CN107952370A - Piezoelectric transducer for cylindrical membrane component automatically cleaning technology and preparation method thereof - Google Patents
Piezoelectric transducer for cylindrical membrane component automatically cleaning technology and preparation method thereof Download PDFInfo
- Publication number
- CN107952370A CN107952370A CN201711172313.5A CN201711172313A CN107952370A CN 107952370 A CN107952370 A CN 107952370A CN 201711172313 A CN201711172313 A CN 201711172313A CN 107952370 A CN107952370 A CN 107952370A
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- China
- Prior art keywords
- piezoelectric transducer
- membrane component
- automatically cleaning
- cleaning technology
- cylindrical membrane
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/16—Rotary, reciprocated or vibrated modules
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Physical Vapour Deposition (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The present invention provides a kind of piezoelectric transducer for cylindrical membrane component automatically cleaning technology and preparation method thereof, belongs to field of environment engineering technology.The piezoelectric transducer includes membrane module body, elastic metallic basic unit, PZT piezoelectric material layers and nano silver electrode layer, is sequentially assembled into the membrane module with depth nanoscale cleaning effect from inside to outside.From the angle of Constructional Modal Analysis, provide resonant frequency, excitation chain offer certain frequency, the accumulation signal of amplitude are provided, make piezoelectrics driving membrane body and membrane structure internal gutter, channel surfaces that strong resonant interaction occur, promote outside the inorganic ion and micromolecular compound discharge film in film, contribute to reverse osmosis, nanofiltration backwash effect.Preparation condition of the present invention is excellent, with high frequent vibration mode and elasticity modulus, and easily transplanting in existing membrane module, so as to provide new technical method for the transformation of old technology, disclosure satisfy that the needs of every profession and trade reverse osmosis membrane cleaning technique upgrading to piezoelectric transducer.
Description
Technical field
The present invention relates to field of environment engineering technology, particularly relates to a kind of pressure for cylindrical membrane component automatically cleaning technology
Electric oscillator and preparation method thereof.
Background technology
Membrane technology is one of technological means that field of environment engineering has critical role.For a long time, membrane technology is further
The main bottleneck of popularization is membrane pollution problem.Fouling membrane is not only related to the service life and operating cost of membrane module, has an effect on
To the operational effect of water treatment technology.
The pollution of film and to deteriorate this be the key issue of membrane technology in practical applications.The enterprises such as electric power, chemical industry, are into one
Step improves the comprehensive utilization ratio of water resource, just must handle this technical barrier in face of brine waste.But traditional antipollution volume
Formula reverse osmosis membrane can not successfully manage all kinds of highly concentrated contaminated ions in brine waste, and there are the cycle of operation is short, dirty stifled feelings
Condition is difficult seriously and after cleaning the series technique problems such as recovery.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of piezoelectric vibration for cylindrical membrane component automatically cleaning technology
Body and preparation method thereof.
The piezoelectric transducer includes membrane module body, stainless steel oscillator metal-based layer, piezoelectric transducer and ring-type nano silver
Electrode layer, stainless steel oscillator metal-based layer, piezoelectric transducer and ring-type nano silver electrode layer sequentially attach to cylindrical membrane successively
On component body excircle.
Wherein, stainless steel oscillator metal-based layer is made of 304 stainless steels, thickness 1-3mm, is preferably 2mm, length and film
Component body is identical.
Piezoelectric transducer is PZT piezoelectric ceramic films, and the thickness of PZT piezoelectric ceramic films is 10~20mm, is preferably 15mm；
The length of PZT piezoelectric ceramic films is stainless steel base overall length 70%, and is centrosymmetrically arranged.According to different-thickness and length, determine
The different resonant frequency of cover half body (mode).
