CN219532995U - Water quality monitoring electrode on-line measuring device - Google Patents

Abstract

The utility model discloses an on-line measurement device for water quality monitoring electrodes, which relates to the technical field of on-line automatic measurement of water quality, and comprises a measurement pool in which electrodes are arranged, and also includes a plurality of cleaning nozzles, a peristaltic pump and a multi-way valve. The upper part of one side of the measuring pool is connected with an overflow pipe, and multiple cleaning nozzles are fixedly installed on both sides of the measuring pool; the bottom of the measuring pool is connected to a peristaltic pump through a pipeline, the bottom of the peristaltic pump is connected to a drain pipe, and the bottom of the drain pipe is connected to The multi-way valve is connected to the air pipe, water sample pipe, standard liquid pipe, verification liquid pipe, pure water pipe, activation liquid pipe and waste liquid pipe respectively. Realize automatic measurement, calibration, and verification functions; automatically pump specific activators into the measuring pool to activate specific electrodes; realize cleaning function by automatically spraying cleaning water to the electrode surface and the inner wall of the measurement chamber.

Description

A water quality monitoring electrode online measurement device

technical field

The utility model relates to the technical field of online automatic measurement of water quality, in particular to an online measurement device for water quality monitoring electrodes.

Background technique

In the automatic monitoring of water quality, in order to ensure the long-term stability and accuracy of online monitoring data, quality control must be carried out, and the test accuracy of the electrodes must be assessed to ensure that the error of the data is within the allowable range, mainly through regular cleaning, calibration, and verification of the electrodes. assessment. Cleaning can remove the interfering substances attached to the electrode, and the known concentration standard solution can be checked to reflect the basic state of the online monitoring electrode and whether the standard curve is normal. If it is not normal, it needs to be calibrated with the standard solution.

At present, in the field of online monitoring of water quality, electrode (such as pH electrode, conductivity electrode, dissolved oxygen electrode, turbidity electrode, etc.) measurement technology has been widely used. However, the existing measuring devices have the following problems: the first is that usually only the measuring cell can be cleaned and the electrode itself cannot be cleaned, and the cleanliness of the electrode itself, especially the sensor part, has a key influence on accurate measurement; the second is that online calibration and verification cannot be realized, usually It is necessary to take the electrode out of the device and put it into a beaker containing a standard liquid or a verification liquid for manual calibration and verification; the third is that there is no online activation function, such as a pH electrode, because the glass electrode method is used, and the filling liquid will change with the Use and loss, especially in water with low conductivity, will cause inaccurate pH electrode measurement and require frequent calibration.

Utility model content

In order to solve the shortcomings of the existing technology, the utility model provides an online measurement device for water quality monitoring electrodes, which can realize automatic measurement, calibration and verification functions; it can automatically pump specific activators into the measurement pool to activate specific electrodes; through automatic Spray cleaning water to the surface of the electrode and the wall of the measuring chamber to realize the cleaning function.

In order to realize the purpose of this utility model, it is proposed to adopt the following scheme:

A water quality monitoring electrode on-line measurement device includes a measuring pool, electrodes are arranged in the measuring pool, and a plurality of cleaning nozzles, a peristaltic pump, and a multi-way valve are also included.

The upper part of one side of the measuring pool is connected with an overflow pipe, and multiple cleaning nozzles are fixedly installed on both sides of the measuring pool;

The bottom of the measuring tank is connected with a peristaltic pump through a pipeline. The bottom of the peristaltic pump is connected with a drain pipe. The bottom of the drain pipe is connected with a multi-way valve. Water pipes, activation liquid pipes and waste liquid pipes.

Further, when the peristaltic pump reverses and the air pipe is turned on, the air pipe stirs the liquid in the measuring cell through air bubbles.

Further, when the peristaltic pump reverses and the water sample tube, standard liquid tube, verification liquid tube, pure water tube, and activation liquid tube are opened respectively, the water sample tube, standard liquid tube, verification liquid tube, pure water tube, and activation liquid tube The tube pumps water sample, standard solution, check solution, pure water and activation solution into the measuring pool respectively.

