CN102527110A - Controllable high-density constant-temperature membrane filter plate and formation method - Google Patents

Controllable high-density constant-temperature membrane filter plate and formation method Download PDF

Info

Publication number
CN102527110A
CN102527110A CN2011104430221A CN201110443022A CN102527110A CN 102527110 A CN102527110 A CN 102527110A CN 2011104430221 A CN2011104430221 A CN 2011104430221A CN 201110443022 A CN201110443022 A CN 201110443022A CN 102527110 A CN102527110 A CN 102527110A
Authority
CN
China
Prior art keywords
constant temperature
plate
mold pressing
filter plate
constant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2011104430221A
Other languages
Chinese (zh)
Other versions
CN102527110B (en
Inventor
周立武
徐孝雅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xing Yuan environmental science and technology limited company
Original Assignee
Hangzhou Xingyuan Filter Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hangzhou Xingyuan Filter Technology Co Ltd filed Critical Hangzhou Xingyuan Filter Technology Co Ltd
Priority to CN201110443022.1A priority Critical patent/CN102527110B/en
Publication of CN102527110A publication Critical patent/CN102527110A/en
Application granted granted Critical
Publication of CN102527110B publication Critical patent/CN102527110B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention relates to a controllable high-density constant-temperature membrane filter plate and a formation method, which can ensure that a plastic membrane layer and a metal constant-temperature plate core can be bonded and also ensure that the plate core of the filter plate cannot deform when a membrane is directly stamped on the surface of the filter plate. The controllable high-density constant-temperature membrane filter plate comprises a constant-temperature plate core and a plastic membrane, wherein the plastic membrane is coated on the constant-temperature plate core, the core-plate surface of the constant-temperature plate core is a heat-radiation fin surface which is an uneven mat surface, and the plastic membrane is stamped or molded on the heat-radiation fin surface of the constant-temperature plate core by injection, and the plastic membrane is bonded with the concave-convex on the heat-radiation fin surface. The controllable high-density constant-temperature membrane filter plate has the following advantages: (1) due to the uneven mat surface designed on the heat-radiation fin surface, the controllable high-density constant-temperature membrane filter plate solves the problem of delamination of the metal constant-temperature plate core in the constant-temperature filter plate and the plastic membrane; and (2) due to the design of stamped gas-chamber module, the difficult problem of constant-temperature plate deformation caused by stamping the membrane on the constant-temperature filter plate is solved.

