# US 11,027,228 B1 · Filtration device and filtration assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,027,228 B1 - Document ID: US11027228B1 - Status: Granted - Kind: B1 - Application number: 15/966,168 - Filed: 2018-04-30 - Granted: 2021-06-08 - Earliest claimed: 2018-04-30 - Assignees: Qingdao Ecopure Filter Co., Ltd. - Applicants: Qingdao Ecopure filter co., Ltd - Inventors: Zhibin Zou - Web page: https://patentgrep.com/patent/US11027228B1 ## CPC - B01D 35/30: Filter housing constructions - C02F 1/003: {using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices (C02F9/20 takes precedence)} - C02F 1/42: by ion-exchange (ion-exchange in general B01J) - B01D 2201/302: having inlet or outlet ports - B01D 2201/304: Seals or gaskets - C02F 1/283: {using coal, charred products, or inorganic mixtures containing them} - C02F 9/20: Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems - C02F 2001/427: {using mixed beds} - C02F 2201/004: Seals, connections - C02F 2201/006: Cartridges - C02F 2307/04: as part of a pitcher or jug - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) ## Abstract The present application discloses a filtration device. The filtration device comprises a housing, a lid and a filtration material. The housing comprises at least one outlet hole at a bottom of the housing. The lid is coupled to the housing and comprises at least one inlet hole at a top of the lid. The filtration material is disposed within the housing and comprises a top layer, a particulate treatment layer, an activated carbon fiber layer and a bottom layer. The particulate treatment layer is coupled to the top layer. The activated carbon fiber layer is coupled to the particulate treatment layer. The bottom layer is coupled between the activated carbon fiber layer and the bottom of the housing. A filtration assembly is also disclosed in the present application. ## Claims ### Claim 1 A filtration device, comprising: a housing comprising at least one outlet hole at a bottom of the housing; a lid coupled to the housing and comprising at least one inlet hole at a top of the lid; and a filtration material disposed within the housing and at least comprising: a top layer; a particulate treatment layer coupled to the top layer; an activated carbon fiber layer coupled to the particulate treatment layer; and a bottom layer coupled between the activated carbon fiber and the bottom of the housing, wherein the lid comprises two sets of inlets, each set of inlets comprises a plurality of inlet holes in a rotated spiral pattern, wherein the housing comprises two sets of outlets, each set of outlets comprises a plurality of outlet holes in a rotated spiral pattern, wherein the two sets of outlets are the same as orthographic projections of the two sets of inlets. ### Claim 2 (depends on 1) The filtration device as claimed in claim 1, wherein the particulate treatment layer comprises a mixed bed of cationic resin and anionic resin. ### Claim 3 (depends on 2) The filtration device as claimed in claim 2, wherein the cationic resin comprises hydrogen form ion exchange resin. ### Claim 4 (depends on 3) The filtration device as claimed in claim 3, wherein the cationic resin comprises sodium form ion exchange resin. ### Claim 5 (depends on 1) The filtration device as claimed in claim 1, wherein the particulate treatment layer comprises a water softener. ### Claim 6 (depends on 1) The filtration device as claimed in claim 1, wherein the lid further comprises a handle located between the two sets of the inlets. ### Claim 7 (depends on 1) The filtration device as claimed in claim 1, wherein the top layer and the bottom layer are nonwoven fabric layers. ### Claim 8 (depends on 1) The filtration device as claimed in claim 1, wherein the top layer and the bottom layer are filter sheets. ### Claim 9 A filtration assembly, comprising: a case; and a filtration device located inside the case, comprising: a housing comprising at least one outlet hole at a bottom of the housing; a lid coupled to the housing and comprising at least one inlet hole at a top of the lid; and a filtration material disposed within the housing and comprising: a top layer; a particulate treatment layer coupled to the top layer; an activated carbon fiber layer coupled to the particulate treatment layer; and a bottom layer coupled between the activated carbon fiber layer and the bottom of the housing, wherein the lid comprises two sets of inlets, each set of inlets comprises a plurality of inlet holes in a rotated spiral pattern, wherein the housing comprises two sets of outlets, each set of outlets comprises a plurality of outlet holes in a rotated spiral pattern, wherein the two sets of outlets are the same as orthographic projections of the two sets of inlets. ### Claim 10 (depends on 9) The filtration assembly as claimed in claim 9, wherein the particulate treatment layer comprises a mixed bed of cationic resin and anionic resin. ### Claim 11 (depends on 10) The filtration assembly as claimed in claim 10, the cationic resin comprises hydrogen form ion exchange resin. ### Claim 12 (depends on 11) The filtration assembly as claimed in claim 11, the cationic resin comprises sodium form ion exchange resin. ### Claim 13 (depends on 9) The filtration assembly as claimed in claim 9, wherein the particulate treatment layer comprises a water softener. ### Claim 14 (depends on 9) The filtration assembly as claimed in claim 9, wherein the top layer and the bottom layer are nonwoven fabric layers. ### Claim 15 (depends on 9) The filtration assembly as claimed in claim 9, wherein the top layer and the bottom layer are filter sheets.