CN113800610A - Assembled magnetic filter element and magnetic filter device - Google Patents
Assembled magnetic filter element and magnetic filter device Download PDFInfo
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- CN113800610A CN113800610A CN202111206478.6A CN202111206478A CN113800610A CN 113800610 A CN113800610 A CN 113800610A CN 202111206478 A CN202111206478 A CN 202111206478A CN 113800610 A CN113800610 A CN 113800610A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/484—Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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Abstract
The invention provides an assembled magnetic filter element and a magnetic filter device. The filter element comprises a bracket and a plurality of filter sheets made of magnetic materials, wherein each filter sheet is arranged on the bracket to form a laminated structure; each filter sheet is provided with a plurality of holes, and each hole penetrates from one side surface of the filter sheet to the other side surface in the thickness direction; when the magnetic filter is used, the filter element is placed in a magnetic field, liquid to be filtered passes through the filter element, the liquid flows in from the holes of the filter sheets positioned on one side of the filter element, and flows out from the holes of the filter sheets positioned on the other side of the filter element after sequentially passing through the holes of the filter sheets. The filter element can filter magnetic particles in liquid, is simple in structure, easy to manufacture, long in service life and good in application prospect, and the filter sheet can be replaced.
Description
Technical Field
The invention belongs to the technical field of magnetic filtration, and particularly relates to an assembled magnetic filter element and a magnetic filtration device.
Background
The magnetic filter device comprises an external magnetic field unit and a magnetic filter element, when the magnetic filter device is used, the magnetic filter element is arranged in a magnetic field, liquid passes through the magnetic filter element, and magnetic particles in the liquid can be adsorbed on the magnetic filter element under the action of the magnetic field to realize the filtration and adsorption of the magnetic particles in the liquid. At present, there are many types of magnetic separation and filtration apparatuses available in the market, in which the core filter device is generally a magnet rod or an electromagnetic rod, and such a magnetic filtration apparatus can only filter magnetic particles of larger size such as iron filings and rust, but cannot filter magnetic particles of smaller size or even nano-sized magnetic particles.
Patent application No. CN202110360270.3 discloses a filter element for removing heavy metals in water, which is made of soft magnetic material and has a hollow structure with two open ends. When in use, the filter core is placed in a magnetic field, and the filter core can adsorb the magnetic nanoparticles under the action of the magnetic field; and (3) sealing the outlet end of the filter core, adding magnetic nanoparticles into the water to enable the magnetic nanoparticles to adsorb heavy metal ions in the water and then injecting the heavy metal ions into the hollow structure from the inlet end of the filter core, wherein the magnetic nanoparticles are adsorbed by the filter core, so that the heavy metal ions are adsorbed, and the water flows out of the holes. However, the filter element has limited surface area and low efficiency of capturing magnetic nanoparticles; moreover, the filter element is of an integral structure, and cracks, internal stress and the like generated when the local part is damaged are easy to diffuse to influence other undamaged parts; in addition, even if cracks, internal stress, etc. are not propagated, when the damaged portion needs to be replaced, the filter element still has to be taken out of the filter device for the entire replacement due to the integral structure, which is costly and complicated in operation.
Disclosure of Invention
Aiming at the technical current situation, the invention provides the magnetic filter element which has the advantages of good filtering effect, replaceable local materials and convenient and flexible use.
The technical scheme provided by the invention is as follows: an assembled magnetic filter element is composed of a plurality of filter sheets made of magnetic materials, and each filter sheet is arranged on a carrier bracket to form a laminated structure; each filter sheet is provided with a plurality of holes, and each hole penetrates from one side surface of the filter sheet to the other side surface in the thickness direction;
when in use, the magnetic filter core is placed in a magnetic field; the liquid to be filtered flows in from the holes of the filter sheets on one side of the filter element through the filter element, and flows out from the holes of the filter sheets on the other side of the filter element after sequentially passing through the holes of the filter sheets.
The number of the filter sheets is not limited, and the number of the filter sheets is preferably 2-500.
Preferably, the filter disc groups are arranged in parallel.
As an implementation, there is a spacing between the filter sheets in the stacking direction. In view of the supporting strength, as another implementation, the filter sheets are divided into a plurality of groups, each group is composed of more than two filter sheets, each filter sheet in each group has no spacing in the stacking direction, i.e., is closely stacked, and each group has a plurality of channels penetrating from the holes of the uppermost filter sheet in the group to the holes of the lowermost filter sheet, and there is a spacing between the groups in the stacking direction. Preferably, the number of groups is 2 to 30, more preferably 5 to 20.
