottle turntable mechanism comprises a turntable and a driving piece for driving the turntable to rotate; wherein a gap is arranged on the turntable, and the driving mechanism can drive the sampling needle and the positioner to move downwards through the gap of the turntable and be matched with the sampler.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the liquid sampling device provided by the utility model realizes automatic sampling of the liquid sampling device through reasonable structural arrangement, not only improves sampling efficiency, but also ensures sampling precision; simultaneously, the interface setting that admits air that is used for admitting air on this sampler is in the bottom of sampler main part to this has played the effect of dodging, makes effective feed liquor space on this sampler big, and by the leading-in gas of interface of admitting air effectual to the gas blowing of liquid sample in the connecting channel, makes things convenient for being connected between adsorption tube and the sampler in addition, does not confine the length of adsorption tube, the further sampling of this liquid sampling device of being convenient for.

Drawings

Fig. 1 is a schematic structural view of a liquid sampling device according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of an autosampler in the liquid sampling apparatus of fig. 1.

Fig. 3 is a cross-sectional view of a sampler in the liquid sampling device of fig. 1.

10, mounting a bracket; 20. an autosampler; 21. a sample bottle turntable mechanism; 22. a sample injection needle; 24. A drive mechanism; 30. a sampler; 31. a sampler main body; 33. a spacer; 34. locking the nut; 341. a through hole; 301. an inlet; 302. an outlet; 303. an air inlet interface; 304. a connecting port; 311. a connection path; 312. a gas circuit; 313. a branch passage; 40. a control mechanism; 101. and (5) sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a liquid sampling apparatus according to an embodiment of the present invention includes a mounting frame 10, an auto sampler 20 disposed on the mounting frame 10, and at least one sampler 30.

The mounting bracket 10 is a main frame of the liquid sampling apparatus, and supports the auto-sampler 20 and the sampler 30 provided thereon. In this embodiment, the mounting bracket 10 is further provided with a control mechanism 40, wherein the control mechanism 40 includes a touch display screen, so that when a person uses the liquid sampling device to sample liquid, a signal can be input from the touch display screen.

The autosampler 20 is used to automatically transfer a liquid sample into the sampler 30, and specifically, may take a liquid sample out of a vial and transfer the liquid sample into the sampler 30.

Referring to fig. 2, the automatic sampler 20 includes a sample bottle turntable mechanism 21, a sample injection needle 22, a positioner (not shown) cooperating with the sample injection needle 22, and a driving mechanism 24.

The sample bottle turntable mechanism 21 comprises a turntable (not shown) and a driving part (not shown) for driving the turntable to rotate, and a servo motor can be used specifically, a plurality of cavities for accommodating sample bottles are arranged in the circumferential direction of the turntable, the rotating part of the driving part is fixedly connected with the turntable, so that the sample bottles of liquid samples to be taken can be correspondingly placed in the cavities of the turntable by people, then the turntable is driven by the driving part to rotate, and the sample bottles of the liquid samples to be taken can be moved to be under the sample injection needles 22 so as to be used for extracting the liquid samples from the corresponding sample bottles by the sample injection needles 22.

In this embodiment, the plurality of cavities are uniformly arranged on the turntable, that is, the position of each cavity on the turntable of this embodiment is determined.

The sample bottle turntable mechanism 21 is further provided with a position sensor for performing signal feedback on the initial position of the turntable, and a photoelectric switch can be specifically used, so that when the sample bottle turntable mechanism 21 works, the position of each containing cavity on the turntable can be marked by a signal, a sample bottle to be sampled is placed in one of the containing cavities on the turntable, a position signal corresponding to the containing cavity can be input through the touch display screen, then the turntable is driven by a driving part for signal feedback of the position sensor to recover to the initial position, and then the input position signal is used for controlling the driving part to drive the turntable to rotate a corresponding angle, so that the sample bottle placed on the turntable on the sample bottle turntable mechanism 21 can accurately move to the position right below the sampling needle 22.

In this embodiment, the driving mechanism 24 can drive the sample injection needle 22 and the positioner to reciprocate relative to the vial carousel 21. So that when the automatic sampler 20 is in operation, the driving mechanism 24 can drive the sampling needle 22 to extract the liquid sample from the sample bottle on the sample bottle turntable mechanism 21, and then transfer the extracted liquid sample to the sampler 30.

In this embodiment, the sample bottle turntable mechanism 21 has a notch (not shown) on the turntable, and the driving mechanism 24 can drive the sample injection needle 22 and the positioner to move downward through the notch of the turntable and cooperate with the sampler 30.

The sampling needle 22 is used for quantitatively extracting a liquid sample from the sample bottle and transferring the extracted liquid sample to the sampler 30, wherein the sampling needle 22 is a sampling needle capable of quantitatively extracting liquid in the prior art, so as to quantitatively sample the liquid sampling device.