Further, when the peristaltic pump rotates forward and the waste liquid pipe is opened, the waste liquid pipe discharges the liquid from the measuring pool.

Further, the shape of the measurement pool is square, and the bottom is arc-shaped.

Further, a total of four cleaning nozzles are provided, the two cleaning nozzles on the upper layer are connected to the measuring pool obliquely downward, and the two cleaning nozzles on the lower layer are connected to the measuring pool obliquely upward.

Further, the material of the measuring pool is plastic, metal or glass.

Further, the electrodes include one or more of pH electrodes, conductivity electrodes, dissolved oxygen electrodes, and turbidity electrodes.

The beneficial effects of the utility model are: simple structure, convenient use, through the cooperation of the peristaltic pump and the multi-way valve, water samples, standard liquids, verification liquids or pure water can be selectively pumped into the measuring pool to realize measurement, calibration and verification , Cleaning function; Through the cooperation of peristaltic pump and multi-way valve, specific activator can be selectively pumped into the measurement pool to activate specific electrodes, prolong service life and improve measurement accuracy; through cleaning nozzles, the electrode surface and measurement Cleaning water is sprayed from the inner wall, and the cleaning effect is good, which ensures the long-term cleanliness of the measuring pool and will not interfere with the measurement of the substance to be measured due to sediment.

Description of drawings

Fig. 1 is a schematic diagram of an online measurement device for water quality monitoring electrodes of an embodiment.

Detailed ways

As shown in FIG. 1 , this embodiment provides an online measuring device for water quality monitoring electrodes, including a measuring pool 1 , four cleaning nozzles 3 , a peristaltic pump 5 , and a multi-way valve 6 .

Specifically, the measuring cell 1 is provided with an electrode 2, and the electrode 2 includes one or more of a pH electrode, a conductivity electrode, a dissolved oxygen electrode, and a turbidity electrode. The upper part of one side of the measuring pool 1 is communicated with an overflow pipe 7 . The material of the measuring cell 1 is plastic, metal or glass. For example, transparent and inert materials such as plexiglass are used, which can facilitate the observation of the working conditions of the electrode 2 and will not affect the water quality of the water sample. The shape of the measuring pool 1 is square, and the bottom is arc-shaped, which facilitates the discharge of the liquid inside the measuring pool 1 and further reduces residues.

Specifically, four cleaning nozzles 3 are symmetrically and fixedly installed on both sides of the measuring pool 1, the two cleaning nozzles 3 on the upper layer are connected to the measuring pool 1 obliquely downward, and the two cleaning nozzles 3 on the lower layer are connected to the measuring pool obliquely upward 1, that is to say, the four cleaning nozzles 3 nozzle extension lines form an approximate X shape, the cleaning nozzles 3 can spray cleaning water to the inside of the measuring tank 1 and the electrode 2, and use the impact force of the water to clean the inside of the measuring tank 1 and electrode 2.

Specifically, the bottom of the measuring tank 1 is connected with a peristaltic pump 5 through a pipeline, and the bottom of the peristaltic pump 5 is connected with a drain pipe 4, and the bottom of the drain pipe 4 is connected with a multi-way valve 6, and the multi-way valve 6 is respectively connected with the air pipe 8 and the water sample. Pipe 9, standard liquid pipe 10, checking liquid pipe 11, pure water pipe 12, activation liquid pipe 13 and waste liquid pipe 14.

The peristaltic pump 5 can rotate forward or reversely. When the peristaltic pump 5 is reversed and the air tube 8 is opened, the air tube 8 will stir the liquid in the measuring cell 1 through air bubbles. When the peristaltic pump 5 reverses and the water sample tube 9, the standard liquid tube 10, the checking liquid tube 11, the pure water tube 12, and the activation liquid tube 13 are opened respectively, the water sample tube 9, the standard liquid tube 10, the checking liquid tube 11, The pure water pipe 12 and the activation liquid pipe 13 pump water sample, standard liquid, verification liquid, pure water, and activation liquid into the measurement pool 1 respectively. The activation solution containing potassium chloride is pumped into the measuring cell 1. When the peristaltic pump 5 rotates forward and the waste liquid pipe 14 is opened, the waste liquid pipe 14 discharges the waste liquid from the measuring cell 1 .

