CN216387086U - Automatic flow analyzer - Google Patents

Abstract

The present invention provides an automated flow analyzer comprising an analysis device; the puncture sample injection needle is used for puncturing the cover body of the sample tube; the inlet of the proportional valve is respectively communicated with the puncture sample injection needle and the container through pipelines, and the outlet is communicated with the capillary and the delivery pump; the capillary tube is bent into a disc shape; the outlet of the delivery pump is communicated with the analysis device; the guide rail is vertically arranged, the puncture sampling needle is arranged on the guide rail, and the first driving unit drives the puncture sampling needle to move up and down on the guide rail. The utility model has the advantages of high detection efficiency, automation and the like.

Description

Automatic flow analyzer

Technical Field

The utility model relates to digestion, in particular to an automatic flow analyzer.

Background

At present, full-automatic flow analysis instruments on the market generally consist of an automatic sampler and an analysis channel to be tested, and preparation work before testing comprises preparation of chemical reagents and standard solutions; for those unstable standard solutions, such as sulfide standard solutions, a temporary ready-to-use formulation is required; the sample which is out of the curve concentration range in the actual sample determination process needs to be determined after dilution. The methods for diluting standard solutions and superscalar samples are generally as follows:

1. a manual method; the technical requirement on an operator is high, a large number of chemical vessels and measuring devices are required to be used in the preparation process, the problem of pollution caused by unclean vessels exists, and the time arrangement on the operator is severe under the condition of temporary use and existing preparation;

2. the semi-automatic dilution workstation prepares diluted solution, and semi-automatic dilution workstation comprises sample frame, sequential injection system, diluent for the process of simulation manual operation, and the dilution flow is: the sample tube for placing the mother solution on the sample frame absorbs the mother solution, absorbs the diluent, releases the diluent into the sample tube at the position of the solution after dilution on the sample frame, and has constant volume to a preset volume, and the sample injection needle absorbs air to blow bubbles on the diluent after constant volume, so that the whole process completely simulates the manual operation flow. The disadvantages of this method are:

the sequential injection is influenced by the pump speed of an injection pump, an initialization flow in the dilution process and quantitative ring cleaning, the period of diluting a sample is long, the quantity of test tubes required to be diluted by adopting a semi-automatic dilution workstation is 2-2.5 times of the quantity of test tubes used in the manual preparation and measurement process, and a large number of external capacity instruments are involved, so that the risk of errors caused by pollution exists.

The dilution speed of the semi-automatic dilution workstation is relatively slow, the adopted sequential injection system is not acid and alkali resistant, the problems of dilution and sample pretreatment can not be realized by simultaneously introducing various diluents, a large number of sample tubes need to be introduced in the dilution process, and the hidden danger caused by unclean sample tubes exists.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides an automatic flow analyzer.

The purpose of the utility model is realized by the following technical scheme:

an automated flow analyzer comprising an analysis device; the automated flow analyzer further comprises:

the puncture sample injection needle is used for puncturing the cover body of the sample tube;

the inlet of the proportional valve is respectively communicated with the puncture sample injection needle and the container through pipelines, and the outlet of the proportional valve is communicated with the capillary tube and the delivery pump;

a capillary tube bent in a disc shape;

the outlet of the delivery pump is communicated with the analysis device;

the guide rail and a first driving unit, the guide rail is vertical to be set up, the puncture sampling needle sets up on the guide rail, a driving unit drive the puncture sampling needle is in translation from top to bottom on the guide rail.

Compared with the prior art, the utility model has the beneficial effects that:

1. the cost is low;

the online dilution greatly saves the sample volume, the capillary tube plays a role in mixing, the capacity is only 500-700 microliter, and the unnecessary waste is reduced;

2. the error is small;

the number of chemical appliances introduced by online dilution is small, only a proportional valve, a capillary tube, a delivery pump, a guide rail and a driving unit are needed, and random errors possibly introduced by the appliances are effectively avoided;

3. the working efficiency is high;

the online dilution analysis speed is high, and the working efficiency is improved;

4. the safety is good;

the sample is arranged in a closed sample tube, the reagent or diluent is in a closed container, and online dilution is carried out under a closed condition, so that the method is friendly to operators and environment;

5. automation;

the driving unit is used for driving the puncture sample injection needle to translate on the guide rail, so that the cover body of the sample tube is automatically punctured, and sampling is performed.

Drawings

The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only for illustrating the technical solutions of the present invention and are not intended to limit the scope of the present invention. In the figure:

FIG. 1 is a schematic diagram of an automated flow analyzer according to an embodiment of the present invention.

