阅读说明：本技术 一种水质检测管路系统及水质检测方法 (Water quality detection pipeline system and water quality detection method ) 是由 党小锋 刘全义 翁端佳 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种水质检测管路系统及水质检测方法,包括：公共通道、废液池、动力机构、定量检测机构和多通道机构；所述多通道机构、定量检测机构、动力机构和废液池依次设置于所述公共通道上,所述动力机构与定量检测机构之间的公共通道上接设有气泵。本装置通过多通道阀上一个支管与大气连接,通过流程控制使管路内特定时间进入空气,在不影响定量的情况下,能将产生交叉污染的两段液体分开,大大降低了测试过程中试剂消耗量,解决了试剂交叉污染影响测量的问题。(The invention discloses a water quality detection pipeline system and a water quality detection method, which comprise the following steps: the device comprises a public channel, a waste liquid pool, a power mechanism, a quantitative detection mechanism and a multi-channel mechanism; the multi-channel mechanism, the quantitative detection mechanism, the power mechanism and the waste liquid pool are sequentially arranged on the public channel, and an air pump is connected to the public channel between the power mechanism and the quantitative detection mechanism. The device is connected with the atmosphere through a branch pipe on the multi-channel valve, air enters the pipeline at a specific time through flow control, two sections of liquid which generate cross contamination can be separated under the condition of not influencing quantification, the reagent consumption in the test process is greatly reduced, and the problem that the measurement is influenced by the cross contamination of the reagent is solved.)

1. A water quality testing pipe-line system, characterized by, includes: the device comprises a public channel, a waste liquid pool, a power mechanism, a quantitative detection mechanism and a multi-channel mechanism; the multi-channel mechanism, the quantitative detection mechanism, the power mechanism and the waste liquid pool are sequentially arranged on the public channel, and an air pump is connected to the public channel between the power mechanism and the quantitative detection mechanism;

the quantitative detection mechanism includes: the device comprises a liquid storage area, a reaction tank, a liquid level detector and a detection device; the liquid storage area and the liquid level detection meter are both arranged on a common channel, and the liquid storage area is positioned between the liquid level detection meter and the multi-channel mechanism and/or between the liquid level detection meter and the air pump; two ends of the reaction tank are respectively communicated with public channels at two ends of the liquid level detector through a first branch pipeline and a second branch pipeline, one end of each of the first branch pipeline and the second branch pipeline is respectively connected with two ends of the reaction tank through a two-way valve, and the other end of each of the first branch pipeline and the second branch pipeline is respectively communicated with the public channels through a three-way valve; a detection device is arranged on the reaction tank;

the multichannel mechanism includes: a multi-channel valve and a manifold; each opening of the multi-channel valve is connected with a branch pipe; the branch pipes at least comprise a sample branch pipe, a reagent branch pipe, a cleaning branch pipe, a waste liquid branch pipe and an air branch pipe.

2. A water quality testing pipe system as claimed in claim 1 wherein said reservoir is a helical pipe.

3. A water quality testing pipe system as claimed in claim 1 wherein said multi-channel valve is a multi-channel selector valve.

4. A water quality testing pipe system as claimed in claim 1 wherein said multi-channel valve is a multi-channel solenoid valve.

5. A water quality detection pipeline system according to claim 1, wherein the power mechanism is a peristaltic pump, a gear pump, a constant flow pump or an injection pump.

6. The water quality detection pipeline system according to claim 1, wherein the air pump is connected to a common channel between the power mechanism and the quantitative detection mechanism through an air pump three-way valve.

