CN214345647U - Filtering membrane for filtering and purifying molecules - Google Patents
Filtering membrane for filtering and purifying molecules Download PDFInfo
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- CN214345647U CN214345647U CN202022612879.9U CN202022612879U CN214345647U CN 214345647 U CN214345647 U CN 214345647U CN 202022612879 U CN202022612879 U CN 202022612879U CN 214345647 U CN214345647 U CN 214345647U
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- 238000001914 filtration Methods 0.000 title claims abstract description 333
- 239000012528 membrane Substances 0.000 title claims abstract description 315
- 239000000835 fiber Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910021389 graphene Inorganic materials 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- -1 graphite alkene Chemical class 0.000 claims description 2
- 241000264877 Hippospongia communis Species 0.000 description 70
- 239000000126 substance Substances 0.000 description 14
- 230000004888 barrier function Effects 0.000 description 12
- 229920002521 macromolecule Polymers 0.000 description 9
- 230000007935 neutral effect Effects 0.000 description 8
- 239000011800 void material Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 229920001410 Microfiber Polymers 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002605 large molecules Chemical class 0.000 description 2
- 239000003658 microfiber Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
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Abstract
The utility model relates to a filter and purify filtration membrane of molecule, including honeycomb filtration membrane I, middle filter layer and honeycomb filtration membrane II, honeycomb filtration membrane I is for scribbling the filtration membrane of taking positive charge, middle filter layer is for not taking the filtration membrane of any electron, honeycomb filtration membrane II is scribbling the filtration membrane of taking the negative charge, middle filter layer makes an overall structure's filtration membrane with honeycomb filtration membrane I and honeycomb filtration membrane II, this filtration membrane is hollow structure, this filtration membrane's hollow region forms the space district, filtration method: when the device is installed, the filtering membrane for filtering and purifying molecules is installed on a device pipeline for purifying and filtering molecules, the middle filtering layer is connected with an outlet on the device pipeline, the mixed molecules are filtered by the middle filtering layer to enter a gap area of the filtering membrane and then are filtered by the honeycomb filtering membrane I and the honeycomb filtering membrane II from the gap area respectively, and molecules with positive charges and molecules with negative charges are obtained respectively.
Description
Technical Field
The utility model relates to a filter membrane, in particular to a filter membrane for filtering and purifying molecules.
Background
The filtering membrane is common in industry and mainly used for filtering, a plurality of mixed molecules can occur in industry at present, the mixed molecules need to be filtered, and the existing filtering membrane has a single composition, so that the problem can not be well solved.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: provides a filtering membrane for filtering and purifying molecules so as to solve the problem of separating mixed molecules in the prior industry.
The technical scheme for solving the technical problems is as follows: a filtering membrane for filtering and purifying molecules comprises a honeycomb-shaped filtering membrane I, an intermediate filtering layer and a honeycomb-shaped filtering membrane II, wherein the honeycomb-shaped filtering membrane I is a filtering membrane coated with positive charges, the intermediate filtering layer is a filtering membrane without any electrons, the honeycomb-shaped filtering membrane II is a filtering membrane coated with negative charges, the intermediate filtering layer, the honeycomb-shaped filtering membrane I and the honeycomb-shaped filtering membrane II are manufactured into a filtering membrane with an integral structure, the filtering membrane is of a hollow structure, a gap area is formed in the hollow area of the filtering membrane, and the honeycomb-shaped filtering membrane I, the intermediate filtering layer and the honeycomb-shaped filtering membrane II are respectively connected with one another to form the hollow filtering membrane for filtering and purifying molecules; the middle filter layer is an inlet of the filter membrane, and the honeycomb filter membrane are outlets of the filter membrane respectively. The filtering method comprises the following steps: when the device is installed, the filtering membrane for filtering and purifying molecules is installed on a device pipeline for purifying and filtering molecules, the middle filtering layer is connected with an outlet on the device pipeline, the mixed molecules are filtered by the middle filtering layer to enter a gap area of the filtering membrane and then are filtered by the honeycomb filtering membrane I and the honeycomb filtering membrane II from the gap area respectively, and molecules with positive charges and molecules with negative charges are obtained respectively.
