Environmental micro-plastic grading, separating and filtering device

Abstract

The utility model relates to the technical field of micro-plastic separation, and discloses an environmental micro-plastic grading, separating and filtering device which comprises a suction filtration pump, a hose is fixedly connected to the left end of the suction filtration pump, a sealing cover penetrates through the other end of the hose, a conical flask is arranged on the inner wall of the sealing cover, a funnel is arranged at the top end of the sealing cover, and a filter screen is fixedly connected to the inner wall of the funnel. A plurality of grading screen drums are arranged at the top end of the funnel, fixing rings are arranged at the bottom ends of the grading screen drums, and grading screens are fixedly connected to the inner walls of the fixing rings. According to the device disclosed by the utility model, a pretreated micro-plastic-containing supernatant or reagent solution is poured into the upper opening of the grading screen drum at the uppermost end, and is subjected to vacuum suction filtration through the suction filtration pump, so that the supernatant is separated through the grading screens with different pore diameters in sequence, and after the separation is finished, only the fixing clamp II between every two adjacent grading screen drums needs to be opened, and then the grading screen drums can be separated. Micro-plastics with different particle sizes can be obtained from different grading screen drums, the disassembly is convenient and fast, and the collection of samples and the cleaning of the device are easy after the separation is finished.

Description

Technical Field

[0001] The utility model relates to the technical field of microplastic separation, in particular to an environmental microplastic graded separation and filtering device. Background Art

[0002] Plastic is one of the most common materials in our lives, with annual global production and usage reaching hundreds of millions of tons. The relevant technical standards and specifications have stipulated the particle size range of microplastics, which is mainly 0.1mm~5mm or 0.05mm~5mm. Due to its difficult to degrade properties, it can remain in the natural environment for a long time, posing a great risk to the ecological environment and human health. Therefore, how to filter out microplastics from the natural environment for graded separation research has become one of the issues that urgently need to be studied and solved.

[0003] In order to better obtain microplastics in the corresponding particle size range, microplastics in the range of 0.1mm to 5mm are screened and classified. It is now necessary to make a set of microplastic grading and separation filtration devices to facilitate disassembly and cleaning. The supernatant containing microplastics obtained from the pretreatment processes such as flotation, digestion, and secondary flotation is vacuum filtered to obtain microplastic samples in different ranges. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an environmental microplastic grading and separation filtering device, which can obtain microplastic samples in different ranges and is easy to disassemble and clean.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An environmental microplastic grading and separation filtering device comprises a suction filter pump, wherein the left end of the suction filter pump is connected to a sealing cover via a suction filter assembly, and the top end of the sealing cover is connected to a fixing ring via a grading assembly.

[0007] Furthermore, the suction filtration assembly includes a hose located at the left end of the suction filtration pump, the other end of the hose is passed through the right end of the sealing cover, and a conical bottle is arranged on the inner wall of the sealing cover.

[0008] Furthermore, the grading component includes a funnel located at the top of the sealing cover, a filter screen is fixedly connected to the inner wall of the funnel, a plurality of grading screen cylinders are arranged at the top of the funnel, the top of the fixed ring is arranged at the bottom of the grading screen cylinder, and the inner wall of the fixed ring is fixedly connected to the grading screen.

[0009] Furthermore, the bottom end of the grading screen cylinder on the bottom side is connected to the top of the funnel through a fixing ring, and adjacent grading screen cylinders are connected through fixing rings.

[0010] Furthermore, the outer wall of the funnel is provided with a fixing clamp 1, the grading screen cylinder on the bottom side and the funnel are fixed by the fixing clamp 1, the outer wall of the grading screen cylinder is provided with a fixing clamp 2, and multiple adjacent grading screen cylinders are fixed by the fixing clamp 2.

[0011] Furthermore, the apertures of the plurality of graded sieves are 5000 μm, 3000 μm, 1000 μm, 500 μm, 300 μm and 100 μm from top to bottom respectively.

[0012] Furthermore, the upper diameters of the plurality of grading sieve cylinders are all 60 mm, and the materials of the plurality of grading sieve cylinders are all stainless steel or glass.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, through the cooperation of the fixing clamp 1 with the grading screen cylinder, the fixing clamp 2, the fixing ring and the grading screen, the device can directly classify microplastics into microplastic samples of different particle size ranges without the need for transfer, and can be directly analyzed, saving time, improving efficiency, and facilitating disassembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of an environmental microplastic classification and separation filtering device proposed by the utility model;

[0016] Figure 2 This is an exploded view of an environmental microplastic grading and separation filtering device proposed by the utility model;

[0017] Figure 3 This is an exploded view of the hierarchical structure of an environmental microplastic grading, separation and filtration device proposed by the utility model.