The thickness of each filter sheet is not limited, and can be the same or different. In order to reduce the replacement cost and facilitate the disassembly and replacement, the thicknesses of the filter sheets are preferably the same.
The shape of each filter sheet is not limited, and the shape of each filter sheet can be the same or different. In order to reduce the replacement cost and facilitate the disassembly and replacement, the filter sheets in the same group are preferably the same in shape, and more preferably the filter sheets are the same in shape.
The shape of the holes is not limited, and the holes can be regular or irregular.
The pore size is not limited. Preferably, the smallest pore size in each filter sheet decreases gradually in the direction of liquid flow. Preferably, the holes in each filter sheet have the same structure and the same pore diameter.
Preferably, the pores have a diameter of between 10 μm and 500mm, preferably between 100 μm and 100mm, more preferably between 300 μm and 10 mm.
The filter sheet is made of magnetic materials, can be made of magnetic materials such as soft magnetic materials and permanent magnetic materials, preferably soft magnetic materials, and more preferably soft magnetic ferrite materials.
The mounting method of each filter and the bracket is not limited, and the filter can be a buckle, an adhesive, a plug, an adsorption and the like, and is preferably a mounting mode with convenient replacement.
The preparation method of the filter sheet is not limited, and comprises extrusion molding, injection molding, compression molding, 3D printing molding and the like, and preferably 3D printing molding.
In order to increase the filtration efficiency, the liquid flow direction is preferably at an angle to the filter sheet, preferably perpendicular.
The filter element is not limited in size or shape and is preferably compatible with the carrier support structure.
The material of the bracket is not limited, and the bracket can be polymer materials such as PVC, PE, TPE and the like, can also be a metal magnetic material, and is preferably made of a material with prominent bearing capacity, impact resistance and damping performance.
The filter sheet is not limited in mounting mode in the bracket, and can be fixedly mounted or detachably mounted.
When the liquid containing magnetic particles is filtered, a plurality of magnetic filter sheets with holes are arranged in a stacked mode, a filter element with certain supporting strength is formed under the action of a carrier support, the liquid flows into the filter elements from the holes of the filter sheets positioned on one side of the filter elements, sequentially passes through the holes of the filter element groups, and flows out from the holes of the filter sheets positioned on the other side of the filter elements. Under the action of the magnetic field, the magnetic particles are adsorbed on the filter disc, so that the aim of filtering and removing the magnetic particles in the liquid is fulfilled. Compared with the prior art, the invention has the following beneficial effects:
(1) the filter core is of a multilayer structure, so that on one hand, the contact area of liquid and the filter disc is greatly increased, the filtering efficiency is improved, on the other hand, the liquid is filtered layer by layer, the filtering effect is greatly improved, and the removal rate of magnetic particles after multilayer filtering is improved.
(2) As preferred, along the liquid flow direction, the minimum aperture in the filter disc reduces gradually, helps magnetic particle to be adsorbed in the hole gradually, has effectively avoided magnetic particle to pile up the problem that the hole structure that flows through earlier caused the jam and can't get into follow-up filter disc, has further improved high-efficient filtration, has guaranteed filtration quality.
(3) Preferably, the filter element group is formed by the plurality of filter elements, so that the structural firmness and impact strength of the filter element can be improved, and the service life of the filter element is prolonged.
(4) The filter element is formed by assembling a plurality of filter element groups and is carried on the carrier bracket, on one hand, compared with the integral filter element in the prior art, the filter element has simple structure and easy manufacture, thereby reducing the preparation difficulty and the cost; on the other hand, because the filter sheets are independently assembled on the bracket, cracks, internal stress and the like generated when the local damage occurs cannot be diffused to other filter sheets, so that the damaged area of the filter element is greatly reduced, and only the damaged filter sheet group needs to be replaced, thereby reducing the maintenance, replacement and production cost; in addition, when the filter disc group is replaced, only the old filter disc group needs to be taken out and the new filter disc group needs to be assembled, so that the replacement operation is simple and convenient.
(5) The filter core of the invention can filter micron-sized magnetic particles, nano-sized magnetic particles, magnetic particles below 10 mu m and even magnetic particles below 1 mu m. When the actual filtration and separation treatment is performed, a plurality of filter elements of the present invention may be connected in series or in parallel as appropriate according to the actual flow rate and flow velocity.