Description

Controllable type high density constant temperature dissepiment strainer plate and forming method
Technical field
The present invention relates to a kind ofly can either guarantee that plastic membranous layer and metal temperature-constant plate core can make bonding; Can guarantee that again barrier film is on the filter plate face directly during mold pressing; Controllable type high density constant temperature dissepiment strainer plate and forming method that its filter plate plate core does not deform belong to membrane filter plate and make the field.
Background technology
All CN101249328B of the applicant, title " controllable type constant temperature dissepiment strainer plate and forming method ", it comprises plate core and barrier film, and the plate core is the temperature-constant plate core, and the fixed combinating surface of barrier film combines with the sealing of temperature-constant plate core, and the face of temperature-constant plate core is the heat radiation wing.Advantage: the one, fundamentally improve the radiating effect of temperature-constant plate core, guaranteed can not produce crystallization in the material processing procedure, guaranteed the filter quality of material; The 2nd, the faying face of temperature-constant plate core is the sealing structural design of coincideing for the heat radiation wing and with barrier film, has fundamentally blocked the seepage of fluid, has solved technical barriers such as the fluid leaks that exists between barrier film and plate core, demoulding, the service life of having improved filter plate widely; The 3rd, the core of temperature-constant plate core is designed to not only improved the radiating effect of temperature-constant plate core significantly, and reduced energy consumption widely by one or 2 or many end to end S shape runners that head and the tail are interconnected.Need improvedly to be: solve the fastness that combines of heat radiation finned surface and plastics face, avoid taking place segregation phenomenon; The 2nd, the difficult problem of solution constant temperature filter plate compressive deformation.
Summary of the invention
Purpose of design: on the basis of background technology; Design and a kind ofly can either guarantee that plastic membranous layer and metal temperature-constant plate core can make bonding; Can guarantee barrier film again on the filter plate face directly during mold pressing, controllable type high density constant temperature dissepiment strainer plate and forming method that its filter plate plate core does not deform.
Design: in order to realize above-mentioned purpose of design.1, the face of temperature-constant plate core be designed to the to dispel the heat face of wing and heat radiation finned surface is rough matsurface, is one of technical characterictic of the present invention.The purpose of doing like this is: because the roughness of heat radiation finned surface is big 5 microns and be covered with the face of the wing that dispel the heat, when the fusion mold was pressed above that, matsurface formed each other with on it plastic foil and pins down, and had avoided separating of temperature-constant plate core and plastic membranous layer.2, the design of mold pressing air chamber mould is two of a technical characterictic of the present invention.The purpose of doing like this is: because mold pressing air chamber mould middle part has many air flues; Many air flue all is communicated with high-pressure gas circuit; And high-pressure gas circuit is communicated with source of the gas through electromagnetic gas valve, therefore when the filter plate that is molded is positioned at it, seals around filter plate and diaphragm seal faying face and the mold pressing air chamber mould; And cavity constitutes the air chamber in the mold pressing air chamber mould in the filter plate; The high pressure draught that acts in this air chamber is given uniform support force of filter plate, the size of this support force with act on the pressure equal and opposite in direction on the patrix, thereby the difficult problem of the constant temperature filter plate distortion that is caused when having solved constant temperature filter plate mould pressing barrier film.
Technical scheme 1: a kind of controllable type high density constant temperature filter plate; It comprises temperature-constant plate core, plastic foil; The plastic foil bag is multiple on the temperature-constant plate core; The central layer face of said temperature-constant plate core is rough matsurface for heat radiation finned surface, the face of heat radiation finned surface, the plastic foil mold pressing or be injection-moulded on the heat radiation finned surface of temperature-constant plate core and with the heat radiation finned surface on uneven bonding.
Technical scheme 2: the sealing surface that a kind of forming method of controllable type high density constant temperature dissepiment strainer plate, constant temperature filter plate are put into below mold pressing air chamber mould and the constant temperature filter plate cooperates with mold pressing air chamber mould sealing surface all around, and the eardrum face that is arranged in the constant temperature filter plate of mold pressing air chamber mould is equipped with the gasbag-type core rod; Fusion behind the plastic cement is moulded the one side of the eardrum face of annotating the constant temperature filter plate; In the time of then with patrix and mold pressing air chamber mould matched moulds, in the air chamber of mold pressing air chamber mould the high pressure draught of input act on the noncontact face of constant temperature filter plate and the pressure of high pressure draught with act on the pressure equal and opposite in direction on the patrix, after the compression molding; The pressure release of mold pressing air chamber; Open patrix, promptly obtain integrated single face controllable type high density constant temperature dissepiment strainer plate, or continue single face controllable type high density constant temperature dissepiment strainer plate turned out and put into mold pressing air chamber mould; Be equipped with the formula core rod of air bag at the eardrum face of temperature-constant plate core; Melt plastic cement is annotated on the eardrum face of constant temperature filter plate, then simultaneously with patrix and mold pressing air chamber mould matched moulds, high pressure draught act on the single face controllable type high density constant temperature dissepiment strainer plate face and with the molding pressure equal and opposite in direction of patrix; After the compression molding; High pressure draught is closed, and opens patrix, promptly obtains integrated two-sided controllable type high density constant temperature dissepiment strainer plate.
