CN102351281A - Fine-pitch multilayer pulse electric field flow treatment chamber - Google Patents
Fine-pitch multilayer pulse electric field flow treatment chamber Download PDFInfo
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- CN102351281A CN102351281A CN2011101958866A CN201110195886A CN102351281A CN 102351281 A CN102351281 A CN 102351281A CN 2011101958866 A CN2011101958866 A CN 2011101958866A CN 201110195886 A CN201110195886 A CN 201110195886A CN 102351281 A CN102351281 A CN 102351281A
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Abstract
The invention relates to a fine-pitch multilayer pulse electric field flow process chamber, comprising a plurality of layered parallel treatment chambers consisting of a plurality of metal plate electrodes and insulating thin layers; the insulating thin layers are arranged between two metal plate electrodes; the insulating thin layers need to be specially cut out to form a streamline treatment chamber between two metal plate electrodes; and thickness of the insulating thin layers is an electrode distance. Metal plate electrodes are in staggered arrangement; two ends of each metal plate electrode are respectively connected by a metal screw to play roles of fixing and conduction. Therefore, only metal plate electrodes at two end need to be connected with a pulse power supply; the multilayer fine-pitch plate electrodes can reduce pulse power supply production costs, namely no high voltage is required to reach a high field density; besides a field is uniformly distributed to reduce edge effect and facilitate liquid circulation. The apparatus with a small volume is in favor of application of the pulse electric field treatment technology to civil use field.
Description
Technical field
The present invention relates to the sterilising plant that a kind of domestic use of water purifies, particularly a kind of little spacing multilayer is applicable to the pulsed electrical field flowing process chamber of medium voltage.
Background technology
It is low that pulse electric field technology has treatment temp, and sterilizing time is short, and it is low to consume energy, advantages such as no chemical by-product, thereby obtain extensive concern.Present pulsed electrical field treatment chamber is bigger, often need adopt pulsed electric field form can kill bacteria electric field.This type of overwhelming majority device still is in the laboratory study stage, is not widely used in industry and civil area.Owing to, have the problem of non-uniform electric in the treatment chamber in the influence of factors such as electrode shape, make that each partial strength of electric field differs greatly between two electrodes, cause the too high part of strength of electric field possibly produce arc-over; Perhaps electric-field strength is spent the treatment effect that low part possibly not reach nominal strength of electric field.Again because the systematic research of paired pulses electric field treatment is based on the comparatively large capacity treatment chamber basically, so need high-voltage pulse generator.For example; The patent No. is that 200410011305 Chinese invention patent discloses a kind of pulsed electric field treatment unit, and the patent No. is that 200710008437 Chinese invention patent discloses a kind of pulsed electrical field treatment chamber that can be used for continuous high voltage pulse electric field equipment.This type device volume is big, and cost is high, and manufacture difficulty is bigger, and stability is bad.The microgap treatment chamber then can use the low voltage pulse producer to realize same sterilising effect, but single microgap treatment chamber treatment capacity is few, and the plate electrode square edge has fringing effect, is prone to produce electrical spark.
Therefore, be badly in need of a kind of pulsed electrical field disinfection equipment of simple in structure, cost is low, use range is wide effectively material handling.
Summary of the invention
In view of this; In order to address the above problem; The present invention propose a kind of simple in structure, cost is low, the effective pulsed electrical field disinfection equipment of material handling; Not only can enlarge the treatment chamber capacity through a plurality of electrodes of cascade; Can also under low, obtain high electric field; Solve the problem that the pulsed electrical field sterilization must be adopted high-voltage pulse power source equipment, reduced the cost of pulse power equipment.Treatment chamber is designed to the streamlined fringing effect that can reduce the plate electrode square edge, and is convenient to material stream passed.The plate electrode that employing is misplaced makes electric field distribution even, is convenient to more effective material handling.
A kind of little spacing multilayer pulsed electrical field flowing process provided by the invention chamber comprises at least one positive electrode, at least one negative potential, at least two heat insulating laminas and the box body that insulate; Said positive electrode and negative electricity be plate electrode and relative fixed placement very; Said two insulation layers are arranged at respectively on the opposite face of positive and negative electrode; Form treatment chamber between said two insulation layer opposite faces; Said positive electrode is connected with the two poles of the earth of the pulse power respectively with negative potential; The power line direction of electric field is vertical with treatment chamber Flow of Goods and Materials direction between said positive electrode and the negative potential, and said positive and negative electrode is sealed in the insulation box body.
