CN209800144U - Filter element of filter and filter - Google Patents
Filter element of filter and filter Download PDFInfo
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- CN209800144U CN209800144U CN201920565974.2U CN201920565974U CN209800144U CN 209800144 U CN209800144 U CN 209800144U CN 201920565974 U CN201920565974 U CN 201920565974U CN 209800144 U CN209800144 U CN 209800144U
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Abstract
The utility model discloses a filter element of a filter and the filter; the oil-saving device comprises a cylindrical outer cover, an upper end cover and a lower end cover, wherein the upper end cover and the lower end cover are respectively arranged at two axial ends of the outer cover; a central pipe communicated with the oil outlet is arranged in the outer cover, the peripheral wall of the central pipe is provided with a filter hole, and an annular space surrounded by the inner peripheral wall of the outer cover and the peripheral wall of the central pipe is filled with fiber particles made of paper pulp. An upper partition plate and a lower partition plate are arranged in the central tube, and combustion-supporting particles or/and fuel modifying particles are filled in the central tube between the upper partition plate and the lower partition plate. The filter comprises the filter element. The utility model discloses the filter element had both had filtering capability, can improve fuel quality and combustion value again, and longe-lived.
Description
Technical Field
The utility model belongs to the technical field of the filter is made, especially, relate to a filter element and filter.
Background
The filter is divided into the following according to different filtering functions: oil filter, fuel filter (gasoline filter, diesel filter, oil-water separator, hydraulic filter), air filter, air conditioner filter. The fuel filter is used for filtering harmful particles and water in an engine fuel gas system so as to protect an oil pump nozzle, a cylinder sleeve, a piston ring and the like, reduce abrasion and avoid blockage.
The core component of the fuel filter is a filter element, the commonly used filter element is a paper filter element, the paper filter element is composed of a cylindrical filter element body formed by enclosing folded filter paper in an end-to-end mode, an upper end cover and a lower end cover, the upper end cover is provided with a fuel outlet, the fuel outlet is communicated with an inner cavity of the filter element body, the fuel filter process is firstly filtered through the peripheral wall of the filter element body, and filtered fuel enters the inner cavity of the filter element body and flows out from the fuel outlet. But present fuel filter core holds the dirt rate low, and life is short, and only has filtering capability, can't improve the quality and the combustion value of fuel, along with market's demand and development, only has filtering capability's fuel filter can't satisfy the demand in market yet.
In view of this, it is needed to improve the prior art and develop a filter element with a filtering function, which can improve the quality and combustion value of fuel oil during the filtering process and has a long service life to meet the market demand.
SUMMERY OF THE UTILITY MODEL
Aim at overcoming exist not enough among the above-mentioned prior art, the utility model provides a technical problem is, has both had filtering capability, can improve the fuel quality and the rate of economizing on fuel with the combustion value improvement again in filtering process, and long service life provided a filter element and filter.
In order to solve the technical problem, in a first aspect, an embodiment of the present invention provides a filter element of a filter, including a cylindrical housing, and an upper end cover and a lower end cover respectively disposed at two axial ends of the housing, wherein an oil outlet is disposed on the upper end cover; a central pipe communicated with the oil outlet is arranged in the outer cover, and the peripheral wall of the central pipe is provided with a filtering hole;
And an annular space defined by the inner peripheral wall of the outer cover and the outer peripheral wall of the central pipe is filled with fiber particles made of paper pulp.
preferably, an upper partition plate and a lower partition plate with filter holes are arranged in the central tube, particles are filled in the central tube between the upper partition plate and the lower partition plate, and the particles comprise combustion-supporting particles or/and fuel modifying particles in a porous sintering structure.
Preferably, an annular upper sealing cover and an annular lower sealing cover are arranged between the inner peripheral wall of the outer cover and the outer peripheral wall of the central tube, the outer end face of the upper sealing cover is attached to the inner end face of the upper end cover, and the outer end face of the lower sealing cover is attached to the inner end face of the lower end cover; the annular space between the upper sealing cover and the lower sealing cover is filled with the fiber particles.
Preferably, be provided with the dustcoat filter screen on the internal perisporium of dustcoat, be provided with the center tube filter screen on the periphery wall of center tube, the medial surface of going up the baffle is provided with the baffle filter screen.
