CN107055644B - Production process of composite filter element of tap water purifier - Google Patents
Production process of composite filter element of tap water purifier Download PDFInfo
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- CN107055644B CN107055644B CN201710316676.5A CN201710316676A CN107055644B CN 107055644 B CN107055644 B CN 107055644B CN 201710316676 A CN201710316676 A CN 201710316676A CN 107055644 B CN107055644 B CN 107055644B
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- woven fabric
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0435—Electret
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0622—Melt-blown
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtering Materials (AREA)
Abstract
The invention relates to a tap water purifier composite filter element production process, which belongs to the technical field of industrial materials and is processed into a tap water purifier composite filter element by compounding electrostatic fiber hot-rolled non-woven fabric filter media and electret melt-blown non-woven fabric electrostatic filter media in a multilayer manner. Compared with the prior art, the specific production process of the invention is that the polypropylene short fiber attached with static electricity is used as raw material, the polypropylene short fiber attached with static electricity is processed into the hot-rolled non-woven fabric filter medium of static electricity fiber by the hot-rolled non-woven fabric production process, and then the filter core is prepared by multilayer compounding with the static electricity filter medium of the electret melt-blown non-woven fabric. Compared with the traditional superfine fiber melt-blown filter core, the filter core has the advantages of small filtration resistance, high filtration efficiency, low energy consumption and low operation noise.
Description
Technical Field
The invention belongs to the technical field of industrial materials, and particularly relates to a production process of a composite filter element of a tap water purifier.
Background
Tap water processes generally comprise three steps; coagulating, adding aluminum chloride, aluminum sulfate or ferric chloride into raw water to generate substances such as suspended matters, colloids and the like which are easy to precipitate and crystallize. Then the mixture enters a sedimentation tank, after sedimentation for a certain time, the mixture flows out and is filtered (or siphoned and filtered) by turning over composed of quartz sand, and finally chlorine liquid is added for disinfection treatment.
Tap water pollution: tap water treatment processes are primary filtration of hundreds of tons of water and even tens of thousands of tons of water, and because the number of stages is too large, the filtration effect is difficult to ensure. Although bacteriostasis and sterilization are achieved by adding the chlorine liquid, the potential hazard is also serious in practice, and the trichloromethane generated by the chlorine is known to be a strong carcinogenic substance; even clean tap water passes through pipelines of several kilometers, which is well known as secondary pollution of tap water. Including galvanized pipe contamination, rusting of water pipes and faucets, and garbage contamination of high-rise water tanks, which all become hidden troubles of tap water.
Meanwhile, tap water is basically used in the existing rural areas, which is a huge achievement for the construction of new rural areas in China. According to statistics of relevant departments, the popularization rate of urban tap water purifiers reaches over 65%, and the urban tap water purifiers have a trend of gradually rising, along with the improvement of the quality of life requirements and the highlighting of water pollution problems, the health and environmental awareness of consumers are more and more mature, and tap water filtration is brought forward.
Most of filter cores for tap water purifiers in the current market are superfine fiber melt-blown filter cores, the traditional tap water superfine fiber melt-blown filter core adopts the filtering mechanism that countless traps formed among fibers and a large amount of specific surface area of the fibers are utilized to adsorb and capture tap water impurities through comprehensive effects of inertia, friction, collision and the like, and the existing tap water superfine fiber melt-blown filter core has the defects of large filtering resistance, low filtering efficiency and large running noise of the purifier. Various bacteria in water are easy to breed in the filter element and on the surface of the filter element, secondary pollution is formed, water quality is damaged, and the serious influence is caused to the human health.
There is therefore a great need in the art for a solution to this problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the composite tap water purifier filter element is produced through multilayer composite processing of electrostatic fiber hot rolled non-woven fabric filter medium and electret melt blown non-woven fabric electrostatic filter medium, and compared with traditional superfine fiber melt blown filter element, the composite filter element has small filtering resistance, high filtering efficiency, low energy consumption and low running noise.