The utility model discloses a further technical scheme is: the middle filter layer is provided with filter holes.
Honeycomb filtration membrane I is the membrane of making with fibre or nanometer and graphite alkene material, honeycomb filtration membrane I includes honeycomb filtration rete I, honeycomb filtration rete II and honeycomb filtration rete III, honeycomb filtration rete II is located between honeycomb filtration rete I and the honeycomb filtration rete III, honeycomb filtration rete I is for being equipped with the filter membrane of heliciform filtration pore, honeycomb filtration rete II is the filter membrane that is fibre network structure, honeycomb filtration rete III is for being equipped with the filter membrane of foot process.
The honeycomb-shaped filtering membrane II is a membrane made of fibers or nano and graphene materials, and comprises a honeycomb-shaped filtering membrane layer IV, a honeycomb-shaped filtering membrane layer V and a honeycomb-shaped filtering membrane layer VI, the honeycomb-shaped filtering membrane layer V is located between the honeycomb-shaped filtering membrane layer IV and the honeycomb-shaped filtering membrane layer VI, the honeycomb-shaped filtering membrane layer IV is a filtering membrane with spiral filtering holes, the honeycomb-shaped filtering membrane layer V is a filtering membrane with a fiber net-shaped structure, and the honeycomb-shaped filtering membrane layer is a filtering membrane with foot protrusions.
The filtering membrane for filtering and purifying molecules is of a square structure, the upper end face and the lower end face of the filtering membrane are respectively a honeycomb-shaped filtering membrane I and a honeycomb-shaped filtering membrane II, the left end face and the right end face of the filtering membrane are respectively middle filtering layers, the front end face and the rear end face of the filtering membrane can be respectively the connecting part of the honeycomb-shaped filtering membrane I and the honeycomb-shaped filtering membrane II, or the front end face and the rear end face of the filtering membrane can be respectively of a structure which can not be communicated with any molecules.
Due to the adoption of the technical scheme, the utility model relates to a filter membrane of filtration purification molecule has following beneficial effect:
the utility model discloses a honeycomb filtration membrane, middle filter layer and honeycomb filtration membrane, honeycomb filtration membrane are for scribbling the filtration membrane of taking the positive charge, and middle filter layer is for not taking the filtration membrane of any electron, and honeycomb filtration membrane is for scribbling the filtration membrane of taking the negative charge. The honeycomb-shaped filtering membrane, the middle filtering layer and the honeycomb-shaped filtering membrane are respectively connected with each other to form a hollow filtering membrane for filtering and purifying molecules, when the filtering membrane is used, the middle filtering layer is connected with an outlet on an equipment pipeline, mixed molecules are filtered by the middle filtering layer to enter a clearance area of the filtering membrane, and then are filtered by the honeycomb-shaped filtering membrane and the honeycomb-shaped filtering membrane from the clearance area, and molecules with positive charges and molecules with negative charges are respectively obtained, so that the problem of separating the mixed molecules in the existing industry is solved. The utility model has simple structure, low price and stable performance; is slightly influenced by environmental factors and has wide industrial application. Has great market popularization value in the industrial field.
The technical features of a filtration membrane for filtering and purifying molecules according to the present invention will be further described with reference to the drawings and the specific examples.
Drawings
FIG. 1: a schematic structure of a filtration membrane for filtering purified molecules.
In the above drawings, the respective reference numerals are explained as follows:
1-honeycomb filter membrane I, 1-1-honeycomb filter membrane layer I, 1-2-honeycomb filter membrane layer II, 1-3-honeycomb filter membrane layer III, 3-honeycomb filter membrane II, 3-1-honeycomb filter membrane layer IV, 3-2-honeycomb filter membrane layer V, 3-3-honeycomb filter membrane layer VI, 2-middle filter layer, 4-void zone and 5-filter membrane.
