CN218035981U

CN218035981U - Device for efficiently extracting seawater micro-plastic

Info

Publication number: CN218035981U
Application number: CN202221936233.9U
Authority: CN
Inventors: 曾映旭; 林健晖; 康子歆; 刘瑞娜; 齐丹; 杨涛
Original assignee: Hainan Tropical Ocean University
Current assignee: Hainan Tropical Ocean University
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-13
Anticipated expiration: 2032-07-26

Abstract

A device for efficiently extracting seawater micro-plastic relates to the technical field of marine environment detection. The utility model discloses a solve current sea water micro plastic and draw in-process complex operation, draw the separation efficiency low, the micro plastic sample impurity that draws is many, and the difficult problem of carrying of device. The utility model discloses a liquid storage bottle, the pipette, filtering mechanism, the psammitolite filters the base, microfiltration membrane, waste liquid bottle and evacuation air pump, the one end of pipette stretches into the inboard bottom of liquid storage bottle, the other end rigid coupling of pipette is in filtering mechanism's upper end, filtering mechanism's lower extreme rigid coupling is in the upper end of psammitolite filtration base, the inside rigid coupling of psammitolite filtration base has microfiltration membrane, the lower extreme suit of psammitolite filtration base is at the bottleneck of waste liquid bottle, one side of psammitolite filtration base is connected with evacuation pipe, evacuation pipe's outside end and evacuation air pump are connected. The utility model is used for get the little plastics of sea water.

Description

Device for efficiently extracting seawater micro-plastic

Technical Field

The utility model relates to a marine environment detects technical field, concretely relates to device of sea water micro plastic is drawed to high efficiency.

Background

Plastic products are widely used in today's society, with annual production worldwide in excess of 3 million tons, and are growing at a rate of 0.2 million tons per year. Due to mass production and use, plastic products inevitably enter a water environment, and plastic garbage in the water environment can be further decomposed into plastic with the particle size of less than 5mm, namely micro plastic, through long-term physical and chemical actions. The problem of pollution of micro plastic, also called "PM2.5" in water environment, has become a global environmental research hotspot.

It is estimated that the amount of micro plastic chips in the ocean is 15 to 51 trillion pieces, and the total weight is 9.3 to 23.6 million tons. As a new pollutant, the micro plastic has received high attention from scholars at home and abroad. At present, the device and the method for collecting the micro-plastic in the water sample are not standardized, so that the environmental pollution investigation work of the micro-plastic cannot be fully carried out. The most common extraction and separation method for micro-plastics in seawater is a density flotation separation method, which mainly utilizes the density difference of different components to carry out precipitation separation, but the processing procedure needs to use a plurality of devices for synergy to achieve the separation purpose, the process is more complicated, the extraction efficiency is low, and the devices are not easy to carry. To this end, we propose a device for extracting seawater micro-plastics with high efficiency, so as to solve the problems proposed in the above.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve current sea water micro plastic and draw in-process complex operation, draw the separation efficiency low, the micro plastic sample impurity that draws is many, and the difficult problem that carries of device, and then propose a device of sea water micro plastic is drawed to high efficiency.

The utility model discloses a solve the technical scheme that above-mentioned technical problem took and be:

the utility model provides a device for high-efficiently draw sea water micro-plastic includes the liquid storage bottle, the pipette, filtering mechanism, the psammitolite filters the base, microfiltration membrane, waste liquid bottle and evacuation air pump, the inboard bottom of liquid storage bottle is stretched into to the one end of pipette, the other end rigid coupling of pipette is in filtering mechanism's upper end, filtering mechanism's lower extreme rigid coupling is in the upper end of psammitolite filters the base, the inside rigid coupling that the psammitolite filtered the base has microfiltration membrane, the lower extreme suit of psammitolite filters the base is at the bottleneck of waste liquid bottle, the psammitolite filters one side of base and is connected with the evacuation pipe, the outside end and the evacuation air pump of evacuation pipe are connected.

Further, the filtering mechanism comprises a sealing cover and a plurality of screen mechanisms, the screen mechanisms are coaxially and fixedly connected from top to bottom in sequence, the upper end of the screen mechanism at the top is fixedly connected with the sealing cover, the other end of the pipette is fixedly connected onto the sealing cover in an inserted mode, and the lower end of the screen mechanism at the bottom is fixedly connected with the upper end of the sand core filtering base.