Preferably, the outer cover filter screen is made of stainless steel, composite fiber, modified nylon or non-woven fabric material; the central tube filter screen is made of stainless steel, composite fibers, modified nylon or non-woven fabric materials; the upper clapboard filter screen is made of stainless steel, composite fiber, modified nylon or non-woven fabric materials.
Preferably, the filter fineness of dustcoat filter screen is 4 ~ 10um, the filter fineness of center tube filter screen is 1 ~ 4um, the filter fineness of going up the baffle filter screen is 4 ~ 8 um.
Preferably, the particle size of the fiber particles is 1-5 mm, and micropores with the pore diameter of 1-15 um are distributed on the fiber particles.
Preferably, the particle diameters of the combustion-supporting particles and the fuel modifying particles are both 2-4 mm; the quantity of the combustion-supporting particles is 1.5 times that of the fuel oil modifying particles.
In a second aspect, an embodiment of the present invention further provides a filter, including a housing and the above filter element, the filter element is disposed in the housing.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
The filter element of the utility model comprises a cylindrical outer cover and a central tube, wherein the annular space enclosed by the inner peripheral wall of the outer cover and the outer peripheral wall of the central tube is filled with fiber particles made of paper pulp and capable of improving oil quality; and because the fiber particles are of a microporous structure, the filter material has stronger filtering and adsorbing capacity and long service life. Moreover, the central tube between the upper clapboard and the lower clapboard is filled with combustion-supporting particles or/and fuel modifying particles which have a porous sintering structure and can improve the oil quality and the combustion value. When the fuel passes through the fiber particles, impurity particles in the fuel are adsorbed on the fiber particles, so that the fuel is cleaned. Marine organism fermentation liquor components in the fiber particles are slowly released in the whole using process, and the marine organism fermentation liquor components can decompose colloidal substances which cannot be used for combustion in fuel oil and convert the colloidal substances into combustible substances; the filtered and improved fuel oil enters the central tube, and the sintered fuel oil additive components in the combustion-supporting particles are slowly released and fused with the fuel oil, so that the fuel oil can be fully combusted, and a fuel oil system can be cleaned; the marine organism fermentation liquor components sintered in the fuel oil modified particles are slowly released, and the colloidal substances which can not be used for combustion in the fuel oil are decomposed again and converted into combustible substances.
To sum up, the utility model discloses filter element and filter had both had filtering capability, can improve fuel quality and combustion value again in the filtering process, made the engine save the fuel under equal operating mode, and long service life.
drawings
FIG. 1 is a cross-sectional view of a first embodiment of a filter element according to the present invention;
Fig. 2 is a sectional view of a second embodiment of a filter element according to the present invention;
In the figure, 1-an outer cover, 11-an upper sealing cover, 12-a lower sealing cover, 13-fiber particles, 2-an upper end cover, 21-an oil outlet, 3-a lower end cover, 4-a central pipe, 41-an upper partition, 42-a lower partition, 43-combustion-supporting particles, 44-fuel oil modifying particles, 5-an outer cover filter screen, 6-a central pipe filter screen and 7-an upper partition filter screen.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1, a filter element of a filter comprises a cylindrical outer cover 1 (made of metal material, and a plurality of oil inlet holes are arranged on the outer cover 1), and an upper end cover 2 and a lower end cover 3 which are respectively arranged at two axial ends of the outer cover 1, wherein an oil outlet 21 is arranged on the upper end cover 2; a central pipe 4 communicated with the oil outlet 21 is arranged in the outer cover 1, and the peripheral wall of the central pipe 4 is provided with a filtering hole; an annular space surrounded by the inner peripheral wall of the housing 1 and the outer peripheral wall of the central tube 4 is filled with fiber particles 13 made of pulp. The particle size of the fiber particles 13 is 1-5 mm, and micropores with the aperture of 1-15 um are distributed on the fiber particles 13. Because the annular space enclosed by the outer cover 1 and the central tube 4 is larger, and the specific surface area of the fiber particles 13 is huge, the dust holding rate of the filter element of the filter is far greater than that of the filter element of the common filter, thereby prolonging the service life, namely prolonging the replacement range to 10 kilometers.
in this embodiment, an annular upper seal cover 11 and an annular lower seal cover 12 are disposed between the inner peripheral wall of the outer cover 1 and the outer peripheral wall of the central tube 4, the upper seal cover 11 is located at the top of the outer cover 1, the outer end face of the upper seal cover 11 is attached to the inner end face of the upper end cover 2, and the lower seal cover 12 is located at the bottom of the outer cover 1, and the outer end face of the lower seal cover 12 is attached to the inner end face of the lower end cover 3. That is, the annular space between the upper cover 11 and the lower cover 12 is filled with the above-mentioned fiber particles 13; the sealing of the fibre particles 13 is achieved by means of an upper cover 11 and a lower cover 12.