Further, said heat insulating lamina comprises first heat insulating lamina and second heat insulating lamina, and the medial recess of said first heat insulating lamina and second heat insulating lamina forms the wide streamlined treatment chamber in narrow centre, two ends between said first heat insulating lamina and second heat insulating lamina;
Further, the width of said first heat insulating lamina is greater than the width of second heat insulating lamina and the first heat insulating lamina opposite position;
Further, said positive electrode upper and lower ends is fixed through first metal screw, and said negative potential upper and lower ends is fixed through second metal screw;
Further, said positive and negative electrode is respectively arranged with first connecting groove and second connecting groove, and said insulation booth body side surface is provided with first connection jaws and second connection jaws, and said first connection jaws links to each other with first connecting groove, and said second connection jaws links to each other with second connecting groove;
Further, said insulation box body is provided with entrance and exit.Said entrance and exit is connected with treatment chamber, and the side that said insulation box body offers inlet is provided with the groove with treatment chamber width coupling, and said inlet is positioned at the central authorities at groove position.The side that said insulation box body offers outlet is provided with the groove with treatment chamber width coupling, and said outlet is positioned at the central authorities at groove position;
Further, said positive and negative electrode is the metal plate electrode.Said positive and negative electrode also is provided with hydrophilic coating, and said hydrophilic coating thickness is 0 to 5 micron;
Further, said metal plate electrodes use stainless steel is made;
Further, described heat insulating lamina adopts the tetrafluoroethylene material to make;
Further, said positive and negative electrode comprises 12 metal plates, said metal plate along the screw rod direction is parallel can be overlapping.
The invention has the advantages that: adopt the cascade multi-electrode not only can enlarge the treatment chamber capacity; Can also under the low pressure condition, just can obtain high electric field; Solved the problem that the pulsed electrical field sterilization must be adopted high-voltage pulse power source equipment; Reduced the cost of pulse power equipment; Energy consumption is relatively low like this; Can further improve capacity usage ratio, install little; Treatment chamber is designed to the streamlined fringing effect that can reduce the plate electrode square edge, and is convenient to material stream passed; The plate electrode that employing is misplaced, electric field distribution is even, is convenient to more effective material handling; The electrodes use metal screw is fixed, and only needs to connect external power source at two ends and can realize all corresponding positive and negative electrode conductings; Simultaneously, adopt screw rod to fix, be convenient to counter electrode and dismantle, clean and change.Therefore, the present invention has reduced pulse power voltage greatly, and cost reduces, and security improves, and helps pulse electric field technology and gets into civil area.
Other advantage of the present invention, target and characteristic will be set forth in specification sheets subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from practice of the present invention, obtain instruction to investigating hereinafter.Target of the present invention and other advantage can be passed through following specification sheets, claims, and the structure that is particularly pointed out in the accompanying drawing realizes and obtains.
Description of drawings
In order to make the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is described in further detail below, wherein:
Fig. 1 is the treatment chamber synoptic diagram that the present invention removes top end cover;
Fig. 2 is an electrode structure synoptic diagram of the present invention;
Fig. 3 is a seal box synoptic diagram of the present invention;
Fig. 4 is the single processing unit schematic internal view of the present invention;
Fig. 5 is a seal box schematical top view of the present invention;
Fig. 6 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.01 m/s) of wide 2 cm passages;
Fig. 7 is wide 2 cm of inlet, exports the exit velocity distribution plan (inlet velocity is 0.01 m/s) of wide 2 cm passages;
Fig. 8 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.01 m/s) of wide 4 cm passages;
Fig. 9 is wide 2 cm of inlet, exports the exit velocity distribution plan (inlet velocity is 0.01 m/s) of wide 4 cm passages;
Figure 10 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.01 m/s) of wide 6 cm passages;
Figure 11 is Fig. 7 wide 2 cm that enter the mouth, and exports the exit velocity distribution plan (inlet velocity is 0.01 m/s) of wide 6 cm passages;
Figure 12 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.001 m/s) of wide 4 cm passages;
Figure 13 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.02 m/s) of wide 4 cm passages.
Embodiment
Below will combine accompanying drawing, the preferred embodiments of the present invention will be carried out detailed description; Should be appreciated that preferred embodiment only for the present invention is described, rather than in order to limit protection scope of the present invention.
