CN205495613U

CN205495613U - Environmental monitoring sampling is with ration filling ware

Info

Publication number: CN205495613U
Application number: CN201620155526.1U
Authority: CN
Inventors: 曹芹; 殷伟庆
Original assignee: ZHENJIANG ENVIRONMENT MONITORING CENTRAL STATION
Current assignee: ZHENJIANG ENVIRONMENT MONITORING CENTRAL STATION
Priority date: 2016-03-01
Filing date: 2016-03-01
Publication date: 2016-08-24
Anticipated expiration: 2026-03-01

Abstract

The utility model discloses an environmental monitoring sampling is with ration filling ware, including the cylinder that has barrel and piston rod, the front end entrance intercommunication of barrel has the pipette, the intercommunication has the fluid -discharge tube on the barrel, the pipe wall of pipette has annular groove A, the pipe wall of fluid -discharge tube has annular groove B, the pearl A that lives has been placed in the pipette, the pearl B that lives has been placed in the fluid -discharge tube, annular groove A, annular groove B is respectively at the pearl A that lives, live pearl B below to carrying out the bearing separately, pearl A lives, when the pearl B that lives takes a seat, bearing department forms sealed closing face, still be provided with the stop device of the control piston throw of lever on the barrel. The utility model has the advantages that can set up the liquid volume of absorption at will, have the characteristics that the precision is high, owing to do not need to carry out the naked eye constant volume to liquid again, only need use hand no. 1 to press during the operation, one shot operation just can be with in quantitative absorption liquid or the extractant joining target container, the very big degree of difficulty of having saved time and manual operation.

Description

Quantitative filling device is used in environmental monitoring sampling

Technical field

This utility model relates to a kind of sampling tool, the constant volume instrument in a kind of sampling.

Background technology

The projects such as the various gas projects of environmental monitoring spot sampling, such as hydrogen chloride, chlorine, hydrogen sulfide, need to configure one Determining the absorbing liquid of volume, existing way is through graduated cylinder or measuring cup carrys out constant volume absorbing liquid, is inserted into absorption tube after constant volume, This way is extremely time-consuming, especially high-volume prepares sampling tube when, it is often necessary to spend all day to prepare sampling Pipe, brings inconvenience to environmental monitoring.

For this special sampled item of petroleum class and zoology and botany oil, existing way is also by graduated cylinder constant volume extractant four Chlorination carbon, then adds separatory funnel by carbon tetrachloride, and operating process is extremely wasted time and energy.

Utility model content

Utility model purpose: for the problems referred to above, the purpose of this utility model is to provide in a kind of sampling process is easy to constant volume Absorbing liquid, the instrument of extract, easy, measure liquid quickly and accurately.

Technical scheme: quantitative filling device is used in a kind of environmental monitoring sampling, including having the syringe of cylinder and piston rod, cylinder Front end inlet at be communicated with pipette, cylinder is communicated with discharging tube, the tube wall of pipette has annular groove A, row The tube wall of liquid pipe has annular groove B, is placed with pearl A alive in pipette, is placed with pearl B alive in discharging tube, and annular is recessed Groove A, annular groove B respectively at the pearl A that lives, live below pearl B to each carrying out support, when the pearl A that lives, the pearl B that lives take a seat, Form seal closure face at support, cylinder is additionally provided with the stopping means controlling piston rod stroke.

Stopping means upper-lower position on cylinder is adjustable, according to required constant volume, adjusts spacing height, i.e. regulating piston The stroke of bar.

Stopping means includes upper limit and lower limit, and the stroke of piston rod is between upper limit and lower limit.

Stopping means includes upper limit, and the stroke of piston rod is between upper limit and the upper end face of cylinder.

Optimal, annular groove A is arranged on the upper position of pipette, and annular groove B is arranged on the pars intermedia of discharging tube Position.

Optimal, the pearl A that lives, the pearl B that lives are spheroid or spheroid.

Optimal, the outlet section opening of discharging tube is downward, in order to alignment gas sampling tube inlet or separatory funnel, with Time when also can prevent discharge opeing liquid the pressure effect of the pearl B that lives is disengaged it from out discharging tube.

Beneficial effect: compared with prior art, the utility model has the advantages that the liquid volume that can arbitrarily arrange absorption, Have the advantages that precision is high, owing to need not again liquid be carried out naked eyes constant volume, have only to during operation with hands one by a, step Operation just can be greatly saved time and manually-operated by quantitative absorbing liquid or extractant addition target container Difficulty.

Accompanying drawing explanation

Fig. 1 is this utility model external structure schematic diagram；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is this utility model internal structure schematic diagram；

Fig. 4 is the partial enlarged view I in Fig. 3.

Detailed description of the invention

Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with this utility model, it should be understood that these embodiments are only used for Bright this utility model rather than limit scope of the present utility model, after having read this utility model, art technology Personnel all fall within the application claims limited range to the amendment of the various equivalent form of values of the present utility model.