In order to optimize the filtering effect of the filter element, an outer cover filter screen 5 is arranged on the inner peripheral wall of the outer cover 1, and a central tube filter screen 6 is arranged on the outer peripheral wall of the central tube 4.
Wherein: the outer cover filter screen 5 and the central tube filter screen 6 are both made of stainless steel, composite fiber, modified nylon or non-woven fabric materials; the filter fineness of dustcoat filter screen 5 is 4 ~ 10um, and the filter fineness of center tube filter screen 6 is 1 ~ 4 um.
When in work, fuel flows from outside to inside and sequentially passes through the outer cover 1, the outer cover filter screen 5, the fiber particles 13, the central tube filter screen 6, the central tube 4 and the oil outlet 21; when the fuel oil passes through the outer cover filter screen 5, impurity particles larger than or equal to 4-10 um in the fuel oil are isolated outside the outer cover filter screen 5; when fuel passes through the fiber particles 13, due to the extremely strong filtering adsorption force of the microporous structure of the fiber particles 13, most of impurity particles of 1-4 um in the fuel are adsorbed on the fiber particles 13, and meanwhile, the marine organism fermentation liquid components in the fiber particles 13 are slowly released, so that colloidal substances which cannot be used for combustion in the fuel are decomposed and converted into combustible substances, and the quality and the combustion value of the fuel are improved; the residual impurities in the fuel oil are isolated outside the central pipe filter screen 6; filtered fuel flows out of the fuel outlet 21.
Because the fuel is subjected to triple filtration of blocking filtration by the outer cover filter screen 5, adsorption filtration by the fiber particles 13 and blocking filtration by the central tube filter screen 6, the initial filtration efficiency of the filter element of the filter for filtering impurities larger than or equal to 4um can reach 99.9 percent.
This embodiment has still disclosed a filter, and this filter includes the filter element of casing and embodiment one, and the filter element sets up in the casing, and the structure and the mounted position of other spare parts of filter are the same with prior art, do not do the perplexing here.
Example two:
the second embodiment differs from the first embodiment in the structure of the central tube 4, and only the differences will be explained in detail below.
As shown in fig. 2, an upper partition plate 41 and a lower partition plate 42 with filter holes are arranged in the central tube 4, and combustion-supporting particles 43 and fuel reforming particles 44 in a porous sintered structure are filled in the central tube 4 between the upper partition plate 41 and the lower partition plate 42. The particle diameters of the combustion-supporting particles 43 and the fuel modifying particles 44 are both 2-4 mm; the number of the combustion-supporting particles 43 is 1.5 times the number of the fuel reforming particles 44. The combustion-supporting particles 43 can make the fuel fully combusted, and can clean a fuel system; the fuel reforming particles 44 can decompose colloidal substances in the fuel that are not available for combustion, and convert the colloidal substances into combustible substances.
In this embodiment, the inner side surface of the upper partition plate 42 is provided with an upper partition plate screen 7. Wherein, the upper clapboard filter screen 7 is also made of stainless steel, composite fiber, modified nylon or non-woven fabric material; and the filtering precision of the upper clapboard filtering net 7 is 4-8 um. The function of the upper partition screen 7 is to prevent fine impurities generated by the combustion-supporting particles 43 and the fuel reforming particles 44 under the flow impact of the fuel from entering the combustion system.