When the automatic sample injector 20 of this embodiment is in operation, the driving mechanism 24 drives the sampling needle 22 to extract a liquid sample from the sample bottle turntable mechanism 21, the driving mechanism 24 drives the sampling needle 22 and the positioner to move downward simultaneously until the positioner abuts against the sample bottle and stops, and then the driving mechanism drives the sampling needle 22 to be inserted into the sample bottle for sampling, during this process, the positioner plays a role in signal feedback, and specifically, a position sensor may be provided to cooperate with the positioner for use, so that when the positioner abuts against the sample bottle, the position sensor detects a signal and feeds the signal back to the driving mechanism 24, so that the sampling needle 22 moves downward independently and is inserted into the sample bottle to quantitatively extract the liquid sample in the sample bottle; and the driving mechanism 24 drives the sample injection needle 22 to discharge the extracted liquid sample to the sampler 30, the same principle as that of the sample injection needle 22 extracting the liquid sample from the sample bottle turntable mechanism 21 will not be explained herein.

As can be seen from the above, the driving mechanism 24 of the present embodiment can drive the needle 22 and the doser to reciprocate up and down at the same time, and can also drive the needle 22 to reciprocate up and down independently when operating. Therefore, the driving mechanism 24 of the present embodiment specifically includes two sets of driving components, and the driving component for individually driving the sample injection needle 22 to reciprocate up and down is specifically disposed on the moving portion of the other set of driving components. It should be noted that each set of driving components may specifically include a driving motor, a gear, and a rack engaged with the gear, where the gear may be directly disposed on a rotating shaft portion of the driving motor, or connected through a synchronous belt, which will not be described herein.

The sampler 30 is used for transferring the liquid sample introduced by the auto-sampler 20 to the adsorption tube (not shown), so as to sample the liquid sample during the operation of the liquid sampling device, i.e. quantitatively transfer the liquid sample in the sample bottle to the adsorption tube.

Referring to fig. 3, the sampler 30 includes a sampler main body 31, an inlet 301 for matching with the autosampler 20 is disposed on the top of the sampler main body 31, an outlet 302 for matching with the adsorption tube is disposed on the side of the sampler main body, and an air inlet 303 for air intake is disposed on the bottom of the sampler main body, wherein the inlet 301 and the outlet 302 are communicated through a connecting passage 311 in the sampler main body 31. In this embodiment, the gas introduced from the gas inlet 303 into the sampler body 31 can push the liquid sample in the connection passage 311 to be discharged from the outlet 302, so that the liquid sample is transferred from the sampler 20 to the adsorption tube communicating with the outlet 302 of the sampler body 31.

In this embodiment, an air nozzle (not shown) is connected to the air inlet 303 at the bottom of the sampler body 31, preferably, the air nozzle is connected in a threaded manner; when the sampler 30 is operated, the liquid sample introduced by the automatic sampler 20 can be transferred into the adsorption tube by the blowing action of the air nozzle. It should be noted that the adsorption tube is a test tube with openings at two ends, which is conventional in the prior art, wherein the adsorption tube is filled with an adsorbent, when a gas with a liquid sample passes through the adsorption tube, the adsorbent in the adsorption tube can adsorb the liquid sample, and the gas is discharged from the opening at the other end of the adsorption tube.

The interface 303 that admits air that is used for admitting air on sampler 30 of this embodiment sets up the bottom at sampler main part 31, when making this sampler 30 be connected with the air cock, separately be connected with sampler 30 with air cock and adsorption tube, with this effect of dodging has been played, make effective feed liquor space on this sampler 30 big, the gaseous effectual of blowing to the interior liquid sample of connecting passage 311 by the leading-in gas of interface 303 that admits air, and make things convenient for being connected between adsorption tube and the sampler 30, do not confine to the length of adsorption tube. Specifically, the adsorption tube may be directly inserted into the outlet 302 of the sampler body 31 to connect and communicate the adsorption tube with the sampler body 31, and the sampler body 31 may be assembled and sealed with the adsorption tube by inserting the adsorption tube into the adsorption tube and attaching and detaching the adsorption tube to and from the sampler 30, wherein the sealing ring 101 is fitted to a portion of the sampler body 31 connected to the adsorption tube.

The sampler main body 31 is provided with an air path 312, the air path 312 is communicated with the connection path 311, and the air tap blows air into the connection path 311 through the air path 312, so that the liquid sample in the connection path 311 of the sampler main body 31 is pushed by the air and is discharged from the outlet 302 of the sampler main body 31.

It can be understood that the sampler main body 31 is provided with a spacer 33 at the position of the inlet 301 for blocking the inlet 301 of the sampler main body 31, and the present embodiment uses a locking nut 34 to limit and fix the spacer 33 on the sampler main body 31. When the needle 22 is engaged with the sampler 30, the needle 22 can penetrate through the lock nut 34 and the spacer 33, and then be inserted into the connection passage 311 of the sampler body 31. Therefore, the lock nut of the present embodiment is provided with a through hole 341, and the sample injection needle 22 can be inserted into the spacer 33 through the through hole 341 and enter the connection passage 311 of the sampler main body 31.

