CN218455699U - A add mark recovery unit for water quality monitoring - Google Patents

Abstract

The utility model relates to a add mark and retrieve subassembly for water quality monitoring, including placing mother liquor cup and the ration cup in the standard liquid refrigerator, ration cupular part is connected with into appearance pipe, is connected to water quality analyzer's supply appearance pipe and is connected to the standard liquid pipe of mother liquor cup, be equipped with the constant delivery pump on the mother liquor cup, and ration cup lateral wall sub-unit connection has the gas blow pipe, and constant volume mouth has been seted up on ration cup lateral wall upper portion, and ration cupular part bottom is connected with the evacuation pipe. The utility model is used for water quality monitoring adds mark recovery subassembly novel structure, reasonable in design adopts the constant delivery pump directly to change the method that adds the mark volume to realize developments and add the mark, can reduce the automatic error that joins in marriage the mark and bring of scene like this, for high concentration mark liquid provides the environment of a lower temperature, has prolonged the shelf life of liquid, and the staff need not frequent change, can effectively improve the save time of mark liquid.

Description

A add mark recovery unit for water quality monitoring

Technical Field

The utility model relates to a quality of water environmental monitoring field, especially a add mark recovery unit for water quality monitoring.

Background

In the process of water quality monitoring, if the variation of measured values at different moments is large, a superior management platform cannot judge whether the variation is caused by the influence of external conditions or the self problem of a water quality analyzer or the water quality is changed greatly, if the variation needs to be verified, a water sample measured on site must be obtained for standard adding analysis and comparison, manual sampling standard adding comparison or remote automatic sampling standard adding comparison can be carried out, and the equipment for remote automatic sampling standard adding comparison and supplying to the water quality analyzer for measurement is a remote automatic quality control instrument; when the quality control instrument carries out the standard adding recovery detection, the amount of added substances (namely the standard adding amount) needs to be dynamically changed according to the difference of the concentrations of the substances contained in the water sample on site; the quality control instrument can realize remote quality control of water quality monitoring data, ensure that a monitoring result can be verified, and ensure that the whole water quality monitoring system can improve the discrimination of data validity through the remote automatic quality control instrument, thereby really knowing the water quality condition on site.

1) A part of the quality control instrument at the present stage adopts a combination of a multi-channel switching valve and a metering peristaltic pump to realize the metering and transmission of a water sample and a standard solution, the metering peristaltic pump uses rollers to clamp a section of liquid in a pump pipe, the liquid is pushed to one end, the rollers roll continuously and repeatedly, continuous liquid flows to one end, and the amount of the liquid flowing through the peristaltic pump pipe is metered according to the pipe diameter of the peristaltic pump pipe and the timing. In addition, the other part adopts the combination of a multi-channel switching valve and a plunger pump to realize the metering and transmission of the water sample and the standard solution, the plunger pump is like a syringe, a piston is arranged in the plunger pump, the piston is driven by a stepping motor to suck the liquid into the syringe of the plunger pump, and then the liquid is pushed into a sample preparation cup by the piston, in the process, the liquid can flow through the syringe of the plunger pump and is contacted with the piston, the metering precision of the metering peristaltic pump is poor, and the problems of the elasticity change, the gradual abrasion, the aging and the like of a peristaltic pump tube can aggravate the reduction of the metering accuracy of the peristaltic pump tube along with the use time, so that the accuracy of a scalar quantity is lower in the process of adding and recycling the scalar quantity.