Technical scheme 3: a kind of shaped device of controllable type high density constant temperature dissepiment strainer plate; It comprises shaping mould; Said shaping mould is made up of patrix, mold pressing air chamber mould and high-pressure gas circuit and source of the gas, and mold pressing air chamber mould middle part has many air flues and all is communicated with high-pressure gas circuit, and the high-pressure gas circuit air inlet mouth of pipe is communicated with the electromagnetic gas valve outlet; The electromagnetic gas valve import is communicated with source of the gas, and the electromagnetic gas valve control end is connected with the controller signals end.
The present invention compares with background technology, and the one, the face of heat radiation finned surface is the design of uneven matsurface, has solved the phenomenon of thermostat metal plate core and plastic foil layering in the constant temperature filter plate; The 2nd, the design of mold pressing air chamber mould, the difficult problem of the temperature-constant plate core that has been caused when having solved constant temperature filter plate mould pressing barrier film distortion.
Description of drawings
Fig. 1 is the broken section structural representation of controllable type high density constant temperature dissepiment strainer plate.
Fig. 2 is the structural representation of the shaped device of controllable type high density constant temperature dissepiment strainer plate.
The specific embodiment
Embodiment 1: with reference to accompanying drawing 1.A kind of controllable type high density constant temperature filter plate; It comprises temperature-constant plate core 1, plastic foil 2; Plastic foil 2 bags are multiple on temperature-constant plate core 1; The central layer face of said temperature-constant plate core 1 is rough matsurface for heat radiation finned surface 3, the face of heat radiation finned surface 3, plastic foil 2 mold pressings or be injection-moulded on the heat radiation finned surface 3 of temperature-constant plate core 1 and with heat radiation finned surface 3 on uneven bonding.The roughness of said heat radiation finned surface 3 is big 5 microns, and manufacture craft can be a rolling forming, or electric spark processing shaping, or the chemical attack shaping, and all is prior art, does not do detailed statement at this.
Embodiment 2: with reference to accompanying drawing 2.A kind of shaped device of controllable type high density constant temperature dissepiment strainer plate; It comprises shaping mould; Said shaping mould is made up of patrix 6, mold pressing air chamber mould 11 and high-pressure gas circuit 7 and source of the gas, and mold pressing air chamber mould 11 middle parts have many air flues and all are communicated with high-pressure gas circuit 7, and the high-pressure gas circuit 7 air inlet mouths of pipe are communicated with electromagnetic gas valve 13 outlets; Electromagnetic gas valve 13 imports are communicated with source of the gas 14, and electromagnetic gas valve 13 control ends are connected with controller 12 signal ends.Said source of the gas 14 is blower fan or air pump.
Embodiment 3: on the basis of embodiment 1 and 2, the sealing surface that a kind of forming method of controllable type high density constant temperature dissepiment strainer plate, constant temperature filter plate 10 are put into below mold pressing air chamber mould 11 and the constant temperature filter plate 10 cooperates with mold pressing air chamber mould 11 sealing surface all around; The eardrum face that is arranged in the constant temperature filter plate 10 of mold pressing air chamber mould 11 is equipped with gasbag-type core rod 8, and the one side that the eardrum face of annotating constant temperature filter plate 10 is moulded in the fusion behind the plastic cement is then with patrix 6 with mold pressing air chamber mould 11 matched moulds the time; In the air chamber 9 of mold pressing air chamber mould 11 high pressure draughts of input act on the noncontact face of constant temperature filter plate 10 and the pressure of high pressure draught with act on the pressure equal and opposite in direction on the patrix 6; After the compression molding, patrix 6 is opened in 9 pressure releases of mold pressing air chamber; Promptly obtain integrated single face controllable type high density constant temperature dissepiment strainer plate; Or continue single face controllable type high density constant temperature dissepiment strainer plate turned out and put into mold pressing air chamber mould 11, be equipped with the formula core rod 8 of air bag at the eardrum face of temperature-constant plate core, melt plastic cement is annotated on the eardrum face of constant temperature filter plate 10; Then with patrix 6 and mold pressing air chamber mould 11 matched moulds while; High pressure draught act on the single face controllable type high density constant temperature dissepiment strainer plate face and with the molding pressure equal and opposite in direction of patrix 6, after the compression molding, high pressure draught is closed; Open patrix 6, promptly obtain integrated two-sided controllable type high density constant temperature dissepiment strainer plate.
When the pressure of the high pressure draught on acting on constant temperature filter plate 10 noncontact faces equaled the pressure of patrix 6 mold pressings, controller 12 instruction electromagnetic gas valves 13 were closed, and patrix 6 mold pressings put in place and get final product.
When the high pressure draught pressure on the effect single face controllable type high density constant temperature dissepiment strainer plate face equaled the pressure of patrix 6 mold pressings, controller 12 instruction electromagnetic gas valves 13 were closed, and patrix 6 mold pressings put in place and get final product.
What need understand is: though the foregoing description is to the mentality of designing of the present invention detailed text description of contrasting; But these text descriptions; Just the simple text of mentality of designing of the present invention is described; Rather than to the restriction of mentality of designing of the present invention, any combination, increase or modification that does not exceed in the mentality of designing scope of the present invention all falls in protection scope of the present invention.

