CN206378425U - A kind of anionic detergent detecting system - Google Patents

Abstract

The utility model discloses an anion detergent detection system, relates to the technical field of environmental protection and detection devices, and comprises: a peristaltic pump, a sample extraction module, a sample separation module and an anion detection module. The sample extraction module includes a sample mixing device and a primary extraction device connected in sequence, the sample separation module includes a gravity separation device and a stripping device, and the anion detection module includes a microporous membrane phase separator, a detector and a second waste liquid bottle. Through the above design, the hydrophobic membrane prevents the water phase from permeating to the lower layer of the microporous membrane phase separator, and is less affected by the pressure of the equipment, and no water phase will enter the detection system, avoiding the large change in the overall pressure of the equipment, resulting in the water phase and The chloroform phase separation interface is unbalanced, and the water phase enters the detection system, resulting in the problem that the detection cannot continue.

Description

An anionic detergent detection system

technical field

The utility model relates to the technical field of environmental protection and detection devices, in particular to an anion detergent detection system.

Background technique

In the field of environmental detection, the content of anionic surfactants is an important water environment detection index. The laundry detergent, washing powder, etc. important source of pollution.

At present, the detection of this project has introduced the continuous flow analyzer, which mainly injects the sample, methylene blue and chloroform into the closed chemical reaction module automatically through the peristaltic pump, and automatically completes the process of extraction, colorimetry and calculation. Thanks to the automated equipment, there is basically no contact between the human body and the chloroform phase, and the pressure during the extraction process is relatively stable, no emulsification will occur, and the accuracy and reproducibility of the test results are very high. However, the gravity phase separator in this equipment is greatly affected by the overall pressure in the equipment pipeline during the process of separating the water phase and the chloroform phase. If the overall pressure of the equipment changes greatly, it will cause the water phase and the three The phase separation interface of methyl chloride is unbalanced, and the water phase may enter the detection system, resulting in the inability to continue the detection.

Therefore, there is an urgent need for an anionic detergent detection system on the market, so that the equipment can avoid the large change in the overall pressure of the equipment, resulting in an imbalance between the water phase and the chloroform phase separation interface, and the water phase entering the detection system. Problems that cannot be detected further.

Utility model content

The purpose of this utility model is to provide a kind of anion detergent detection system, to solve the problems existing in the above-mentioned prior art, make the equipment under the pressure of the pipeline, avoid the water phase and the chloroform phase due to the large change of the overall pressure of the equipment. The separation interface is unbalanced, and the water phase enters the detection system, resulting in the problem that the detection cannot continue.

In order to achieve the above purpose, the utility model provides the following scheme: the utility model provides an anion detergent detection system,

Includes a peristaltic pump that provides vacuum to the system, and includes,

A sample extraction module, the sample extraction module includes a sequentially connected sample mixing device and a primary extraction device;

A sample separation module, the sample separation module includes a gravity separation device and a stripping device, a gravity phase separator and a first three-way pipe are sequentially arranged between the gravity separation device and the stripping device, and the gravity The phase separator includes a gravity phase separator inlet, a gravity phase separator top outlet and a gravity phase separator bottom outlet, the gravity phase separator inlet communicates with the primary extraction device, and the gravity phase separator top outlet communicates with the gravity phase separator top outlet The peristaltic pump is communicated, and the bottom outlet of the gravity phase separator is communicated with the stripping device through the first three-way pipe;

Anion detection module, the anion detection module includes a microporous membrane phase separator, a detector and a second waste liquid bottle, the microporous membrane phase separator includes a first half-separator, a second half-separator and A hydrophobic microporous filter membrane arranged between the first half-separator and the second half-separator, the first half-separator communicates with the outlet of the stripping device, and the second half-separator The detector communicates with the detector, and the detector communicates with the second waste liquid bottle.

Preferably, the first half-separator includes a mixed phase inlet and an aqueous waste liquid outlet, and the aqueous waste liquid outlet is communicated with the second waste liquid bottle; the second half-separator includes chloroform phase outlet, and the chloroform phase outlet communicates with the detector.

Preferably, the first half-separator is provided with a first groove, the second half-separator is provided with a second groove, and the first groove and the second groove are mirror images of each other, so The hydrophobic microporous membrane is arranged between the first groove and the second groove.

Preferably, the sample mixing device includes a fourth three-way pipe for mixing the sample with air and an alkaline methylene blue mixing device, the outlet of the fourth three-way pipe communicates with the inlet of the basic methylene blue mixing device, so The outlet of the basic methylene blue mixing device is communicated with the primary extraction device, and a bubble removal device is arranged between the outlet of the basic methylene blue mixing device and the primary extraction device.

