CN204882593U - Negative pressure liquid feeding device of full -automatic biochemical analysis appearance - Google Patents

Abstract

The utility model discloses a negative pressure liquid feeding device of full -automatic biochemical analysis appearance, including washing liquid stock solution bucket (1), your two -port valve (6), two -position three way valve (3) and deionized water solution feed system (4), you two -port valve (6) first interface and two -position three way valve (3) first interface intercommunication back with wash the filling opening intercommunication on the station (5), the second interface and washing liquid stock solution bucket (1) the intercommunication of you two -port valve (6), second interface and deionized water solution feed system (4) of two -position three way valve (3) communicate, it still includes vacuum device (2), third interface and vacuum device (2) the intercommunication of two -position three way valve (3). After the structure, the position of washing liquid stock solution bucket can be placed at will more than adopting, need not to rely on the dead weight to supply liquid to the structure that makes the liquid feeding device is compacter.

Description

Negative pressure liquid adding device for automatic biochemical analyzer

technical field

The utility model relates to the technical field of biochemical analysis equipment, in particular to a negative pressure liquid adding device for a fully automatic biochemical analyzer.

Background technique

The automatic biochemical analyzer is an instrument for measuring a specific chemical composition in body fluids based on the principle of photoelectric colorimetry. Due to its fast measurement speed, high accuracy, and small consumption of reagents, it is widely used in hospitals at all levels, epidemic prevention stations, Family planning service stations and other places. Its principle is to automatically run all or part of the steps of sampling, mixing, warm bath detection, result calculation, judgment, display and print results and cleaning in the original manual operation process. In the clinical laboratory, on the one hand, there are many items to be tested, and the components of the corresponding in vitro diagnostic reagents used are complex; , pipes, etc. may be polluted by fibrin, crystals, grease, dyes, etc., thereby breeding bacteria, and cannot guarantee the cleanliness of the instrument. It can be seen that the cleaning effect will directly affect the accuracy of the test results. In order to obtain reliable test results, the cleaning system of the automatic biochemical analyzer is particularly important.

In the prior art, as shown in Figure 1, the liquid adding device of the automatic biochemical analyzer includes a cleaning liquid storage tank 01, a two-position two-way valve 02, a two-position three-way valve 05, a deionized water storage tank 04 and the liquid return station 06, the cleaning liquid storage tank 01 is connected with the first port of the two-position two-way valve 02, the second port of the two-position two-way valve 02 is connected with the first port of the two-position three-way valve 05 and then connected To the workbench 03, the second interface of the two-position three-way valve 05 communicates with the liquid return station 06, and the third interface of the two-position three-way valve 05 communicates with the deionized water storage tank 04. Its working principle is that the cleaning liquid flows down from the high position down the pipeline by its own weight, and the cleaning liquid stays in the pipeline through the timing opening of the two-position two-way valve 02, and then the two-position three-way valve 05 is opened to make the cleaning liquid flow down the pipeline. The dehydrated ionized water and the cleaning solution are mixed in a certain proportion and sent to the workbench. However, the problem with this liquid adding device is that since the cleaning liquid flows down the pipeline from a high position by its own weight, the cleaning liquid storage tank must be located at a higher position to flow down by its own weight. , In this way, in order to better realize the self-weight, the installation position of the washer fluid storage tank is fixed, resulting in the volume of the entire liquid adding device becoming huge.

Utility model content

The technical problem to be solved by the utility model is to provide a negative pressure liquid adding device of a fully automatic biochemical analyzer with a simple structure, a compact volume, and a more free placement of the cleaning liquid storage tank.

In order to solve the above technical problems, the negative pressure liquid feeding device of the automatic biochemical analyzer provided by the utility model includes a cleaning liquid storage tank, a two-position two-way valve, a two-position three-way valve and a deionized water supply system. The first interface of the two-position two-way valve is connected with the first interface of the two-position three-way valve and then connected with the liquid filling port on the cleaning station, the second interface of the two-position two-way valve is connected with the cleaning liquid storage tank, the two-position three-way The second port of the through valve communicates with the deionized water supply system; it also includes a negative pressure device, and the third port of the two-position three-way valve communicates with the negative pressure device.

The said negative pressure device is the pump assembly included in the automatic biochemical analyzer.

The cleaning liquid storage tank is located at a low position, and the end of the pipeline connected with the second interface of the two-position two-way valve extends into the cleaning liquid level in the cleaning liquid storage tank, and the end of the pipeline is connected with the cleaning liquid. form a closed space.

There are two cleaning liquid storage barrels, two corresponding two-position two-way valves and two two-position three-way valves, and two pipelines connected to the liquid filling port on the cleaning station.