In order to achieve the purpose, the invention provides a production process of a composite filter element of a tap water purifier, which is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step one, manufacturing an electrostatic fiber hot-rolled non-woven fabric filter medium
① bale breaking mixing of fibers
Taking polypropylene short fibers attached with static electricity as raw materials, roughly opening the fibers through a rough gear roller of an opener, and finely opening the coarsely opened fibers through a fine gear roller to obtain loose fibers with reduced static electric fields; loose fibers enter a large-bin cotton mixing machine through a conveying pipeline to be mixed;
② combing
Conveying the fibers fully mixed by the large-bin cotton mixer in the step ① to an air pressure quantitative cotton feeder through air flow, conveying the mixed fibers to a carding machine through pressure, adding a static electricity eliminating agent in the carding process, carding until a single-layer fiber web is formed, and conveying the fiber web to a disorderly device consisting of three pairs of rollers through a doffer and a cotton stripping roller to enable the longitudinal and transverse strength of the fiber web to be consistent;
③ feeding the fiber web obtained in step ② to the bonding area of a hot rolling mill through a web conveying curtain to carry out hot rolling bonding treatment, wherein the hot rolling temperature is 115-165 ℃, and the pressure is 2.5 x 103N/cm～7.5×103N/cm, after fusing and bonding the fiber net, naturally cooling to room temperature to obtain the electrostatic fiber hot-rolled non-woven fabric filter medium;
step two, manufacturing a melt-blown non-woven fabric filter medium
Taking polypropylene slices as raw materials, drying the polypropylene slices until the water content is 0.3%, feeding the dried polypropylene slices into a screw extruder, heating and melting the polypropylene slices into a polypropylene polymer, spraying the polypropylene polymer by a spray head after being metered by a metering pump, stretching and solidifying the polypropylene polymer by air flow to form fibers, and condensing the fibers onto a web forming device to obtain a melt-blown non-woven fabric filter medium, wherein the fiber fineness of the melt-blown non-woven fabric filter medium is 0.055 dtex-1.110 dtex;
step three, applying voltage to the melt-blown non-woven fabric filter medium obtained in the step two through an electret electrostatic device, wherein the applied voltage is 1 KV-10 KV, performing electret treatment to obtain an electret melt-blown non-woven fabric electrostatic filter medium, and simultaneously feeding the electret melt-blown non-woven fabric electrostatic filter medium and the electrostatic fiber hot-rolled non-woven fabric filter medium obtained in the step one into a compound machine to form a compound filter medium with a double-layer structure;
and step four, cutting the composite filter medium with the double-layer structure obtained in the step three by a winding and splitting machine according to the specification requirement of the tap water purifier, and processing the cut composite filter medium into the tap water purifier composite filter element with a plurality of layers by a paper folding machine.
Through the design scheme, the invention can bring the following beneficial effects:
the invention relates to a composite filter element of a tap water purifier, which is processed by compounding electrostatic fiber hot-rolled non-woven fabric filter media and electret melt-blown non-woven fabric electrostatic filter media in a multi-layer manner. Firstly, adopting static attached polypropylene short fiber as a raw material, processing the static attached polypropylene short fiber into a static fiber hot-rolled non-woven fabric filter medium by utilizing a hot-rolled non-woven fabric production process, and then compounding the static attached polypropylene short fiber with an electret melt-blown non-woven fabric static filter medium in a multi-layer manner to prepare the filter core. Compared with the traditional superfine fiber melt-blown filter core, the filter core has the advantages of small filtration resistance, high filtration efficiency, low energy consumption and low operation noise.
In addition to utilizing countless fiber traps in the filter medium, the electrostatic fiber hot-rolled non-woven fabric filter medium and the electret melt-blown non-woven fabric electrostatic filter medium have stronger electrostatic field and electrostatic charge, and the combined action of the electrostatic charge and the electrostatic field coulomb force greatly improves the filtering effect on impurities in water, various bacteria, bacilli and other harmful pollutants, and is far more than that of a superfine fiber melt-blown filter core. Meanwhile, the problem that the filter element can not be periodically replaced to cause the propagation of bacteria inside or on the surface of the filter element is solved, because the electrostatic fiber charges and the electrostatic field can effectively inhibit the propagation of bacteria and can effectively kill various bacteria, bacilli and other harmful pollutants in water, the tap water purifier composite filter element produced by the tap water purifier composite filter element production process provided by the invention provides safe and reliable technical guarantee for guaranteeing people to drink tap water, the application market development space is very large, and the economic benefit and the social benefit are very obvious.
Drawings
The invention is further described with reference to the following figures and detailed description:
FIG. 1 is a flow chart of the process for producing the electrostatic fibrous hot-rolled non-woven filter medium of the present invention.
FIG. 2 is a flow chart of a process for producing a melt blown nonwoven filter media of the present invention.
FIG. 3 is a schematic diagram of a process for combining an electrostatic fibrous hot-rolled nonwoven fabric filter medium with an electret melt-blown nonwoven fabric electrostatic filter medium according to the present invention.
In the figure: 1-screw extruder, 2-metering pump, 3-nozzle, 4-net forming device, 5-compounding machine, 6-winding splitting machine and 7-electret static device.
