CN2093032U - Automatic moving liquid device - Google Patents

Abstract

The utility model relates to an automatic liquid moving device, which is mainly used for the quantitative liquid separation and charging in the chemical analysis. The utility model is composed of a No. 2 pipe 1, a buffer bottle 2, a liquid containing pipe 3, a liquid-sucking pump 4, a No. 5 pipe 5, a No. 6 pipe 6, a No. 7 pipe 7, a sensitive switch, a glass tee 9, a connecting pipe 10, a No. 4 pipe 11, a No. 1 pipe 12, a No. 3 pipe 13, an air intake valve 14, etc. The utility model is characterized in that the liquid sucking and the zero regulating processes are completed automatically under the action of the glass tee, the sensitive switch, the liquid-sucking pump and an air exhaust valve, and liquid with different volume can be transferred by changing different liquid containing pipes. The utility model has the advantages of simple structure, convenient operation, no influence of the maninduced error factors, high liquid separating precision, etc.

Description

Automatic moving liquid device

A kind of automatic pipetting device belongs to chemical analysis instrument, is mainly used in quantitative liquid separating and quantitative liquid feeding in the chemical analysis.

Pipette is domestic and international general chemical analysis quantitative liquid separating and liquid feeding instrument, and present pipette all adopts the rubber pipette bulb imbibition, needs artificial " zero " point of adjusting.For quantitative liquid feeding, need manual operations with common buret, though and with automatic buret liquid feeding automatically, cost is higher, home products is generally more than 3000 yuan, external is more expensive.

The purpose of this utility model is a kind of automatic pipetting device that moves liquid and quantitative liquid feeding exactly that makes things convenient for of design, so that imbibition and adjustment " zero " point automatically automatically.

Shown in a kind of automatic pipetting device structural representation of Figure of description, the utility model is made up of following part:

No. 2 pipes 1: be used for being connected of surge flask 2 and suction pumps 4, its upper end is curved down to prevent that solution is splashed into when overflowing and wherein enters suction pumps 4 from managing 12 for No. 1;

Surge flask 2: be used for holding from No. 1 pipe 12 solution that overflow;

Liquid-holding pipe 3: hold the overwhelming majority of being moved liquid;

Suction pumps 4: adopt common electromagnetic pump, be used for imbibition;

No. 5 pipes 5: be used to hold part and pipetted liquid;

No. 6 pipes 6: be used for draw solution;

No. 7 pipes 7: be used for discharging and pipetted liquid;

Microswitch 8: the power on/off that is used to control intake valve 14 and suction pumps 4;

Glass threeway 9: be used for conversion suction, discharge opeing process;

Tube connector 10: a kind of hose is used for liquid-holding pipe 3 and No. 1 pipe 12 and No. 5 pipe 5 are connected;

No. 4 pipes 11: be used for the discharging of surge flask 2 spillages;

No. 1 pipe 12: be used to hold a part that is pipetted liquid, its pointed deviation of having avoided the solution convex surface to cause in upper end;

No. 3 pipes 13: be used for being connected of surge flask 2 and intake valve 14;

Intake valve 14: when being used for tapping to surge flask 2 air inlets to eliminate negative pressure wherein.

12, No. 5 pipes 5 of No. 1 pipe in the utility model and the volume sum of liquid-holding pipe 3 are the volume of waiting to move solution, and the liquid-holding pipe of changing different volumes can pipette the solution of different volumes.

The utility model 6 or No. 7 pipes 7 of No. 5 pipes 5 and No. 6 pipes are communicated, or three pipes is not connected, can also whether touch energising and the outage that microswitch 8 is controlled intake valve 14 and suction pumps 4 by this turning handle simultaneously with the rotation of turning handle in the glass threeway 9.When the utility model moves liquid, rotate the turning handle in the glass threeway 9,5 and No. 6 pipes 6 of No. 5 pipes are communicated, this moment, microswitch 8 was not touched, then air bleeding valve 14 cuts off the power supply and suction pumps 4 energisings, thereby suction pumps 4 is bled to make and is produced negative pressure in the surge flask 2, therefore waiting to move liquid enters No. 5 pipes 5 and liquid-holding pipes 3 and manages for No. 1 in 12 through No. 6 pipes 6, when seeing solution when overflow No. 1 pipe 12 upper end, rotate the turning handle of glass threeway 9, when going to 45,6 and No. 7 pipes 7 of 5 and No. 6 pipes of No. 5 pipes are all obstructed, this moment, turning handle touched microswitch 8 just, made suction pumps 4 outages, and intake valve 14 energising air inlets, thereby the negative pressure in the surge flask 2 is eliminated, be rotated further turning handle, 5 and No. 7 pipes of No. 5 pipes 7 are connected, liquid then to be moved can flow out by No. 7 pipes 7.

When the utility model was used for liquid feeding, the spillage of No. 1 pipe 12 can be put back to former bottle by No. 4 pipes 11, this spillage can be drained when being used for separatory.

The utlity model has cost low, simple in structure, easy to operate, unmanned for error component, need not with eye-observation liquid level scale when moving liquid and liquid feeding, move characteristics such as liquid precision height, have the meaning of outbalance for the chemico-analytic comprehensive precision of raising and the degree of accuracy, raising chemical analysis level.

Claims (1)

1. A kind of automatic pipetting device, be mainly used in quantitative liquid separating and liquid feeding in the chemical analysis, it is characterized in that: constitute by No. 2 pipes 1, surge flask 2, liquid-holding pipe 3,6, No. 7 pipes 7 of 5, No. 6 pipes of 4, No. 5 pipes of suction pumps, microswitch 8, glass threeway 9,11, No. 1 pipes of 10, No. 4 pipes of tube connector 12, No. 3 pipes 13, intake valve 14 parts.

Images