(6) After the filtration is finished, the external magnetic field is only needed to be removed, and the filter element can be cleaned by using clear water which flows in the direction opposite to the liquid flow when the filter element is used, so that the high-efficiency cleaning and the cyclic utilization are realized.
The invention also provides a magnetic filter device comprising the filter element, which comprises a buffer pool, a magnet, a magnetic field generating unit and the filter element;
the bottom of the buffer tank is communicated with one end of a pipeline, and the other end of the pipeline is communicated with the filter element;
the magnet is arranged at the bottom of the buffer pool and used for roughly adsorbing the magnetic particles in the buffer pool;
the magnetic field generating unit is used for providing a magnetic field, and the filter element is positioned in the magnetic field;
when the device is used, liquid to be filtered is cached in the buffer tank and flows into the filter element through the pipeline, and magnetic particles in the stored liquid are roughly adsorbed by the magnet at the bottom of the buffer tank and are adsorbed on the plate; after the liquid flows into the filter element, the liquid flows in from the holes of the filter disc positioned on one side of the filter element, sequentially passes through the holes of each filter disc group, and flows out from the holes of the filter disc positioned on the other side of the filter element, and under the action of a magnetic field, the magnetic particles are adsorbed by the filter disc.
The ratio of the cross-sectional area to the depth of the buffer pool is 1 to 300, more preferably 20 to 100, and still more preferably 20 to 50. The cross section area is large, the depth is shallow, on one hand, the flow speed of liquid entering the filter element can be reduced, the contact time of magnetic particles and the filter element is prolonged, and the pressure of the filter element is reduced; on the other hand, because the depth of the buffer pool is shallow, the magnetic particles at the bottom of the buffer pool can be roughly adsorbed by the magnet at the bottom of the buffer pool.
Preferably, the bottom of the buffer tank is made of a plate, the plate is detachable, and when the magnetic particles are adsorbed on the plate, the plate is removed to collect the magnetic particles. As an implementation manner, in the plate, a hole is provided at a position of the communicating pipe for communicating the pipe. The plate is not limited, and can be a polymer material or a ceramic material such as PVC, PE, PP, PTFE and the like, and preferably a corrosion-resistant and impact-resistant PTFE material. Preferably, the surface of the adsorption plate is provided with a groove for storing the coarsely adsorbed magnetic particles.
The thickness of the adsorption plate is preferably 1mm to 30cm, more preferably 1mm to 10cm, and still more preferably 1mm to 5 cm.
The magnet is a common magnet, preferably a high-grade neodymium iron boron magnet.
The connection mode between magnet and the adsorption plate is unlimited, preferably detachable.
Preferably, the open pipeline is communicated with one side of the filter element through a first conversion head, and the conversion head is used for adapting the caliber of the open pipeline and the size of one side of the filter element.
Preferably, the other side of the filter element is communicated with the pipeline through the conversion head, liquid flows out of the pipeline through the conversion head after flowing out of the holes of the filter sheet on the other side of the filter element, and the second conversion head is used for adapting to the size of the other side of the filter element and the caliber of the pipeline.
The material of the conversion head is not limited, and can be polymer materials such as PVC, PE, TPE and the like, and can also be metal materials, preferably materials with outstanding bearing capacity, impact resistance and damping performance.
When the actual filtration and separation treatment is carried out, a plurality of the filtration devices or the assembled magnetic filter elements can be properly connected in series or in parallel according to the actual water flow and flow velocity.
As one application form, the magnetic filtering device can be used for filtering and removing heavy metal ions in water, when the magnetic filtering device is used, magnetic nanoparticles are added into water, the magnetic nanoparticles adsorb the heavy metal ions in the water, then water flows into the buffer tank for buffering, the magnetic particles are roughly adsorbed by the magnet at the bottom of the buffer tank and adsorbed on a plate, the water flows into the filter element through the pipeline, and the magnetic nanoparticles are adsorbed by the filter disc under the action of a magnetic field, so that the heavy metal is adsorbed and filtered.
As an implementation manner, the form of the magnetic field generating unit is not limited, and the magnetic field generating unit may be an electromagnetic type, and may be a permanent magnet. Preferably a permanent magnet, more preferably a high-grade permanent magnet, such as a high-grade neodymium iron boron permanent magnet.