7. A water quality testing method characterized by using the water quality testing pipe system of any one of claims 1 to 6, comprising the steps of:

(1) the power mechanism is operated, and a sample/reagent is drawn by the sample branch pipe/reagent branch pipe of the multi-channel mechanism to enter a liquid storage area of the quantitative detection mechanism and is quantified by the liquid level detection meter;

(2) switching the multi-channel valve to an air branch pipe, sucking the sample/reagent which is quantified in the liquid storage area through a public channel, and then entering the sample/reagent into a reaction tank of a quantitative detection mechanism until the sample and the reagent which are required for detection are quantified respectively and added into the reaction tank for reaction;

(3) after the reaction in the reaction tank of the quantitative detection mechanism is finished, detecting the components of the reaction liquid in the reaction tank by a detection device;

(4) after detection is finished, the multi-channel valve is switched to a waste liquid branch pipe, liquid after reaction in the reaction tank is pushed by an air pump, and the two-way valve and the three-way valve are adjusted and discharged from the waste liquid branch pipe of the multi-channel valve;

(5) and switching the multi-channel valve to a cleaning branch pipe, sucking cleaning liquid through the cleaning branch pipe of the multi-channel mechanism, entering the reaction tank for cleaning, and then discharging the cleaning liquid to a waste liquid tank.

8. A water quality detection method according to claim 7, wherein in step (1), the two-way valves at both ends of the reaction tank are closed, and in step (2), the two-way valves at both ends of the reaction tank are opened.

Technical Field

The invention relates to the technical field of water quality detection, in particular to a water quality detection pipeline system and a water quality detection method.

Background

In the water quality detection industry, reagent consumption of most detectors is high, and reagents used in the process of detecting certain parameters are high in toxicity and serious in pollution. The actual consumption of the detection instrument is high, and the fundamental reason is that the problems of cross contamination between reagents and cross contamination between waste liquid and the reagents cannot be effectively solved in the liquid path principle method, the liquid pumping amount is mostly selected to be increased, and a method of flushing a pipeline by using a large amount of reagents after the test is finished is adopted, so that the liquid path principle method capable of effectively avoiding the cross contamination is urgently needed.

Disclosure of Invention

The invention aims to provide a water quality detection pipeline system and a water quality detection method.

In order to achieve the above object, the present invention employs the following:

a water quality detection pipeline system and a water quality detection method comprise the following steps: the device comprises a public channel, a waste liquid pool, a power mechanism, a quantitative detection mechanism and a multi-channel mechanism; the multi-channel mechanism, the quantitative detection mechanism, the power mechanism and the waste liquid pool are sequentially arranged on the public channel, and an air pump is connected to the public channel between the power mechanism and the quantitative detection mechanism;

the quantitative detection mechanism includes: the device comprises a liquid storage area, a reaction tank, a liquid level detector and a detection device; the liquid storage area and the liquid level detection meter are both arranged on a common channel, and the liquid storage area is positioned between the liquid level detection meter and the multi-channel mechanism and/or between the liquid level detection meter and the air pump; two ends of the reaction tank are respectively communicated with public channels at two ends of the liquid level detector through a first branch pipeline and a second branch pipeline, one end of each of the first branch pipeline and the second branch pipeline is respectively connected with two ends of the reaction tank through a two-way valve, and the other end of each of the first branch pipeline and the second branch pipeline is respectively communicated with the public channels through a three-way valve; a detection device is arranged on the reaction tank;

the multichannel mechanism includes: a multi-channel valve and a manifold; each opening of the multi-channel valve is connected with a branch pipe; the branch pipes at least comprise a sample branch pipe, a reagent branch pipe, a cleaning branch pipe, a waste liquid branch pipe and an air branch pipe.

Preferably, the liquid storage zone is a helical pipe.

Preferably, the multi-channel valve is a multi-channel selector valve.

Preferably, the multi-channel valve is a multi-channel solenoid valve.

Preferably, the power mechanism is a peristaltic pump or a syringe pump.

Preferably, the air pump is arranged between the power mechanism and the quantitative detection mechanism through a three-way valve.

