CN214844831U

CN214844831U - Full-automatic cyanide measuring device

Info

Publication number: CN214844831U
Application number: CN202120495023.XU
Authority: CN
Inventors: 于翔; 邹来娣; 王晓东; 都述宽; 王韦
Original assignee: Shanghai Online Science Instrument Co ltd
Current assignee: Shanghai Online Science Instrument Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-11-23
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a full-automatic cyanide measuring device, which comprises an injection pump, a multi-way valve, a reaction container, chloramine T, a buffering agent, a color developing agent, a spectrophotometer and a control system; the injection pump is an automatic injector for transferring the distilled liquid and various reagents of the water sample, the multi-way valve is a guide valve for transferring the distilled liquid and the reagents of the water sample, the reaction container is used for quantitatively storing the distilled liquid of the water sample and adding various reagents to enable the water sample to react in the container, chloramine T, a buffering agent, a color developing agent and the like are the reagents in the container connected with the multi-way valve and are respectively added into the reaction container by the injection pump to participate in chemical reaction, the spectrophotometer is used for measuring the cyanide concentration of the solution in the reaction container, and the control system controls the automatic operation of the whole device. The device provided by the utility model can make whole measurement process realize full automation.

Description

Full-automatic cyanide measuring device

Technical Field

The utility model relates to a water quality testing technical field especially relates to a measuring device of cyanide in surface water, domestic sewage and industrial waste water.

Background

At present, cyanide in water has great harm to water quality and human health, the detection of cyanide is very important, and the workload of detection is continuously increased. The detection work is manual operation and is troublesome. The existing cyanide measuring method is spectrophotometry, water sample is added with EDTA or zinc nitrate and distilled on a distiller, the distilled solution reacts with chloramine T at a certain temperature and pH value to generate cyanogen chloride, then reacts with isonicotinic acid, and is hydrolyzed to form glutaconine dialdehyde, which reacts with color developing agent to generate blue compound, and the chromaticity of the blue compound is in direct proportion to the mass concentration of cyanide within a certain concentration range, and the absorbance is measured by a spectrophotometer. The pretreatment steps of distillation, reaction and the like are complicated, operations such as reagent adding, distillation, transfer, reaction, cleaning and the like are needed, and operators are required to contact harmful reagents. Moreover, due to the inconsistency of manual operations, the precision of the measurement is also poor, which is cumbersome and time consuming. Therefore, in order to solve the above problems, an automatic method is needed to replace the existing manual operation, which is time-saving and labor-saving, and can avoid the harm of harmful reagents to people.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a full-automatic cyanide measuring device, the operating problem of above-mentioned prior art can be solved to the device, realizes that the testing process is whole automatic.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a full-automatic cyanide processing apparatus, its characterized in that: comprises a syringe pump, a multi-way valve, a reaction container, a bottle for containing various reagents such as chloramine T, a buffering agent, a color developing agent and the like, a spectrophotometer and other system components. After a water sample is distilled by an automatic distiller, a distillate is transferred into a reaction container by an injection pump through a multi-way valve, then reagents such as chloramine T, a buffering agent, a color developing agent and the like are respectively added into the reactor one by one according to reaction time by the injection pump through the multi-way valve, and after the reaction is finished, the solution in the reaction container is transferred into a cuvette of a spectrophotometer according to time sequence by the injection pump for measurement. The whole operation program is controlled by a control system in a computer to automatically run.

Optionally, the multi-way valve can be replaced by one or two or a plurality of electromagnetic valves.

Optionally, the multi-way valve is connected with an injection pump, the injection pump is used for transferring the extraction reagent and the extraction solution, and other delivery pumps can be used for replacing the multi-way valve

Optionally, the injector is connected to a central interface of the multi-way valve, and the multi-way valve is also connected in parallel with a reagent bottle containing a reagent, a cuvette of a spectrophotometer, a standard sample bottle, a waste liquid bottle, and the like.