Drawings
Fig. 1 is a schematic structural view of a magnetic filter element provided in embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a magnetic filter device provided in embodiment 1 of the present invention.
The reference numerals in fig. 1-2 are: 1, a filter element; 12 a filter disc; 13 holes; 2 a magnetic field generating unit; 3, a bracket; 41 a first transducing head; 42 a second conversion head; 5, a magnet; 6, adsorbing the board; 61 adsorbing the plate groove; 7, a buffer pool; 81 a first conduit; 82 a second conduit.
Detailed Description
The directional or positional indicators, such as "outer", "upper", "lower", etc., and the adjectives, such as "short", "thin", etc., are relative to the directional or positional or adjective description of the filter device, and the relative directional or positional or synonymous terms are also considered as the scope of the present invention.
Furthermore, the present invention is described in further detail below with reference to embodiments and drawings, and it should be noted that the embodiments are intended to facilitate understanding of the present invention and do not limit the present patent in any way.
As shown in fig. 1, the assembled magnetic filter element 1 is composed of a support 3 and a plurality of filter sheets 12 made of soft magnetic ferrite materials. Each filter sheet 12 is arranged on the bracket 3 to form a laminated structure; each filter sheet 12 is provided with a plurality of holes 13, and each hole 13 penetrates from one side surface to the other side surface of the filter sheet in the thickness direction.
In this embodiment, the support material is made of a corrosion-resistant polymer material. The shape of each filter plate is the same, is circular, and the diameter is the same, and the thickness is the same, is 2 mm. The holes of each filter are all round holes, and the apertures are the same and are 500 mu m. Each filter plate is installed on the bracket in a plugging mode.
In this embodiment, the filter sheets are arranged in parallel, and a space is provided between the filter sheets in the stacking direction, and the assembled holder and each filter sheet form a cylindrical structure.
In this embodiment, the number of the filter sheets is 50.
In this implementation, choose for use 3D to print each cassette of shaping preparation, specifically as follows:
(1) uniformly dispersing ferrite powder with the average particle size of about 2 mu m into a premix containing a binder PVA, a plasticizer PEG and a small amount of a dispersing agent ECO-2100 to prepare stable slurry;
(2) and 3D printing is carried out on the mixed slurry to obtain a filter sheet blank.
(3) And drying the filter sheet blank, and then sintering the filter sheet blank at a high temperature in a 1300 ℃ furnace to obtain the high-density ferrite filter sheet.
In this embodiment, the filter element is used in a magnetic filter device. As shown in fig. 2, the magnetic filter device includes a buffer tank 7, a magnet 5, and the filter element 1. The buffer tank 7 is communicated with one end of a first pipeline 81, and the other end of the first pipeline 81 is communicated with the filter element 1. The bottom of the buffer tank 7 is formed by a plate 6, and the plate 6 is detachable. In the plate 6, a hole is provided at a position communicating with the first pipe 81 for communicating with the first pipe 81. The bottom of the plate 6 is provided with a magnet 5. The periphery of the filter element 1 is provided with a magnetic field generating unit 2 for providing a magnetic field in which the filter element 1 is positioned.
In this embodiment, the surface of the plate 6 is provided with a groove 61 for storing the coarsely adsorbed magnetic particles.
In this embodiment, the magnetic field generating unit 2 is a high grade neodymium iron boron magnet.
In this embodiment, the first pipe 81 is communicated with one side of the filter element 1 through the first conversion head 41, and the first conversion head 41 is used for adapting the caliber of the first pipe 81 and the size of one side of the filter element 1. The other side of the filter element 1 is communicated with the second pipeline 82 through the second conversion head 42, and the second conversion head 82 is used for adapting the size of the other side of the filter element 1 and the caliber of the second pipeline.
In this embodiment, the ratio of the surface area to the depth of the buffer pool is 50; the plate 6 is made of corrosion-resistant PTFE material and has the thickness of 5 cm.
In this embodiment, the filter sheets 12 are divided into 5 groups, each group is composed of 10 filter sheets, each filter sheet in each group has no spacing in the stacking direction, i.e., is closely stacked, and each group has a plurality of channels penetrating from the holes of the uppermost filter sheet in the group to the holes of the lowermost filter sheet, and each group has a spacing in the stacking direction.