Preferably, the outside of the air bubble removal device is a third three-way pipe, and the third three-way pipe includes a third three-way pipe inlet, a third three-way pipe top outlet and a third three-way pipe bottom outlet, the The inlet of the third three-way pipe is connected with the basic methylene blue mixing device, the top outlet of the third three-way pipe is connected with the peristaltic pump, and the bottom outlet of the third three-way pipe is connected with the primary extraction device.

Preferably, a second three-way pipe for mixing chloroform and basic methylene blue mixture is provided between the third three-way pipe and the primary extraction device.

Preferably, the primary extraction device is an extraction device in which a mixture of a sample and basic methylene blue is mixed with chloroform.

Preferably, a first waste liquid bottle is provided between the top outlet of the gravity phase separator and the peristaltic pump, and the first waste liquid bottle is a sealed waste liquid bottle filled with water.

Preferably, the gravity phase separator communicates with the first waste liquid bottle and the peristaltic pump through a polytetrafluoroethylene tube.

Compared with the prior art, the utility model has produced the following technical effects:

The utility model is provided with a microporous membrane phase separator, and the microporous membrane phase separator includes a first half-separator, a second half-separator and a Hydrophobic microporous membrane, the first half-separator is connected to the outlet of the stripping device, and the second half-separator is connected to the detector. Through the above design, the hydrophobic membrane prevents the water phase from flowing to the microporous membrane phase separator. The lower layer permeates and is less affected by the pressure of the equipment, and no water phase will enter the detection system, avoiding the problem that the separation interface between the water phase and the chloroform phase is out of balance due to the large change in the overall pressure of the equipment, and the water phase enters the detection system, resulting in the failure to continue detection .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings according to these drawings without paying creative efforts.

Fig. 1 is the schematic diagram of the utility model anionic detergent detection system;

Fig. 2 is the structural representation of the microporous membrane phase separator in the anionic detergent detection system of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the microporous membrane phase separator in the anion detergent detection system of the present invention.

Among them, 1-peristaltic pump, 2-fourth three-way pipe, 3-sample mixing device, 4-third three-way pipe, 5-second three-way pipe, 6-primary extraction device, 7-gravity separation device, 8 -gravity phase separator, 9-first three-way pipe, 10-extraction device, 11-microporous membrane phase separator, 12-detector, 13-second waste bottle, 14-first waste bottle , 15-first half-separator, 16-second half-separator, 17-hydrophobic microporous membrane, 18-mixed phase inlet, 19-water phase waste liquid outlet, 20-chloroform phase outlet, 21- first groove.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The purpose of this utility model is to provide an anion detergent detection system to solve the problems existing in the prior art, so that the equipment can avoid the separation of the water phase and the chloroform phase due to the large change in the overall pressure of the equipment under the pressure of the pipeline. The interface is unbalanced, and the water phase enters the detection system, resulting in the problem that the detection cannot continue.

In order to make the above purpose, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1-3, the utility model provides an anion detergent detection system, including a peristaltic pump 1 that provides vacuum to the system, a sample extraction module, a sample separation module and an anion detection module.

The sample extraction module includes a sample mixing device 3 and a primary extraction device 6 connected in sequence. In a specific embodiment, the sample mixing device 3 includes a fourth three-way pipe 2 for mixing the sample with air and an alkaline methylene blue mixing device. The outlet of the four-way three-way pipe 2 is communicated with the inlet of the basic methylene blue mixing device, and the outlet of the basic methylene blue mixing device is connected with the primary extraction device 6. When the sample is injected into the basic methylene blue mixing device by the peristaltic pump 1, evenly inject air bubbles, The sample is divided into several sections, and then injected with basic methylene blue. The water sample and basic methylene blue are fully mixed in the basic methylene blue mixing device and completely react to form a blue ion-pair compound. Because there are gaps in the air bubbles, the diffusion of the sample is prevented. . A third three-way pipe 4 is arranged between the outlet of the basic methylene blue mixing device and the primary extraction device 6, and the third three-way pipe 4 includes a third three-way pipe 4 inlet, a third three-way pipe 4 top outlet, and a third three-way pipe. The outlet at the bottom of the through pipe 4, the inlet of the third three-way pipe 4 communicates with the basic methylene blue mixing device, the outlet at the top of the third three-way pipe 4 communicates with the peristaltic pump 1, and the outlet at the bottom of the third three-way pipe 4 communicates with the primary extraction device 6. Since the air bubbles are relatively light, they will flow upwards of the three-way tube by themselves and be discharged through the peristaltic pump 1 tube. At this time, the air bubbles are removed to prevent the elasticity of the air bubbles from causing pressure instability in the subsequent extraction process. A second three-way pipe 5 for mixing chloroform and basic methylene blue mixture is arranged between the third three-way pipe 4 and the primary extraction device 6 to facilitate the fusion of reagents. Wherein, the primary extraction device 6 is an extraction device in which a mixture of a sample and basic methylene blue is mixed with chloroform.

