CN211235899U

CN211235899U - Tester for anionic surfactant in water

Info

Publication number: CN211235899U
Application number: CN201922183286.2U
Authority: CN
Inventors: 于盈达; 姚建国; 沈丽丹; 马建茹; 林敏�; 徐珍琪; 单丹萍
Original assignee: Ningbo Rannuo Scientific Instrument Co ltd
Current assignee: Ningbo Rannuo Scientific Instrument Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-11
Anticipated expiration: 2029-12-09

Abstract

The utility model relates to an aquatic anion surfactant apparatus, including casing and the bottom plate that is located the chassis bottom, be provided with the rotary table system on the bottom plate, be provided with the rotatory tray of placing a plurality of sample cups on the rotary table system, the arm that can reciprocate has above the rotatory tray, the arm is provided with the liquid suction pipe that is used for extracting the chloroform extract after the extraction, is used for pouring into the injection scavenge pipe that pure water washd the sample cup; the full-automatic measurement of the anionic surfactant in the sample is realized, the stability of water sample extraction is guaranteed, and all organic reagents are automatically added and waste liquid is collected in the extraction process, so that experimenters do not need to contact toxic organic reagents completely, humanized design is met, the working efficiency of the experimenters is improved, and manpower is effectively saved.

Description

Tester for anionic surfactant in water

Technical Field

The utility model relates to an aquatic anion testing arrangement field specifically is aquatic anion surfactant apparatus.

Background

At present, the national standard method of methylene blue spectrophotometry (GB 7494-87) for measuring the anionic surfactant in water is mostly adopted for measuring the content of the anionic surfactant in water in a laboratory, and aiming at the method, few and many problems exist in the instrument market for automatically measuring the anionic surfactant in water:

1. most of products for measuring the anionic surfactant in water in the market are manual measuring instruments, namely, the products can only be used for measuring the anionic surfactant by a spectrophotometry method, and cannot be used for pretreating a water sample. The artificial pretreatment of the water sample is required most of the time in the process of measuring the content of the anionic surfactant, and a large amount of organic reagents such as chloroform and the like are used in the pretreatment process of the water sample, so that the health of people is seriously influenced, and the risk of carcinogenesis is caused. In addition, the process adopts a separating funnel for manual extraction, so that the stability of a measuring result is poor, and time and labor are consumed.

2. In some automatic anionic surfactant measuring instruments in the market, an automatic sample injector mostly adopts a rotating disc type, a sample cup is fixed, and only one mechanical arm rotates to process different samples. Thereby limiting the number of sample bits in the autosampler.

3. Some automatic anionic surfactant measuring instruments in the market adopt a flow injection method, which is not completely carried out according to the national standard method of methylene blue spectrophotometry for measuring water anionic surfactants (GB 7494-37).

4. Some full-automatic instruments in the market only have the washing process of an extracting agent, and the constant volume process of the extracting agent is omitted.

5. Some full-automatic instruments in the market adopt split type separation and volume fixing cups, and the glassware is fragile, unsafe and reliable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an aquatic anion surfactant apparatus is provided to solve the defect that exists among the prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the tester for the anionic surfactant in water comprises a machine shell and a bottom plate positioned at the bottom of the machine shell, wherein a turntable system is arranged on the bottom plate, a rotating tray for placing a plurality of sample cups is arranged on the turntable system, a mechanical arm capable of moving up and down is arranged above the rotating tray, and the mechanical arm is provided with a liquid extracting pipe for extracting extracted chloroform extract liquid and an injection cleaning pipe for injecting pure water to clean the sample cups; the liquid pumping pipe is communicated with the washing constant volume cup; the injection cleaning pipe is communicated with the pure water cup; the sample cup is respectively connected with the methylene blue reagent cup and the washing liquid cup through an electric three-way valve connected with a No. 1 peristaltic pump; organic reagent is added between the sample cup and the organic reagent bottle through a syringe pump 16 and a multi-way valve 11; the outside of the shell is connected with a computer control system through a mechanical arm, and the computer control system 8 is respectively connected with the turntable system 3, the peristaltic pump No. 1 14 and the electric three-way valve and used for controlling the actions of the peristaltic pump No. 1 and the electric three-way valve;

further, the liquid pumping pipe 5 is communicated with the sample cup and the washing containing cup 7 through a pipeline provided with a No. 2 peristaltic pump 15;

further, the injection cleaning tube 6 is communicated with the pure water cup and the sample cup through a pipeline provided with a diaphragm pump;

furthermore, a stirring motor No. 1 is integrated on the mechanical arm, a stirrer is arranged in the washing constant volume cup, and a stirring motor No. 2 is arranged at the lower part of the washing constant volume cup; the No. 1 stirring motor and the No. 2 stirring motor are electrically connected with a computer control system;

furthermore, the inner and outer cylinders of the washing volumetric cup are manufactured in an integrated processing mode;

furthermore, the washing volumetric cup, the injection pump 15 and the multi-way valve 11 are provided with a filtering membrane and a dewatering membrane which are connected in series;

furthermore, the front end of the injection pump is provided with a multi-way valve which is controlled by a computer control system to open and close, and the multi-way valve is provided with different channels which are respectively communicated with the external air and the extraction reagent bottle.

