CN209069650U - A kind of pumping equipment of fluid sampling device - Google Patents

Abstract

The utility model relates to a kind of pumping equipments of fluid sampling device, including sample bottle and sample needle, it further include the horizontally movable waste liquid tank in top that sample bottle is set, the waste liquid tank contains receiving and shifts the cavity of waste liquid, there is the waste liquid hole entered for sample needle above the cavity, the side of the cavity is equipped with the sample well passed through for sample needle；The waste liquid tank is equipped with the leakage fluid dram that waste liquid in cavity is discharged；The V-arrangement microflute of removal needle oral fluid drop is provided in the cavity immediately below the waste liquid hole, the V-arrangement microflute takes shape on the boss higher than cavity floor.The utility model provides the waste liquid slot structure for improving drain efficiency, can be switched fast between removal waste fluid and row's sample liquid, reduce the move distance and length of pipe of needle, sample volume needed for reducing flushing pipeline, drain time is saved, is improved efficiency, and then improves the accuracy of sampling.

Description

A kind of pumping equipment of fluid sampling device

Technical field

The utility model relates to a kind of fluid sampling device, especially a kind of pumping equipment of fluid sampling device.

Background technique

It is carried out in analysis experiment to drug ingredient, includes dissolution sampling process, the device of the dissolution test of drug, cup Interior liquid is suspension.It is required according to dissolution test, needs to be taken out appropriate solution for detecting at set time point, and It is calculated since sampling time point, the sampling of sample must be completed in 30 seconds.In sampling process, generally with leading portion discharge liquid to row Liquid pipeline is cleaned, and the liquid of detergent line is discharged as waste liquid, and waste fluid container and sample bottle usually exist in the prior art The process switching of one plane, removal waste fluid and stock layout product is generally by mobile example needle to waste fluid container top, drained waste liquid Sample needle is moved to above sample bottle again afterwards and is sampled, or is realized by mobile waste fluid container and sample bottle stand, Since waste fluid container and sample bottle are in a plane, distance is longer between waste fluid container and sample bottle, whole process switching compared with Slowly, it takes a long time.

In the prior art, generally there are three types of schemes for sample pin position when drain.(1) sample needle is close to sample bottle bottom.It should Under scheme, as discharge amount of liquid increases, the length of sample needle submergence in a liquid is bigger, causes sample needle outer wall to remain, shadow The concentration of other samples is rung, part residual is also possible to save bit by bit on the component contacted with needle, it is difficult to clean, and then pollute other samples Product.(2) the sample crown is located at a fixed position according to total lifting rate, so that final sample solution did not had sample needle mouth just. Under the program, in discharge opeing process, sample solution has part that can splash in bottle wall, if desired injects quantitative dilution pair inward It is diluted, this will affect the concentration after sample dilution.(3) sample needle is located at sample bottle mouth position, is always positioned at ullage. Under the program, in addition to haveing the defects that the 2nd kind of scheme, there is also needle mouth hang drop the phenomenon that, that is to say, last 1 drop of liquid may Can not drain into sample bottle leads to sampling amount there are error, while the drop may drop to other sample bottle during the motion It is interior, or remain on the component contacted with needle.

Utility model content

In view of the above defects of the prior art, the purpose of the utility model is to provide a kind of fluid sampling devices Pumping equipment can make sampler removal waste fluid and the switch speed of row's sample liquid fast using the pumping equipment, and the sampling used time is short Feature, discharge opeing process sample needle noresidue, can be improved sampling precision.

In order to achieve the above objectives, the invention adopts the following technical scheme:

A kind of pumping equipment of fluid sampling device, including sample bottle and sample needle further include sample bottle is arranged in upper The horizontally movable waste liquid tank in side, the waste liquid tank contain receiving and shift the cavity of waste liquid, have confession above the cavity The waste liquid hole that sample needle enters, the side of the cavity are equipped with the sample well passed through for sample needle；The waste liquid tank is equipped with will The leakage fluid dram that waste liquid is discharged in cavity.

It is further: the V-arrangement microflute of removal needle oral fluid drop is provided in the cavity immediately below the waste liquid hole, it is described V-arrangement microflute take shape on the boss higher than cavity floor.

Further: the leakage fluid dram connected drainage pipe, setting negative pressure device is to accelerate to give up in cavity on drain pipe The velocity of discharge of liquid.