In the present embodiment, the branch passage 313 of the air passage 312 connected to the connection passage 311 is disposed adjacent to the spacer 33, that is, the connection port 304 of the sampler 30 of the present embodiment for blowing air into the connection passage 311 may be disposed at a sufficient height, so as to improve the blowing effect of the air nozzle, thereby ensuring that the liquid sample in the connection passage 311 of the sampler body 31 can be promptly, quickly and completely introduced into the adsorption tube from the outlet 302 of the sampler body 31.

Further, a connection port 304, which is connected to the branch passage 313 and the connection passage 311, is provided toward the spacer 33. When the sampler 30 is in operation, the gas introduced into the gas path 312 from the gas nozzle is ejected toward the spacer 33 and flows back to the connection path 311 under the blockage of the spacer 33, so that the sampler 30 of the present embodiment can perform a cleaning function on the spacer 33 when in operation.

In the present embodiment, the number of the samplers 30 is plural, and accordingly, the auto-sampler 20 is movably disposed on the mounting frame 10, and the auto-sampler 20 can be respectively engaged with each of the samplers 30.

Specifically, a plurality of the samplers 30 are sequentially arranged on the mounting frame 10, and the auto-sampler 20 is movably disposed on the mounting frame 10 by a ball screw (not shown) and a screw nut (not shown). When the liquid sampling device of the present embodiment is operating, the autosampler 20 can extract the liquid samples in different sample bottles on the sample bottle turntable mechanism 21 according to the use requirement, and transfer the liquid samples to different samplers 30, and transfer the liquid samples to the adsorption tube by the corresponding samplers 30.

It is to be understood that the arrangement of the plurality of samplers 30 on the mounting frame 10 is not limited to the illustrated arrangement, and the movement of the auto-sampler 20 on the mounting frame 10 is not limited to the direct movement of the ball screw engaged with the screw nut, and those skilled in the art can set the driving manner of the auto-sampler 20 on the mounting frame 10 to other forms according to the use requirement, as long as the auto-sampler 20 can be ensured to be engaged with each sampler 30 on the mounting frame 10, and will not be described herein.

To sum up, the utility model provides a liquid sampling device through reasonable structure setting, has realized this liquid sampling device's automatic sampling, when improving sampling efficiency, ensures the precision of sample.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A liquid sampling device, characterized by: the automatic sampler comprises a mounting bracket, an automatic sampler arranged on the mounting bracket and at least one sampler, wherein the automatic sampler can automatically transfer a liquid sample into the sampler; the sampler comprises a sampler main body, wherein the top of the sampler main body is provided with an inlet matched with the automatic sampler, the side of the sampler main body is provided with an outlet matched with the adsorption tube, and the inlet and the outlet are communicated through a connecting passage in the sampler main body; the bottom of sampler main part is provided with the interface that admits air, just the gaseous gas that is gone into by the interface that admits air in the sampler main part can promote the interior liquid sample of connecting passageway is outwards discharged from the export.

2. The liquid sampling device of claim 1, wherein: the sampler main body is provided with a gas circuit which is respectively communicated with the gas inlet interface and the connecting passage.

3. The liquid sampling device of claim 2, wherein: the sampler main body is provided with a spacer at the position of the inlet, and a branch passage of the gas path connected with the connecting passage is arranged adjacent to the spacer.

4. A liquid sampling device according to claim 3, wherein: the connection port of the branch passage connected to the connection passage is provided toward the spacer.

5. The liquid sampling device of claim 4, wherein: the shock insulator is limited and fixed on the sampler main body through a locking nut.

6. The liquid sampling device of claim 1, wherein: the air inlet interface of the sampler main body is connected with an air tap in a threaded manner.

7. The liquid sampling device of claim 1, wherein: the quantity of sampler is a plurality of, the movably setting of auto-sampler is in on the installing support, just the auto-sampler can respectively with every the sampler cooperation.

8. The liquid sampling device of claim 7, wherein: the automatic sampler is arranged on the mounting bracket in sequence, and the automatic sampler is movably arranged on the mounting bracket through a ball screw and a screw nut.

9. The liquid sampling device of claim 1, wherein: the automatic sample injector comprises a sample bottle turntable mechanism, a sample injection needle, a positioner matched with the sample injection needle and a driving mechanism; the driving mechanism can drive the sample injection needle and the positioner to do reciprocating motion relative to the sample bottle turntable mechanism.

10. The liquid sampling device of claim 9, wherein: the sample bottle turntable mechanism comprises a turntable and a driving piece for driving the turntable to rotate; wherein a gap is arranged on the turntable, and the driving mechanism can drive the sampling needle and the positioner to move downwards through the gap of the turntable and be matched with the sampler.