The utility model has the advantages that: the full-automatic measurement of the anionic surfactant in the sample is realized, the stability of water sample extraction is guaranteed, and all organic reagents are automatically added and waste liquid is collected in the extraction process, so that experimenters do not need to contact toxic organic reagents completely, humanized design is met, the working efficiency of the experimenters is improved, and manpower is effectively saved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic rear view of the present invention;

FIG. 3 is a schematic side view of the present invention;

the reference numerals are explained below:

1. the device comprises a shell, a base plate, a turntable system, a mechanical arm, a liquid pumping pipe, a liquid injection cleaning pipe, a washing and containing cup, a computer control system, a filter membrane, a dewatering membrane, a multi-way valve, a stirring motor No. 12, a stirring motor No. 1, a stirring motor No. 13, a stirring motor No. 2, a peristaltic pump No. 14, a peristaltic pump No. 1, a peristaltic pump No. 16, a peristaltic pump No. 2, a syringe pump, a cover plate, a supporting rod and a liquid storage tank, wherein the base plate is arranged on the shell;

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, the apparatus for measuring anionic surfactant in water comprises a housing 1 and a bottom plate 2 located at the bottom of the housing 1, wherein a turntable system 3 is arranged on the bottom plate 2, a rotating tray for placing a plurality of sample cups is arranged on the turntable system 3, a mechanical arm 4 capable of moving up and down is arranged above the rotating tray, and the mechanical arm 4 is provided with a liquid extracting pipe 5 for extracting chloroform extract after extraction and an injection cleaning pipe 6 for injecting pure water to clean the sample cups; the liquid pumping pipe 5 is communicated with the washing containing cup 7; the injection cleaning pipe 6 is communicated with the pure water cup; the sample cup is respectively connected with a methylene blue reagent cup and a washing liquid cup through an electric three-way valve connected with a No. 1 peristaltic pump 14; organic reagents are added between the sample cup and the organic reagent bottle through an injection pump and a multi-way valve; the outside of the shell is connected with a computer control system through a mechanical arm, and the computer control system is respectively connected with the turntable system, the No. 1 peristaltic pump and the electric three-way valve and used for controlling the actions of the turntable system, the No. 1 peristaltic pump and the electric three-way valve;

more specifically, the liquid suction pipe 5 is communicated with the sample cup and the washing containing cup 7 through a pipeline provided with a No. 2 peristaltic pump 15;

more specifically, the injection cleaning tube 6 is communicated with the pure water cup and the sample cup through a pipeline provided with a diaphragm pump;

during specific work, the sample cup is placed into the turntable system, the turntable system is rotated to be above the sample cup at the No. 1 position of the rotating tray, the computer control system controls the mechanical arm to descend, the stirring rod, the liquid pumping pipe and the injection pipe enter the sample cup, the No. 1 peristaltic pump and the three-way valve are controlled to cooperate to pump a certain volume of detergent into the washing cup in the integrated washing constant volume cup, and the No. 1 peristaltic pump and the three-way valve cooperate to pump a certain volume of methylene blue into the sample; then, an injection pump is matched with the multi-way valve to extract a certain volume of organic reagent from the organic reagent port, then the multi-way valve is transferred to an injection pipeline connected with the mechanical arm, and the organic reagent is injected into the sample cup; starting a stirring motor for a certain time to stir and extract a water sample; starting a No. 2 peristaltic pump to pump the organic reagent in the sample cup into a washing cup in the integrated washing constant volume cup, and starting magnetic stirring to wash the organic reagent; then, through the matching of the injection pump and the multi-way valve, air with a certain volume is extracted from a pipeline connected with the constant volume cup, and the organic reagent is extracted from the washing cup to the constant volume cup by utilizing air pressure; repeating the steps for three times to finish the extraction process;

in another specific embodiment, a No. 1 stirring motor 12 is integrated on the mechanical arm 4, a stirrer is arranged in the washing holding cup 7, and a No. 2 stirring motor 13 is arranged at the lower part of the washing holding cup; the No. 1 stirring motor and the No. 2 stirring motor are electrically connected with the computer control system 8;

more specifically, the inner and outer cylinders of the washing volumetric cup are manufactured in an integrated processing mode;

more specifically, a filtering membrane and a dewatering membrane which are connected in series are arranged between the washing volumetric cup and the No. 2 injection pump and the multi-way valve;