A water quality detection pipeline system comprises the following detection steps:

(1) the power mechanism is operated, and a sample/reagent is drawn by the sample branch pipe/reagent branch pipe of the multi-channel mechanism to enter a liquid storage area of the quantitative detection mechanism and is quantified by the liquid level detection meter;

(2) switching the multi-channel valve to an air branch pipe, sucking the sample/reagent which is quantified in the liquid storage area through a public channel, and then entering the sample/reagent into a reaction tank of a quantitative detection mechanism until the sample and the reagent which are required for detection are quantified respectively and added into the reaction tank for reaction;

(3) after the reaction in the reaction tank of the quantitative detection mechanism is finished, detecting the components of the reaction liquid in the reaction tank by a detection device;

(4) after detection is finished, the multi-channel valve is switched to a waste liquid branch pipe, liquid after reaction in the reaction tank is pushed by an air pump, and the two-way valve and the three-way valve are adjusted and discharged from the waste liquid branch pipe of the multi-channel valve;

(5) and switching the multi-channel valve to a cleaning branch pipe, sucking cleaning liquid through the cleaning branch pipe of the multi-channel mechanism, entering the reaction tank for cleaning, and then discharging the cleaning liquid to a waste liquid tank.

Preferably, in the step (1), the two-way valves at the two ends of the reaction tank are both closed, and in the step (2), the two-way valves at the two ends of the reaction tank are both opened.

The invention has the following advantages:

1. the system is connected with the atmosphere through a branch pipe on a multi-channel electromagnetic valve or a multi-channel rotary valve, air enters the pipeline at a specific time through flow control, two sections of liquid which generate cross contamination can be separated under the condition of not influencing quantification, the reagent consumption in the test process is greatly reduced, and the problem that the measurement is influenced by the cross contamination of the reagent is fundamentally solved.

2. The power mechanism of the system has simple requirements, adopts an injection pump or a peristaltic pump, can achieve operations such as quantitative sampling, waste discharge and the like only by running in a single direction, only needs to move in one direction, does not need to perform return stroke elimination operation, is simple and convenient, and avoids cross contamination to the maximum extent.

3. This system combines multi-ported valve and level detection meter, through the certain pipeline volume of level detection meter ration, reaches accurate ration liquid, and reaction tank is taken out with quantitative reagent to rethread sampling device and multi-ported valve cooperation.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a water quality detecting pipeline system and a water quality detecting method according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a water quality detecting pipeline system and a water quality detecting method according to a second embodiment of the present invention.

FIG. 3 is a schematic diagram of a water quality detecting pipeline system and a water quality detecting method according to a third embodiment of the present invention.

FIG. 4 is a diagram of a water quality detecting pipeline system and a water quality detecting method according to a fourth embodiment of the present invention.

In the figures, the various reference numbers are:

1-public channel, 2-waste liquid pool, 3-power mechanism, 4-quantitative detection mechanism, 41-liquid storage area, 42-reaction pool, 43-liquid level detector, 44-detection device, 45-three-way valve, 46-two-way valve, 5-multi-channel mechanism, 51-multi-channel valve, 52-branch pipe, 6-valve, 7-air pump, 8-air pump three-way valve, 9-first branch pipe and 10-second branch pipe.

Detailed Description

In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, an embodiment of the water quality detecting pipe system of the present invention includes: public channel 1, waste liquid pond 2, power unit 3, quantitative determination mechanism 4 and multichannel mechanism 5, quantitative determination mechanism 4 includes: a liquid storage area 41, a reaction tank 42, a liquid level detection meter 43 and a detection device 44; the multichannel mechanism 5 includes a multichannel valve 51 and a branch pipe 52.

Further, the public channel 1 is respectively connected with the waste liquid pool 2, the power mechanism 3, the quantitative detection mechanism 4 and the multi-channel mechanism 5, wherein the waste liquid pool 2 and the multi-channel mechanism 5 are located at two ends of the public channel 1, and the power mechanism 3 and the quantitative detection mechanism 4 are located in the middle.

Further, waste liquid pond 2 has been placed to the leftmost end of common channel 1, and the opening of waste liquid pond 2 corresponds with the leftmost end of common channel 1, and waste liquid that follow common channel 1 discharge can be collected to waste liquid pond 2 promptly.

Further, the power mechanism 3 adopts a peristaltic pump to realize the function of liquid flowing in the pipeline, and the peristaltic pump is arranged on the public channel 1 close to one side of the waste liquid pool 2.