When the filter is used, liquid to be filtered is buffered in the buffer tank 7 and flows into the filter element 1 through the first pipeline 81, and magnetic particles in the stored liquid are adsorbed and stored in the groove 61 of the plate 6 by the rough adsorption of the magnet at the bottom of the buffer tank; after flowing into the filter element 1, the liquid flows in from the holes of the filter disc on one side of the filter element, sequentially passes through the holes of each filter disc group, flows out from the holes of the filter disc on the other side of the filter element, and under the action of the magnetic field, the magnetic nanoparticles are adsorbed by the filter disc and then flow out from the second pipeline 82 through the second conversion head 42.
Example 2:
in this example, the magnetic filter device was substantially the same as that of example 1, except that the number of filter element groups in the filter element was 4, and the number of filter elements in each group was 5, for a total of 20.
Example 3:
in this embodiment, the magnetic filter device is substantially the same as that of embodiment 1, except that the pore size of each filter element group is gradually reduced from the filter element group through which the liquid first flows to the filter element group through which the liquid finally flows, the pore size of the filter element group through which the liquid first flows is 1mm, and the pore size of the filter element group through which the liquid finally flows is 300 μm.
Example 4:
in this example, the magnetic filter device was substantially the same as that of example 3, except that the number of filter element groups was 6, and the number of filter elements in each group was 5, for a total of 30.
The magnetic filtration apparatus of examples 1 to 4 above was used to filter wastewater containing magnetic particles. The sewage comes from a heavy metal ion sewage sample provided by a certain sewage treatment plant, and the amount of the sewage used in each experiment is 100 mL.
In the experiment of the embodiment, the specific operation steps are the same, and the difference is only in the filter element. The operation steps are as follows: in the case of the filtration apparatus, it is preferred that,
the processing method comprises the following steps: the modified magnetic nanoparticles were mixed with sewage and stirred, and then poured into the buffer tank of the filtration apparatus in examples 1 to 4, and then flowed through the filter element, and the treated sewage was subjected to ICP test.
ICP detection results can reflect the concentration of certain elements or ions in the solution, and if the ICP numerical value is high, the capture effect of the filter element is poor; if the ICP numerical value is reduced, the filter element is proved to have a filtering effect on heavy metal ions, and the larger the numerical value is reduced, the better the filtering effect of the filter element is proved to be.
ICP measurements (mg/L) were as follows:
| sample (I) | Cr | Ni | Fe | Cu | Zn | Hexavalent chromium |
| Waste water | 0.6 | 1.0 | 3.2 | 2 | 0.2 | 0.9 |
| Example 1 | 0.1 | 0.2 | 0.4 | 0.7 | <0.05 | 0.5 |
| Example 2 | 0.1 | 0.1 | 0.3 | 0.6 | <0.05 | 0.1 |
| Example 3 | <0.05 | <0.05 | 0.2 | 0.4 | <0.05 | <0.05 |
| Example 4 | <0.05 | <0.05 | <0.05 | 0.3 | <0.05 | <0.05 |
According to ICP detection results, the filtering device and the magnetic filter element have good heavy metal ion removal effect. Wherein, the removal rate of heavy metal ions can be influenced by changing the number of the filter element structures and the size of the pore diameter on each filter element. On one hand, the number of the filter elements is increased, namely the contact area of the filter elements and the magnetic particles is increased, and the capture rate of the filter elements to the magnetic particles can be improved. On the other hand, the pore diameter of the multi-piece structure is changed, the pore diameter size is reduced along with the flowing direction of the solution, and compared with the multi-piece structure with unchanged pore diameter, the multi-piece structure with the pore diameter being larger first and smaller second, the capture effect is better when the magnetic particles are captured.
After the experiment is finished, the two ends of the filter are taken down, the external magnetic field is removed, and the filter is washed by clear water in the direction opposite to the water flow direction during filtering, so that the magnetic particles captured by the filter element can be washed.
The technical solutions of the present invention are described in detail in the above embodiments, which are only preferred embodiments of the present invention and are not intended to limit the present invention, and the present invention may have various modifications and variations. Any modification, addition or substitution in the similar way, which is made within the scope of the principle of the present invention, should be included in the protection scope of the present invention.
Claims (12)
1. An assembled magnetic filter element is composed of a plurality of filter sheets made of magnetic materials, and each filter sheet is arranged on a carrier bracket to form a laminated structure; each filter sheet is provided with a plurality of holes, and each hole penetrates from one side surface of the filter sheet to the other side surface in the thickness direction;
when in use, the magnetic filter core is placed in a magnetic field; the liquid to be filtered flows in from the holes of the filter sheets on one side of the filter element through the filter element, and flows out from the holes of the filter sheets on the other side of the filter element after sequentially passing through the holes of the filter sheets.