Furthermore, the screen mesh apertures of the plurality of screen mechanisms decrease progressively from top to bottom.

Furthermore, the upper end rigid coupling of stock solution bottle has sealed bottle lid, and the one end of pipette passes sealed bottle lid back downwardly extending to the bottle bottom of stock solution bottle.

Further, the microporous filter membrane is an ultrafine glass fiber filter membrane.

Furthermore, the lower end of the waste liquid bottle is connected with a liquid discharge pipe, and a liquid discharge valve is arranged on the liquid discharge pipe.

Furthermore, the sand core filtering base is made of glass materials, and the inner side wall of the lower end of the sand core filtering base is subjected to ground processing.

Furthermore, the waste liquid bottle is made of high-silicon boron glass, and the outer side wall of the bottle mouth of the waste liquid bottle is processed by grinding.

Furthermore, the liquid storage bottle is made of high-silicon boron glass.

Furthermore, the body of the liquid storage bottle and the body of the waste liquid bottle are both provided with scale marks along the height direction.

Compared with the prior art, the utility model the beneficial effect who contains is:

the utility model provides a device of sea water micro-plastic is drawed to high efficiency, this device simple structure, the equipment is convenient, and the operation degree of difficulty is low, and portable can effectively solve the problem that micro-plastic extraction efficiency is low and experimental effect is poor among the traditional extraction element. Simultaneously, the device can flexibly set a plurality of screen mechanisms according to experiment requirements, impurities with different particle sizes in the sample are intercepted in advance, interference of the impurities during detection of a follow-up instrument is avoided, and the follow-up analysis efficiency and the detection accuracy of the micro-plastic are greatly improved.

Drawings

FIG. 1 is a front view of the overall structure of the present invention, wherein the direction of the arrows indicates the direction of water flow;

fig. 2 is a front view of the liquid storage bottle 1 of the present invention;

fig. 3 is a front view of the waste liquid bottle 5 of the present invention;

fig. 4 is a front view of the sealing cover 8 of the present invention;

fig. 5 is a front view of the screen mechanism 9 of the present invention;

fig. 6 is a front view of the sand core filtering base 3 of the present invention.

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 6, and the device for efficiently extracting seawater micro-plastic in the embodiment comprises a liquid storage bottle 1, a liquid transfer pipe 2, a filtering mechanism, a sand core filtering base 3, a microporous filtering membrane 4, a waste liquid bottle 5 and a vacuum pumping pump 6, wherein one end of the liquid transfer pipe 2 extends into the bottom of the inner side of the liquid storage bottle 1, the other end of the liquid transfer pipe 2 is fixedly connected to the upper end of the filtering mechanism, the lower end of the filtering mechanism is fixedly connected to the upper end of the sand core filtering base 3, the inner part of the sand core filtering base 3 is fixedly connected with the microporous filtering membrane 4, the lower end of the sand core filtering base 3 is sleeved at the opening of the waste liquid bottle 5, one side of the sand core filtering base 3 is connected with the vacuum pumping pipe 7, and the outer side end of the vacuum pumping pipe 7 is connected with the vacuum pumping pump 6.

The sand core filtering base 3 comprises a filtering funnel and a fixed sleeve head, the tip of the lower end of the filtering funnel is vertically inserted and fixed on the upper end face of the fixed sleeve head, the lower end of the fixed sleeve head is sleeved outside the bottle mouth of the waste liquid bottle 5, the upper end of the fixed sleeve head is arranged on the upper portion of the waste liquid bottle 5, and the vacuumizing pipe 7 is arranged on one side of the upper end of the fixed sleeve head.

The vacuum pumping air pump 6 can be an SHZ-D (III) circulating water type multipurpose vacuum pump.