[0018] Legend:

[0019] 1. Filter pump; 2. Hose; 3. Conical flask; 4. Sealing cover; 5. Fixing clamp 1; 6. Grading screen cylinder; 7. Fixing clamp 2; 8. Funnel; 9. Filter screen; 10. Fixing ring; 11. Grading screen. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-3, an embodiment provided by the utility model: an environmental microplastic grading and separation filtering device, comprising a suction filter pump 1, a hose 2 is fixedly connected to the left end of the suction filter pump 1, a sealing cover 4 is passed through the other end of the hose 2, a conical bottle 3 is arranged on the inner wall of the sealing cover 4, a funnel 8 is arranged on the top of the sealing cover 4, a filter screen 9 is fixedly connected to the inner wall of the funnel 8, a plurality of grading screen cylinders 6 are arranged on the top of the funnel 8, a fixing ring 10 is arranged at the bottom end of the grading screen cylinder 6, a grading screen 11 is fixedly connected to the inner wall of the fixing ring 10, the bottom end of the bottom grading screen cylinder 6 is connected to the top of the funnel 8 through the fixing ring 10, and a plurality of Adjacent grading screen cylinders 6 are connected by fixing rings 10, the outer wall of the funnel 8 is provided with a fixing clip 15, the bottom grading screen cylinder 6 and the funnel 8 are fixed by the fixing clip 15, the outer wall of the grading screen cylinder 6 is provided with a fixing clip 27, and multiple grading screen cylinders 6 are fixed by the fixing clip 27, the apertures of multiple grading screens 11 are 5000μm, 3000μm, 1000μm, 500μm, 300μm, 100μm from top to bottom, the upper diameters of multiple grading screen cylinders 6 are all 60mm, and the materials of multiple grading screen cylinders 6 are all stainless steel or glass;

[0022] Specifically, a reagent bottle containing pre-treated supernatant containing microplastics is inverted on the upper mouth of the uppermost grading sieve cylinder 6, and then fixed by a fixing clamp 7, and the suction pump 1 is started to perform vacuum filtration on the inside of the conical flask 3 through the hose 2, so that the supernatant containing microplastics passes through the grading sieves 11 with different apertures in turn, and plastics of different particle sizes are separated. After separation, the remaining liquid is injected into the conical flask 3 through the funnel 8 to prevent contamination of the desktop. The filter screen 9 on the inner wall of the funnel 8 blocks the plastic particles with smaller particle sizes from being sucked into the filtration pump 1 by the hose 2. After separation, there is no need for multiple transfers, which saves time and improves efficiency. After separation and filtration, only the fixing clamp 7 between each adjacent grading sieve cylinder 6 needs to be opened and removed to obtain microplastics of different particle sizes from different grading sieve cylinders 6. Disassembly is convenient and easy to collect samples and clean the device after separation.

[0023] Working principle: Invert the reagent bottle containing the pre-treated supernatant containing microplastics on the upper mouth of the uppermost grading sieve cylinder 6, and then fix it with the fixing clamp 2 7, start the suction pump 1 to perform vacuum filtration on the inside of the conical flask 3 through the hose 2, so that the supernatant containing microplastics passes through the grading sieves 11 with different apertures in turn, and the plastics of different particle sizes are separated. After separation, the remaining liquid is injected into the conical flask 3 through the funnel 8 to prevent contamination of the desktop. The filter screen 9 on the inner wall of the funnel 8 blocks the plastic particles with smaller particle sizes from the outside to prevent them from being sucked into the suction pump 1 by the hose 2. After the separation is completed at one time, there is no need for multiple transfers, which saves time and improves efficiency. After the separation and filtration is completed, only the fixing clamp 2 7 between each adjacent grading sieve cylinder 6 needs to be opened and removed, and microplastics of different particle sizes can be obtained from different grading sieve cylinders 6. The disassembly is convenient and easy to collect samples and clean the device after the separation is completed.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An environmental microplastic fractionation and filtration device, comprising a suction filtration pump (1), characterized in that: The left end of the suction filter pump (1) is connected to a sealing cover (4) via a suction filter assembly, and the top end of the sealing cover (4) is connected to a fixing ring (10) via a grading assembly.

2. The environmental microplastic fractionation and filtration device according to claim 1, characterized in that: The suction filtration assembly comprises a hose (2) located at the left end of the suction filtration pump (1), the other end of the hose (2) is passed through the right end of the sealing cover (4), and a conical bottle (3) is arranged on the inner wall of the sealing cover (4).

3. The environmental microplastic classification and separation filtration device according to claim 1, characterized in that: The grading component comprises a funnel (8) located at the top of the sealing cover (4), a filter screen (9) is fixedly connected to the inner wall of the funnel (8), a plurality of grading screen cylinders (6) are arranged at the top of the funnel (8), the top of the fixing ring (10) is arranged at the bottom of the grading screen cylinder (6), and the inner wall of the fixing ring (10) is fixedly connected to the grading screen (11).

4. The environmental microplastic classification and separation filtering device according to claim 3, characterized in that: The bottom end of the grading screen cylinder (6) on the bottom side is connected to the top of the funnel (8) via a fixing ring (10), and adjacent grading screen cylinders (6) are connected via fixing rings (10).

5. The environmental microplastic classification and separation filtering device according to claim 3, characterized in that: The outer wall of the funnel (8) is provided with a fixing clamp 1 (5), the grading screen cylinder (6) and the funnel (8) on the bottom side are fixed by the fixing clamp 1 (5), the outer wall of each grading screen cylinder (6) is provided with a fixing clamp 2 (7), and adjacent grading screen cylinders (6) are fixed by the fixing clamp 2 (7).

6. The environmental microplastic classification and separation filtering device according to claim 3, characterized in that: The apertures of the plurality of grading screens (11) are 5000 μm, 3000 μm, 1000 μm, 500 μm, 300 μm and 100 μm respectively from top to bottom.

7. The environmental microplastic classification and separation filtering device according to claim 3, characterized in that: The upper diameters of the plurality of grading sieve cylinders (6) are all 60 mm, and the materials of the plurality of grading sieve cylinders (6) are all stainless steel or glass.

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