CN115400474A - Filtering device - Google Patents

Filtering device Download PDF

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Publication number
CN115400474A
CN115400474A CN202211043492.3A CN202211043492A CN115400474A CN 115400474 A CN115400474 A CN 115400474A CN 202211043492 A CN202211043492 A CN 202211043492A CN 115400474 A CN115400474 A CN 115400474A
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CN
China
Prior art keywords
filter
filter vat
filter screen
vat
barrel
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
CN202211043492.3A
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Chinese (zh)
Other versions
CN115400474B (en
Inventor
陈鸿瑜
陈立
李振兴
吴兴兵
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.)
Guizhou Davos Optoelectronic Co ltd
Original Assignee
Guizhou Davos Optoelectronic 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.)
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Publication date
Application filed by Guizhou Davos Optoelectronic Co ltd filed Critical Guizhou Davos Optoelectronic Co ltd
Priority to CN202211043492.3A priority Critical patent/CN115400474B/en
Publication of CN115400474A publication Critical patent/CN115400474A/en
Application granted granted Critical
Publication of CN115400474B publication Critical patent/CN115400474B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The utility model relates to the field of filtration technology, specifically disclose a filtering device, it includes filter vat and filter screen, filter vat bottom central authorities connect the filter screen, the filter vat inboard is equipped with the deformation diaphragm all around, the filter vat upper end articulates there is the bung, be equipped with air inlet and gas outlet on the bung, filter vat outside fixedly connected with compressed air source, compressed air source passes through trachea and air inlet intercommunication, air inlet department is equipped with first motorised valve, gas outlet department is equipped with the second motorised valve, be equipped with the single-pole double-throw switch on the bucket wall of filter vat, the single-pole double-throw switch communicates with first motorised valve and second motorised valve electric property, the single-pole and the deformation diaphragm fixed connection of single-pole double-throw switch. The atmospheric pressure drives the deformation diaphragm and constantly takes place deformation, turns over the printing ink in the filter vat when the deformation diaphragm is out of shape, avoids the granule impurity in the printing ink to continuously pile up and block up the filter screen on the filter screen, influences the follow-up filtration efficiency of printing ink, and the deformation diaphragm constantly takes place deformation moreover and accelerates printing ink filtration speed.