The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 6, in which the filtering mechanism of the present embodiment includes a sealing cover 8 and a plurality of screen mechanisms 9, the plurality of screen mechanisms 9 are coaxially fixedly connected in sequence from top to bottom, the upper end of the screen mechanism 9 at the uppermost end is fixedly connected to the sealing cover 8, the other end of the pipette 2 is fixedly connected to the sealing cover 8 by inserting, and the lower end of the screen mechanism 9 at the lowermost end is fixedly connected to the upper end of the sand core filtering base 3. Other components and connection modes are the same as those of the first embodiment.

Because the seawater environment sample contains a plurality of impurity branches, silt and the like, the screen can be used for intercepting the impurities with different particle sizes in the sample with great efficiency, so that the impurities collected on the filter membrane are reduced finally, the interference of the impurities during the detection of a subsequent instrument is avoided, and the analysis efficiency is improved.

The screen cloth mechanism 9 comprises a screen cloth and positioning sleeves, the inner diameter of the upper end of each positioning sleeve is larger than that of the lower end of each positioning sleeve, the screen cloth is fixed in the middle of each positioning sleeve, between every two adjacent screen cloth mechanisms 9, the lower end of each upper positioning sleeve is inserted into the upper end of each lower positioning sleeve, and the positioning sleeves are sequentially stacked.

The screen is a steel screen.

The third concrete implementation mode: referring to fig. 1 to 6, the screen aperture of the plurality of screen mechanisms 9 of the present embodiment decreases from top to bottom. Other components and connection modes are the same as those of the second embodiment.

The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 6, in which a sealing cap 10 is fixed to an upper end of the liquid storage bottle 1, and one end of the pipette 2 passes through the sealing cap 10 and then extends downward to a bottom of the liquid storage bottle 1. Other components and connection modes are the same as those of the first embodiment.

The sealing bottle cap 10 is made of plastic, and the pipette 2 is made of glass.

The fifth concrete implementation mode: referring to fig. 1 to 6, the embodiment will be described, in which the microporous filter membrane 4 is a microfiber filter membrane. Other components and connection modes are the same as those of the first embodiment.

The diameter of the superfine glass fiber filter membrane is 47mm, the aperture is 5 mu m, and the superfine glass fiber filter membrane is covered on the sand core filter base 3. The filter membrane with proper pore diameter and material can be selected according to the experimental condition.

The sixth specific implementation mode: in the present embodiment, a liquid discharge pipe 11 is connected to the lower end of the waste liquid bottle 5, and a liquid discharge valve is provided on the liquid discharge pipe 11, as described with reference to fig. 1 to 6. Other components and connection modes are the same as those of the first embodiment.

Because the experimental sample volume is big, increase the delivery port and can avoid artifical constantly to dismantle whole experimental apparatus pouring, need not demolish waste liquid bottle 5 and pour the filtrating again, only need open the bottom flowing back valve can the flowing back fast, greatly improve experimental efficiency to avoid appearing the instrument and collide with, the evacuation air pump scheduling problem of intaking.

The seventh embodiment: the present embodiment will be described with reference to fig. 1 to 6, in which the sand core filter base 3 is made of a glass material, and the inner side wall of the lower end of the sand core filter base 3 is ground. Other components and connection modes are the same as those of the first embodiment.

The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 to 6, in which the waste liquid bottle 5 is made of high silicon boron glass, and the outer side wall of the bottle mouth of the waste liquid bottle 5 is ground. The other components and the connection mode are the same as those of the seventh embodiment.

The inside wall of 3 lower extremes of psammitolite filter base of design and the lateral wall of 5 bottlenecks of waste liquid bottle all process the mill mouth and handle, can effectively seal up on the one hand, and on the other hand prevents that the tension of water from closely adsorbing between the two together, is not convenient for dismantle.

The specific implementation method nine: the present embodiment will be described with reference to fig. 1 to 6, and the liquid storage bottle 1 of the present embodiment is made of a high silicon boron glass material. Other components and connection modes are the same as those of the first embodiment.

The detailed implementation mode is ten: in the present embodiment, the liquid storage bottle 1 and the waste liquid bottle 5 are provided with scale marks along the height direction, which is described with reference to fig. 1 to 6. Other components and connection modes are the same as those of the first embodiment.

