CN218470696U - Dynamic standard-matching quality control instrument - Google Patents

Abstract

The utility model relates to a developments are joined in marriage standard matter and are controlled appearance, including the mark fluid reservoir, join in marriage a kind cup, appearance drinking cup and water quality analyzer, join in marriage a kind cup and a kind drinking cup top and do not be connected with the confession appearance pipe that leads to water quality analyzer, join in marriage a kind cup and a kind drinking cup top and still be connected with into the appearance pipe respectively, join in marriage a kind cupular part and be connected with the pure water pipe and be connected to the mark liquid pipe of mark fluid reservoir, be equipped with the plunger pump on the mark liquid pipe, join in marriage a kind cup lateral wall sub-unit connection and have the gas blow pipe, join in marriage a kind cup lateral wall upper portion and seted up the constant volume mouth, join in marriage a kind cup and a kind drinking cup bottom and do not be connected with the evacuation pipe. The utility model discloses dynamic standard matching quality control instrument novel structure, reasonable in design, adopt the method that the plunger pump directly changes the standard volume to realize dynamic standard adding, can reduce the error that the on-the-spot manual standard matching brought like this; the sample water detection and other working processes are separately carried out in the sample water cup and the sample preparation cup, so that the sample water is prevented from remaining dirt in the cup wall, and the precision of the quality control instrument is ensured.

Description

Dynamic standard-matching quality control instrument

Technical Field

The utility model relates to a quality of water environmental monitoring field, especially a developments join in marriage standard matter accuse appearance.

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 measured values are caused by the influence of external conditions or the self problems of a water quality analyzer or the water quality is changed greatly, if verification is required, a water sample measured on site must be obtained for benchmarking analysis and comparison, manual sampling and benchmarking comparison or remote automatic sampling and benchmarking comparison can be carried out, and equipment for measuring the water quality analyzer by the remote automatic sampling and benchmarking comparison 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 field water quality condition.

1) The quality control instrument at the present stage is partially combined by adopting 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 clamps a section of liquid in a pump pipe by using rollers, 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; the measurement precision of measurement peristaltic pump is relatively poor, and along with the live time passes, peristaltic pump pipe elasticity changes moreover, and wearing and tearing gradually, ageing scheduling problem can aggravate and reduce its accuracy of measurement to make in the recovery process of adding the mark, add the accuracy of scalar and be lower.

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 intervals and then are respectively stored in the four standard sample cups, one quality control instrument is matched with the 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 dynamic standard preparation and sample supply period is long, and the actual service condition of the water quality analyzer on site is not matched.

3) In the quality control instrument at the present stage, functions of adding and recycling the standard, checking the standard liquid, detecting the sample water and the like are all placed in the same sample preparation cup, and after the quality control instrument is used for a long time, a large amount of dirt is left in the sample preparation cup by the sample water, so that the test precision of the functions of checking the standard liquid, checking the zero standard and the like is influenced.

4) The standard liquid checking function of the quality control instrument at the present stage can only be manually providing one or more concentrations of standard liquid, the quality control instrument switches the sample supply valve to supply sample to the instrument, and the standard liquid needs to be configured and replaced frequently by workers, which wastes time and labor; the standard adding and recycling function can only add standard liquid with a set volume for mixing, and the standard of standard adding and recycling cannot be met when the concentration of sample water becomes high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a developments are joined in marriage standard matter and are controlled appearance reduces the artifical error of joining in marriage the standard and bring in the scene, has avoided appearance water to leave the dirt in the cup wall, guarantees the precision of matter accuse appearance.