Description

Filtering device
Technical Field
The invention relates to the technical field of filtration, in particular to a filtering device.
Background
The colorful decorative patterns on the glass are formed by printing the glass with glass ink. The glass printing ink is also called glass glaze and glass printing material, and is a pasty printing material formed by mixing and stirring coloring material and connecting material, wherein a plurality of particle impurities are filled in the glass printing ink, and if better filtering treatment is not carried out, the particle impurities can form raised foreign matters on the surface of glass during printing, so that the surface of the glass is rough and not beautiful, and therefore the glass printing ink must be filtered to filter out the particle impurities before printing.
The current chinese patent discloses a printing ink high pressure filter equipment, the patent number is "CN201921491703.3", it includes filter vat and toper filter screen, the filter vat top is equipped with the top cap, the toper filter screen is connected to the filter vat bottom, pressurize the filter vat inner space between toper filter screen and the top cap through the air pump, utilize atmospheric pressure pressurization can improve the filtration efficiency to the printing ink, because the printing ink consistency is higher, after printing ink passes through the filter screen for a long time and filters, particle impurity in the printing ink can be attached to on the filter screen, block up the filter screen, lead to filtration efficiency lower and lower.
Disclosure of Invention
The invention aims to provide a filtering device to solve the problem that particle impurities in ink are gradually accumulated on a filter screen to block the filter screen in the ink filtering process, so that the ink filtering speed is lower and lower.
In order to achieve the purpose, the technical scheme is as follows:
the utility model provides a filter equipment, including filter vat and filter screen, filter vat bottom central authorities open there is the filtration mouth, filtration mouth department is connected with vertical distribution's filter screen, the filter screen is the long tube-shape of middle fretwork, the filter vat inboard is equipped with the deformation diaphragm that is waist shape all around, vacuole formation between the bucket wall of deformation diaphragm and filter vat, the filter vat upper end articulates there is the bung, be equipped with air inlet and gas outlet on the bung, filter vat outside fixedly connected with compressed air source, compressed air source passes through trachea and air inlet intercommunication, air inlet department is equipped with first motorised valve, gas outlet department is equipped with the second motorised valve, be equipped with the single-pole double-throw switch on the bucket wall of filter vat, single-pole double-throw switch and first motorised valve and second motorised valve electric connection, the single-pole and the deformation diaphragm swing joint of single-pole double-throw switch.
The basic principle of the scheme is as follows: opening a barrel cover, pouring ink to be filtered into a filter barrel, closing the barrel cover, wherein the initial state of a deformation diaphragm is a position far away from the inner side of the filter barrel, the deformation diaphragm is linked with a single-pole double-throw switch to open a first electric valve, a second electric valve is closed, a compressed air source pressurizes the space in the filter barrel between a filter screen and the barrel cover, the air pressure accelerates the filtering speed of the ink, when the air pressure is increased to a certain value, the deformation diaphragm instantaneously expands from inside to outside, a vacuum zone is formed at the edge of the filter barrel, the ink rapidly flows to the vacuum zone to enable the ink to reversely scour the filter screen, particle impurities accumulated on the filter screen are scoured away, when the deformation diaphragm is attached to the inner side of the filter barrel, the deformation diaphragm is linked with the single-pole double-throw switch to close the first electric valve, the second electric valve is opened, an air outlet begins to exhaust outwards, the compressed air source stops providing air to the filter barrel, the deformation diaphragm is instantly far away from the two sides of the filter barrel to be extruded towards the middle part when the air pressure is lost to a certain value, the deformation linked with the single-pole double-throw switch to open the first electric valve, the deformation diaphragm is opened, the second electric valve is repeatedly, and the ink is filtered until the ink is filtered.
The scheme has the advantages that:
1. atmospheric pressure drives deformation diaphragm and constantly expands or extrudees to the filter vat both sides, deformation diaphragm expands or when extrudeing with the filter screen cooperation stir the printing ink in the filter vat, provide atmospheric pressure in to the filter vat when compressed air source, deformation diaphragm expands to the filter vat both sides in the twinkling of an eye, make the filter vat edge form the vacuum zone, printing ink can flow rapidly and fill toward the vacuum zone, thereby adnexed granule impurity on the filter vat receives printing ink to erode and breaks away from the filter screen this moment, avoid granule impurity in the printing ink to continuously pile up and block up the filter screen on the filter screen, influence the follow-up filtration efficiency of printing ink.
2. The deformation diaphragm continuously deforms to expand or extrude the space in the filter barrel, so that the filtering speed of the printing ink can be increased.
Furthermore, the filter screen extends into the filter vat, and the filter screen highest point flushes with the 3/2 department of filter vat height, and the part of the filter screen that extends into in the filter vat is equipped with a plurality of evenly distributed's mesh all around, and the part of the filter screen that extends outside the filter vat forms the tubulose and the opening of not establishing the mesh and down. The highest position of the filter screen which is in a cuboid shape and is hollowed in the middle is flush with the 3/2 position of the height of the filter barrel, so that the filtering area is increased, and the filtering speed of the printing ink is accelerated.
Furthermore, the middle part around the filter vat is equipped with the magnet that adsorbs the deformation diaphragm. In-process of gas outlet gassing, when atmospheric pressure in the filter vat is less than the magnet adsorption affinity, iron can keep deformation diaphragm and filter vat inboard to paste certain time mutually, guarantees the gas that emits that the gas outlet can last, guarantees simultaneously that first motorised valve keeps closing, and deformation diaphragm can not kick-back at once.