The method for preparing the piezoelectric transducer, process are as follows：
First, PZT piezoelectric ceramic films are formed on the stainless steel oscillator metal-based layer using magnetron sputtering method：By 304
Stainless steel is fixed in the sample panel in magnetic control sputtering device, 304 stainless steel both ends is covered, by Pb (Zr0.8, Ti0.2) O3Target
As in target chamber, PZT piezoelectric ceramic films are formed on 304 stainless steels, wherein, the operating condition of magnetic control sputtering device is：In inertia
Under gas shield, operating pressure is 0.2~1.1Pa, and DC electric power is 55~120W；
Then, silver nanofilm is prepared in magnetron sputtering on PZT piezoelectric ceramic film outer cylinder surfaces, is ring-type silver electricity
Pole layer, the operating condition of magnetic control sputtering device are：Under inert gas shielding, operating pressure is 0.03~1.0Pa, DC electric power
For 55~120W.
Wherein, when preparing PZT piezoelectric ceramic films, the DC electric power of magnetic control sputtering device is 100-120W；Ring-type is prepared to receive
During rice silver electrode layer, the DC electric power of magnetic control sputtering device is 80-95W.
Stainless steel oscillator metal-based layer and the distance between PZT piezoelectric ceramic films and ring-type nano silver electrode layer for 80~
550mm。
The pressure of master control room in magnetic control sputtering device is 2 × 10-7~3 × 10-3Pa。
Sputter temperature of the magnetic control sputtering device when preparing silver nanofilm and preparing PZT piezoelectric ceramic films is 20~350 DEG C；Magnetic
It is 20~200s to control sputtering time of the sputter when preparing silver nanofilm, and magnetic control sputtering device is when preparing PZT piezoelectric ceramic films
Sputtering time be 60~600s.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
The cylindrical membrane component automatically cleaning technology of the present invention is different from " cross-flow separation " technology of traditional Membrane cleaning, it is used
Water inlet direction is vertical with film surface, and prevents particulate matter from film surface by PZT piezoelectrics to provide elastic vibration for membrane body
Enrichment；Drive membrane body that resonance occurs by piezoelectric transducer, micropore in film, nanometer sky is shunk and is expanded, be able to maintain that
Membrane flux is unaffected, avoids the generation of film blockage problem, therefore with excellent antifouling property, high-recovery and long week
The ability of phase operation.And preparation condition of the present invention is excellent, has high frequent vibration mode and elasticity modulus, and piezoelectric transducer is easy
Transplant in existing membrane module, so as to provide new technical method for the transformation of old technology, disclosure satisfy that every profession and trade is reverse osmosis
The needs of Membrane cleaning technology upgrading transformation.
Brief description of the drawings
Fig. 1 is the piezoelectric transducer schematic diagram for cylindrical membrane component automatically cleaning technology of the present invention；
Fig. 2 is A-A directional profile figures in Fig. 1.
Wherein：1- reverse osmosis membrane filter elements；2- piezoelectric ceramic vibrator kinetoplasts；3- stainless steel linings bottom；4- filter core stents.
Embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of piezoelectric transducer for cylindrical membrane component automatically cleaning technology and preparation method thereof.
As shown in Figure 1, in the piezoelectric transducer stainless steel oscillator metal-based layer, piezoelectric transducer and ring-type silver electrode layer according to
Secondary order is attached on cylindrical membrane component body excircle.
The thickness of stainless steel oscillator metal-based layer thickness 1-3mm, PZT piezoelectric ceramic film is 10~30mm, and silver nanofilm is electric
The thickness of pole is 20~150um.The distribution of each material can be further improved using nanometer film, enables to insulation performance more
For stabilization.The present invention applies additional alternating current on stainless steel and Ag nanoparticle film electrodes, is imitated by the inverse piezoelectricity of piezoelectric ceramics
Strain should be produced, so as to drive stainless steel base to vibrate, producing ultrasonic wave makes membrane body resonate, and carries out Membrane cleaning.
The manufacture method of the piezoelectric transducer for being used for circular membrane module automatically cleaning technology of the present invention is illustrated below.