Claims (7)

1. controllable type high density constant temperature filter plate; It comprises temperature-constant plate core (1), plastic foil (2); Plastic foil (2) bag is multiple on temperature-constant plate core (1); It is characterized in that: the central layer face of said temperature-constant plate core (1) is heat radiation finned surface (3), and the face of heat radiation finned surface (3) is rough matsurface, plastic foil (2) mold pressing or the heat radiation finned surface (3) that is injection-moulded in temperature-constant plate core (1) go up and with heat radiation finned surface (3) on uneven bonding.
2. controllable type high density constant temperature filter plate according to claim 1, it is characterized in that: the roughness of said heat radiation finned surface (3) is big 5 microns.
3. the forming method of a controllable type high density constant temperature dissepiment strainer plate; It is characterized in that: the sealing surface that constant temperature filter plate (10) is put into below mold pressing air chamber mould (11) and the constant temperature filter plate (10) cooperates with mold pressing air chamber mould (11) sealing surface all around; The eardrum face that is arranged in the constant temperature filter plate (10) of mold pressing air chamber mould (11) is equipped with gasbag-type core rod (8), and the one side that the eardrum face of annotating constant temperature filter plate (10) is moulded in the fusion behind the plastic cement is then with patrix (6) with mold pressing air chamber mould (11) matched moulds the time; In the air chamber (9) of mold pressing air chamber mould (11) high pressure draught of input act on the noncontact face of constant temperature filter plate (10) and the pressure of high pressure draught with act on the pressure equal and opposite in direction on the patrix (6); After the compression molding, patrix (6) is opened in mold pressing air chamber (9) pressure release; Promptly obtain integrated single face controllable type high density constant temperature dissepiment strainer plate; Or continue single face controllable type high density constant temperature dissepiment strainer plate turned out and put into mold pressing air chamber mould (11), be equipped with the formula core rod (8) of air bag at the eardrum face of temperature-constant plate core, melt plastic cement is annotated on the eardrum face of constant temperature filter plate (10); Then with patrix (6) and mold pressing air chamber mould (11) matched moulds while; High pressure draught act on the single face controllable type high density constant temperature dissepiment strainer plate face and with the molding pressure equal and opposite in direction of patrix (6), after the compression molding, high pressure draught is closed; Open patrix (6), promptly obtain integrated two-sided controllable type high density constant temperature dissepiment strainer plate.
4. the forming method of controllable type high density constant temperature dissepiment strainer plate according to claim 3; It is characterized in that: when the pressure of the high pressure draught on acting on constant temperature filter plate (10) noncontact face equals the pressure of patrix (6) mold pressing; Controller (12) instruction electromagnetic gas valve (13) is closed, and patrix (6) mold pressing puts in place and gets final product.
5. the forming method of controllable type high density constant temperature dissepiment strainer plate according to claim 3; It is characterized in that: when the high pressure draught pressure on the effect single face controllable type high density constant temperature dissepiment strainer plate face equals the pressure of patrix (6) mold pressing; Controller (12) instruction electromagnetic gas valve (13) is closed, and patrix (6) mold pressing puts in place and gets final product.
6. the shaped device of a controllable type high density constant temperature dissepiment strainer plate; It comprises shaping mould; It is characterized in that: said shaping mould is made up of patrix (6), mold pressing air chamber mould (11) and high-pressure gas circuit (7) and source of the gas, and mold pressing air chamber mould (11) middle part has many air flues and all is communicated with high-pressure gas circuit (7), and high-pressure gas circuit (7) the air inlet mouth of pipe is communicated with electromagnetic gas valve (13) outlet; Electromagnetic gas valve (13) import is communicated with source of the gas (14), and electromagnetic gas valve (13) control end is connected with controller (12) signal end.
7. the shaped device of controllable type high density constant temperature dissepiment strainer plate according to claim 6 is characterized in that: said source of the gas (14) is blower fan or air pump.
CN201110443022.1A 2011-12-27 2011-12-27 Controllable high-density constant-temperature membrane filter plate and formation method Active CN102527110B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110443022.1A CN102527110B (en) 2011-12-27 2011-12-27 Controllable high-density constant-temperature membrane filter plate and formation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110443022.1A CN102527110B (en) 2011-12-27 2011-12-27 Controllable high-density constant-temperature membrane filter plate and formation method

