CN211877844U

CN211877844U - Measuring tank for water quality detection

Info

Publication number: CN211877844U
Application number: CN202020577336.5U
Authority: CN
Inventors: 李闯; 郑雷玉; 高卫师; 陶金峰; 覃素安; 王丽轻
Original assignee: Guangxi Xiande Environmental Protection Technology Co ltd; Sichuan Jiuhuan Environmental Technology Co ltd; Hebei Xianhe Environmental Protection Technology Co ltd
Current assignee: Guangxi Xiande Environmental Protection Technology Co ltd; Sichuan Jiuhuan Environmental Technology Co ltd; Hebei Xianhe Environmental Protection Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-11-06
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a measuring pond for water quality testing, including barrel, agitator, measuring electrode, air inlet, the barrel top sets up the top cap of detachable level form, and the barrel bottom sets up the bottom of back taper, measuring electrode and agitator are installed on the top cap, at the top installation level sensor of barrel, the air inlet sets up at the barrel lateral wall and is located the well lower part of barrel, and the bottom of bottom sets up the water service mouth, lets in through the water service mouth and detects water sample and drainage. Adopt the measuring cell, when carrying out the drainage, can fully discharge the impurity of attaching to in the barrel, guarantee measured data's accuracy.

Description

Measuring tank for water quality detection

Technical Field

The utility model relates to a water quality testing equipment technical field, concretely relates to measuring pond for water quality testing.

Background

In the water quality detection work, electrode detection is a common technical means, and generally, electrodes are adopted to measure various conventional parameters such as PH, dissolved oxygen, conductivity and the like; particulate matters, organic matters and the like in a water sample can be attached to the surface of the measuring electrode and the inner wall of the measuring pool in the waiting measuring process, the attachment accumulation directly causes the drift of measuring data, and therefore, when raw water sample drainage is carried out before new sample collection is carried out on the measuring pool, the attached impurities on the surface of the electrode and the inner wall of the measuring pool need to be discharged as much as possible.

The existing water quality detection measuring pool is internally provided with a stirrer, when the measuring pool drains water, the water sample is stirred by starting the stirrer, so that the attachments on the surface of an electrode and the inner wall of the measuring pool are reduced, but the stirrer in the measuring pool is not arranged too low in position, too low in position and not in place for stirring the water sample at the position of the electrode, so that the stirrer is generally arranged in the middle of the stirring pool, but the stirrer is arranged in the middle, in the drainage process, when the water level is lower than the stirrer, the water sample cannot be stirred, and part of the attachments are attached to the bottom of the measuring pool, so that the measurement accuracy is influenced by accumulation of the attachments, and the accuracy of electrode measurement can be ensured by frequent maintenance.

Disclosure of Invention

The utility model aims at solving the defects of the prior art and provides a measuring tank for water quality detection.

The technical scheme of the utility model as follows:

a measuring pond for water quality testing, including barrel, agitator, measuring electrode, air inlet, the barrel top sets up the top cap of detachable level form, and the barrel bottom sets up the bottom of back taper, measuring electrode and agitator are installed on the top cap, at the top installation level sensor of barrel, the air inlet sets up at the barrel lateral wall and is located the well lower part of barrel, and the bottom of bottom sets up the water service mouth, lets in through the water service mouth and detects water sample and drainage.

The measuring electrodes comprise a PH electrode, a dissolved oxygen electrode, a conductivity electrode and a turbidity electrode.

The agitator is located the center of top cap, and the driving motor of agitator is located the top cap top.

The upper part of the side wall of the cylinder body is provided with an overflow port, the overflow port is positioned above the bottom end of the measuring electrode, and the middle part of the side wall of the cylinder body is sequentially provided with a water distribution port and a manual valve from top to bottom.

The beneficial effects of the utility model reside in that:

1. measuring cell, set up the agitator at the middle part of barrel and set up the air inlet in the barrel lower part, utilize the agitator to stir the water sample at the drainage initial stage and make the attachment break away from measuring electrode and barrel inner wall, adopt the method drainage to drum gas in the barrel after the water level is less than the air inlet, utilize the attachment that atmospheric pressure made the aquatic to discharge completely along with water, solved the agitator and set up the condition emergence that the drainage later stage that the position can not cross the low drainage later stage that causes can't accomplish complete stirring, the problem that the measuring cell top cap department spills over is blown to the water sample probably to the completely adopting the method of blowing simultaneously when measuring cell water is full.

2. Adopt the measuring cell, because the impurity in the drainage in-process can discharge the aquatic fully, can guarantee measured data's accuracy nature better, prolong the maintenance cycle of measuring cell greatly, prolong the life of electrode.

Drawings

Fig. 1 is a schematic diagram of the external structure of the measuring cell of the present invention;

fig. 2 is a cross-sectional view of the measuring cell of the present invention;

fig. 3 is a top view of the measuring cell of the present invention;

the numbers and corresponding structure names in the figure are as follows:

1-cylinder, 2-stirrer, 3-air inlet, 4-top cover, 5-bottom cover, 6-liquid level sensor, 7-water inlet, 8-PH electrode, 9-dissolved oxygen electrode, 10-conductivity electrode, 11-turbidity electrode, 12-driving motor, 13-water distribution port, 14-manual valve, 15-overflow port and 16-lifting lug.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The measuring tank for water quality detection shown in fig. 1-3 comprises a cylinder body 1, a stirrer 2, a measuring electrode and an air inlet 3, wherein the top of the cylinder body 1 is provided with a detachable horizontal top cover 4, the bottom of the cylinder body is provided with an inverted cone-shaped bottom cover 5, the measuring electrode and the stirrer 2 are installed on the top cover 4, the top of the cylinder body 1 is provided with a liquid level sensor 6, the air inlet 3 is arranged on the side wall of the cylinder body and is positioned at the middle lower part of the cylinder body, the bottom of the bottom cover 5 is provided with a water through opening 7, and a detection water sample and drainage are introduced through the water through.