After adopting the above structure, the utility model has the following advantages compared with the prior art:

1) Since one of the interfaces of the two-position three-way valve is connected to the negative pressure device, in this way, under the action of the negative pressure device, the cleaning liquid in the cleaning liquid storage tank is sucked into the pipeline, and then mixed with deionized water It is mixed according to a certain ratio and transported to the cleaning station. Therefore, the position of the cleaning liquid storage tank can be placed at will, and there is no need to rely on its own weight for liquid supply, so that the structure of the liquid adding device is more compact;

2) The negative pressure device adopts the original pump assembly in the automatic biochemical analyzer, so there is no need to add new parts to the instrument, further simplifying the structure;

3) The cleaning liquid storage tank can be placed at a low position, so that the cleaning liquid storage tank can be placed at any position inside the instrument at will, which is more free.

Description of drawings

Fig. 1 is a system schematic diagram of a liquid adding device of a fully automatic biochemical analyzer in the prior art.

Fig. 2 is a schematic diagram of the system of the negative pressure liquid adding device of the automatic biochemical analyzer of the present invention.

Among them, in the prior art: 01, cleaning liquid storage tank; 02, two-position two-way valve; 03, workbench; 04, deionized water supply system; 05, two-position three-way valve; 06, liquid return station ;

In the utility model: 1. Cleaning liquid storage tank; 2. Negative pressure device; 3. Two-position three-way valve; 4. Deionized water supply system; 5. Cleaning station; 6. Two-position two-way valve.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

It can be seen from the system schematic diagram of the negative pressure liquid addition device of the automatic biochemical analyzer of the present invention shown in Figure 2 that the liquid addition device of the automatic biochemical analyzer includes a cleaning liquid storage tank 1 and a two-position two-way valve 6 , the two-position three-way valve 3 and the deionized water supply system 4, the first interface of the two-position two-way valve 6 communicates with the first interface of the two-position three-way valve 3 and then communicates with the liquid filling port on the cleaning station 5, The second interface of the two-position two-way valve 6 communicates with the cleaning liquid storage tank 1 , and the second interface of the two-position three-way valve 3 communicates with the deionized water supply system 4 . It also includes a negative pressure device 2 , and the third port of the two-position three-way valve 3 communicates with the negative pressure device 2 .

The negative pressure device 2 is a pump assembly included in the automatic biochemical analyzer.

The cleaning liquid storage tank 1 is located at a low position, and the end of the pipeline connected with the second interface of the two-position two-way valve 6 extends into the cleaning liquid level in the cleaning liquid storage tank 1, and the end of the pipeline Form a closed space with cleaning fluid.

The number of cleaning fluid storage tanks 1 is two, and the corresponding two-position two-way valve 6 and two-position three-way valve 3 are both two, which are connected to the pipeline of the liquid filling port on the cleaning station 5 for two.

The working process of the utility model is as follows: the cleaning liquid and the pipeline extending into the liquid surface form a closed space. When the two-position two-way valve 6 is opened at regular intervals, the pressure difference between the negative pressure device 2 and the atmospheric pressure will reduce the pressure difference between the negative pressure device 2 and the atmosphere. The cleaning liquid in the cleaning liquid storage tank 1 is pressed into the pipeline from the low position upward, so that the cleaning liquid stays in the pipeline; after that, the deionized water output from the deionized water supply system 4 is opened by opening the two-position three-way valve 3 It is mixed with the cleaning solution in a certain proportion, and then sent to the cleaning station 5.

The above is only a preferred and feasible implementation example of the utility model, and cannot therefore limit the scope of rights of the utility model. Various other corresponding changes, such as the number of cleaning fluid storage tanks can also be more than two, and one or more quantities similar to or the same as two-position two-way valves, two-position three-way valves, etc. can be used Applicable, all of the above should fall within the protection scope of the claims of the present invention.

Claims (4)

1. A negative pressure liquid filling device for a fully automatic biochemical analyzer, including a cleaning liquid storage tank (1), a two-position two-way valve (6), a two-position three-way valve (3) and a deionized water supply system (4), the first interface of the two-position two-way valve (6) communicates with the first interface of the two-position three-way valve (3) and then communicates with the liquid filling port on the cleaning station (5), and the two-position two-way valve ( 6) The second interface is connected with the cleaning liquid storage tank (1), and the second interface of the two-position three-way valve (3) is connected with the deionized water supply system (4); it is characterized in that it also includes negative pressure device (2), the third port of the two-position three-way valve (3) communicates with the negative pressure device (2). 2. The negative pressure liquid adding device of the fully automatic biochemical analyzer according to claim 1, characterized in that: said negative pressure device (2) is a pump assembly contained in the fully automatic biochemical analyzer. 3. The negative pressure liquid adding device of the fully automatic biochemical analyzer according to claim 1, characterized in that: the cleaning liquid storage tank (1) is located at a low position, and is connected to the two-position two-way valve (6) The end of the pipeline communicated with the second interface extends into the liquid surface of the cleaning liquid in the cleaning liquid storage barrel (1), and the end of the pipeline forms a closed space with the cleaning liquid. 4. The negative pressure liquid adding device of the fully automatic biochemical analyzer according to claim 1, characterized in that: the quantity of the cleaning liquid storage tank (1) is two, and the corresponding two-position two-way valve ( 6) and the two-position three-way valve (3) are both two in quantity, and there are two pipelines connected to the liquid filling port on the cleaning station (5).