When in work, fuel flows from outside to inside and sequentially passes through the outer cover 1, the outer cover filter screen 5, the fiber particles 13, the central tube filter screen 6, the central tube 4, the combustion-supporting particles 43, the fuel modification particles 44, the upper partition filter screen 7 and the oil outlet 21; when the fuel oil passes through the outer cover filter screen 5, impurity particles larger than or equal to 4-10 um in the fuel oil are isolated outside the outer cover filter screen 5; when fuel passes through the fiber particles 13, due to the extremely strong filtering adsorption force of the microporous structure of the fiber particles 13, most of impurity particles of 1-4 um in the fuel are adsorbed on the fiber particles 13, and meanwhile, the marine organism fermentation liquid components in the fiber particles 13 are slowly released, so that colloidal substances which cannot be used for combustion in the fuel are decomposed and converted into combustible substances, and the quality and the combustion value of the fuel are improved; part of impurities in the fuel oil are isolated outside a central tube filter screen 6; when the filtered fuel passes through the combustion-supporting particles 43 and the fuel modifying particles 44, the sintered fuel additive components in the combustion-supporting particles 43 are slowly released and are fused with the fuel, so that the fuel can be fully combusted, and a fuel system can be cleaned; the marine organism fermentation liquor components sintered in the fuel oil modifying particles 44 are slowly released, the colloidal substances which cannot be used for combustion in the fuel oil are decomposed again and converted into combustible substances, and then the high-quality fuel oil flows out of the oil outlet 21 after being filtered by the upper clapboard filter screen 7.
Because the fuel is subjected to triple filtration of blocking filtration by the outer cover filter screen 5, adsorption filtration by the fiber particles 13 and blocking filtration by the central tube filter screen 6, the initial filtration efficiency of the filter element of the filter for filtering impurities larger than or equal to 4um can reach 99.9 percent; in addition, before the fuel flows out of the fuel outlet 21, the fuel is filtered for the fourth time through the upper clapboard filtering net 7, so that the cleanliness of the fuel is further ensured. The fuel filter element not only has a filtering function, but also can improve the quality or the combustion value of fuel, so that the engine can save the fuel under the same working condition, the test verifies that the average fuel saving rate can reach more than 10 percent, the service life is long, and the test verifies that the replacement range can be prolonged to 10 kilometers.
This embodiment has still disclosed a filter, and this filter includes the filter element of casing and embodiment two, and the filter element sets up in the casing, and the structure and the mounted position of other spare parts of filter are the same with prior art, do not do the perplexing here.
Example three:
The embodiment discloses a method for manufacturing a filter element of the second embodiment, which comprises the following steps:
A. Preparing paper pulp according to the prior art, uniformly mixing the paper pulp and the marine organism fermentation liquor according to the mass ratio of 1:1, and preparing a paper pulp mixture into spherical fiber particles 13 by means of a forming die; that is, in the paper making process, the mode of forming paper by paper pulp plane is changed, and the pulp mixture is formed into spherical particles by a mold. The fibrous particles 13 can be formed by a person skilled in the art with the aid of an auxiliary die according to a known paper making process, which will not be described in further detail herein.
B. Uniformly mixing a rare earth raw material, a binder, a pore-forming agent, a rare earth corrosion inhibitor and a fuel additive according to a mass ratio of 7:0.2:0.1:0.2: 1; the mixture obtained by mixing is made into the combustion-supporting particles 43 with a plurality of pores through mud refining, molding, drying and sintering at 1300-1500 ℃.
C. Uniformly mixing a rare earth raw material, a binder, a pore-forming agent, a rare earth corrosion inhibitor and marine organism fermentation liquor according to a mass ratio of 7:0.2:0.1:0.2: 1.1; the mixture obtained by mixing is made into porous fuel oil modified particles 44 through mud refining, molding, drying and sintering at 1300-1500 ℃;
D. A lower partition plate 42 is arranged at the position close to the bottom of a central tube 4, then the prepared combustion-supporting particles 43 and fuel oil modifying particles 44 are uniformly mixed according to the quantity ratio of 6:4 and then are filled into the central tube 4, an upper partition plate 41 is arranged at the position close to the top of the central tube 4, and the combustion-supporting particles 43 and the fuel oil modifying particles 44 are sealed in the central tube 4 by the upper partition plate 41 and the lower partition plate 42.
A central tube filter screen 5 is arranged on the peripheral wall of the central tube 4. The inner peripheral wall of the outer cover 1 is provided with an outer cover filter screen 6.