more specifically, the front end of the injection pump 16 is provided with a multi-way valve 11 which is controlled to be opened and closed by the computer control system 8, the multi-way valve 11 is provided with different channels which are respectively communicated with external air and an extraction reagent bottle, and the multi-way valve is controlled to be opened according to different operations, so that extraction of the extraction reagent chloroform is realized or an organic reagent is extracted from a washing cup to a holding cup through air pressure to finish constant volume;

during specific work, an injection pump in the constant volume process extracts a certain volume of organic reagent and directly injects the organic reagent into a washing cup in the integrated washing constant volume cup, and a No. 2 stirring motor is started for a certain time to wash the organic reagent; then pumping a certain volume of air through a pipeline connected with the constant volume cup by using an injection pump, and pumping the organic reagent from the washing cup to the constant volume cup by using air pressure to complete constant volume; the injector extracts the organic solution in the constant volume cup, impurities in the organic solution are removed through the filtering membrane in the extraction process, and moisture is removed through the water removal membrane. And then injecting the extracted organic reagent into the cuvette by an injection pump and a multi-way valve, starting a light path system, and reading the absorbance of the organic solution in the cuvette by a computer on a host computer, thereby calculating the content of the anionic surfactant in the water sample. The water sample in the sample is discharged through the No. 2 peristaltic pump after the measurement is finished, the injection cleaning tube is cleaned, and the waste liquid is discharged.

Therefore, under the control of a computer control system, according to the measurement process, the turntable system continues to operate, and the mechanical arm also operates simultaneously, so that subsequent water samples are sequentially treated, the whole process is circularly and repeatedly operated, and the full-automatic multi-sample simultaneous circulating operation measurement of the anionic surfactant in water is realized.

For the convenience of maintenance, the front surface of the machine shell is provided with a hinged cover plate 17, and the cover plate 17 can be fixed by a support rod 18 when being opened;

the utility model has the advantages of as follows: can realize the water sample, the automatic extraction and the constant volume of reagent, whole process does not need artificial any intervention, has realized the full automatic measure of anion surfactant in the sample, has guaranteed the stability of water sample extraction to the extraction in-process organic reagent is whole automatic to be added and the waste liquid is collected, makes the experimenter need not contact poisonous organic reagent completely, has satisfied humanized design, has improved experimenter's work efficiency, and the effectual manpower of having saved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The aquatic anionic surfactant apparatus, its characterized in that: the device comprises a shell and a bottom plate positioned at the bottom of the shell, wherein a turntable system is arranged on the bottom plate, a rotating tray for placing a plurality of sample cups is arranged on the turntable system, a mechanical arm capable of moving up and down is arranged above the rotating tray, and the mechanical arm is provided with a liquid extracting pipe for extracting chloroform extract liquid after extraction and an injection cleaning pipe for injecting pure water to clean the sample cups; the liquid pumping pipe is communicated with the washing constant volume cup; the injection cleaning pipe is communicated with the pure water cup; the sample cup is respectively connected with the methylene blue reagent cup and the washing liquid reagent cup through an electric three-way valve connected with a No. 1 peristaltic pump; the sample cup and the organic reagent bottle are matched through an injection pump and a multi-way valve to add an organic reagent; the outside of the casing is connected with a computer control system through a mechanical arm, and the computer control system is respectively connected with the turntable system, the No. 1 peristaltic pump and the electric three-way valve and used for controlling the actions of the turntable system, the No. 1 peristaltic pump and the electric three-way valve.

2. An anionic surfactant in water meter as claimed in claim 1 wherein: the mechanical arm is integrated with a No. 1 stirring motor, a stirrer is arranged in the washing constant volume cup, and a No. 2 stirring motor is arranged at the lower part of the washing constant volume cup; and the No. 1 stirring motor and the No. 2 stirring motor are electrically connected with a computer control system.

3. An anionic surfactant in water meter as claimed in claim 2 wherein: the liquid pumping pipe is communicated with the sample cup and the washing containing cup through a pipeline provided with a No. 2 peristaltic pump.

4. An anionic surfactant in water meter as claimed in claim 3 wherein: the injection cleaning pipe is communicated with the pure water cup and the sample cup through a pipeline provided with a diaphragm pump.

5. An anionic surfactant in water meter as claimed in claim 4 wherein: the inner and outer cylinders of the washing volumetric cup are manufactured in an integrated processing mode.

6. An anionic surfactant in water meter as claimed in claim 5 wherein: and a filtering membrane and a dewatering membrane which are connected in series are arranged in the matching system of the washing volume-determining cup, the injection pump and the multi-way valve.

7. An anionic surfactant in water meter as claimed in claim 6 wherein: the front end of the injection pump is provided with a multi-way valve which is controlled by a computer control system to open and close, and the multi-way valve is provided with different channels which are respectively communicated with the external air and an extraction reagent bottle interface.