CN209992374U

CN209992374U - Water quality alkalinity on-line monitoring instrument

Info

Publication number: CN209992374U
Application number: CN201920419046.5U
Authority: CN
Inventors: 王磊
Original assignee: HANGZHOU MODI TECHNOLOGY Co Ltd
Current assignee: HANGZHOU MODI TECHNOLOGY Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-01-24
Anticipated expiration: 2029-03-29

Abstract

The utility model discloses a water quality alkalinity on-line monitoring instrument, which comprises an embedded control system, a quantitative system, a multi-channel system, a driving system and a detection system, wherein the quantitative system comprises a plurality of quantitative chambers for quantifying a water sample to be detected and various detection reagents, each quantitative chamber is communicated with the detection system through the multi-channel system, a control program is preset in the embedded control system for controlling the operation of the driving system, the quantitative system and the detection system, the detection system comprises a detection light source and a light detector for detecting the color change of the water sample to be detected, after the quantitative sampling of the driving system and the quantitative system, the water sample to be detected enters the detection system through the multi-channel system, the color change occurs after the detection system and other reagents have acid-base reaction, and the on-line alkalinity monitoring is realized through the optical signal detection of the detection system. The monitor can carry out on-line detection on the alkalinity of water quality, and has low production and use cost.

Description

Water quality alkalinity on-line monitoring instrument

Technical Field

The utility model relates to a water quality monitoring equipment field, more specifically the water quality alkalinity on-line monitoring appearance that says so relates to a.

Background

Alkalinity refers to the total amount of substances capable of neutralizing strong acids in water, i.e., the amount of substances that can accept hydrogen ions, and the actual sources are various, such as hydroxide, carbonate, bicarbonate, phosphate, silicate, sulfite, nitrogen, etc., which are common alkaline substances in water, and all of which can react with acids. The alkalinity of natural water is caused primarily by bicarbonates, also known as bicarbonates, carbonates and hydroxides, which are the predominant form of alkalinity in water. The main alkalinity-causing pollution sources are waste water discharged from industries such as papermaking, printing and dyeing, chemical industry, electroplating and the like, and loss of detergents, fertilizers and pesticides in the using process. The alkalinity is an important index for judging water quality and controlling wastewater treatment in the industrial production process. Alkalinity is also commonly used to assess the buffering capacity of a body of water, and the solubility and toxicity of metals therein, among others. The alkalinity of water quality in the breeding industry is an extremely important water quality index, and is directly related to the survival rate and the yield of shrimps and crabs. More used in the actual production life is the definition of total alkalinity, which is generally characterized by a concentration value corresponding to calcium carbonate.

The standard measurement method of alkalinity is an acid-base indicator titration method, the standard method is that laboratory manual sampling measurement is adopted, at present, users who adopt full-automatic real-time online monitoring are few, the main reason is that the number of suppliers of the alkalinity online monitor which can realize automatic online measurement is few, even if users use an online alkalinity automatic analyzer, the price of the online monitor is expensive because a pH electrode in acid-base titration is adopted to judge a titration end point in the use process, the use cost is high because the electrode needs to be replaced in the use process in the future, the mature product of the alkalinity online monitor which adopts an optical method to judge the titration end point at present does not exist, and the technology and the quality have great difference compared with foreign countries.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a quality of water basicity on-line monitoring appearance, this monitor can carry out on-line measuring to quality of water basicity, and production and use cost are low.

In order to achieve the above purpose, the utility model provides a following technical scheme: an on-line monitor for water alkalinity comprises an embedded control system, a quantitative system, a multi-channel system, a driving system for driving the delivery of a water sample to be detected and a detection reagent, and a detection system for detecting the water alkalinity, the quantitative system comprises a plurality of quantitative chambers for quantifying a water sample to be detected and various detection reagents, each quantitative chamber is communicated with the detection system through a multi-channel system, the embedded control system is internally provided with a control program for controlling the work of the driving system, the quantitative system and the detection system, the detection system comprises a detection light source and a light detector for detecting the color change of the water sample to be detected, after the quantitative sampling of the driving system and the quantitative system, the water sample to be detected enters the detection system through the multi-channel system, the color change occurs after the detection system and other reagents have acid-base reaction, and the on-line alkalinity monitoring is realized through the optical signal detection of the detection system.

As a further improvement, the ration room is including the sealed box of making by the printing opacity material and set up the position sensor on the box, the equal sealed setting of formation and ration room is cut apart with the box to the printing opacity baffle of quantitative room by vertical setting, the indoor equal vertical guide rail that is provided with of ration, sliding connection has the kicking block on the guide rail, all can trigger position sensor under the kicking block rising state, and the ratio of the cross-sectional area of each ration room keeps unanimous with the required mixing proportion of the indoor liquid of each ration.