Detailed Description

Fig. 1 and the following description depict alternative embodiments of the utility model to teach those skilled in the art how to make and reproduce the utility model. Some conventional aspects have been simplified or omitted for the purpose of explaining the technical solution of the present invention. Those skilled in the art will appreciate that variations or substitutions from these embodiments will be within the scope of the utility model. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the utility model. Thus, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.

Example 1:

fig. 1 shows a schematic structural diagram of an automated flow analyzer according to an embodiment of the present invention, and as shown in fig. 1, the automated flow analyzer includes:

an analysis device 51, the analysis device 51 being prior art in the field;

the puncture sample injection needle 13 is used for puncturing the cover body of the sample tube 81 by the puncture sample injection needle 13;

the inlet of the proportional valve 21 is respectively communicated with the puncture sample injection needle 13 and the container 61 through pipelines, and the outlet of the proportional valve 21 is communicated with the capillary 31 and the delivery pump 41;

a capillary tube 31, the capillary tube 31 being bent in a disk shape such that different liquids are sufficiently mixed within the capillary tube 31;

a delivery pump 41, such as a peristaltic pump, an outlet of the delivery pump 41 being in communication with the analysis device 51;

guide rail 12 and first drive unit 11, the vertical setting of guide rail 12, puncture injection needle 13 sets up on the guide rail 12, the drive of first drive unit 11 puncture injection needle 13 is in translation from top to bottom on the guide rail 12.

To accommodate the multiple sample tubes, further, the automated flow analyzer further comprises:

the rotating disc is arranged on the base and bears a plurality of sample tubes;

a second driving unit for driving the turntable to rotate around a rotation axis.

In order to reduce the positioning difficulty of the sample tubes, a plurality of sample tubes uniformly surround the rotating shaft.

Example 2:

an application example of the automated flow analyzer according to embodiment 1 of the present invention.

In this application example, as shown in fig. 1, the piercing needle 13 is provided on the vertical guide rail 12 via a slider; the first driving unit 11 adopts an electric screw to push the sliding part to move up and down on the vertical guide rail 12; the puncture sample injection needle 13 is connected with the proportional valve 21 through a pipeline, a plurality of containers 61 are connected with the proportional valve 21, and the containers 61 are filled with diluent, reagent and the like; the outlet of the proportional valve 21 is communicated with a capillary tube 31, and the capillary tube 31 is bent into a disc shape; the transfer pump 41 is a peristaltic pump for connecting the capillary 31 and the analyzing device 51.

The automatic flow analyzer of the present embodiment works in the following manner:

the sample tube 81 with a cover body is fixedly arranged at the lower side of the puncture sample injection needle 13, and the first driving unit 11 drives the puncture sample injection needle 13 to move horizontally downwards along the guide rail 12, puncture the cover body and enter the sample tube 81;

the delivery pump 41 works to draw a sample and enter the capillary 31, and then the first driving unit 11 drives the puncture sample injection needle 13 to move upwards so as to withdraw the sample tube 81;

similarly, a diluent or the like is drawn into the capillary 31; the diluent and the sample are sufficiently mixed in the capillary 31;

the diluted sample enters the analysis device 51.

Example 3:

an application example of the automated flow analyzer according to embodiment 1 of the present invention is different from embodiment 2 in that:

the sample tubes are uniformly arranged on the turntable, the turntable is arranged on the base and is driven by the second driving unit to rotate, so that the sample tubes on the turntable are positioned on the lower side of the puncture sample injection needle at intervals.

Claims (3)

1. An automated flow analyzer comprising an analysis device; characterized in that, the automated flow analyzer further comprises:

the puncture sample injection needle is used for puncturing a cover body of the sample tube;

the inlet of the proportional valve is respectively communicated with the puncture sample injection needle and the container through pipelines, and the outlet of the proportional valve is communicated with the capillary tube and the delivery pump;

a capillary tube bent in a disc shape;

the outlet of the delivery pump is communicated with the analysis device;

the guide rail and a first driving unit, the guide rail is vertical to be set up, the puncture sampling needle sets up on the guide rail, a driving unit drive the puncture sampling needle is in translation from top to bottom on the guide rail.

2. The automated flow analyzer of claim 1, further comprising:

the rotating disc is arranged on the base and bears a plurality of sample tubes;

a second driving unit for driving the turntable to rotate around a rotation axis.

3. The automated flow analyzer of claim 2, wherein a plurality of sample tubes are uniformly wound around the rotational axis.

Images