It is further: the waste liquid tank with a thickness of 8-20mm.

Further: the waste liquid hole and the aperture of sample well are slightly larger than sample needle.

Further: the pumping equipment further includes positioning device, and the positioning device includes fixed and horizontal Horizontal sliding table, fixation and the lifting sliding table for vertically moving sample needle of mobile waste liquid tank.

Further: pumping equipment described in the utility model further includes controller, and controller controls the positioning device Waste liquid tank or sample needle are moved to correct position.

The utility model has the advantages that

The utility model provides the waste liquid slot structure for improving drain efficiency, can be fast between removal waste fluid and row's sample liquid Speed switching, reduces the move distance and length of pipe of needle, and sample volume needed for reducing flushing pipeline saves drain time, improves Efficiency, and then improve the accuracy of sampling.Waste liquid tank is placed in above sample bottle bottleneck, and waste liquid tank can also play the role of positioning baffle Fixed sample bottle, sample bottle is lifted by sample needle when anti-stop-band bottle cap.In discharge opeing process, sample needle is controlled by controller and is risen The drain age velocity of speed and syringe pump keeps certain ratio, and then realizes that sample needle follows liquid level to rise, and keeps sample needle needle Mouth 2mm or so under liquid level, avoids sample needle outer wall liquid from remaining.

Detailed description of the invention

Fig. 1 is the waste liquid tank and needle-shaped one schematic diagram of state of sample of the utility model pumping equipment；

Fig. 2 is the waste liquid tank and needle-shaped two schematic diagram of state of sample of the utility model pumping equipment；

Fig. 3 is the waste liquid tank and needle-shaped three schematic diagram of state of sample of the utility model pumping equipment；

Fig. 4 is the waste liquid tank and needle-shaped four schematic diagram of state of sample of the utility model pumping equipment；

Fig. 5 is the waste liquid tank and needle-shaped five schematic diagram of state of sample of the utility model pumping equipment；

Specific embodiment:

1-5 is to a kind of more excellent implementation of the pumping equipment of fluid sampling device described in the utility model with reference to the accompanying drawing Mode is described in detail.

As shown in Figure 1, a kind of pumping equipment of fluid sampling device, including sample bottle 23 and sample needle 21, sampler Liquid, which will be sampled, by sample needle is discharged to sample bottle to carry out subsequent analysis.The pumping equipment further includes being arranged in sample bottle The horizontally movable waste liquid tank 22 in top, the waste liquid tank 22 containing accommodate and transfer waste liquid cavity, the cavity There is the waste liquid hole 24 entered for sample needle in top, and the side of the cavity is equipped with the sample well 25 passed through for sample needle；It is described useless The aperture of fluid apertures 24 and sample well 25 is slightly larger than sample needle, in order to not touch waste liquid tank 22 when the entrance of sample needle 21.It is described Waste liquid tank 22 be equipped with by cavity waste liquid be discharged leakage fluid dram 26, leakage fluid dram connected drainage pipe (not shown), drain pipe For the upper negative pressure device that is arranged to accelerate the velocity of discharge of waste liquid in groove, negative pressure device is generally suction pump.In the waste liquid hole 24 The V-arrangement microflute 27 of removal needle oral fluid drop is provided in the cavity of underface, when removal waste fluid, it is micro- that the needle mouth of sample needle 21 is located at V-arrangement In slot 27, when lifting sample needle 21 after the completion of drain, V-arrangement microflute 27 avoids that the remaining drop of 21 needle mouth of sample needle can be inhaled It is attached, it avoids needle mouth residual drop from entering sample bottle, improves sampling precision.The V-arrangement microflute 27 takes shape in higher than cavity floor Boss on, which should have certain height, diffuse in contaminated samples needle 21 in V-arrangement microflute 27 to avoid waste liquid liquid level Needle mouth.The flat rectangular shape that the waste liquid tank 22 is generally with a thickness of 8-20mm, the thickness of waste liquid tank 22 is bigger, sample Product needle must be longer, and the distance that sample needle is walked when passing through waste liquid tank is longer, requires more the verticality of sample needle 21 Height, so the height of waste liquid tank 22 should be low to the greatest extent；But too low height makes the cavity for accommodating waste liquid become smaller, and has little time discharge Waste liquid may diffuse in V-arrangement microflute 27 or even can overflow from waste liquid hole 24, so the height and cavity size of waste liquid tank are according to need It designs.