As a further improvement, the ration room is provided with five, is used for detecting required first standard liquid, second standard liquid, first reagent, second reagent and the water sample that awaits measuring and carrying out the ration respectively to quality of water basicity, multichannel system switches on with corresponding first standard liquid case, second standard liquid case, first reagent case, second reagent case or the water sample pond that awaits measuring through five sampling pipe ways and five detection pipe ways including five sampling pipe ways, each ration room lower extreme, just all be provided with the first check valve of avoiding the indoor liquid reflux of ration on the sampling pipe way, and each ration room lower extreme all switches on with detecting system through a detection pipe way, all is provided with the second check valve of avoiding the interior liquid reflux of detecting system on each detection pipe way.

As a further improvement, the drive system includes the sampling pump, the house steward that is connected with the sampling pump and the branch pipe of being connected with each ration room, the sampling pump is peristaltic pump or syringe pump, the branch pipe all switches on mutually with the house steward, just all be provided with the first solenoid valve that the alternative was opened and close on the branch pipe.

As the utility model discloses a further improvement, detecting system is still including the reaction tank of making by the printing opacity material and be used for the fixed block of fixed reaction tank, the testing light source sets up respectively in the relative both sides of reaction tank with photo detector, the reaction tank lower extreme is connected with a waste liquid collecting box through a waste liquid pipeline, the waste liquid pipeline is provided with the second solenoid valve that alternative was opened and close on the road.

The utility model has the advantages that: through the arrangement of the embedded control system, the quantitative system, the multi-channel system, the driving system and the detection system, the detector can realize the on-line monitoring of the alkalinity of water quality, and an ion selective electrode is not needed in the detection process, so that the production and use cost of the monitor is low. The waste liquid collecting box enables waste liquid generated after detection to be collected and then processed in a centralized mode, and environmental pollution is avoided. The setting of a plurality of ration rooms makes water sample and various detect reagent all have respective independent ration space to be measured, can not mutual interference each other, therefore monitoring accuracy is high, and the monitoring result is accurate.

Drawings

FIG. 1 is a schematic structural diagram of an online monitor for water alkalinity;

fig. 2 is a schematic diagram of a water alkalinity on-line monitor.

Reference numerals: 1. an embedded control system; 2. a dosing system; 21. a dosing chamber; 211. a guide rail; 212. Floating blocks; 22. a box body; 23. a position sensor; 3. a multi-channel system; 31. a sampling pipeline; 311. a first check valve; 32. detecting a pipeline; 321. a second one-way valve; 33. a first standard liquid tank; 34. a second standard liquid tank; 35. a first reagent tank; 36. a second reagent tank; 37. a water sample pool to be detected; 4. a drive system; 41. A sampling pump; 42. a header pipe; 43. a branch pipe; 431. a first solenoid valve; 5. a detection system; 51. detecting a light source; 52. a photodetector; 53. a reaction tank; 54. a fixed block; 55. a waste liquid line; 551. a second solenoid valve; 56. and a waste liquid collecting box.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 2, an online monitor for water alkalinity of the present embodiment includes an embedded control system 1, a quantitative system 2, a multi-channel system 3, a driving system 4 for driving a water sample to be detected and conveying a detection reagent, and a detection system 5 for detecting water alkalinity, the quantitative system 2 includes a plurality of quantitative chambers 21 for quantifying the water sample to be detected and various detection reagents, each quantitative chamber 21 is connected with the detection system 5 through the multi-channel system 3, a control program is preset in the embedded control system 1 for controlling the driving system 4, the quantitative system 2 and the detection system 5 to operate, the detection system 5 includes a detection light source 51 and a light detector 52 for detecting color changes of the water sample to be detected, the driving system 4 drives the water sample to be detected and the detection reagent to enter each quantitative chamber 21 for quantification, and then enters the detection system 5 through the multi-channel system 3, the water sample to be detected in the detection system 5 is subjected to acid-base reaction with other reagents, then color change occurs, and the on-line alkalinity monitoring is realized through the optical signal detection of the detection system 5. And a pH electrode is not needed in the detection process, so that the production and use costs of the monitor are low. And the setting of a plurality of ration rooms 21 makes the water sample that awaits measuring and various detect reagent all have respective independent ration space, can not mutual interference each other, therefore monitoring accuracy is high, and monitoring result is accurate.