As shown in accompanying drawing 1-4, quantitative filling device is used in a kind of environmental monitoring sampling, including having cylinder 1 and piston rod 2 Syringe, is communicated with pipette 3, the main body of cylinder 1 is communicated with discharging tube 4, pipette at the front end inlet of cylinder 1 3, discharging tube 4 is at the essentially vertical pose as cylinder 1, the tube wall of pipette 3 has annular recessed Groove A5, the tube wall of discharging tube 4 has annular groove B6, is placed with pearl A7 alive, puts in discharging tube 4 in pipette 3 Be equipped with pearl B8 alive, annular groove A5, annular groove B6 respectively at the pearl A7 that lives, live below pearl B8 to each carrying out support, When live pearl A7 be seated at annular groove A5, live pearl B8 be seated at annular groove B6 time, at support formed seal closure face, The stopping means 9 controlling piston rod 2 stroke it is additionally provided with on cylinder 1.

Using method of the present utility model and operation principle be:

1, regulation limiting device upper-lower position on cylinder, the stroke making piston rod is consistent with amount of liquid to be drawn, Can be determined by the scale on cylinder or stopping means；Stopping means can include upper limit and lower limit, then piston rod Stroke between upper limit and lower limit；Stopping means can also only include upper limit, then the stroke of piston rod is in the upper limit Between position and the upper end face of cylinder；

2, inserting in vessel liquid by pipette, in holding container, liquid level is above annular groove A, and tension and compression are several times repeatedly Piston rod, makes the air in cylinder content cavity drain；

Step 1,2 can exchange；

3, liquid level in container is kept above annular groove A, to suck air when preventing from pulling piston rod and cause liquid to be inhaled Enter amount different from the suction volume of predetermined stroke, then by regulation stroke pull piston rod, now, liquid to live pearl A to Upper effect, opens the seal closure face of pearl A alive and annular groove A, and liquid is drawn upward in cylinder cavity volume, due to cylinder Negative pressure and Gravitative Loads certain for pearl B of living in body cavity volume, the pearl B that lives keeps being seated at annular groove B formation and seals, liquid It is stored in cylinder cavity volume；

4, by the stroke pressure piston rod of regulation, the pearl A that lives is seated at annular by the pressure effect of liquid in cylinder cavity volume Groove A forms sealing, and in cylinder cavity volume, liquid enters discharging tube simultaneously, and to living, pearl B upwards acts on, open pearl B alive with The seal closure face of annular groove B, liquid flows out from discharging tube outlet.

Above procedure, owing to defining the most spacing of piston rod, pulls the most every time, presses piston rod, sucks and discharges Amount of liquid is all consistent, is therefore not necessarily and to draw when being zero by liquid in cylinder cavity volume, is also not necessarily every time Piston rod is pressed into the end, the liquid in cylinder cavity volume is drained.

In above procedure, during discharge opeing, it is not necessary to whole charging point is shifted, only need to be by the leakage fluid dram of discharging tube and gas sampling Tube inlet or separatory funnel are directed at, and the outlet section of discharging tube is designed as opening downward, therefore can continuously, instead Operate charging point again, draw a pressure to get to the purpose of quantitative liquid getting by one, same container can prevent multiple this utility model, Multiple samples can be carried out quantitative filling operation.

In this utility model structure, the pearl A that lives, the pearl B that lives are preferably spheroid or spheroid, during to ensure that they take a seat and ring Connected in star can form reliable seal closure face.

Annular groove A is preferably disposed on the upper position of pipette, reduces annular groove A to the distance at cartridge inlet, It is easy to quantitatively；Annular groove B is preferably disposed on the middle part of discharging tube, makes pearl B alive have certain upper shifting distance, anti- Only during discharge opeing, liquid disengages it from out discharging tube to the pressure effect of the pearl B that lives.

Claims

1. quantitative filling device is used in an environmental monitoring sampling, it is characterised in that: include that there is cylinder (1) and piston rod (2) Syringe, be communicated with pipette (3) at the front end inlet of cylinder (1), cylinder (1) be communicated with discharging tube (4), The tube wall of pipette (3) has annular groove A (5), and the tube wall of discharging tube (4) has annular groove B (6), inhales It is placed with pearl A (7) alive in liquid pipe (3), in discharging tube (4), is placed with pearl B (8) alive, annular groove A (5), Annular groove B (6) respectively live pearl A (7), live pearl B (8) lower section to each carrying out support, live pearl A (7), live When pearl B (8) takes a seat, form seal closure face at support, cylinder (1) is additionally provided with control piston rod (2) OK The stopping means (9) of journey.

Environmental monitoring sampling quantitative filling device the most according to claim 1, it is characterised in that: stopping means (9) Upper-lower position on cylinder (1) is adjustable.

Environmental monitoring sampling quantitative filling device the most according to claim 1, it is characterised in that: stopping means (9) Including upper limit and lower limit, the stroke of piston rod (2) is between upper limit and lower limit.

Environmental monitoring sampling quantitative filling device the most according to claim 1, it is characterised in that: stopping means (9) Including upper limit, the stroke of piston rod (2) is between the upper end face of upper limit and cylinder (1).

Environmental monitoring sampling quantitative filling device the most according to claim 1, it is characterised in that: annular groove A (5) being arranged on the upper position of pipette (3), annular groove B (6) is arranged on the middle part of discharging tube (4).

Environmental monitoring sampling quantitative filling device the most according to claim 1, it is characterised in that: the pearl A (7) that lives, The pearl B (8) that lives is spheroid or spheroid.

Environmental monitoring sampling quantitative filling device the most according to claim 1, it is characterised in that: discharging tube (4) Outlet section opening downward.