Stainless steel cylinder body after cleaning is fixed in the sample panel in magnetic control sputtering device, silver and PZT targets are distinguished
It is placed in 2 in magnetic control sputtering device target chambers, draw point body and silver and the distance between PZT targets are 300mm, magnetron sputtering
The pressure of master control room in instrument is 1 × 10-6Pa, draw point body both ends is handled using masking so that silver and PZT targets will not splash
It is mapped to draw point body both ends.First, Ag nanometers of dielectric films, magnetron sputtering is prepared in sputtering on stainless steel cylinder substrate inner wall
The operating condition of instrument is：Under argon gas protection, operating pressure 0.5Pa, DC electric power 100W, sputter temperature are 40 DEG C,
Sputtering time is 50s；Then, covered to sputter on the stainless steel cylinder outer wall of Ag nanometers of dielectric films on surface immediately and be prepared
PZT nanometer films, the operating condition of magnetic control sputtering device are：Under argon gas protection, operating pressure 1Pa, DC electric power 800W,
Sputter temperature is 80 DEG C, sputtering time 550s；Finally, it is being attached to the cylindrical of the PZT piezoelectric ceramics of stainless steel outer wall surface
Ag nanoparticle film electrodes are prepared in the sputtering of column surface, and sputtering operating condition is：Under argon gas protection, operating pressure 10-1Pa, directly
Galvanic electricity pressure is 100W, and sputter temperature is 200 DEG C, sputtering time 60s.
So as to finally obtain the piezoelectric transducer for cylindrical membrane component automatically cleaning technology of the present invention, stainless steel cylinder base
Body thickness 1-3mm, stainless steel cylinder outer wall surface is covered with the PZT piezoelectric ceramics that thickness is 10~30mm, in piezoelectric ceramics cylinder
Outer surface is covered with the Ag nanoparticle film electrodes that thickness is 20~150um.As shown in Fig. 2, reverse osmosis membrane filter element 1 is placed in filter core branch
On frame 4,1 outer side covers piezoelectric ceramic vibrator kinetoplast 2 of reverse osmosis membrane filter element and stainless steel lining bottom 3.
Application example
1 assembles commercial RO films, putamina in the way of attached drawing 2.It is thick if piezoelectric transducer height is highly consistent with membrane body
Spend for 2 millimeters, 1 millimeter of piezoelectric transducer and membrane body cylinder gap.When driving voltage is sinus wave patters, peak value is 100 volts, frequency
Rate is 28kHz, can significantly improve the colloidal substance of film surface deposition, and film permeation flux can improve more than 60%；Wherein shorten and shake
Kinetoplast and membrane body cylinder gap, vibrating effect can be improved by increasing driving voltage amplitude, improve film permeation flux.
2 assemble commercial RO films, putamina in the way of attached drawing 2.It is thick if piezoelectric transducer height is highly consistent with membrane body
Spend for 2 millimeters, 1 millimeter of piezoelectric transducer and membrane body cylinder gap.When driving voltage is sinus wave patters, peak value is 100 volts, frequency
Rate is 35kHz, can significantly improve the macromolecular substances of film inner duct blocking, and film permeation flux can improve more than 70%；Wherein contract
Short vibration body and membrane body cylinder gap, vibrating effect can be improved by increasing driving voltage amplitude, improve film permeation flux.
3 assemble commercial RO films, putamina in the way of attached drawing 2.It is thick if piezoelectric transducer height is highly consistent with membrane body
Spend for 2 millimeters, 1 millimeter of piezoelectric transducer and membrane body cylinder gap.When driving voltage is sinus wave patters, peak value is 100 volts, frequency
Rate is 40kHz, can significantly improve film inner duct block, the small molecule of absorption, ion etc., film permeation flux can improve 80% with
On；Wherein shorten vibrating body and membrane body cylinder gap, vibrating effect can be improved by increasing driving voltage amplitude, and it is logical to improve film infiltration
Amount.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
- A kind of 1. piezoelectric transducer for cylindrical membrane component automatically cleaning technology, it is characterised in that：Including membrane module body, no Become rusty steel oscillator metal-based layer, piezoelectric transducer and ring-type nano silver electrode layer, stainless steel oscillator metal-based layer, piezoelectric transducer and Ring-type silver electrode layer sequentially attaches on cylindrical membrane component body excircle successively.