Alternatively, the spectrophotometer may be replaced with a colorimeter for measuring the absorbance of the solution after the reaction at a certain wave.

And simultaneously, the utility model discloses a measuring method based on above-mentioned full-automatic aquatic cyanide device of measuring, its characterized in that: the method mainly comprises the following steps:

the method comprises the following steps: transferring the distilled water sample distillate into a reaction container from a distiller by an injection pump through a multi-way valve, or manually putting the distilled water sample or a standard sample into the reaction container;

step two: the chloramine T, the buffering agent, the color developing agent and the like are sequentially and respectively added into a reactor containing water sample distillate or a standard sample by an injection pump, and the reaction is carried out at a certain temperature according to the set time;

step three: after the reaction time is over, transferring the solution after the reaction into a cuvette of a spectrophotometer by an injector to measure the absorbance of the solution;

step four: in the same method, the standard sample can be moved into a reaction container, and each reagent is sequentially and respectively added to react under the same conditions as the water sample distilled solution;

step five: according to the Lambert-beer law, the measured absorbance is in direct proportion to the concentration of cyanide in the solution, so that the cyanide concentration of the water sample distillate can be calculated according to the direct proportion relation between the absorbance of the standard sample and the known concentration, and the cyanide concentration of the water sample before distillation can be calculated.

The utility model discloses for prior art gain following technological effect:

1. the utility model provides a cyanide device in full-automatic measurement aquatic is connected the device with automatic distillation appearance through rational design, passes through the multi-ported valve center opening with the syringe pump, can shift the automatic reaction vessel that shifts of distillate of water sample respectively, has realized automatic operation.

2. The utility model provides a cyanide device in full-automatic measurement aquatic links to each other through the central opening of syringe pump and multi-ported valve, can be respectively with various reactant according to the automatic reaction vessel that adds of time requirement, automatic, regularly carry out chemical reaction.

3. The utility model discloses can measure on the spectrophotometer with the automatic transfer of the solution that the extraction was accomplished to the concentration of cyanide in the automatic calculation aquatic.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a device for automatically measuring cyanide in water according to the present invention;

wherein the reference numerals are: 1-a syringe pump; 2-a multi-way valve; 3-a reaction vessel; 4-chloramine-T; 5-a buffer; 6-color developing agent; 7-a spectrophotometer; 8-distillate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The first embodiment is as follows:

as shown in FIG. 1, the present embodiment provides a device for automatically measuring cyanide in water, comprising a 1-syringe pump; 2-a multi-way valve; 3-a reaction vessel; 4-chloramine-T; 5-a buffer; 6-color developing agent; 7-a spectrophotometer; 8-distillate. And (3) automatically distilling each water sample, respectively storing the distillate in the distillate 8, and then carrying out full-automatic operation in a computer according to the flow. The specific process is as follows:

10 ml of distilled solution is respectively taken from the connected distillate 8 by an injection pump 1 through a No. 8-10 port of a multi-way valve 2 and is respectively and automatically injected into a reaction vessel 3 connected with a No. 1-3 port of the multi-way valve 2, the injection pump 1 respectively extracts reagents from chloramine T4, a buffering agent 5, a color developing agent 6 and the like through the multi-way valve 2 and is respectively injected into the reaction vessel 3 connected with the No. 1-3 port of the multi-way valve 2, chemical reaction is carried out according to certain time, after the reaction is finished, the solution is automatically injected into a spectrophotometer 7 connected with a No. 7 port of the multi-way valve 2 by the injection pump to carry out absorbance measurement, and therefore, the concentration value of cyanide in each water sample is calculated.

In this embodiment, the spectrophotometer 7 is a conventional device, and when the solution is poured into a cuvette of the spectrophotometer 7 for measurement, the absorbance of the solution can be obtained and the cyanide concentration can be calculated.