2) In the existing quality control instrument, one sample preparation cup and four mother solution cups are used for preparing standard solutions of four different substances in different time periods and then are respectively stored in the four standard sample cups, one quality control instrument is matched with four water quality analyzers for use, the number of pipelines is large and complex, cross contamination is particularly easy to generate, many steps cannot be carried out simultaneously, the sample supply period is long, and the actual use condition of the water quality analyzer is not matched; when the same sample preparation cup is used for preparing standard solutions of four different substances at different time intervals, residues of sample preparation at the last time must exist in the sample preparation cup, the sample preparation cup cannot be completely cleaned even if being cleaned by pure water, and particularly, when an ammonia nitrogen solution and a total nitrogen solution are prepared, the residues can directly influence the concentration of the prepared standard solution, so that the concentration of the prepared standard solution is inaccurate. When one quality control instrument is matched with four water quality analyzers for use, the pipelines are more, the complexity is high, cross contamination is easy to generate, and water and electricity separation is difficult to make.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a add mark recovery unit for water quality monitoring reduces the on-the-spot error that the automatic mark brought of joining in marriage, for high concentration mark liquid provides the environment of a lower temperature, can effectively improve the save time of mark liquid.

The utility model discloses a following scheme realizes: the utility model provides a add mark and retrieve subassembly for water quality monitoring, is including placing mother liquor cup and the quantitative cup in the mark liquid refrigerator, quantitative cup top is connected with into appearance pipe, is connected to water quality analyzer's supply appearance pipe and is connected to the mark liquid pipe of mother liquor cup, be equipped with the constant delivery pump on the mother liquor cup, quantitative cup lateral wall sub-unit connection has the gas blow pipe, and the constant volume mouth has been seted up on quantitative cup lateral wall upper portion, and quantitative cup bottom is connected with the evacuation pipe.

Furthermore, an emptying valve is arranged on the emptying pipe, a constant volume opening of the constant volume cup is connected with a constant volume pump through a constant volume liquid discharge pipe, and an air pump is connected to the air blowing pipe.

Furthermore, a sample injection valve is connected to the sample injection pipe.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model is used for water quality monitoring adds mark recovery subassembly novel structure, reasonable in design adopts the constant delivery pump directly to change the method that adds the mark volume to realize developments and add the mark, can reduce the automatic error that joins in marriage the mark and bring of scene like this, for high concentration mark liquid provides the environment of a lower temperature, has prolonged the shelf life of liquid, and the staff need not frequent change, can effectively improve the save time of mark liquid.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and related drawings.

Drawings

FIG. 1 is a schematic diagram of the construction of an embodiment of the present invention;

the reference numbers in the figures illustrate: 1-quantitative cup, 2-sample introduction valve, 3-emptying valve, 4-air pump, 5-mother liquor cup and 6-quantitative pump.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in figure 1, a add mark recovery unit for water quality monitoring, including placing mother liquor cup 5 and quantitative cup 1 in the mark liquid refrigerator, mother liquor cup 5 is used for depositing high concentration mark liquid, quantitative cup 1 top is connected with into appearance pipe, is connected to water quality analyzer's supply appearance pipe and is connected to the mark liquid pipe of mother liquor cup, be equipped with constant delivery pump 6 on the mother liquor cup, quantitative cup lateral wall sub-unit connection has the gas blow pipe, and constant volume mouth has been seted up on quantitative cup lateral wall upper portion, and quantitative cup bottom is connected with the evacuation pipe.

The mark adding recovery components for water quality monitoring can be used by matching with a water quality analyzer, and adopt a high-precision constant delivery pump 6 to realize the transmission and metering of a standard solution, wherein the injection amount of the constant delivery pump is 100uL each time, the accuracy of the solution amount is less than 1%, and the precision is very high; the high-concentration standard solution 5 is matched, when the standard is added and recovered, the quantitative pump absorbs the high-concentration standard solution and injects the high-concentration standard solution into the quantitative cup 1 to be mixed with a water sample, and the amount X (unit 100 uL) of the high-concentration standard solution can be modified through the upper computer, so that the dynamic standard addition can be realized according to the dynamic setting of the concentration of the water sample on site, and the method that the quantitative pump directly changes the standard addition volume is adopted, so that the error caused by the automatic standard preparation on site can be reduced.

The mother liquid cup 1 is placed in a standard liquid refrigerator, so that the liquid in the cup can be kept at 5-10 ℃, the quality guarantee period of the liquid is prolonged, workers do not need to frequently replace the mother liquid cup, a lower-temperature environment is provided for high-concentration standard liquid, and the storage time of the standard liquid can be effectively prolonged.