Further, the filter screen bottom is equipped with connects the storage bucket, and the filter vat outside is equipped with the receiver, has accomodate alcohol and rag in the receiver. Alcohol and rag are taken from the storage box and are cleaned with the material receiving barrel before filtration is not measured, so that secondary contamination of the ink by the material receiving barrel is avoided.
Further, an arc-shaped handle for pulling the barrel cover to open and close is arranged above the barrel cover. The barrel cover is convenient to lift and open through the arc-shaped handle.
Furthermore, a sealing rubber ring is arranged at the joint of the filter screen and the filter barrel. The sealing rubber ring strengthens the sealing performance of the connection between the filter screen and the filter barrel, and prevents the ink from leaking in the filtering process.
Drawings
FIG. 1 is a schematic sectional view of an embodiment of the present invention in elevation;
FIG. 2 is a schematic top view of an embodiment of the present invention.
Reference numerals in the drawings of the specification include: the filter vat 1, filter screen 2, sealing washer 3, connect storage bucket 4, receiver 5, deformation diaphragm 6, magnet 7, bung 8, air inlet 9, gas outlet 10, arc handle 11, compressed air source 12, trachea 13, first motorised valve 14, second motorised valve 15, single-pole double-throw switch 16.
Detailed Description
The following is further detailed by way of specific embodiments:
the embodiment is basically as shown in the attached figure 1:
the utility model provides a filter equipment, as shown in figure 1, includes square filter vat 1 and cylindrical filter screen 2, and 1 bottom central authorities of filter vat open has circular filtration mouth, and filtration mouth department threaded connection has vertical distribution's filter screen 2, and filter screen 2 is the long tube-shape of middle fretwork, and threaded connection department cover is equipped with 3 sealed effects of reinforcing of sealing washer. The upper part of the filter screen 2 extends into the filter vat 1, the highest part of the filter screen 2 is flush with the 3/2 part of the height of the filter vat, a plurality of uniformly distributed meshes are arranged around the part of the filter screen 2 extending into the filter vat 1, the lower part of the filter screen 2 extends out of the filter vat 1, and the part of the filter screen 2 extending out of the filter vat 1 forms a tubular shape without meshes and has a downward opening. 2 bottoms of filter screen are equipped with and connect storage bucket 4, and 1 outsides of filter vat are equipped with receiver 5, have accomodate alcohol and rag (for showing in the picture) in the receiver 5, before filtering at every turn, all need will connect the storage bucket to scrub the sanitization with rag and alcohol. A waist-shaped deformation diaphragm 6 is arranged around the inner side of the filter barrel 1, a cavity is formed between the deformation diaphragm 6 and the barrel wall of the filter barrel 1, and magnets 7 for adsorbing the deformation diaphragm 6 are arranged around the middle of the filter barrel 1. The upper end of the filter barrel 1 is hinged with a barrel cover 8, the barrel cover 8 is provided with an air inlet 9, an air outlet 10 and an arc-shaped handle 11 which is convenient for pulling the barrel cover 8 to open and close, the outer side of the filter barrel 1 is fixedly connected with a compressed air source 12, the compressed air source 12 is communicated with the air inlet 9 through an air pipe 13, a first electric valve 14 is arranged at the air inlet 9, a second electric valve 15 is arranged at the air outlet 10, a single-pole double-throw switch 16 is arranged on the barrel wall of the filter barrel 1, the single-pole double-throw switch 16 is electrically communicated with the first electric valve 14 and the second electric valve 15, and a single pole of the single-pole double-throw switch 16 is hinged with the deformable diaphragm 6 through a ball.
The specific implementation process is as follows:
and opening the barrel cover 8, and pouring the ink to be filtered into the filter barrel 1, wherein the liquid level of the ink cannot exceed 2/3 of the height of the filter barrel 1. Closing the barrel cover 8, wherein the deformable membrane 6 is positioned far away from the inner side of the filter barrel 1, the deformable membrane 6 is linked with the single-pole double-throw switch 16 to open the first electric valve 14, the second electric valve 15 is closed, the compressed air source 12 pressurizes the space in the filter barrel 1 between the filter screen 2 and the barrel cover 8, the air pressure accelerates the ink filtering speed, the filtered ink flows into the receiving barrel 4 from the bottom end of the filter screen 2 to be recovered, when the air pressure in the filter barrel 1 is increased to be more than 0.6MPa, the internal pressure of the filter barrel 1 reaches the deformation pressure of the deformable membrane 6, the deformable membrane 6 is instantly expanded from inside to outside to be attached to the inner side of the filter barrel 1, a vacuum zone can be formed at the edge of the filter barrel 1, the ink rapidly flows to the vacuum zone to scour the filter screen 2 reversely, particle impurities accumulated on the filter screen 2 are scoured away, the filter screen 2 is prevented from being blocked, the subsequent filtering speed is prevented from being influenced, the deformable membrane 6 is adsorbed by the magnet 7, the deformable membrane 6 can be linked with the single-pole double-throw switch 16 to close the first electric valve 14, the second air source 15 is opened, the air outlet 10 starts to exhaust, and the compressed air to stop providing air to the filter barrel 1; in-process of gas outlet 10 gassing, when the resilience force of deformation diaphragm 6 is less than magnet 7 adsorption affinity, deformation diaphragm 6 can not inwards kick-back, because magnet 7 is to the restraint of deformation diaphragm 6, magnet 7 can keep deformation diaphragm 6 and filter vat 1 inboard certain time of pasting mutually, guarantee that gas outlet 10 can last emit gas, release atmospheric pressure is less than 0.3MPa back in filter vat 1, deformation diaphragm 6 breaks away from the magnet and kick-backs in the twinkling of an eye and keeps away from filter vat 1 lateral wall, when deformation diaphragm 6 kick-backs to initial condition, link single-pole double-throw switch 16 again and make 14 doors of first motorised valve open, second motorised valve 15 closes, so relapse, filter up until printing ink. The deformation diaphragm 6 of the device continuously deforms and expands or extrudes the two sides of the filter barrel 1, and ink in the filter barrel 1 is stirred while expanding or extruding, so that the ink filtering speed is accelerated.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (6)