Detailed Description
The invention provides a production process of a composite filter element of a tap water purifier, which comprises the following steps as shown in figure 1, figure 2 and figure 3,
step one, manufacturing an electrostatic fiber hot-rolled non-woven fabric filter medium
① bale breaking mixing of fibers
Taking polypropylene short fibers attached with static electricity as raw materials, roughly opening the fibers through a rough gear roller of an opener, and finely opening the coarsely opened fibers through a fine gear roller to obtain loose fibers with reduced static electric fields; loose fibers enter a large-bin cotton mixing machine through a conveying pipeline to be mixed;
② combing
Conveying the fibers fully mixed by the large-bin cotton mixer in the step ① to an air pressure quantitative cotton feeder through air flow, conveying the mixed fibers to a carding machine through pressure, adding a static electricity eliminating agent in the carding process, carding until a single-layer fiber web is formed, and conveying the fiber web to a disorderly device consisting of three pairs of rollers through a doffer and a cotton stripping roller to enable the longitudinal and transverse strength of the fiber web to be consistent;
③ feeding the fiber web obtained in step ② to the bonding area of a hot rolling mill through a web conveying curtain to carry out hot rolling bonding treatment at the hot rolling temperature of 115-165 ℃ and the pressure of 2.5 x 103N/cm～7.5×103Under the action of N/cm, the fiber web is locally melted to generate bonding so that the fiber web is reinforced, and the fiber web is naturally cooled to room temperature after passing through a bonding area to form an electrostatic fiber hot-rolled non-woven fabric filter medium;
step two, manufacturing a melt-blown non-woven fabric filter medium
Taking polypropylene slices as raw materials, drying the polypropylene slices until the water content is 0.3%, feeding the dried polypropylene slices into a screw extruder 1, heating and melting the polypropylene slices into polypropylene polymer, spraying the polypropylene polymer by a spray head 3 after being metered by a metering pump 2, stretching the polypropylene polymer at the outlet of the spray head 3 by high-speed hot air, simultaneously supplementing cooling air from two sides of the spray head 3 to cool and solidify the fibers to form superfine fibers, and condensing the superfine fibers onto a net forming device 4 under the action of the air flow, thereby preparing the melt-blown non-woven fabric filter medium with the fiber fineness of 0.055 dtex-1.100 dtex;
step three, applying voltage to the melt-blown non-woven fabric filter medium obtained in the step two through an electret electrostatic device 7, wherein the applied voltage is 1 KV-10 KV, performing electret treatment, forming polarized electrostatic charge under the polarization effect of an electrostatic field, enabling the melt-blown non-woven fabric tape to be permanently electrostatic, forming an electret melt-blown non-woven fabric electrostatic filter medium, and feeding the electret melt-blown non-woven fabric electrostatic filter medium and the electrostatic fiber hot-rolled non-woven fabric filter medium obtained in the step one into a compound machine 5 at the same time to form a compound filter medium with a double-layer structure;
and step four, cutting the composite filter medium with the double-layer structure obtained in the step three by a winding and cutting machine 6 according to the specification requirements of different tap water purifiers, and processing the cut composite filter medium with the double-layer structure into the tap water purifier composite filter element with a plurality of layers on a filter element processing production line by a paper folding machine after cutting.
The invention relates to a tap water filter element which is prepared by compounding electrostatic fiber hot-rolled non-woven fabric filter media and electret melt-blown non-woven fabric electrostatic filter media in a multilayer manner. Compared with the traditional melt-blown filter core, the filter core has the advantages of small filtration resistance, high filtration efficiency, low machine energy consumption and low running noise. The filter core has the advantages that the tap water purification effect is good, the electrostatic fibers can effectively inhibit bacteria in the filter core and on the surface of the filter core from breeding, and simultaneously, various bacteria, bacilli and other harmful pollutants in the tap water can be effectively killed by the coulomb force of the electrostatic field of the electrostatic fibers. The quality of the filtered tap water is improved, and safe and reliable technical guarantee is provided for guaranteeing people to drink the tap water.