In this embodiment, the emptying valve 3 is arranged on the emptying pipe, the constant volume port of the quantitative cup 1 is connected with a constant volume pump 7 through a constant volume liquid discharge pipe, and the air blowing pipe is connected with an air pump 4; the air pump 5 is adopted to blow air in the quantitative cup 1 for adding the standard liquid and recycling the standard liquid, bubbles are used for stirring to enable the added standard liquid and the water sample to be uniformly mixed, the air output of the small air pump 5 is suitable, and the air blowing time can be set on an upper computer.

In this embodiment, the sample inlet pipe is connected with a sample inlet valve 2.

In this embodiment, still include the online quality control appearance of quality of water, the online quality control appearance of quality of water is connected with injection valve, blowoff valve, air pump and dosing pump, and the online quality control appearance of quality of water can long-rangely automatically provide water sample and add the standard and mix the appearance for the water quality analysis appearance is measured to can be according to on-the-spot water sample concentration, through host computer setting, the dynamic adjustment adds the size of scale in certain extent.

The utility model is used for water quality monitoring's the work process of retrieving the subassembly with marking:

1) When water sample measurement needs to be carried out, the quality control instrument receives a corresponding instruction: firstly, opening an emptying valve 3 of a quality control instrument, emptying a last water sample in a sampling cup, then starting a sample injection pump 2 of the quality control instrument to extract a water sample to be measured from a flow cell to a quantifying cup 1, rinsing the water sample with the water sample for a period of time, then closing an emptying valve 4 of the quality control instrument, storing the water sample in the sampling cup 1, stopping the sample injection pump 2 when the water level of the quantifying cup is close to an overflow port, and extracting the water sample by the instrument to measure.

2) When need to examine whether instrument water sample measured value deviation is too big, need carry out the test of retrieving of adding the mark: firstly, the adding and recycling assembly runs through the flow in the step 1), the constant volume pump 7 is started, the constant volume pump 7 is stopped after the water sample in the constant volume cup is discharged, the constant volume pump 6 is started, the high-concentration standard solution in the mother solution cup 5 is injected into the constant volume cup, then the air pump 4 is started, the water sample and the high-concentration standard solution are uniformly mixed by air bubbles, the air pump is closed, and finally the instrument extracts the mixed sample for measurement.

In addition to other claims, if a numerical range is disclosed, the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.

The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other has declared, fixed connection can understand: a detachable fixed connection (for example using a bolt or screw connection) can also be understood as: non-detachable fixed connections (e.g. riveting, welding) can, of course, also be replaced by one-piece structures (e.g. manufactured in one piece using a casting process) (unless it is obvious that one-piece processes cannot be used).

In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.

The utility model provides an arbitrary part both can be formed by a plurality of solitary component parts equipment, also can be for the solitary part that the integrated into one piece technology made out.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (3)

1. The utility model provides a add mark recovery unit for water quality monitoring which characterized in that: including placing mother liquor cup and the ration cup in the standard solution refrigerator, ration cup top is connected with into appearance pipe, is connected to water quality analyzer's confession appearance pipe and is connected to the standard solution pipe of mother liquor cup, be equipped with the constant delivery pump on the mother liquor cup, ration cup lateral wall sub-unit connection has the gas blow pipe, and the constant volume mouth has been seted up on ration cup lateral wall upper portion, and ration cup bottom is connected with the evacuation pipe.

2. The tagged recovery assembly for water quality monitoring of claim 1, wherein: the air blowing device is characterized in that an emptying valve is arranged on the emptying pipe, a constant volume port of the constant volume cup is connected with a constant volume pump through a constant volume liquid discharge pipe, and an air pump is connected to the air blowing pipe.

3. The tagged recovery assembly for water quality monitoring of claim 1, wherein: and the sample inlet pipe is connected with a sample inlet valve.

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