Fig. 1 is the treatment chamber synoptic diagram that the present invention removes top end cover; Embodiment provided by the invention adopts 6 positive electrodes and 6 negative potentials, and Fig. 2 is an electrode structure synoptic diagram of the present invention; Fig. 3 is a seal box synoptic diagram of the present invention; Fig. 4 is single processing unit schematic internal view of the present invention.As shown in the figure: a kind of little spacing multilayer pulsed electrical field flowing process provided by the invention chamber comprises at least one positive electrode 1, at least one negative potential 2, at least two heat insulating laminas 13 and insulation box bodys 12; Said positive electrode 1 is that plate electrode and relative fixed are placed with negative potential 2; Said two insulation layers 13 are arranged at respectively on the opposite face of positive and negative electrode; Form treatment chamber 3 between said two insulation layer 13 opposite faces; Said positive electrode 1 is connected with the two poles of the earth of the pulse power respectively with negative potential 2; The power line direction of electric field is vertical with treatment chamber 3 Flow of Goods and Materials directions between said positive electrode 1 and the negative potential 2, and said positive and negative electrode is sealed in the insulation box body 12; During actual the placement, box keeps flat, and promptly pending liquid can advance from the left side, and the right goes out.
Further improvement as the foregoing description; Said heat insulating lamina 13 comprises first heat insulating lamina 131 and second heat insulating lamina 132; The medial recess of said first heat insulating lamina 131 and second heat insulating lamina 132 forms up-narrow and down-wide streamlined treatment chamber between said first heat insulating lamina 131 and second heat insulating lamina 132.
As the further improvement of the foregoing description, the thickness of said first heat insulating lamina 131 is greater than the thickness of second heat insulating lamina 132 and first heat insulating lamina, 131 opposite positions.
As the further improvement of the foregoing description, said positive electrode upper and lower ends is fixing through first metal screw 4, and said negative potential upper and lower ends is fixing through second metal screw 5.
Further improvement as the foregoing description; Said positive and negative electrode is respectively arranged with first connecting groove 6 and second connecting groove 7; Second connecting groove 7 is corresponding with first connecting groove, 6 positions in opposite side electrode position; Said insulation box body 12 sides are provided with first connection jaws 8 and second connection jaws 9; Second connection jaws is corresponding with 8 positions at first connection jaws, 8 offsides; Said first connection jaws 8 links to each other with first connecting groove 6; Said second connection jaws 9 links to each other with second connecting groove 7; First connecting groove 6 on the positive and negative electrode of insulation box body 12 inside; Second connecting groove 7 is corresponding with first connection jaws 8 and second connection jaws, 9 positions of outside respectively; Connect, realize being connected with pulse power equipment again.
Further improvement as the foregoing description; Said insulation box body 12 is provided with inlet 10 and outlet 11, and said inlet 10 and outlet 11 are connected with treatment chamber 3, and all positive and negative electrodes fix; Be placed in sealing box body 12 internal spaces, common formation can be used for processed continuously treatment chamber; The side that said insulation box body offers inlet is provided with the groove 14 with treatment chamber 3 width coupling; Seal box outlet inboard groove is corresponding with 14 positions at seal box inlet inboard groove 14 offsides; Said inlet is positioned at the central authorities at groove position; The side that said insulation box body offers outlet is provided with the groove with treatment chamber 3 width coupling, and said outlet is positioned at the central authorities at groove position.
As the further improvement of the foregoing description, said positive and negative electrode is the metal plate electrode; Said positive and negative electrode also is provided with hydrophilic coating, and said hydrophilic coating thickness is 0 to 5 micron.
As the further improvement of the foregoing description, said metal plate electrodes use stainless steel is made.
As the further improvement of the foregoing description, described heat insulating lamina adopts the tetrafluoroethylene material to make.
Further improvement as the foregoing description; Said positive and negative electrode comprises 12 metal plates; Said metal plate along the screw rod direction is parallel can be overlapping; First metal screw 4 comprises that two metal screws are individually fixed in the positive electrode upper and lower ends; Second metal screw 5 comprises that two metal screws are individually fixed in the negative potential upper and lower ends, altogether fixing, the conducting of four screw rod realization homopolarities.
Separate by heat insulating lamella between every pair of positive and negative electrode, form treatment chamber, have connecting groove 6,7, conveniently link to each other with pulsed electrical field equipment the two poles of the earth in two end electrodes.Said number of poles can increase or reduce according to actual needs, produces the different quantities treatment chamber, realizes different single treatment amounts.Said heat insulating lamella thickness also can suitably be adjusted, as 200 microns, and 300 microns or bigger thickness, and can be, but the direct insulating material of processing hundreds of micron thickness in metal electrode 2 both sides without heat insulating lamella.Said electrode with metal screw fix, conducting, be convenient to counter electrode and dismantle, clean and change.
The shape of heat insulating lamina 13 such as the dash area among Fig. 4, the streamlined treatment chamber 3 that intermediate formation is up-narrow and down-wide, in order to answer with the electrode pair that is misplaced out, left and right sides insulation layer width is also asymmetric.