The measuring electrodes comprise a PH electrode 8, a dissolved oxygen electrode 9, a conductivity electrode 10 and a turbidity electrode 11.

The stirrer 2 is positioned in the center of the top cover, and the driving motor 12 of the stirrer is positioned above the top cover 4.

The upper portion of the side wall of the cylinder body 1 is provided with an overflow port 15, the overflow port is located above the bottom end of the measuring electrode, the phenomenon that liquid level in the cylinder body overflows from a top cover due to overhigh liquid level is avoided, the middle portion of the side wall of the cylinder body 1 is sequentially provided with a water distribution port 13 and a manual valve 14 from top to bottom, and the manual valve is arranged to facilitate manual drainage on site or use when manual sampling is needed.

The working principle of the measuring cell is as follows:

the practical use method of the measuring tank of the utility model is discontinuous measurement, sampling is carried out according to the whole point, in order to truly and real-timely reflect the authenticity of the water quality parameters of the measured sample, the water sample is collected into the cylinder body, and the measured data is collected as soon as possible after the water sample is stabilized, the duration of the practical measuring process is very short, and after the measurement is finished, the measuring electrode needs to be soaked in the water sample to keep a live measuring state, and the next measurement is waited; particulate matters, organic matters and the like in the water sample can be attached to the surface of the measuring electrode and the inner wall of the cylinder in the waiting process, the attachment accumulation directly can cause the drift of measuring data, and therefore a stirrer needs to be arranged for stirring to avoid attachments on the electrode.

A stirrer 2 and a liquid level sensor 6 are arranged on a top cover 4 of a barrel 1, a gas inlet 3 is arranged at the lower part of the barrel 1, in actual use, the liquid level sensor 6 detects that water in the barrel reaches a preset liquid level, water delivery to a water through port 7 is stopped, after a water sample in the barrel 1 is stable, a data acquisition system starts to acquire and calculate data of a measuring electrode, after data acquisition is finished, a part of water is pumped out of the barrel through a water distribution port 13 and enters other measuring instruments to measure other parameters, meanwhile, water is supplemented to the barrel 1 through the water through port 7, a driving motor 12 is started to weakly stir the stirrer 2, the water supplement is to ensure that the measuring electrode is completely immersed in the sample water and keeps a live measuring state, the stirrer 2 performs weak stirring to ensure that the water sample in the barrel is always in a flowing state in the whole waiting process, and to minimize measuring power consumption, the weak agitation is intermittent agitation.

Before the barrel 1 starts a new sampling process, a water sample collected last time is discharged through the water through port 7, in order to ensure that adhesive substances in the original water sample can be completely discharged in the discharging process, in the initial stage of water discharging, the driving motor 12 is started to enable the stirrer 2 to carry out strong stirring, so that the adhesive substances in the water are completely suspended, the drainage pump is started to carry out water discharging, when the water sample in the measuring pool is discharged below the air inlet 3, the stirring process is stopped, the air inlet device is started to convey air to the air inlet 3, and the air in the air inlet 3 is blown into the barrel 1 until the water sample in the barrel is completely discharged; a level sensor I may be provided at the air inlet to send a signal to activate the air inlet when water in the cartridge is discharged to the air inlet.

Measuring cell, set up agitator 2 and set up air inlet 3 in the barrel lower part at the middle part of barrel, utilize agitator 2 to stir the water sample at the drainage initial stage and make the attachment break away from measuring electrode and barrel inner wall, adopt the method drainage to drum gas in the barrel after the water level is less than the air inlet, utilize the attachment that atmospheric pressure made the aquatic to discharge completely along with water, solved the agitator and set up the condition emergence that the drainage later stage that the position can not cross lowly cause can't accomplish complete stirring, the problem that measuring cell top cap department overflowed is blown to the water sample probably to the method of adopting blowing completely when measuring cell water is full has also been solved simultaneously.

Claims

1. A measuring cell for water quality testing, its characterized in that: including barrel (1), agitator (2), measuring electrode, air inlet (3), barrel (1) top sets up top cap (4) of detachable level form, and the barrel bottom sets up bottom (5) of back taper, measuring electrode and agitator (2) are installed on top cap (4), at top installation level sensor (6) of barrel (1), air inlet (3) set up at the barrel lateral wall and are located the well lower part of barrel, and the bottom of bottom (5) sets up water service mouth (7), lets in through water service mouth (7) and detects water sample and drainage.

2. A measuring cell for water quality detection as defined in claim 1, wherein: the measuring electrodes comprise a PH electrode (8), a dissolved oxygen electrode (9), a conductivity electrode (10) and a turbidity electrode (11).

3. A measuring cell for water quality detection as defined in claim 1, wherein: the stirrer (2) is positioned in the center of the top cover, and a driving motor (12) of the stirrer is positioned above the top cover (4).

4. A measuring cell for water quality detection as defined in claim 1, wherein: an overflow port (15) is arranged on the upper portion of the side wall of the cylinder body (1), the overflow port is located above the bottom end of the measuring electrode, and a water distribution port (13) and a manual valve (14) are sequentially arranged in the middle of the side wall of the cylinder body (1) from top to bottom.