Claims (1)
1. A production process of a tap water purifier composite filter element is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step one, manufacturing an electrostatic fiber hot-rolled non-woven fabric filter medium
① bale breaking mixing of fibers
Taking polypropylene short fibers attached with static electricity as raw materials, roughly opening the fibers through a rough gear roller of an opener, and finely opening the coarsely opened fibers through a fine gear roller to obtain loose fibers with reduced static electric fields; loose fibers enter a large-bin cotton mixing machine through a conveying pipeline to be mixed;
② combing
Conveying the fibers fully mixed by the large-bin cotton mixer in the step ① to an air pressure quantitative cotton feeder through air flow, conveying the mixed fibers to a carding machine through pressure, adding a static electricity eliminating agent in the carding process, carding until a single-layer fiber web is formed, and conveying the fiber web to a disorderly device consisting of three pairs of rollers through a doffer and a cotton stripping roller to enable the longitudinal and transverse strength of the fiber web to be consistent;
③ feeding the fiber web obtained in step ② to the bonding area of a hot rolling mill through a web conveying curtain to carry out hot rolling bonding treatment, wherein the hot rolling temperature is 115-165 ℃, and the pressure is 2.5 x 103N/cm～7.5×103N/cm, after fusing and bonding the fiber net, naturally cooling to room temperature to obtain the electrostatic fiber hot-rolled non-woven fabric filter medium;
step two, manufacturing a melt-blown non-woven fabric filter medium
Taking polypropylene slices as raw materials, drying the polypropylene slices until the water content is 0.3%, feeding the dried polypropylene slices into a screw extruder, heating and melting the polypropylene slices into a polypropylene polymer, spraying the polypropylene polymer out of a spray head after being metered by a metering pump, stretching and solidifying the polypropylene polymer by air flow to form fibers, and condensing the fibers onto a web forming device to obtain a melt-blown non-woven fabric filter medium, wherein the fiber fineness of the melt-blown non-woven fabric filter medium is 0.055 dtex-1.100 dtex;
step three, applying voltage to the melt-blown non-woven fabric filter medium obtained in the step two through an electret electrostatic device, wherein the applied voltage is 1 KV-10 KV, performing electret treatment to obtain an electret melt-blown non-woven fabric electrostatic filter medium, and simultaneously feeding the electret melt-blown non-woven fabric electrostatic filter medium and the electrostatic fiber hot-rolled non-woven fabric filter medium obtained in the step one into a compound machine to form a compound filter medium with a double-layer structure;
and step four, cutting the composite filter medium with the double-layer structure obtained in the step three by a winding and splitting machine according to the specification requirement of the tap water purifier, and processing the cut composite filter medium into the tap water purifier composite filter element with a plurality of layers by a paper folding machine.
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| CN201710316676.5A CN107055644B (en) | 2017-05-08 | 2017-05-08 | Production process of composite filter element of tap water purifier |
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| CN201710316676.5A CN107055644B (en) | 2017-05-08 | 2017-05-08 | Production process of composite filter element of tap water purifier |
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| CN107055644B true CN107055644B (en) | 2020-04-21 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061567A (en) * | 2010-12-24 | 2011-05-18 | 欣龙控股（集团）股份有限公司 | Method and device for producing nonwoven fabric by thermal-calendering soft and smooth finishing |
| CN104606955A (en) * | 2014-12-30 | 2015-05-13 | 东华大学 | Method for preparing polytetrafluoroethylene/polypropylene composite needle punched filter felt |
| CN104711764A (en) * | 2015-04-14 | 2015-06-17 | 南通大学 | High-strength long-acting electret superfine-fiber PLA melt-blow non-woven material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8398752B2 (en) * | 2009-08-04 | 2013-03-19 | Jerry M. Brownstein | High efficiency low pressure drop synthetic fiber based air filter made completely from post consumer waste materials |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061567A (en) * | 2010-12-24 | 2011-05-18 | 欣龙控股（集团）股份有限公司 | Method and device for producing nonwoven fabric by thermal-calendering soft and smooth finishing |
| CN104606955A (en) * | 2014-12-30 | 2015-05-13 | 东华大学 | Method for preparing polytetrafluoroethylene/polypropylene composite needle punched filter felt |
| CN104711764A (en) * | 2015-04-14 | 2015-06-17 | 南通大学 | High-strength long-acting electret superfine-fiber PLA melt-blow non-woven material and preparation method thereof |
| CN104711764B (en) * | 2015-04-14 | 2017-03-01 | 南通大学 | High-tenacity long-acting electret superfine fibre PLA melt-blown non-woven material and preparation method |
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Denomination of invention: Production process of composite filter element for tap water purifier Effective date of registration: 20220722 Granted publication date: 20200421 Pledgee: Agricultural Bank of China Limited Liaoyuan branch Pledgor: JILIN PROVINCE HUAFANG ELECTROSTATIC MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2022220000042 |
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Date of cancellation: 20230714 Granted publication date: 20200421 Pledgee: Agricultural Bank of China Limited Liaoyuan branch Pledgor: JILIN PROVINCE HUAFANG ELECTROSTATIC MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2022220000042 |
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Denomination of invention: Production process of composite filter element for tap water purifier Effective date of registration: 20230717 Granted publication date: 20200421 Pledgee: Agricultural Bank of China Limited Liaoyuan branch Pledgor: JILIN PROVINCE HUAFANG ELECTROSTATIC MATERIAL TECHNOLOGY CO.,LTD.|Xing Tianbao Registration number: Y2023220000054 |