- 2. the piezoelectric transducer according to claim 1 for cylindrical membrane component automatically cleaning technology, it is characterised in that：Institute State stainless steel oscillator metal-based layer to be made of 304 stainless steels, thickness 1-3mm, length is identical with membrane module body.
- 3. the piezoelectric transducer according to claim 1 for cylindrical membrane component automatically cleaning technology, it is characterised in that：Institute It is PZT piezoelectric ceramic films to state piezoelectric transducer, and piezoelectric vibration body length accounts for stainless steel oscillator metal-based layer length 70%, and center It is arranged symmetrically.
- 4. the piezoelectric transducer according to claim 3 for cylindrical membrane component automatically cleaning technology, it is characterised in that：Institute It is 15mm to state PZT piezoelectric ceramics film thickness.
- 5. prepare the method for the piezoelectric transducer for cylindrical membrane component automatically cleaning technology described in claim 1, its feature It is：First, PZT piezoelectric ceramic films are formed on the stainless steel oscillator metal-based layer using magnetron sputtering method：It is stainless by 304 Steel is fixed in the sample panel in magnetic control sputtering device, 304 stainless steel both ends is covered, by Pb (Zr0.8, Ti0.2) O3Target as In target chamber, PZT piezoelectric ceramic films are formed on 304 stainless steels, wherein, the operating condition of magnetic control sputtering device is：In inert gas Under protection, operating pressure is 0.2~1.1Pa, and DC electric power is 55~120W；Then, silver nanofilm is prepared in magnetron sputtering on PZT piezoelectric ceramic film outer cylinder surfaces, is ring-type nano silver electricity Pole layer, the operating condition of magnetic control sputtering device are：Under inert gas shielding, operating pressure is 0.03~1.0Pa, DC electric power For 55~120W.
- 6. the preparation method of the piezoelectric transducer according to claim 5 for cylindrical membrane component automatically cleaning technology, its It is characterized in that：During the preparation PZT piezoelectric ceramic films, the DC electric power of magnetic control sputtering device is 100-120W；Ring-type is prepared to receive During rice silver electrode layer, the DC electric power of magnetic control sputtering device is 80-95W.
- 7. the preparation method of the piezoelectric transducer according to claim 5 for cylindrical membrane component automatically cleaning technology, its It is characterized in that：The stainless steel oscillator metal-based layer and the distance between PZT piezoelectric ceramic films and ring-type nano silver electrode layer For 80~550mm.
- 8. the preparation method of the piezoelectric transducer according to claim 5 for cylindrical membrane component automatically cleaning technology, its It is characterized in that：The pressure of master control room in the magnetic control sputtering device is 2 × 10-7~3 × 10-3Pa。
- 9. the preparation method of the piezoelectric transducer according to claim 5 for cylindrical membrane component automatically cleaning technology, its It is characterized in that：Sputter temperature of the magnetic control sputtering device when preparing silver nanofilm and preparing PZT piezoelectric ceramic films is 20~350 ℃；Sputtering time of the magnetic control sputtering device when preparing silver nanofilm is 20~200s, and magnetic control sputtering device is preparing PZT piezoelectric ceramics Sputtering time during film is 60~600s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172313.5A CN107952370A (en) | 2017-11-22 | 2017-11-22 | Piezoelectric transducer for cylindrical membrane component automatically cleaning technology and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172313.5A CN107952370A (en) | 2017-11-22 | 2017-11-22 | Piezoelectric transducer for cylindrical membrane component automatically cleaning technology and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107952370A true CN107952370A (en) | 2018-04-24 |
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Application publication date: 20180424 |