Publications (2)

Publication Number Publication Date
CN102527110A true CN102527110A (en) 2012-07-04
CN102527110B CN102527110B (en) 2014-11-26

Family

ID=46335883

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110443022.1A Active CN102527110B (en) 2011-12-27 2011-12-27 Controllable high-density constant-temperature membrane filter plate and formation method

Country Status (1)

Country Link
CN (1) CN102527110B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104922978A (en) * 2015-06-05 2015-09-23 徐小平 Production method for metal-film filter plate and filter element of asymmetric structure
CN116681268A (en) * 2023-08-03 2023-09-01 新仟意能源科技(成都)集团有限责任公司 Filter production line operation management method and system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4839045A (en) * 1987-01-23 1989-06-13 Lenser Verwaltungs-Gmbh Thermoplastic filter plate for a filter press
JPH09164307A (en) * 1996-11-07 1997-06-24 Mitsubishi Plastics Ind Ltd Filter plate
JP2007210323A (en) * 2006-01-10 2007-08-23 Mazda Motor Corp Molding method and apparatus for making resin molded article
CN101091845A (en) * 2007-01-24 2007-12-26 朱兴源 High efficiency multifunctional membrane and filter plate with long service life, and forming method
CN101158039A (en) * 2007-11-21 2008-04-09 南京航空航天大学 Method for preparing coating by laser cladding with squash method fore-put powder
CN101249328A (en) * 2007-04-09 2008-08-27 周立武 Controllable type constant temperature dissepiment strainer plate and forming method thereof
CN101462383A (en) * 2007-12-20 2009-06-24 深圳富泰宏精密工业有限公司 Moulding product
CN101483125A (en) * 2009-01-23 2009-07-15 谢灿生 Manufacturing method for integrated liner of alumina ceramic metal halogen lamp
CN101722608A (en) * 2007-04-09 2010-06-09 杭州兴源过滤科技股份有限公司 Die-pressing membrane filter plate and molding method thereof
WO2011037038A1 (en) * 2009-09-28 2011-03-31 コニカミノルタオプト株式会社 Die and molding method
CN202460234U (en) * 2011-12-27 2012-10-03 杭州兴源过滤科技股份有限公司 Controllable high-density constant-temperature membrane filter plate and forming device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4839045A (en) * 1987-01-23 1989-06-13 Lenser Verwaltungs-Gmbh Thermoplastic filter plate for a filter press
JPH09164307A (en) * 1996-11-07 1997-06-24 Mitsubishi Plastics Ind Ltd Filter plate
JP2007210323A (en) * 2006-01-10 2007-08-23 Mazda Motor Corp Molding method and apparatus for making resin molded article
CN101091845A (en) * 2007-01-24 2007-12-26 朱兴源 High efficiency multifunctional membrane and filter plate with long service life, and forming method
CN101249328A (en) * 2007-04-09 2008-08-27 周立武 Controllable type constant temperature dissepiment strainer plate and forming method thereof
CN101722608A (en) * 2007-04-09 2010-06-09 杭州兴源过滤科技股份有限公司 Die-pressing membrane filter plate and molding method thereof
CN101158039A (en) * 2007-11-21 2008-04-09 南京航空航天大学 Method for preparing coating by laser cladding with squash method fore-put powder
CN101462383A (en) * 2007-12-20 2009-06-24 深圳富泰宏精密工业有限公司 Moulding product
CN101483125A (en) * 2009-01-23 2009-07-15 谢灿生 Manufacturing method for integrated liner of alumina ceramic metal halogen lamp
WO2011037038A1 (en) * 2009-09-28 2011-03-31 コニカミノルタオプト株式会社 Die and molding method
CN202460234U (en) * 2011-12-27 2012-10-03 杭州兴源过滤科技股份有限公司 Controllable high-density constant-temperature membrane filter plate and forming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104922978A (en) * 2015-06-05 2015-09-23 徐小平 Production method for metal-film filter plate and filter element of asymmetric structure
CN116681268A (en) * 2023-08-03 2023-09-01 新仟意能源科技(成都)集团有限责任公司 Filter production line operation management method and system
CN116681268B (en) * 2023-08-03 2023-10-13 新仟意能源科技(成都)集团有限责任公司 Filter production line operation management method and system