Detailed Description
A filtering membrane for filtering and purifying molecules comprises a honeycomb filtering membrane I1, an intermediate filtering layer 2 and a honeycomb filtering membrane II 3, wherein the honeycomb filtering membrane I1, the intermediate filtering layer 2 and the honeycomb filtering membrane II 3 are respectively filtering membranes with different charges, the honeycomb filtering membrane I1 is a filtering membrane coated with positive charges, the intermediate filtering layer 2 is a filtering membrane without any electron, the honeycomb filtering membrane II 3 is a filtering membrane coated with negative charges, the intermediate filtering layer 2, the honeycomb filtering membrane I1 and the honeycomb filtering membrane II 3 are manufactured into an integral-structure filtering membrane, the filtering membrane is of a hollow structure, a gap area 4 is formed in the hollow area of the filtering membrane, namely the honeycomb filtering membrane I1, the intermediate filtering layer 2 and the honeycomb filtering membrane II 3 are respectively connected with one another to form the hollow filtering membrane for filtering and purifying molecules, and the intermediate filtering layer 2 is an inlet of the filtering membrane, the honeycomb filter membrane I1 and the honeycomb filter membrane II 3 are respectively outlets of the filter membranes. The filtering method comprises the following steps: when the device is installed, the filtering membrane for filtering and purifying molecules is installed on a device pipeline for purifying and filtering molecules, the middle filtering layer 2 is connected with an outlet on the device pipeline, the mixed molecules are filtered by the middle filtering layer 2 and enter a gap area 4 of the filtering membrane, and then are filtered by the honeycomb filtering membrane I1 and the honeycomb filtering membrane II 3 from the gap area 4 respectively, and molecules with positive charges and molecules with negative charges are obtained respectively. The middle filter layer 2 is provided with filter holes. The honeycomb-shaped filtering membrane I1 is a membrane made of fibers or nano and graphene materials, the honeycomb-shaped filtering membrane I1 comprises a honeycomb-shaped filtering membrane layer I1-1, a honeycomb-shaped filtering membrane layer II 1-2 and a honeycomb-shaped filtering membrane layer III 1-3, the honeycomb-shaped filtering membrane layer II 1-2 is located between the honeycomb-shaped filtering membrane layer I1-1 and the honeycomb-shaped filtering membrane layer III 1-3, the honeycomb-shaped filtering membrane layer I1-1 is a filtering membrane with spiral filtering holes, the honeycomb-shaped filtering membrane layer II 1-2 is a filtering membrane with a fiber net-shaped structure, and the honeycomb-shaped filtering membrane layer III 1-3 is a filtering membrane with a foot protrusion. The honeycomb-shaped filtering membrane II 3 is a membrane made of fibers or nano and graphene materials, the honeycomb-shaped filtering membrane II 3 comprises a honeycomb-shaped filtering membrane layer IV 3-1, a honeycomb-shaped filtering membrane layer V3-2 and a honeycomb-shaped filtering membrane layer VI 3-3, the honeycomb-shaped filtering membrane layer V3-2 is positioned between the honeycomb-shaped filtering membrane layer IV 3-1 and the honeycomb-shaped filtering membrane layer VI 3-3, the honeycomb-shaped filtering membrane layer IV 3-1 is a filtering membrane with spiral filtering holes, the honeycomb-shaped filtering membrane layer V3-2 is a filtering membrane with a fiber net structure, and the honeycomb-shaped filtering membrane layer 3-3 is a filtering membrane with a foot protrusion. The filtering membrane for filtering and purifying molecules is of a square structure, the upper end face and the lower end face of the filtering membrane are respectively a honeycomb filtering membrane I1 and a honeycomb filtering membrane II 3, the left end face and the right end face of the filtering membrane are respectively an intermediate filtering layer 2, the front end face and the rear end face of the filtering membrane can be respectively the connecting part of the honeycomb filtering membrane I1 and the honeycomb filtering membrane II 3, or the front end face and the rear end face of the filtering membrane can be respectively of a structure which can not be communicated with any molecules. Or, middle filter layer 2 is the hollow structure who is made by the filtration membrane that does not take any electron, honeycomb filtration membrane I1 and honeycomb filtration membrane II 3 are located upper end face and the lower terminal surface of middle filter layer 2 respectively, the lateral wall of middle filter layer 2 is the entry, the filtration pore has been seted up to the entry of middle filter layer 2, honeycomb filtration membrane I1 and honeycomb filtration membrane II 3 set up respectively on the upper end surface of middle filter layer 2 and lower extreme surface promptly, the material