1. The utility model provides a filter equipment, includes filter vat and filter screen, its characterized in that: the utility model discloses a filter vat, including the filter vat, the filter vat bottom center is opened there is the filtration mouth, filter mouth department can dismantle the filter screen that is connected with vertical distribution, the filter screen is the long tube-shape of middle fretwork, the filter vat inboard is equipped with the deformation diaphragm that is waist shape all around, vacuole formation between the bucket wall of deformation diaphragm and filter vat, the filter vat upper end articulates there is the bung, be equipped with air inlet and gas outlet on the bung, filter vat outside fixedly connected with compressed air source, compressed air source passes through trachea and air inlet intercommunication, air inlet department is equipped with first motorised valve, gas outlet department is equipped with the second motorised valve, be equipped with the single-pole double-throw switch on the bucket wall of filter vat, single-pole double-throw switch and first motorised valve and second motorised valve electric connection, single-pole double-throw switch's single-pole and deformation diaphragm swing joint.
2. A filter arrangement according to claim 1 wherein: the filter screen extends into the filter vat, and the filter screen highest point flushes with the 3/2 department of filter vat height, and the part that extends the filter screen in the filter vat is equipped with a plurality of evenly distributed's mesh all around, and the part that extends the filter screen outside the filter vat forms the tubulose that does not establish the mesh and the opening is down.
3. A filter arrangement according to claim 1 wherein: and magnets for adsorbing the deformable membrane are arranged in the middle of the periphery of the filter barrel.
4. A filter arrangement according to claim 2, wherein: the bottom end of the filter screen is provided with a material receiving barrel, the outer side of the filter barrel is provided with a storage box, and alcohol and cleaning cloth are stored in the storage box.
5. A filter arrangement according to claim 1 wherein: and an arc-shaped handle for pulling the barrel cover to open and close is arranged above the barrel cover.
6. A filter arrangement according to claim 1 wherein: and a sealing rubber ring is arranged at the joint of the filter screen and the filter barrel.
CN202211043492.3A 2022-08-29 2022-08-29 Filtering device Active CN115400474B (en)