E. A lower sealing cover 12 (used for realizing the connection between the outer cover 1 and the central pipe 4 and positioning the central pipe 4) is arranged between the inner peripheral wall of the outer cover 1 (actually, the outer cover screen 6) and the outer peripheral wall of the central pipe 4 (actually, the central pipe screen 5), the prepared fiber particles 13 are filled into an annular space enclosed by the inner peripheral wall of the outer cover 1 and the outer peripheral wall of the central pipe 4, an upper sealing cover 11 is arranged between the inner peripheral wall of the outer cover 1 and the outer peripheral wall of the central pipe 4, and the fiber particles 13 are sealed in the annular space by the upper sealing cover 11 and the lower sealing cover 12; an upper end cover 2 and a lower end cover 3 are arranged at two axial ends of the outer cover 1.
The filter element can be assembled according to different assembling sequences, not only limited to the assembling sequence of the filter element; as long as it is ensured that the assembled product structure is the same as the structure shown in fig. 2; the utility model discloses an improvement part does not lie in how to assemble the filter element, consequently does not give unnecessary details to its assembly process.
Wherein: the binder is one or more of ultrahigh molecular weight polyethylene, low density polyethylene, high density polyethylene, linear low density polyethylene, ethylene-vinyl acetate copolymer and polypropylene; the pore-forming agent is one or more of ammonium bicarbonate, sodium bicarbonate and azodicarbonamide.
The fuel oil additive and the marine organism fermentation liquor are existing products, the fuel oil additive is common, and the details are not repeated; only marine organism fermentation broth (also called biofuel energy-saving agent) is described in detail below; the marine microorganism fermentation liquor utilizes auxiliary enzyme to extract chitin derivative chitosan from marine organism for degradation to obtain- "micro molecular chitosan" as raw material, and the micro molecular chitosan, chitosanase, lysozyme, etc. are fermented, cultured and magnetized to obtain the marine microorganism fermentation liquor. The marine microorganism fermentation liquor plays an important role in 'fuel oil biological enzyme', the fuel oil biological enzyme is developed on the basis of biological enzyme, contains a special microbial enzyme group, can target and catalyze the combustion reaction of a flame-retardant component in a fuel through an 'induction fit' effect, and an active group electron cloud of the fuel oil biological enzyme interacts with an electron cloud in a target molecule, so that the strength of a chemical bond of the fuel oil biological enzyme is weakened, the activation energy of the reaction is reduced, the fuel oil biological enzyme can be fully combusted in an extremely short piston stroke time, and the purposes of improving the grade of an oil product, improving the combustion efficiency of the oil product, improving the power of an engine and reducing the emission of pollutants are achieved.
example four:
The difference between this embodiment and the third embodiment is that the weight ratio of each component in the manufacturing process of the combustion-supporting particles 43 and the fuel modifying particles 44 is different. Only the differences will be explained below.
B. Uniformly mixing the rare earth raw material, the binder, the pore-forming agent, the rare earth corrosion inhibitor and the fuel additive according to the mass ratio of 9:0.55:0.45:0.55: 1.45; the mixture obtained by mixing is made into the combustion-supporting particles 43 with a plurality of pores through mud refining, molding, drying and sintering at 1300-1500 ℃.
C. Uniformly mixing a rare earth raw material, a binder, a pore-forming agent, a rare earth corrosion inhibitor and marine organism fermentation liquor according to a mass ratio of 9:0.55:0.35:0.55: 1.55; the mixture obtained by mixing is made into porous fuel oil modified particles 44 through pugging, forming, drying and sintering at 1300-1500 ℃.
Example five:
The difference between this embodiment and the fourth embodiment is that the weight ratio of each component in the manufacturing process of the combustion-supporting particles 43 and the fuel modifying particles 44 is different. This embodiment is the preferred embodiment of the present invention; only the differences will be explained below.
B. uniformly mixing a rare earth raw material, a binder, a pore-forming agent, a rare earth corrosion inhibitor and a fuel additive according to a mass ratio of 8:0.3:0.2:0.3: 1.2; the mixture obtained by mixing is made into the combustion-supporting particles 43 with a plurality of pores through mud refining, molding, drying and sintering at 1300-1500 ℃.