The utility model discloses a following scheme realizes: the utility model provides a developments are joined in marriage standard matter and are controlled appearance, includes the mark fluid reservoir, joins in marriage sample cup, appearance drinking cup and water quality analyzer, join in marriage sample cup and sample drinking cup top and do not be connected with the confession appearance pipe to water quality analyzer, join in marriage sample cup and sample drinking cup top and still be connected with into the appearance pipe respectively, join in marriage sample cup top and be connected with the pure water pipe and be connected to the mark fluid reservoir's mark liquid pipe, being equipped with the plunger pump on the mark liquid pipe, joining in marriage sample cup lateral wall sub-unit connection and have the gas blow pipe, joining in marriage sample cup lateral wall upper portion and have seted up the constant volume mouth, join in marriage sample cup and sample drinking cup bottom and do not be connected with the evacuation pipe.

Furthermore, overflow ports are formed in the upper parts of the side parts of the sample preparation cup and the sample water cup, and the overflow ports are connected with overflow pipes; the constant volume port of the sample preparation cup is connected with a constant volume pump through a constant volume liquid discharge pipe, and the air blowing pipe is connected with an air pump.

Furthermore, the sample inlet pipes at the tops of the sample preparation cup and the sample water cup are connected with a sample inlet main pipe through a three-way sample water valve, and the sample inlet main pipe is connected with a sample inlet pump; the pure water pipe is connected with a pure water pump.

Furthermore, a sample supply valve is arranged on the sample supply pipe, and an exhaust valve is arranged on the exhaust pipe.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses dynamic standard matching quality control instrument novel structure, reasonable in design, adopt the method that the plunger pump directly changes the standard volume to realize dynamic standard adding, can reduce the error that the on-the-spot manual standard matching brought like this; the sample water detection and other working processes are separately carried out in the sample water cup and the sample preparation cup, so that the sample water is prevented from remaining dirt in the cup wall, and the precision of the quality control instrument is ensured.

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-sample preparation cup, 2-sample cup, 3-sample injection pump, 4-pure water pump, 5-three-way sample water valve, 6-emptying valve B, 7-constant volume pump, 8-air pump, 9-emptying valve A, 10-standard liquid tank, 11-plunger pump, 12-sample supply valve A, 13-sample supply valve B and 14-sample supply valve C.

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 developments are joined in marriage standard quality and are controlled appearance, including the mark fluid reservoir 10, join in marriage a kind cup 1, a kind cup 2 and water quality analyzer, join in marriage a kind cup 1 and a kind cup 2 top and be connected with the confession appearance pipe to water quality analyzer respectively, join in marriage a kind cup and a kind cup top and still be connected with into the appearance pipe respectively, join in marriage a kind cup top and be connected with the pure water pipe and be connected to the mark fluid pipe of mark fluid reservoir, be equipped with plunger pump 11 on the mark fluid pipe, join in marriage a kind cup lateral wall sub-unit connection and have the gas blow pipe, join in marriage a kind cup lateral wall upper portion and seted up the constant volume mouth, join in marriage a kind cup and a kind cup bottom and do not be connected with the evacuation pipe. The sample water detection and other working flows are separately carried out in the sample water cup and the sample preparation cup respectively, so that the sample water is prevented from remaining dirt in the cup wall, the precision of the quality control instrument is further influenced along with the accumulation of time, the proper labeling volume can be calculated through the water sample concentration and the standard solution concentration which are measured by the instrument for the first time, and the dynamic labeling recovery is realized.

Each dynamic standard preparation quality control instrument can be matched with only one water quality analyzer for use, a high-precision plunger pump 11 is adopted to realize the transmission and the metering of standard liquid, the full range of an injection pump is 5ml, the liquid quantity accuracy is less than 1%, and the precision is very high; the high-concentration standard liquid is matched, when the standard is recovered or checked, the plunger pump absorbs X milliliters of the high-concentration standard liquid into the pump body, then the plunger pump is switched to inject into the sample preparation cup 1 to be mixed with a water sample or pure water, and dynamic standard addition is realized by adopting a method that the high-precision plunger pump directly changes the standard volume, so that the error caused by manual standard preparation on site can be reduced.