In this embodiment, the syringe pump 1 is an automatic syringe with a stepping motor for removing distillate, various reagents, and reacted solution. As shown in fig. 1, a syringe pump 1 is connected to a central port of a multi-way valve 2, and can draw in and push out a reagent or a solution, and the drawing in and pushing out directions are controlled by the multi-way valve 2, and the multi-way valve 2 can be replaced by a plurality of electromagnetic valves as a transfer guide between a distillate 8, various reagents 4, 5, and 6, and a solution in a reaction vessel 3, and the like. Meanwhile, the distilled liquid 8, the reaction vessel 3, chloramine T4, the buffer reagent 5, the color-developing agent 6, the spectrophotometer 7, and the like are simultaneously communicated with the respective ports of the multi-way valve 2.

Meanwhile, the embodiment provides a method for fully automatically measuring cyanide in water, which is applied to the device for fully automatically measuring cyanide in water, and mainly comprises the following steps:

the method comprises the following steps: automatically transferring distilled water sample distillate which is distilled from a distiller into a reaction container through a multi-way valve by an injection pump, or manually putting the distillate or a standard sample into the reaction container;

step two: the chloramine T, the buffering agent, the color developing agent and the like are sequentially and respectively added into a reactor containing a water sample or a standard sample by an injection pump, and the reaction is carried out at a certain temperature according to the set time;

step four: in the same way, the standard sample can be moved into a reaction container, and each reagent is sequentially and respectively added to react under the same conditions as the water sample distillate;

Therefore, the utility model discloses an existing standard HJ 484 supplyes 2009, can realize full-automatic measurement aquatic cyanide, automatic transfer distillation solution, automatic reagent that adds, automatic injection spectrophotometer in measurement, automatic emission preceding processing steps such as washing, can also the automatic calculation cyanide content and form the test report, whole measurement process realizes full automation. Furthermore, the utility model discloses an automatic pretreatment method has avoided the injury of harmful reagent to the human body, has reduced intensity of labour, has reduced manual operation's error, has improved measuring precision, and the practicality is strong.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A full-automatic cyanide measuring device which characterized in that: comprises an injection pump, a multi-way valve, a reaction container, chloramine T, a buffering agent, a color developing agent, a spectrophotometer and a control system; the injection pump is an automatic injector for transferring the distillate of the water sample and various reagents, the multi-way valve is a guide valve for transferring the distillate of the water sample and the reagents, the reaction container is used for quantitatively storing the distillate of the water sample and adding various reagents to enable the water sample to react in the container, chloramine T, a buffering agent, a color developing agent and the like are reagents in the container connected with the multi-way valve and are respectively added into the reaction container by the injection pump to participate in chemical reaction, the spectrophotometer is used for measuring the cyanide concentration of the solution in the reaction container, and the control system controls the automatic operation of the whole device.

2. The fully automatic cyanide measuring device of claim 1, wherein: the injection pump is connected with the central interface of the multi-way valve and is used for transferring distillate, reagents, reacted solution and the like of a water sample.

3. The fully automatic cyanide measuring device of claim 1, wherein: the central port of the multi-way valve is connected with the injection pump, and the central port can be communicated with any one of other ports of the multi-way valve through automatic switching, so that the multi-way valve can guide distilled liquid, reagents and the like for transferring a water sample; the plurality of interfaces can be connected with distillate of a plurality of water samples, a plurality of reaction containers, chloramine T, a buffering agent, a color developing agent, a spectrophotometer and the like, or connected with a central port of another multi-way valve to enlarge the number of the measured water samples, and the multi-way valve can also be replaced by a plurality of electromagnetic valves.

4. The fully automatic cyanide measuring device of claim 1, wherein: the spectrophotometer is a measuring instrument, a cuvette of the spectrophotometer is communicated with one port of the multi-way valve, after the solution in the reaction container is reacted, the injection pump transfers the reacted solution to the cuvette of the spectrophotometer through the multi-way valve, the absorbance of the solution is measured, and the concentration of cyanide is calculated.