filters the void zone 4 that gets into middle filter layer 2 through the filtration membrane that does not take any electron from the lateral wall of middle filter layer 2 during the use, then filter through honeycomb filtration membrane I1 and honeycomb filtration membrane II 3 respectively from void zone 4, finally obtain the material that charges to the positive electricity and the material that charges to the negative electricity respectively. The honeycomb-shaped filtering membrane layer I1-1, the honeycomb-shaped filtering membrane layer II 1-2 and the honeycomb-shaped filtering membrane layer III 1-3 are respectively the same membrane, but the shapes of filter holes in the honeycomb-shaped filtering membrane layer I1-1, the honeycomb-shaped filtering membrane layer II 1-2 and the honeycomb-shaped filtering membrane layer III 1-3 are different, and an integral filtering membrane is synthesized. Similarly, the honeycomb-shaped filtering membrane layer IV 3-1, the honeycomb-shaped filtering membrane layer V3-2 and the honeycomb-shaped filtering membrane layer VI 3-3 are respectively the same membrane, but the shapes of filtering holes in the honeycomb-shaped filtering membrane layer IV 3-1, the honeycomb-shaped filtering membrane layer V3-2 and the honeycomb-shaped filtering membrane layer VI 3-3 are different, an integral filtering membrane is synthesized, and the electronic polarity on the filtering membrane can be found from materials or can be coated by a process. The fiber, nano or graphene and other materials can be attached with positive electron or negative electron after being processed. Therefore, the honeycomb-shaped filter membrane I1 and the honeycomb-shaped filter membrane II 3 can be coated with electrons on materials or made into membranes with electron polarity through a process.
The specific embodiment is as follows: a filtering membrane for filtering and purifying molecules mainly comprises a honeycomb filtering membrane I1, a honeycomb filtering membrane layer I1-1, a honeycomb filtering membrane layer II 1-2, a honeycomb filtering membrane layer III 1-3, a honeycomb filtering membrane II 3, a honeycomb filtering membrane layer IV 3-1, a honeycomb filtering membrane layer V3-2, a honeycomb filtering membrane layer 3-3, a middle filtering layer 2 and a gap area 4. All the filter membrane layers are respectively designed into a whole and can be designed into round or square honeycombs and other different shapes. The neutral filter layer 2, the honeycomb filter membrane I1 and the honeycomb filter membrane II 3 are manufactured into an integral filter membrane for filtering and purifying molecules, a gap area 4 is designed in the middle of the integral filter membrane, and the outer part of the integral filter membrane is designed into an outer layer which can not be communicated with any molecules. The molecular substance enters the void area 4 through the neutral filter layer 2, then is divided into positive and negative electrons to respectively enter the honeycomb filter membrane I1 and the honeycomb filter membrane II 3, and is filtered out from the honeycomb filter membrane I1 and the honeycomb filter membrane II 3, so that the purposes of purification and filtration are achieved. As is a filtration membrane assembly 5 designed to filter purified molecules.
The honeycomb-shaped filtering membrane I1 is a membrane coated with positive charges, the membrane can be made of fibers or nano and graphene materials, the structure of the honeycomb-shaped filtering membrane layer I1-1 is designed into a spiral filtering membrane, and filtering membrane holes (filtering holes) of a spiral structure are arranged on the honeycomb-shaped filtering membrane layer I1-1. Positive charges coated on the honeycomb-shaped filtering membrane layer I1-1 play a role of a charge barrier; the size of the filtration membrane pores corresponds to a mechanical barrier that prevents passage of large molecules larger than the diameter of the filtration membrane pores. The structure of the honeycomb-shaped filtering membrane layer II 1-2 is designed to be a microfiber net structure, and positive charges on the honeycomb-shaped filtering membrane layer II 1-2 play a role of a charge barrier; the size of the filtration membrane pores on the fiber network structure is equivalent to a mechanical barrier, and macromolecules larger than the diameter of the fiber network structure pores can be prevented from passing through the filtration membrane pores. The structure of the honeycomb-shaped filtering membrane layer III 1-3 is designed to be provided with foot processes, and cracks are formed between the foot processes which are staggered with each other. The slit has a slit diaphragm for filtration, and the slit diaphragm has a hole with a diameter which can prevent the macromolecule 5 filtered by the inner layer and the middle layer from passing through and is the last barrier for filtration. These three layers together constitute the filtration membrane layer 1.