Also Published As

Publication number Publication date
CN102527110B (en) 2014-11-26

Similar Documents

Publication Publication Date Title
CN101091845B (en) Membrane filter plate and forming method
CN101518932A (en) Simplified steam-heat and high-light injection mold with clutch type cooling structure
CN102922671A (en) Resin transfer moulding mold and resin transfer moulding molding system
CN104875364A (en) Plastics sucking molding machine and plastics sucking molding method
CN102527110A (en) Controllable high-density constant-temperature membrane filter plate and formation method
CN101249703B (en) Molding type diaphragm filtering plate and molding method
CN202460234U (en) Controllable high-density constant-temperature membrane filter plate and forming device
CN202556679U (en) Highlight injection mold of clutch type cooling structure
CN101722608B (en) Die-pressing membrane filter plate and molding method thereof
CN101575084A (en) Method for bonding polymeric microfluidic chip in die
CN205763745U (en) The hot runner structure of magnesium alloy mold
CN207481197U (en) Blow moulding machine forming die system
CN206287505U (en) Plastics sucking moulding device
CN102896750B (en) Injection mold
CN204773285U (en) Novel many needle valves of double thread cold flow way nozzle
CN204725828U (en) Plastic suction forming apparatus
CN107718498A (en) A kind of extrusion die for being used to produce plastic co-extrusion floor
CN201020309Y (en) Controllable constant temperature drumhead diaphragm filtering plate
CN101676012B (en) Forming method of controllable type constant temperature dissepiment strainer plate
CN201998386U (en) High-gross injection mold with clutch type cooling structure
CN101249328B (en) Controllable type constant temperature dissepiment strainer plate and forming method thereof
CN211467184U (en) Pressing die with ejection function for blowing pipeline
CN201483673U (en) Improvement structure of thermostat in lens processing mould
CN208263415U (en) A kind of suction type molding device of cellular thermoplastic plate
CN203031888U (en) Cooling structure for hot nozzle discharge port

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: XINGYUAN ENVIRONMENT TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: HANGZHOU XINGYUAN FILTER TECHNOLOGY CO., LTD.

CP03 Change of name, title or address

Address after: 311100, No. 1588, hope road, Hangzhou economic and Technological Development Zone, Yuhang District, Zhejiang, Hangzhou, Yuhang

Patentee after: Xing Yuan environmental science and technology limited company

Address before: 311113 Liangzhu Road, Liangzhu Town, Yuhang District, Zhejiang, Hangzhou, 10

Patentee before: Hangzhou Xingyuan Filter Technology Co., Ltd.