The sample separation module includes a gravity separation device 7 and a stripping device 10, and a gravity phase separator 8 and a first three-way pipe 9 are arranged in sequence along the gravity separation device 7 to the stripping device 10, and the gravity phase separator 8 includes The gravity phase separator 8 inlet, the gravity phase separator 8 top outlet and the gravity phase separator 8 bottom outlet, the gravity phase separator 8 inlet is connected with the primary extraction device 6, the gravity phase separator 8 top outlet is connected with the peristaltic pump 1 . In this embodiment, a first waste liquid bottle 14 is arranged between the top outlet of the gravity phase separator 8 and the peristaltic pump 1. The first waste liquid bottle 14 is a sealed waste liquid bottle filled with water. The gravity phase separator 8 It is communicated with the first waste liquid bottle 14 and the peristaltic pump 1 through a polytetrafluoroethylene tube. Since the density of chloroform is higher than that of water, the chloroform phase will sink below the gravity phase separator 8, and the water phase will be located at the bottom of the gravity phase separator 8. Above the gravity phase separator 8, the water phase above the gravity phase separator 8 is extracted by extracting the water in the first waste liquid bottle 14, where a small amount of chloroform will also be drawn into the first waste liquid bottle 14 . The outlet at the bottom of the gravity phase separator 8 communicates with the stripping device 10 through the first three-way pipe 9, and the chloroform phase is stripped once by acidic methylene blue to remove the interference of macromolecules such as proteins;

Anion detection module comprises microporous membrane phase separator 11, detector 12 and the second waste liquid bottle 13, and microporous membrane phase separator 11 comprises first half-separator 15, second half-separator 16 and is arranged on The hydrophobic microporous filter membrane 17 between the first half-separator 15 and the second half-separator 16, the first half-separator 15 communicates with the outlet of the stripping device 10, and the second half-separator 16 communicates with the detector 12 , the detector 12 communicates with the second waste liquid bottle 13 . In this embodiment, the first half-separator 15 includes a mixed phase inlet 18 and an aqueous phase waste liquid outlet 19, and the aqueous phase waste liquid outlet 19 communicates with the second waste liquid bottle 13; the second half-separator 16 includes a trichloro The methane phase outlet 20 and the chloroform phase outlet 20 communicate with the detector 12. Further, the first half-separator 15 is provided with a first groove 21, and the second half-separator 16 is provided with a second groove. The groove 21 and the second groove are mirror images of each other, the hydrophobic microporous filter membrane 17 is arranged between the first groove 21 and the second groove, and the water phase and the chloroform phase are separated by micropores. The mixed phase inlet 18 of the filter membrane phase separator 11 enters, and then flows in the groove, and then the water phase mixed with a small amount of chloroform phase flows out from the upper water phase waste liquid outlet 19. Simultaneously, in the process of flowing, the chloroform phase will seep through the hydrophobic membrane into the lower groove, and flow out from the chloroform phase outlet 20 . Finally, the chloroform phase containing the blue ion pair compound enters the detector 12 for colorimetry and calculation.

During the experiment, when the sample is injected into the basic methylene blue mixing device through the peristaltic pump 1, air bubbles are evenly injected to separate the sample into several sections, and then the basic methylene blue is injected, and the water sample and basic methylene blue are in the basic methylene blue mixing device. fully mixed and completely reacted, the formed basic methylene blue mixed solution containing the blue ion pair compound enters the third three-way pipe 4, and under the action of the peristaltic pump 1, the air in the mixed solution is drawn out to remove the mixed solution of the air. The liquid is mixed with the chloroform solution through the second three-way pipe 5, and the blue ion pair compound is extracted into the chloroform phase in the primary extraction device 6. The extracted mixed solution enters the gravity separation device 7, depending on the solution density, to realize the layering of the solution, and in the gravity phase separator 8, the upper layer of the aqueous phase solution is extracted by the action of the peristaltic pump 1, and the relatively pure chloroform is mixed. After the solution is mixed with the acidic methylene blue solution, in the stripping device 10, macromolecules such as proteins in the chloroform mixed solution are utilized to remove macromolecules such as proteins in the chloroform mixed solution, and then the chloroform mixed solution enters the microporous membrane membrane phase separator 11, and Under the action of the hydrophobic microfiltration membrane, the pure trichloromethane phase solution is extracted and enters the detector 12 for detection and calculation.