C. Uniformly mixing a rare earth raw material, a binder, a pore-forming agent, a rare earth corrosion inhibitor and marine organism fermentation liquor according to a mass ratio of 8:0.3:0.1:0.3: 1.3; the mixture obtained by mixing is made into porous fuel oil modified particles 44 through pugging, forming, drying and sintering at 1300-1500 ℃.
The combustion-supporting particles 43 and the fuel oil modified particles 44 prepared according to the proportion are brown in appearance, hard in texture, uniform in particles, developed in micropores, high in porosity and good in roundness. The size of the prepared combustion-supporting particles 43 and the fuel modifying particles 44 is about 2-4 mm.
In summary, the fiber particles 13, the combustion-supporting particles 43 and the fuel modifying particles 44 manufactured by the manufacturing method disclosed in the third to fifth embodiments are filled in the outer cover 1 and the central tube 4, so that the finished filter element of the filter has a filtering function, the quality and the combustion value of fuel can be improved in the filtering process, the fuel can be saved in the engine under the same working condition, and the service life of the engine can be prolonged; experiments prove that the filter element of the filter can realize the average oil saving rate of more than 10 percent; the replacement range can be prolonged to 10 kilometres.
The above description is of the 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 and improvement made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (9)
1. a filter element of a filter is characterized by comprising a cylindrical outer cover, an upper end cover and a lower end cover, wherein the upper end cover and the lower end cover are respectively arranged at two axial ends of the outer cover; a central pipe communicated with the oil outlet is arranged in the outer cover, and the peripheral wall of the central pipe is provided with a filtering hole;
And an annular space defined by the inner peripheral wall of the outer cover and the outer peripheral wall of the central pipe is filled with fiber particles made of paper pulp.
2. The filter element of claim 1, wherein an upper partition plate and a lower partition plate with filter holes are arranged in the central tube, and particles are filled in the central tube between the upper partition plate and the lower partition plate, wherein the particles comprise combustion-supporting particles or/and fuel oil modifying particles in a porous sintered structure.
3. The filter element of claim 1, wherein an annular upper cover and a lower cover are arranged between the inner peripheral wall of the outer cover and the outer peripheral wall of the central tube, and the outer end surface of the upper cover is attached to the inner end surface of the upper cover, and the outer end surface of the lower cover is attached to the inner end surface of the lower cover; the annular space between the upper sealing cover and the lower sealing cover is filled with the fiber particles.
4. The filter element of claim 2 wherein the inner peripheral wall of the outer cover has an outer cover screen, the outer peripheral wall of the center tube has a center tube screen, and the inner side of the upper partition has an upper partition screen.
5. The filter element of claim 4, wherein the housing screen is made of stainless steel, composite fiber, modified nylon, or non-woven material; the central tube filter screen is made of stainless steel, composite fibers, modified nylon or non-woven fabric materials; the upper clapboard filter screen is made of stainless steel, composite fiber, modified nylon or non-woven fabric materials.
6. the filter element of claim 4, wherein the outer cover filter screen has a filtration precision of 4-10 um, the center tube filter screen has a filtration precision of 1-4 um, and the upper partition filter screen has a filtration precision of 4-8 um.
7. the filter element of claim 1, wherein the fiber particles have a particle size of 1 to 5mm, and the fiber particles are provided with micropores having a pore size of 1 to 15 μm.
8. The filter element of claim 2, wherein the combustion-supporting particles and the fuel modifying particles each have a particle size of 2 to 4 mm; the quantity of the combustion-supporting particles is 1.5 times that of the fuel oil modifying particles.
9. A filter comprising a housing and further comprising a filter element according to any one of claims 1-8, the filter element being disposed within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920565974.2U CN209800144U (en) | 2019-04-24 | 2019-04-24 | Filter element of filter and filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920565974.2U CN209800144U (en) | 2019-04-24 | 2019-04-24 | Filter element of filter and filter |
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| CN209800144U true CN209800144U (en) | 2019-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043407A (en) * | 2019-04-24 | 2019-07-23 | 潍坊绿擎新材料科技有限公司 | A kind of filter element, filter element production method and filter |
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2019
- 2019-04-24 CN CN201920565974.2U patent/CN209800144U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043407A (en) * | 2019-04-24 | 2019-07-23 | 潍坊绿擎新材料科技有限公司 | A kind of filter element, filter element production method and filter |
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