Further, the reaction tank 42 is provided with the detection device 44, two-way valves 46 are arranged on two sides of the reaction tank 42, the outflow of liquid can be controlled, the two-way valves 46 are respectively connected with the two three-way valves 45 through the first branch pipeline 9 and the second branch pipeline 10, the two three-way valves 45 are arranged on the common channel 1, the liquid level detection meter 43 is arranged between the two three-way valves 45, the liquid storage area 41 is arranged on the right side of the two three-way valves 45, and the liquid storage area 41 is formed by spiral pipelines, so that the accurate quantification is favorably realized.

Further, the multi-channel valve 51 is a multi-channel solenoid valve, and the multi-channel valve 51 is connected with eight branch pipes 52, which include four reagent branch pipes, one waste liquid branch pipe, one air branch pipe, one sample branch pipe, and one cleaning branch pipe. Valves 6 are provided in each of the eight branch pipes 52, and the common passage 1 is connected to the center of the multi-passage valve 51.

Further, an air pump 7 is connected between the power mechanism 3 and the three-way valve 45 of the quantitative detection mechanism 4 through an air pump three-way valve 8, and the air pump 7 starts to work after the reaction of the sample liquid in the reaction tank 42 is completed, so as to provide a discharge force for discharging the reacted sample liquid through the waste liquid branch pipe.

The working principle of the device is as follows: the three-way valve 45 keeps the public channel 1 in an unblocked state, the pipelines at the left end and the right end of the reaction tank 42 are in a closed state, the valve 6 on each branch pipe 52 is closed, one reagent branch pipe (which can also be a sample test pipe) to be detected is opened, the power mechanism 3 operates to enable the reagent to enter the liquid storage area 41 and the liquid level detector 43 to quantify the liquid, then the valve 6 of the reagent branch pipe is closed, the valve 6 of the air branch pipe is opened, the two-way valve 46 at the two ends of the reaction tank 42 is opened, the right three-way valve 45 keeps three paths unblocked, the left three-way valve 45 keeps the unblocked between the power mechanism 3 and the reaction tank 42, the power mechanism 3 operates, the reagent enters the reaction tank 42, and the operation is repeated, so that the reagent in the four reagent branch pipes and the sample.

The three-way valve 45 is normally opened, the multi-way valve is communicated with air, the power mechanism 3 is also used for pumping, the advantages are that the sample pumping and the reagent pumping are in the same direction, the pumped liquid automatically removes the liquid between the front end liquid level detector 43 and the three-way valve 45, the part of liquid plays a role in rinsing, so that the extracted liquid is more accurate, the cross contamination is less, meanwhile, the power mechanism 3 does not need to perform return stroke eliminating operation when the direction is switched, the operation is simpler, when another reagent is extracted next time, the power mechanism 3 is still the operation of taking out, the participation part of the former reagent enters the waste liquid pool 2 on the left side from the left side through the power mechanism 3, the whole process of taking out the reagent and taking out the reagent to the reaction pool, the power mechanism 3 is all one direction, the operation is simple and convenient, the quantification is accurate, the cross contamination not only has the isolation of an air column, but also has the front end to rinse, and the cross contamination is reduced to the lowest.

After the reaction is completed, the detecting means 44 detects the components of the reaction liquid in the reaction cell 42.

After the detection is finished, the multi-channel valve 51 is switched to the waste liquid branch pipe, the air pump 7 starts to work, waste liquid is discharged through the waste liquid branch pipe, the rear power mechanism 3 draws cleaning liquid from the cleaning branch pipe, the cleaning liquid is discharged into the waste liquid pool 2, and the cleaning is finished inside the mechanism.

Fig. 2 shows a second embodiment of the device, in which the power mechanism 3 is a syringe pump.

Fig. 3 shows a third embodiment of the present device, in which the multi-channel valve 51 is a multi-channel selection valve, and no valve 6 is disposed on each branch pipe 52, and the multi-channel selection valve can freely connect the common channel 1 with the branch pipe 52, thereby avoiding frequent opening and closing of the valve 6 of the branch pipe 52 and improving efficiency.

FIG. 4 shows a fourth embodiment of the present device, in which two liquid storage areas 41 are installed on both sides of a three-way valve 45, a multi-way valve 51 is a multi-way selector valve, and an air branch is connected in parallel to one reagent branch through the three-way valve 45.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.