In the embodiment, the upper parts of the side parts of the sample preparation cup and the sample water cup are provided with overflow ports, and the overflow ports are connected with overflow pipes; the constant volume port of the sample preparation cup 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 8. This proposal adopts air pump 8 to take and blow for joining in marriage sample cup 1 when adding mark recovery and standard sample and checking, stirs the mark liquid that makes the joining and water sample misce bene with the bubble, and air pump 8 air output is fit for, and the time of blowing can set up on the touch-sensitive screen.

In the embodiment, the sample inlet pipe at the top of the sample preparation cup and the sample water cup is connected with a sample inlet main pipe through a three-way sample water valve 5, and the sample inlet main pipe is connected with a sample inlet pump 3; the pure water pipe is connected with a pure water pump 4.

In this embodiment, the sample supply pipe is provided with sample supply valves, i.e. a sample supply valve a12 on the sample supply pipe of the sample preparation cup 1 and a sample supply valve B13 on the sample supply pipe of the sample water cup 2; and the emptying pipe is provided with an emptying valve, namely an emptying pipe A9 on the emptying pipe of the sample preparation cup 1 and an emptying pipe B6 on the emptying pipe of the sample water cup 2.

In the embodiment, the system also comprises an online water quality control instrument, wherein the online water quality control instrument is connected with a sample pump, a pure water pump, a three-way sample water valve, an emptying valve B, a constant volume pump, an air pump, an emptying valve A, a plunger pump, a sample supply valve A, a sample supply valve B and a sample supply valve C; the software on the online quality control instrument for water quality realizes that zero standard, range standard, water sample and standard adding mixed sample are automatically provided for the measurement of the water quality analyzer, and the amount of the standard adding amount and the concentration of the standard sample can be dynamically adjusted within a certain range through the interface setting of the touch screen.

The utility model discloses developments are joined in marriage standard matter and are controlled appearance working process as follows:

1) When the water sample is measured, the quality control instrument regularly arrives or receives corresponding instructions: firstly, an emptying valve B6 of a quality control instrument is opened, a last water sample in a sampling cup is emptied, the emptying valve B6 is closed after the emptying is finished, a sample injection pump 3 of the quality control instrument is started to extract the water sample to be measured from a flow cell to a sample water cup 2 to be rinsed with the water sample for a period of time, the emptying valve B6 is opened, the emptying valve B6 of the quality control instrument is closed after the emptying is finished again, the water sample is stored in the sample water cup 2, when the water level of the sampling cup is close to an overflow port, the sample injection pump 3 is stopped, a sample supply valve B13 is opened at the same time, and finally, the instrument extracts the water sample to be measured.

2) When the standard sample is required to be checked, the quality control instrument regularly arrives or receives a corresponding instruction: firstly, an emptying valve A9 of a quality control instrument is opened, the last liquid in a sample preparation cup 1 is emptied, the emptying valve A9 is closed after emptying is finished, a pure water pump 4 of the quality control instrument is started to pump pure water into the sample preparation cup 1, the pure water is used for rinsing for a period of time, the emptying valve A9 is opened, the emptying valve A9 of the quality control instrument is closed after emptying again, the pure water is stored in the sample preparation cup 1, when the water level of the sample preparation cup is close to an overflow port, a sample injection pump 4 is stopped, a constant volume pump 7 is operated, redundant pure water in the sample preparation cup 1 is pumped out, the water level reaches the constant volume port, the volume of the pure water in the sample preparation cup is 114 milliliters, then a plunger pump pumps X milliliters into a pump body, a plunger pump valve is opened again, a standard sample is injected into the sample preparation cup, the air pump starts to operate, the pure water and the high concentration standard liquid are stirred uniformly through bubbles, the air pump is closed, a sample supply valve A12 is opened, finally a standard sample is pumped out for measurement, and when the difference between the result of the instrument and the concentration of the standard sample is over 10%, the data are not accurately calibrated.