The pumping equipment further includes positioning device (not shown), and the positioning device includes fixed and horizontal Horizontal sliding table, fixation and the lifting sliding table for vertically moving sample needle of mobile waste liquid tank.Lifting sliding table can be used existing liquid and take The lifting sliding table of sampling device sample needle, horizontal sliding table can refer to existing sampler sample bottle mobile device, and to be arranged to short distance past Multiple movement mechanism, positioning device are connect with controller, and controller controls the positioning device and is moved to waste liquid tank or sample needle Correct position.To those skilled in the art, positioning device, controller belong to routine techniques, therefore the application is no longer It is described specifically.

The course of work:

For original state as shown in Figure 1, sample needle 21 is located at 24 top of waste liquid hole of waste liquid tank 22, waste liquid tank 22 is located at sample The top bottle mouth position of bottle 23, sample needle 21 are located substantially at the position of center line of sample bottle 23.When sampler enters drain program When, controller control lifting sliding table is slightly about to down sample needle 21 and is sent into the cavity of waste liquid tank 22, and the needle mouth of sample needle 21 is made Close to V-arrangement microflute 27, as shown in Fig. 2, then starting removal waste fluid program, with the discharge of waste liquid, waste liquid enters in waste liquid tank 22 Cavity starts the negative pressure device connected on leakage fluid dram pipeline and extracts waste liquid out.

After the completion of discharging of waste liquid, controller control lifting sliding table is restored to original state shown in FIG. 1, and controller controls water Somoothing board short-distance movement waste liquid tank 22, make waste liquid tank 22 sample well 25 and sample needle 21 to it in same vertical line position, As shown in Figure 3.

Then, controller starts lifting sliding table downlink, and sample needle 21 is rapidly feeding in sample bottle 23,21 needle of sample needle is made Mouth is sampled close to the bottom of bottle of sample bottle 23 as shown in figure 4, starting discharge sample liquid.In discharge opeing process, pass through controller control Lifting sliding table processed rises sample needle 21, and the drain age velocity of the rate of climb and syringe pump keeps certain ratio, and then realizes sample Product needle 21 follows liquid level to rise, and keeps sample needle needle mouth 2mm or so under liquid level, avoids 21 outer wall liquid of sample needle from remaining, directly The quantity of fluid to needed for being discharged, as shown in Figure 5.

After sampling, controller controls original state shown in lifting sliding table, horizontal sliding table Rapid reset to Fig. 1

The utility model provides the waste liquid slot structure for improving drain efficiency, can be fast between removal waste fluid and row's sample liquid Speed switching, reduces the move distance and length of pipe of needle, and sample volume needed for reducing flushing pipeline saves drain time, improves Efficiency, and then improve the accuracy of sampling.

Claims (7)

1. a kind of pumping equipment of fluid sampling device, including sample bottle and sample needle, it is characterised in that: further include being arranged in sample The horizontally movable waste liquid tank in the top of product bottle, the waste liquid tank contain receiving and shift the cavity of waste liquid, the cavity There is the waste liquid hole entered for sample needle in top, and the side of the cavity is equipped with the sample well passed through for sample needle；The waste liquid Slot is equipped with the leakage fluid dram that waste liquid in cavity is discharged.

2. pumping equipment according to claim 1, it is characterised in that: be provided in the cavity immediately below the waste liquid hole The V-arrangement microflute of needle point drop is removed, the V-arrangement microflute takes shape on the boss higher than cavity floor.

3. pumping equipment according to claim 1 or 2, it is characterised in that: the leakage fluid dram connected drainage pipe, drain pipe It is upper that negative pressure device is set to accelerate the velocity of discharge of waste liquid in cavity.

4. pumping equipment according to claim 1 or 2, it is characterised in that: the waste liquid tank with a thickness of 8-20mm.

5. pumping equipment according to claim 1 or 2, it is characterised in that: the waste liquid hole and the aperture of sample well are slightly larger In sample needle.

6. pumping equipment according to claim 1 or 2, it is characterised in that: the pumping equipment further includes positioning device, The positioning device includes the lifting cunning fixing and moving horizontally the horizontal sliding table of waste liquid tank, fixation and vertically move sample needle Platform.

7. pumping equipment according to claim 6, it is characterised in that: further include controller, controller controls the positioning Waste liquid tank or sample needle are moved to correct position by device.