2. The modular magnetic filter element of claim 1, wherein: the number of the filter sheets is 2-500;
preferably, the filter disc groups are arranged in parallel;
preferably, as an implementation, there is a spacing between the filter sheets in the stacking direction.
3. The modular magnetic filter element of claim 1, wherein: the filter sheets are divided into a plurality of groups, each group is composed of more than two filter sheets, each filter sheet in each group has no spacing in the stacking direction, each group is provided with a plurality of channels, the channels penetrate from the holes of the uppermost filter sheet in the group to the holes of the lowermost filter sheet, and the groups are spaced in the stacking direction;
preferably, the number of groups is from 2 to 30, preferably from 5 to 20.
4. The modular magnetic filter element of claim 1, wherein: the thickness of each filter sheet is the same;
preferably, the shape of each filter sheet is the same;
preferably, the filter sheets in the same group are of the same shape.
5. The modular magnetic filter element of claim 1, wherein: the minimum pore size in each filter sheet is gradually reduced along the liquid flow direction;
preferably, the holes in each filter sheet have the same structure and the same aperture;
preferably, the pores have a diameter of between 10 μm and 500mm, preferably between 100 μm and 100mm, more preferably between 300 μm and 10 mm.
6. The modular magnetic filter element of claim 1, wherein: the mounting method of each filter sheet and the bracket is one or more of buckling, bonding, plugging and pulling and adsorption.
7. The modular magnetic filter element of claim 1, wherein: the preparation method of the filter sheet comprises one or more of extrusion molding, injection molding, compression molding and 3D printing molding.
8. The modular magnetic filter element of claim 1, wherein: the flow direction of the liquid forms a certain included angle with the filter sheet, and is preferably vertical;
preferably, the material of the bracket is a high polymer material or a metal material;
preferably, the filter disc is fixedly or detachably mounted in the bracket.
9. A magnetic filter device is characterized in that: comprises a buffer pool, a magnet, a magnetic field generating unit and the assembled magnetic filter element of any one of claims 1 to 8;
the bottom of the buffer tank is communicated with one end of a pipeline, and the other end of the pipeline is communicated with the filter element;
the magnet is arranged at the bottom of the buffer pool and used for roughly adsorbing the magnetic particles in the buffer pool;
the magnetic field generating unit is used for providing a magnetic field, and the filter element is positioned in the magnetic field.
10. A magnetic filter device according to claim 9, wherein: the bottom of the buffer pool is made of a plate, and the plate can be detached;
preferably, holes are formed in the plate at the positions of the communication pipelines and are used for communicating the pipelines;
preferably, the surface of the adsorption plate is provided with a groove for storing the coarsely adsorbed magnetic particles.
11. A magnetic filter device according to claim 9, wherein: the thickness of the adsorption plate is 1mm-30cm, preferably 1mm-10cm, and more preferably 1mm-5 cm.
12. A magnetic filter device according to claim 9, wherein: the magnet is detachably connected with the adsorption plate;
preferably, the open pipeline is communicated with one side of the filter element through a first conversion head, and the conversion head is used for adapting the caliber of the open pipeline and the size of one side of the filter element;
preferably, the other side of the filter element is communicated with the pipeline through the conversion head, liquid flows out of the pipeline through the conversion head after flowing out of the holes of the filter sheet on the other side of the filter element, and the second conversion head is used for adapting to the size of the other side of the filter element and the caliber of the pipeline.
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| CN207899214U (en) * | 2018-01-26 | 2018-09-25 | 惠州清水湾生物材料有限公司 | A kind of efficient heavy absorption removing material |
| CN109847934A (en) * | 2018-12-12 | 2019-06-07 | 浙江盾安智控科技股份有限公司 | Magnetic filter and its Magnetic filtration device core assemble method |
| CN213319138U (en) * | 2020-07-22 | 2021-06-01 | 青岛伟硕金属科技有限公司 | Coolant liquid recovery unit for digit control machine tool |
| CN112978880A (en) * | 2021-04-02 | 2021-06-18 | 宁波磁性材料应用技术创新中心有限公司 | Filter element for removing heavy metals in water and use method thereof |
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