The middle filter layer 2 is a filter layer without any electron, the filter membrane on the middle filter layer 2 can be designed into a honeycomb shape, the filter holes on the middle filter layer 2 can be designed into spiral mechanical holes, and the flow speed of the spiral mechanical holes is faster under the action of pressure and flow speed. A gap area 4 is arranged between the middle filter layer 2 and the honeycomb filter membrane I1 and the honeycomb filter membrane II 3, when mixed molecules enter the gap area 4 after being filtered from a neutral layer of the middle filter layer 2, the mixed molecules are prevented from passing through macromolecules 5 from the middle filter layer 2, small molecules 6 enter the gap area 4 through spiral mechanical holes, and then are filtered through the honeycomb filter membrane I1 with charges and the honeycomb filter membrane II 3 respectively to obtain substances with positive charges and substances with negative charges respectively.
The honeycomb-shaped filtering membrane II 3 is a membrane coated with negative charges, the membrane can be made of fibers or nano and graphene materials, the structure of the honeycomb-shaped filtering membrane layer IV 3-1 is designed into a spiral filtering membrane, filtering membrane holes of a spiral structure are formed in the honeycomb-shaped filtering membrane layer IV 3-1, and the negative charges of the honeycomb-shaped filtering membrane layer IV 3-1 play a role of a charge barrier; the size of the filtration membrane pores corresponds to a mechanical barrier that prevents passage of large molecules larger than the diameter of the filtration membrane pores. The structure of the honeycomb-shaped filtering membrane layer V3-2 is designed to be a microfiber net structure, and negative charges carried by the honeycomb-shaped filtering membrane layer V3-2 play a role of a charge barrier; the size of the pores of the fiber network is equivalent to a mechanical barrier, which can prevent the passage of macromolecules larger than the diameter of the pores of the fiber network. The structure of the honeycomb-shaped filtering membrane layer 3-3 is designed to have foot processes, and cracks are formed between the foot processes which are staggered with each other. The slit has a slit diaphragm for filtering, and the slit diaphragm has a hole with a diameter which can prevent the macromolecule filtered by the inner layer and the middle layer from passing through and is the last barrier for filtering. These three layers together constitute the filtration membrane layer 3.
When the device is installed, a filtering membrane for filtering and purifying molecules is arranged on a device pipeline for purifying and filtering the molecules, under the conditions of setting pressure, flow rate, resistance, chemistry, physics and other factors, mixed molecules enter the filtering membrane 5 for filtering and purifying the molecules, the mixed molecules enter from one end of an inlet of a neutral layer filtering layer 2, when passing through the neutral layer filtering layer 2, macromolecules are prevented from passing through the neutral layer filtering layer 2, micromolecule substances and residual macromolecules enter a gap area 4 through spiral mechanical holes, charged micromolecules are filtered out from a honeycomb filtering membrane I1 and a honeycomb filtering membrane II 3 respectively, the neutral molecules are filtered out from the other end of the neutral filtering layer 2, and the purpose of purification and filtration is achieved.
Since the individual layers of the honeycomb filter membrane II 3 contain a plurality of negatively charged substances, the permeability of the honeycomb filter membrane II 3 is also determined by the charge of the substances to be filtered. These negatively charged species repel negatively charged molecules, limiting their filtration. Even though the effective radius of the molecule is smaller than the filter pores, it is difficult to pass through the filter membrane because it is negatively charged. While with the same effective radius, positively charged species are more permeable than negatively charged species. Since the honeycomb filter membranes II 3 are predominantly negatively charged, they repel negatively charged substances. In the three-layer structure of the honeycomb-shaped filter membrane II 3, each layer is designed to be covered with a charged substance, and the negatively charged groups can prevent the substances with the same charges from passing through and play the role of an electrochemical barrier.