In summary, the water quality monitoring electrode online measurement device can selectively pump water samples, standard liquids, verification liquids or pure water into the measurement pool 1 through the cooperation of the peristaltic pump 5 and the multi-way valve 6 to realize measurement and calibration. , verification, and cleaning functions; through the cooperation of the peristaltic pump 5 and the multi-way valve 6, a specific activator can be selectively pumped into the measurement pool to activate the specific electrode, prolong the service life, and improve the measurement accuracy; by cleaning the nozzle 3, The cleaning water is sprayed on the surface of the electrode 2 and the inner wall of the measurement chamber 1, and the cleaning effect is good, which ensures the long-term cleanliness of the measurement pool 1 and will not interfere with the measurement of the substance to be measured due to deposits.

The above embodiments are only used to illustrate the technical ideas and features of the present utility model, and do not mean to be unique or to limit the present utility model. Those skilled in the art should understand that without departing from the scope of the present utility model, various changes or equivalent replacements made to the present utility model all belong to the protection scope of the present utility model.

Claims (8)

1. An online measurement device for water quality monitoring electrodes, including a measuring pool (1), and an electrode (2) is arranged in the measuring pool (1), characterized in that it also includes a plurality of cleaning nozzles (3), a peristaltic pump (5) , multi-way valve (6); The upper part of one side of the measuring pool (1) is connected with an overflow pipe (7), and a plurality of cleaning nozzles (3) are respectively fixedly installed on both sides of the measuring pool (1); The bottom of the measuring tank (1) is connected with a peristaltic pump (5) through a pipeline, and the bottom of the peristaltic pump (5) is connected with a drain pipe (4), and the bottom of the drain pipe (4) is connected with a multi-way valve (6), and the multi-way valve (6) Connect the air pipe (8), water sample pipe (9), standard liquid pipe (10), verification liquid pipe (11), pure water pipe (12), activation liquid pipe (13) and waste liquid pipe ( 14). 2. The online measuring device for water quality monitoring electrodes according to claim 1, characterized in that, when the peristaltic pump (5) is reversed and the air pipe (8) is opened, the air pipe (8) passes through the air bubbles to the measurement pool (1) Stir the liquid inside. 3. The online measurement device for water quality monitoring electrodes according to claim 1, characterized in that when the peristaltic pump (5) is reversed and the water sample tube (9), standard liquid tube (10), check liquid tube (11), When the pure water pipe (12) and the activation liquid pipe (13) are opened respectively, the water sample pipe (9), the standard liquid pipe (10), the verification liquid pipe (11), the pure water pipe (12), the activation liquid pipe (13 ) pump the water sample, standard solution, check solution, pure water and activation solution into the measuring pool (1) respectively. 4. The online measuring device for water quality monitoring electrodes according to claim 1, characterized in that, when the peristaltic pump (5) is rotating forward and the waste liquid pipe (14) is opened, the waste liquid pipe (14) will transfer the liquid from the measurement pool ( 1) discharge. 5. The online measuring device for water quality monitoring electrodes according to claim 1, characterized in that the shape of the measuring pool (1) is square, and the bottom is arc-shaped. 6. The online measuring device for water quality monitoring electrodes according to claim 1, characterized in that four cleaning nozzles (3) are provided in total, and the two cleaning nozzles (3) on the upper layer are connected to the measuring pool (1) obliquely downward , the two cleaning nozzles (3) on the lower floor are connected to the measuring pool (1) obliquely upward. 7. The online measuring device for water quality monitoring electrodes according to claim 1, characterized in that the material of the measuring pool (1) is plastic, metal or glass. 8. The on-line measurement device with electrodes for water quality monitoring according to claim 1, characterized in that the electrodes (2) include one or more of pH electrodes, conductivity electrodes, dissolved oxygen electrodes, and turbidity electrodes.