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CN202211043492.3A CN115400474B (en) 2022-08-29 2022-08-29 Filtering device

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Application Number Priority Date Filing Date Title
CN202211043492.3A CN115400474B (en) 2022-08-29 2022-08-29 Filtering device

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CN115400474B CN115400474B (en) 2023-07-07

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Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910556A1 (en) * 1969-03-01 1970-09-10 Holzmann Philipp Ag Process for the production of foundation piles from in-situ concrete with extensions of the pile shaft and the pile base, as well as internal formwork for carrying out the process
US4113618A (en) * 1975-12-08 1978-09-12 Hitachi, Ltd. Method of and apparatus for solid-liquid separation
JPS577210A (en) * 1980-06-13 1982-01-14 Sanshin Seisakusho:Kk Method and apparatus for continuously and repeatedly washing filter material of filter machine
JPS63315112A (en) * 1987-06-18 1988-12-22 Nippon Atom Ind Group Co Ltd Washing method of ceramic filter
JPH10277321A (en) * 1997-04-07 1998-10-20 Brother Ind Ltd Cleaning device
US6116429A (en) * 1999-06-23 2000-09-12 Kirsgalvis; Richard D. Filter housing extension kit
JP2005144399A (en) * 2003-11-19 2005-06-09 Kurita Water Ind Ltd Filter washing method, filtration treatment method and filtration apparatus
JP2007537854A (en) * 2004-05-20 2007-12-27 ウォーター・メイドゥン・リミテッド Fluid filter
CN202088656U (en) * 2010-10-18 2011-12-28 临安南洋装饰纸有限公司 Vibrating type ink filtering barrel of gravure printing machine
JP2013013872A (en) * 2011-07-06 2013-01-24 Yumekkusu:Kk Filtration apparatus
KR20130073109A (en) * 2011-12-23 2013-07-03 코웨이 주식회사 Water storage tank and water purifier having the same
JP2013169492A (en) * 2012-02-20 2013-09-02 Fanuc Ltd Filter for use in impurity filtering apparatus, and machine tool equipped with impurity filtering apparatus
CN203750243U (en) * 2014-01-23 2014-08-06 苏州佳宏光电有限公司 Printing ink filter device
CN207805392U (en) * 2017-12-18 2018-09-04 太阳雨集团有限公司 A kind of campaign-styled auto-flushing ultrafiltration membrane filter device
CN207899823U (en) * 2017-12-26 2018-09-25 广州发展集团股份有限公司 Maintenance compressed gas filtering sweeping device
CN111544978A (en) * 2020-05-19 2020-08-18 杭州昕华信息科技有限公司 Liquefied gas Y-shaped filter and method for filtering particulate matters in liquefied gas
CN111999161A (en) * 2020-08-24 2020-11-27 中国水产科学研究院长江水产研究所 Portable water pollutant enrichment device
CN214634418U (en) * 2021-04-30 2021-11-09 浙江美浓材料科技有限公司 Printing ink filter equipment

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910556A1 (en) * 1969-03-01 1970-09-10 Holzmann Philipp Ag Process for the production of foundation piles from in-situ concrete with extensions of the pile shaft and the pile base, as well as internal formwork for carrying out the process
US4113618A (en) * 1975-12-08 1978-09-12 Hitachi, Ltd. Method of and apparatus for solid-liquid separation
JPS577210A (en) * 1980-06-13 1982-01-14 Sanshin Seisakusho:Kk Method and apparatus for continuously and repeatedly washing filter material of filter machine
JPS63315112A (en) * 1987-06-18 1988-12-22 Nippon Atom Ind Group Co Ltd Washing method of ceramic filter
JPH10277321A (en) * 1997-04-07 1998-10-20 Brother Ind Ltd Cleaning device
US6116429A (en) * 1999-06-23 2000-09-12 Kirsgalvis; Richard D. Filter housing extension kit
JP2005144399A (en) * 2003-11-19 2005-06-09 Kurita Water Ind Ltd Filter washing method, filtration treatment method and filtration apparatus
JP2007537854A (en) * 2004-05-20 2007-12-27 ウォーター・メイドゥン・リミテッド Fluid filter
CN202088656U (en) * 2010-10-18 2011-12-28 临安南洋装饰纸有限公司 Vibrating type ink filtering barrel of gravure printing machine
JP2013013872A (en) * 2011-07-06 2013-01-24 Yumekkusu:Kk Filtration apparatus
KR20130073109A (en) * 2011-12-23 2013-07-03 코웨이 주식회사 Water storage tank and water purifier having the same
JP2013169492A (en) * 2012-02-20 2013-09-02 Fanuc Ltd Filter for use in impurity filtering apparatus, and machine tool equipped with impurity filtering apparatus
CN203750243U (en) * 2014-01-23 2014-08-06 苏州佳宏光电有限公司 Printing ink filter device
CN207805392U (en) * 2017-12-18 2018-09-04 太阳雨集团有限公司 A kind of campaign-styled auto-flushing ultrafiltration membrane filter device
CN207899823U (en) * 2017-12-26 2018-09-25 广州发展集团股份有限公司 Maintenance compressed gas filtering sweeping device
CN111544978A (en) * 2020-05-19 2020-08-18 杭州昕华信息科技有限公司 Liquefied gas Y-shaped filter and method for filtering particulate matters in liquefied gas
JP6780209B1 (en) * 2020-05-19 2020-11-04 杭州▲しん▼華信息科技有限公司 Y-type liquefied gas filter and method for filtering granules in liquefied gas using it
CN111999161A (en) * 2020-08-24 2020-11-27 中国水产科学研究院长江水产研究所 Portable water pollutant enrichment device
CN214634418U (en) * 2021-04-30 2021-11-09 浙江美浓材料科技有限公司 Printing ink filter equipment

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