It should be noted that the utility model can not be provided with the fourth three-way pipe and the third three-way pipe, directly mix the sample with the basic methylene blue solution in the sample mixing device, and then mix the sample with the chloroform solution through the second three-way pipe. Mix in a primary extraction unit. Between the gravity phase separator and the peristalsis, the first waste liquid bottle may not be provided to achieve the extraction of the water phase waste liquid in the gravity separator. In addition, the microporous membrane phase separator needs to be equipped with a hydrophobic microporous membrane, which can effectively prevent the water phase from entering the detector. The structure of the microporous membrane phase separator can be adjusted and changed according to the actual situation.

In the utility model, specific examples have been used to illustrate the principle and implementation of the utility model, and the descriptions of the above examples are only used to help understand the method of the utility model and its core idea; meanwhile, for those of ordinary skill in the art According to the idea of the present invention, there will be changes in the specific implementation and application range. To sum up, the contents of this specification should not be understood as limiting the utility model.

Claims (9)

1. a kind of anionic detergent detecting system, including oriented system provide the peristaltic pump of vacuum, it is characterised in that：Also wrap Include,

Sample extraction module, the sample extraction module includes the sample mix device and single extraction device being sequentially communicated；

Sample separation module, the sample separation module includes gravitational separation device and back extraction device, along the gravity Separator is disposed with gravity phase separator and the first three-way pipe, the gravity phase point between the back extraction device Include gravity phase separator entrance, gravity phase separator top exit and gravity phase separator outlet at bottom from device, it is described Gravity phase separator entrance is connected with the single extraction device, and the gravity phase separator top exit connects with the peristaltic pump Logical, the gravity phase separator outlet at bottom is connected by first three-way pipe with the back extraction device；

Anionic recognition module, the Anionic recognition module includes miillpore filter phase separator, detector and the second waste liquid Bottle, the miillpore filter phase separator includes the first semi-detached device, the second semi-detached device and is arranged at first half point From the hydrophobic micropore filter membrane between device and the second semi-detached device, the first semi-detached device and the back extraction device Outlet, the second semi-detached device is connected with the detector, and the detector is connected with second waste liquid bottle.

2. anionic detergent detecting system according to claim 1, it is characterised in that：The first semi-detached device includes There are mixed phase import and aqueous phase waste liquid outlet, the aqueous phase waste liquid outlet is connected with second waste liquid bottle；Described the second half Separator includes chloroform and mutually exported, and the chloroform is mutually exported to be connected with the detector.

3. anionic detergent detecting system according to claim 2, it is characterised in that：The first semi-detached device is set There is the first groove, the second semi-detached device is provided with the second groove, first groove and second groove mirror image each other Set, the hydrophobic micropore filter membrane is arranged between first groove and second groove.

4. anionic detergent detecting system according to claim 1, it is characterised in that：The sample mix device includes There are the 4th three-way pipe mixed for sample with air and the blue mixing arrangement of alkaline methylene base, the outlet of the 4th three-way pipe Connected with the entrance of the blue mixing arrangement of the alkaline methylene base, the blue mixing arrangement outlet of the alkaline methylene base once extracts with described Take device to connect, bubble removal dress is provided between the blue mixing arrangement outlet of the alkaline methylene base and the single extraction device Put.

5. anionic detergent detecting system according to claim 4, it is characterised in that：The bubble removal device is the Three three-way pipes, the 3rd three-way pipe includes the 3rd three-way pipe import, the 3rd three-way pipe top exit and the 3rd three-way pipe Outlet at bottom, the 3rd three-way pipe import is connected with the blue mixing arrangement of the alkaline methylene base, at the top of the 3rd three-way pipe Outlet is connected with the peristaltic pump, and the 3rd three-way pipe outlet at bottom is connected with the single extraction device.

6. anionic detergent detecting system according to claim 5, it is characterised in that：3rd three-way pipe with it is described The second three-way pipe for the blue mixed liquor of chloroform and alkaline methylene base to be mixed is provided between single extraction device.

7. the anionic detergent detecting system according to claim any one of 3-6, it is characterised in that：The single extraction Device is the extraction equipment that the sample mixed liquor blue with alkaline methylene base is mixed with chloroform.

8. anionic detergent detecting system according to claim 1, it is characterised in that：At the top of the gravity phase separator The first waste liquid bottle is provided between outlet and the peristaltic pump, first waste liquid bottle is to fill water and sealed waste liquid bottle.

9. anionic detergent detecting system according to claim 8, it is characterised in that：The gravity phase separator and institute State and connected between the first waste liquid bottle and the peristaltic pump by polyfluortetraethylene pipe.