3) When zero-mark checking is required, the quality control instrument regularly arrives or receives a corresponding instruction: firstly, emptying 9 of a quality control instrument is opened, last liquid in a sample preparation cup 1 is emptied, an emptying valve A9 is closed after emptying is finished, a pure water pump 4 of the quality control instrument is started to pump pure water into the sample preparation cup 1, pure water is used for rinsing for a period of time, the emptying valve A9 is opened, the emptying valve A9 of the quality control instrument is closed after emptying again, the pure water is stored in the sample preparation cup 1, when the water level of the sample preparation cup is close to an overflow port, a sample feeding pump 4 is stopped, a sample supplying valve A12 is opened, and the instrument pumps the pure water for measurement.

4) 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, an emptying valve A9 of a quality control instrument is opened, a previous water sample in a sample preparation cup is emptied, the emptying valve A9 is closed after the emptying is finished, a three-way sample water valve 5 is opened, a sample injection pump 3 is started to extract a water sample to be measured from a flow cell to the sample preparation cup 1 to be rinsed with the water sample for a period of time, the emptying valve A9 is opened, the emptying valve A9 of the quality control instrument is closed after the emptying is finished again, the water sample is stored in the sample preparation cup 1, when the water sample in the sample preparation cup is close to an overflow port, the sample injection pump 3 and the three-way sample water valve 5 are closed, a sample supply valve A12 is opened, a constant volume pump 7 is started after the water sample is firstly extracted by the instrument for one-time measurement, the redundant water sample in the sample preparation cup 1 is extracted, and the water level reaches the constant volume port position, at the moment, the volume of a water sample in the sampling cup 1 is 115 milliliters, then the plunger pump sucks X milliliters of standard sample into the pump body, then the valve of the plunger pump is opened, the standard sample is injected into the sample preparation cup, the air pump starts to operate, the water sample and the high-concentration standard solution are uniformly stirred through air bubbles, the air pump is closed, the sample supply valve A12 is opened, finally the instrument extracts the mixed sample for measurement, the water sample measurement value measured by the instrument for the first time and the standard adding mixed sample value measured by the instrument for the second time are brought into a standard adding recovery rate calculation formula, when the standard adding recovery rate exceeds 80-120%, the condition that the deviation of the water sample measurement value is overlarge due to the external conditions or the reason of the instrument is judged, and the water sample test data at the moment are invalid.

Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and 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 effects 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 the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

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 are within the protection scope of the technical solution of the present invention.

Claims (4)

1. The utility model provides a developments join in marriage standard matter accuse appearance which characterized in that: including the mark fluid reservoir, join in marriage sample cup, appearance drinking cup and water quality analyzer, join in marriage sample cup and sample drinking cup top and partly do not be connected with the confession appearance pipe to water quality analyzer, join in marriage sample cup and sample drinking cup top and still be connected with into the appearance pipe respectively, join in marriage sample cup top and be connected with the pure water pipe and be connected to the mark fluid reservoir's mark liquid pipe, be equipped with the plunger pump on the mark liquid pipe, join in marriage sample cup lateral wall sub-unit connection and have the gas blow pipe, join in marriage sample cup lateral wall upper portion and seted up the constant volume mouth, join in marriage sample cup and sample drinking cup bottom and partly do not be connected with the evacuation pipe.

2. The dynamic calibration quality control instrument according to claim 1, wherein: the upper parts of the side parts of the sample preparation cup and the sample water cup are provided with overflow ports, and the overflow ports are connected with overflow pipes; the constant volume port of the sample preparation cup is connected with a constant volume pump through a constant volume liquid discharge pipe, and the air blowing pipe is connected with an air pump.

3. The dynamic calibration quality control instrument according to claim 1, wherein: the sample inlet pipe at the top of the sample preparation cup and the top of the sample water cup are connected with a sample inlet main pipe through a three-way sample water valve, and the sample inlet main pipe is connected with a sample inlet pump; the pure water pipe is connected with a pure water pump.

4. The dynamic calibration quality control instrument according to claim 1, wherein: the sample supplying pipe is provided with a sample supplying valve, and the emptying pipe is provided with an emptying valve.

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