Since each layer of the honeycomb filter membrane I1 contains a plurality of positively charged substances, the permeability of the honeycomb filter membrane I1 is also determined by the charge of the substance to be filtered. These positively charged species repel positively charged molecules, limiting their filtration. Even though the effective radius of the molecule is smaller than the filter pores, it is difficult to pass through the filter membrane because it is positively charged. While with the same effective radius, negatively charged species are more permeable than positively charged species. Since the honeycomb filter membranes I1 are predominantly positively charged, they repel positively charged substances. In the three-layer structure of the honeycomb-shaped filter membrane I1, each layer is designed to be covered with a charged substance, and the positively charged groups can prevent the substances with the same charge from passing through and play the role of an electrochemical barrier.
Claims (5)
1. A filtration membrane for filtering purified molecules, comprising: the filter membrane comprises a honeycomb-shaped filter membrane I, an intermediate filter layer and a honeycomb-shaped filter membrane II, wherein the honeycomb-shaped filter membrane I is a filter membrane coated with positive charges, the intermediate filter layer is a filter membrane without any electrons, the honeycomb-shaped filter membrane II is a filter membrane coated with negative charges, the intermediate filter layer, the honeycomb-shaped filter membrane I and the honeycomb-shaped filter membrane II are manufactured into a filter membrane with an integral structure, the filter membrane is of a hollow structure, a gap area is formed in a hollow area of the filter membrane, and the honeycomb-shaped filter membrane I, the intermediate filter layer and the honeycomb-shaped filter membrane II are respectively connected with each other to form the hollow filter membrane for filtering and purifying molecules.
2. A filtration membrane for filtering purified molecules according to claim 1, wherein: the middle filter layer is provided with filter holes.
3. A filtration membrane for filtering purified molecules according to claim 1, wherein: honeycomb filtration membrane I is the membrane of making with fibre or nanometer and graphite alkene material, honeycomb filtration membrane I includes honeycomb filtration rete I, honeycomb filtration rete II and honeycomb filtration rete III, honeycomb filtration rete II is located between honeycomb filtration rete I and the honeycomb filtration rete III, honeycomb filtration rete I is for being equipped with the filter membrane of heliciform filtration pore, honeycomb filtration rete II is the filter membrane that is fibre network structure, honeycomb filtration rete III is for being equipped with the filter membrane of foot process.
4. A filtration membrane for filtering purified molecules according to claim 1, wherein: the honeycomb-shaped filtering membrane II is a membrane made of fibers or nano and graphene materials, and comprises a honeycomb-shaped filtering membrane layer IV, a honeycomb-shaped filtering membrane layer V and a honeycomb-shaped filtering membrane layer VI, the honeycomb-shaped filtering membrane layer V is located between the honeycomb-shaped filtering membrane layer IV and the honeycomb-shaped filtering membrane layer VI, the honeycomb-shaped filtering membrane layer IV is a filtering membrane with spiral filtering holes, the honeycomb-shaped filtering membrane layer V is a filtering membrane with a fiber net-shaped structure, and the honeycomb-shaped filtering membrane layer is a filtering membrane with foot protrusions.
5. A filtration membrane for filtering purified molecules according to claim 1, wherein: the filtering membrane for filtering and purifying molecules is of a square structure, the upper end face and the lower end face of the filtering membrane are respectively a honeycomb-shaped filtering membrane I and a honeycomb-shaped filtering membrane II, the left end face and the right end face of the filtering membrane are respectively middle filtering layers, the front end face and the rear end face of the filtering membrane can be respectively the connecting part of the honeycomb-shaped filtering membrane I and the honeycomb-shaped filtering membrane II, or the front end face and the rear end face of the filtering membrane can be respectively of a structure which can not be communicated with any molecules.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022612879.9U CN214345647U (en) | 2020-11-12 | 2020-11-12 | Filtering membrane for filtering and purifying molecules |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022612879.9U CN214345647U (en) | 2020-11-12 | 2020-11-12 | Filtering membrane for filtering and purifying molecules |
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| CN214345647U true CN214345647U (en) | 2021-10-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112403283A (en) * | 2020-11-12 | 2021-02-26 | 柳州铁道职业技术学院 | Filtering membrane for filtering and purifying molecules |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112403283A (en) * | 2020-11-12 | 2021-02-26 | 柳州铁道职业技术学院 | Filtering membrane for filtering and purifying molecules |
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