Principle of operation

1. Covering a microporous filter membrane 4 on the sand core filtering base 3;

2. pouring 2-5L of seawater sample into the liquid storage bottle 1, and covering the container;

3. selecting steel screens with different meshes according to the conditions of the sample, installing a plurality of screen mechanisms 9, connecting parts and ensuring the air tightness;

4. the vacuumizing air pump 6 is turned on, the seawater sample is automatically sucked into the filtering mechanism from the liquid storage bottle 1 through the pipette 2 under the action of the vacuumizing air pump 6, most impurities in the sample can be intercepted after the sample is filtered by steel screens with different meshes, then the seawater is filtered through the microporous filter membrane 4 in the sand core filtering base 3, and the micro plastic in the seawater can be retained on the microporous filter membrane 4;

5. when the water in the waste liquid bottle 5 is too much, the vacuum-pumping air pump 6 is closed, a liquid discharge valve on the liquid discharge pipe 11 is opened to discharge the waste liquid, and the vacuum-pumping air pump 6 is opened to continue filtering and separating after the waste liquid is discharged;

6. and after all filtration is finished, the micro plastic filtered out from the microporous filter membrane 4 is collected in a centralized way, and the extraction of the micro plastic is finished.

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 is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a device of sea water micro-plastic is drawed to high efficiency which characterized in that: it includes liquid storage bottle (1), pipette (2), filtering mechanism, psammitolite filters base (3), microfiltration membrane (4), waste liquid bottle (5) and evacuation air pump (6), the inboard bottom of liquid storage bottle (1) is stretched into to the one end of pipette (2), the other end rigid coupling of pipette (2) is in filtering mechanism's upper end, filtering mechanism's lower extreme rigid coupling is in the upper end of psammitolite filters base (3), the inside rigid coupling of psammitolite filters base (3) has microfiltration membrane (4), the lower extreme suit of psammitolite filters base (3) is at the bottleneck of waste liquid bottle (5), one side of psammitolite filters base (3) is connected with evacuation pipe (7), the outside end and the evacuation air pump (6) of evacuation pipe (7) are connected.

2. The device for efficiently extracting seawater micro plastic as claimed in claim 1, wherein: the filtering mechanism comprises a sealing cover (8) and a plurality of screen mechanisms (9), the screen mechanisms (9) are sequentially and coaxially fixedly connected from top to bottom, the upper end of the screen mechanism (9) at the top is fixedly connected with the sealing cover (8), the other end of the pipette (2) is fixedly connected onto the sealing cover (8) in an inserting manner, and the lower end of the screen mechanism (9) at the bottom is fixedly connected with the upper end of the sand core filtering base (3).

3. The device for efficiently extracting seawater micro plastic as claimed in claim 2, wherein: the screen mesh apertures of the screen mesh mechanisms (9) are sequentially decreased progressively from top to bottom.

4. The device for efficiently extracting seawater micro-plastics as claimed in claim 1, wherein: the upper end rigid coupling of stock solution bottle (1) has sealed bottle lid (10), and the one end of pipette (2) is passed sealed bottle lid (10) and is followed the bottle bottom of downwardly extending stock solution bottle (1).

5. The device for efficiently extracting seawater micro plastic as claimed in claim 1, wherein: the microporous filter membrane (4) is a superfine glass fiber filter membrane.

6. The device for efficiently extracting seawater micro-plastics as claimed in claim 1, wherein: the lower end of the waste liquid bottle (5) is connected with a liquid discharge pipe (11), and a liquid discharge valve is arranged on the liquid discharge pipe (11).

7. The device for efficiently extracting seawater micro-plastics as claimed in claim 1, wherein: the sand core filtering base (3) is made of glass materials, and the inner side wall of the lower end of the sand core filtering base (3) is ground.

8. The device for efficiently extracting seawater micro-plastics as claimed in claim 7, wherein: the waste liquid bottle (5) is made of high-silicon boron glass, and the outer side wall of the bottle mouth of the waste liquid bottle (5) is processed by grinding.

9. The device for efficiently extracting seawater micro-plastics as claimed in claim 1, wherein: the liquid storage bottle (1) is made of high-silicon boron glass.

10. The device for efficiently extracting seawater micro plastic as claimed in claim 1, wherein: the body of the liquid storage bottle (1) and the body of the waste liquid bottle (5) are provided with scale marks along the height direction.