As an improved specific embodiment, the quantitative chamber 21 includes a sealed box 22 made of a light-transmitting material and a position sensor 23 disposed on the box 22, the quantitative chamber 21 is formed by dividing the box 22 by a vertically disposed light-transmitting partition, the quantitative chamber 21 is disposed in a sealed manner, guide rails 211 are vertically disposed in the quantitative chamber 21, floating blocks 212 are slidably connected to the guide rails 211, the position sensor 23 is triggered when the floating blocks 212 are in a rising state, and the ratio of the cross-sectional areas of the quantitative chambers 21 is consistent with the required mixing ratio of the solutions in the quantitative chambers 21. Position sensor 23 all can adopt photoelectric sensor, and when letting in the water sample or the detect reagent that await measuring in the ration room 21, floating block 212 rises along guide rail 211, will trigger photoelectric sensor when floating block 212 rises to setting for the position, and photoelectric sensor and embedded control system 1 signal connection to realize the ration of water sample and detect reagent that await measuring, this ration simple structure is practical, full automatic operation, and degree of mechanization is high.

As an improved specific embodiment, the number of the quantifying chambers 21 is five, and the quantifying chambers 21 are respectively used for quantifying a first standard solution, a second standard solution, a first reagent, a second reagent and a water sample to be detected, which are required for detecting alkalinity of water quality, the multichannel system 3 includes five sampling pipelines 31 and five detection pipelines 32, the lower end of each quantifying chamber 21 is communicated with a corresponding first standard solution tank 33, a corresponding second standard solution tank 34, a corresponding first reagent tank 35, a corresponding second reagent tank 36 or a water sample pool 37 to be detected through one sampling pipeline 31, the sampling pipeline 31 is provided with a first one-way valve 311 for avoiding backflow of liquid in the quantifying chamber 21, the lower end of each quantifying chamber 21 is communicated with the detection system 5 through one detection pipeline 32, and each detection pipeline 32 is provided with a second one-way valve 321 for avoiding backflow of liquid in the detection system 5. The driving system 4 comprises a sampling pump 41, a manifold 42 connected with the sampling pump 41 and branch pipes 43 connected with each quantitative chamber 21, wherein the sampling pump 41 is a peristaltic pump or a syringe pump, can rotate forwards and backwards and can generate negative pressure or positive pressure in the quantitative chamber 21; the branch pipes 43 are communicated with the main pipe 42, and the branch pipes 43 are provided with first electromagnetic valves 431 which can be selectively opened and closed. Opening and close of first solenoid valve 431 is controlled by embedded control system 1, carry out ration room 21 to a liquid as required, open corresponding first solenoid valve 431, other first solenoid valves 431 close, start sampling pump 41 and make the ration room 21 that corresponds produce the negative pressure, liquid will enter into ration room 21 through sampling pipe 31 in, sampling pump 41 produces the malleation after accomplishing the ration and makes liquid enter into detecting system 5 through detecting pipeline 32 in, then carry out the ration to another liquid again through opening and close first solenoid valve 431, this ration and liquid transport simple structure, therefore, the clothes hanger is strong in practicability.

As an improved specific embodiment, the detection system 5 further includes a reaction tank 53 made of a light-transmitting material and a fixing block 54 for fixing the reaction tank 53, the detection light source 51 and the light detector 52 are respectively disposed at two opposite sides of the reaction tank 53, the lower end of the reaction tank 53 is connected to a waste liquid collecting box 56 through a waste liquid pipeline 55, and the waste liquid pipeline 55 is provided with a second electromagnetic valve 551 capable of being selectively opened and closed. The detection pipelines 32 are all communicated with the reaction tank 53, the opening and closing of the second electromagnetic valve 551 are controlled by the embedded control system 1, and after the detection of the detection system 5 is finished, the embedded control system 1 opens the second electromagnetic valve 551 to discharge the waste liquid into the waste liquid collection box 56, so that the environment pollution is avoided.

The working principle is as follows:

before detecting an actual water sample, the first standard solution and the second standard solution are respectively used for replacing the water sample to carry out measurement and are used for calculating a correction coefficient. A correction step: the embedded control system 1 first controls the first solenoid valve 431 branched above the quantifying chamber 21 for quantifying the first standard liquid to be opened, the other first electromagnetic valves 431 are closed, the sampling pump 41 is started to enable the quantitative chamber 21 to generate negative pressure, the first standard liquid enters the quantitative chamber 21 through the sampling pipeline 31, the position sensor 23 is triggered when the floating block 212 in the quantitative chamber 21 rises to a set position, the position sensor 23 is in signal connection with the embedded control system 1, the embedded control system 1 controls the sampling pump 41 to generate positive pressure, so that the first standard solution enters the reaction tank 53 through the detection pipeline 32, at this time, optical detection is performed, the detection coefficient is corrected for the first time based on the optical signal received by the optical detector 52, and after the detection of the first standard solution is completed, the second solenoid valve 551 is opened for a short time so that the first standard liquid flows into the waste liquid collection tank 56, and then the second solenoid valve 551 is closed. Then, the first solenoid valve 431 branched from the upper side of the quantifying chamber 21 for quantifying the first standard solution is closed, the first solenoid valve 431 branched from the upper side of the quantifying chamber 21 for quantifying the second standard solution is opened, the second standard solution is optically detected and the detection coefficient is corrected for the second time in the same manner, and the second standard solution is also introduced into the waste liquid collecting tank 56 after the correction is completed, and at this time, the correction coefficient step is completed and the first solenoid valve 431 is closed. Then, the first solenoid valve 431 of the branch pipe above the quantifying chamber 21 for quantifying the water sample to be tested is opened, the water sample to be tested is quantified by the same method, the water sample to be tested enters the reaction tank, then the first reagent and the second reagent are sequentially pressed into the reaction tank 53 by the same method, the water sample to be tested, the first reagent and the second reagent are subjected to acid-base reaction in the reaction tank 53 and color change, optical detection is performed after the reaction is completed, the alkalinity content in water is measured according to the optical signal received by the optical detector 52, after the detection is completed, the second solenoid valve 551 is opened, and the liquid in the reaction tank 53 flows into the waste liquid collecting tank 56. The detector can realize the on-line monitoring of the alkalinity of water quality, and an ion selective electrode is not needed in the detection process, so the production and use cost of the monitor is low. The waste liquid collecting box 56 can collect and centralize the waste liquid generated after detection, thereby avoiding environmental pollution. The setting of a plurality of ration rooms 21 makes water sample and various detect reagent all have respective independent ration space to be measured, can not mutual interference each other, therefore monitoring accuracy is high, and monitoring result is accurate.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a water quality basicity on-line monitoring appearance which characterized in that: including embedded control system (1), ration system (2), multichannel system (3), be used for driving actuating system (4) that water sample and detection reagent to be measured carried and be used for detecting the detecting system (5) of quality of water basicity, ration system (2) is including being used for a plurality of ration rooms (21) to the water sample and the ration of various detection reagent to be measured, all switches on mutually through multichannel system (3) between each ration room (21) and detecting system (5), control program is predetermine in embedded control system (1), control actuating system (4), ration system (2) and detecting system (5) work, detecting system (5) is including being used for detecting the measuring light source (51) and the photo detector (52) of the colour change of water sample to be measured, behind actuating system (4) and the ration system (2) quantitative sampling, a water sample to be detected enters the detection system (5) through the multi-channel system (3), and undergoes color change after the detection system (5) and other reagents undergo acid-base reaction, and the alkalinity is monitored on line through optical signal detection of the detection system (5).

2. The water quality alkalinity on-line monitor according to claim 1, which is characterized in that: quantitative room (21) including sealed box (22) made by the printing opacity material and set up position sensor (23) on box (22), quantitative room (21) are cut apart box (22) by the printing opacity baffle of vertical setting and are formed and quantitative room (21) all seal the setting, equal vertical guide rail (211) that is provided with in quantitative room (21), sliding connection has floater (212) on guide rail (211), floater (212) all can trigger position sensor (23) under the rising state, and the ratio of the cross-sectional area of each quantitative room (21) keeps unanimous with the required proportion of mixing of liquid in each quantitative room (21).

3. The water quality alkalinity on-line monitor according to claim 2, wherein: five quantitative chambers (21) are arranged and are respectively used for quantifying a first standard solution, a second standard solution, a first reagent, a second reagent and a water sample to be detected, which are required by the detection of the alkalinity of the water quality, the multi-channel system (3) comprises five sampling pipelines (31) and five detection pipelines (32), the lower end of each quantitative chamber (21) is communicated with a corresponding first standard liquid box (33), a corresponding second standard liquid box (34), a corresponding first reagent box (35), a corresponding second reagent box (36) or a water sample pool (37) to be detected through one sampling pipeline (31), and all be provided with first check valve (311) of avoiding liquid backward flow in ration room (21) on sample pipeline (31), each ration room (21) lower extreme all switches on with detecting system (5) through one detection pipeline (32), all is provided with second check valve (321) of avoiding liquid backward flow in detecting system (5) on each detection pipeline (32).

4. The water quality alkalinity on-line monitor according to claim 3, wherein: the drive system (4) is including sampling pump (41), house steward (42) be connected with sampling pump (41) and branch pipe (43) be connected with each ration room (21), sampling pump (41) are peristaltic pump or syringe pump, branch pipe (43) all lead to mutually with house steward (42), just all be provided with first solenoid valve (431) that selectively opened and close on branch pipe (43).

5. The water quality alkalinity on-line monitor according to claim 1, which is characterized in that: the detection system (5) further comprises a reaction tank (53) made of light-transmitting materials and a fixing block (54) used for fixing the reaction tank (53), the detection light source (51) and the light detector (52) are respectively arranged on two opposite sides of the reaction tank (53), the lower end of the reaction tank (53) is connected with a waste liquid collecting box (56) through a waste liquid pipeline (55), and a second electromagnetic valve (551) capable of being selectively opened and closed is arranged on the waste liquid pipeline (55).