Metal plate positive and negative electrode 1,2 materials are stainless steel or can select more corrosion resistant metal electrode.Said heat insulating lamina 13 or insulating coating 13 materials are tetrafluoroethylene.Said seal box 12 also can adopt tetrafluoroethylene to make.
Describe the working process of using single treatment chamber below in detail:
Be placed on that the treatment chamber of insulation in the box body place sidewards, promptly tape handling liquid gets into from the left side, and flow out on the right side, and the use that a plurality of treatment chambers can be together in series during actual the use further improves sterilising effect.
Use individual layer static treatment chamber (promptly a positive electrode, a negative potential are formed); Strength of electric field is 20 kV/cm; 50 of pulse numbers; Pulse width is 50 microns; During recurrent intervals 400 ms, intestinal bacteria have 3.22 one magnitude to descend, when being actually used in flowing process; Pulse-repetition is much higher, more helps sterilization.
Electrode size can be adjusted according to actual needs, extremely wide 10 cm of this instance power taking, and long 15 cm, the width of actual treatment chamber can suitably be regulated, but it is wide preferably to satisfy the narrow outlet of inlet; Number of poles is 12,200 microns of electrode distances, and thickness of electrode 1 mm, the seal box size can be regulated according to electrode used therein quantity, and promptly interior size is for just holding multi-layered electrode, dark 5 mm of its two ends groove.
Fig. 6 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.01 m/s) of wide 2 cm passages; Fig. 7 is wide 2 cm of inlet, exports the exit velocity distribution plan (inlet velocity is 0.01 m/s) of wide 2 cm passages; Fig. 8 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.01 m/s) of wide 4 cm passages; Fig. 9 is wide 2 cm of inlet, exports the exit velocity distribution plan (inlet velocity is 0.01 m/s) of wide 4 cm passages; Figure 10 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.01m/s) of wide 6 cm passages; Figure 11 is wide 2 cm of inlet, exports the exit velocity distribution plan (inlet velocity is 0.01 m/s) of wide 6 cm passages; Figure 12 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.001 m/s) of wide 4 cm passages; Figure 13 is wide 2 cm of inlet, exports the velocity profile line (inlet velocity is 0.02 m/s) of wide 4 cm passages.Can find out that from these figure when the inlet exit width was consistent, entire treatment passage medium velocity distributed more inhomogeneous comparatively speaking; Certainly, be not that exit width is the bigger the better, when width was excessive, both sides speed was low excessively, and liquid accumulates in and possibly cause the liquid temperature rise excessive in the treatment channel.So take all factors into consideration, that this instance is selected is wide 2 cm of inlet, exports wide 4 cm, and the centre is the wideest to be the treatment channel of 7 cm.
As a treatment chamber that is applicable to Continuous Flow; Need control its flow velocity; Especially the present invention is the microgap passage; Should guarantee that treatment solution receives enough pulse numbers in passage; Want simultaneously enough treatment capacities of guarantor unit's time; Produce the possibility of bubble in the time of also will reducing liquid communication, more need suitable flow velocity.Can find out that from Fig. 8,12,13 when inlet velocity reached 0.02 m/s, velocity flow profile began the irregular that becomes in the passage, have bubble to produce easily, inlet velocity is low more, and whole passage velocity flow profile is even more.Composite factor considers, can select inlet velocity at 0.001 m/s between 0.01 m/s.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. little spacing multilayer pulsed electrical field flowing process chamber is characterized in that: comprise at least one positive electrode (1), at least one negative potential (2), two heat insulating laminas (13) and insulation box body (12) at least; Said positive electrode (1) is that plate electrode and relative fixed are placed with negative potential (2); Said two insulation layers (13) are arranged at respectively on the opposite face of positive and negative electrode; Form treatment chamber (3) between said two insulation layers (13) opposite face; Said positive electrode (1) is connected with the two poles of the earth of the pulse power respectively with negative potential (2); The power line direction of electric field is vertical with treatment chamber (3) Flow of Goods and Materials direction between said positive electrode (1) and the negative potential (2), and said positive and negative electrode is sealed in the insulation box body (12).
2. little spacing multilayer pulsed electrical field flowing process according to claim 1 chamber; It is characterized in that: said heat insulating lamina (13) comprises first heat insulating lamina (131) and second heat insulating lamina (132); The medial recess of said first heat insulating lamina (131) and second heat insulating lamina (132) forms the wide streamlined treatment chamber in narrow centre, two ends between said first heat insulating lamina (131) and second heat insulating lamina (132).
3. little spacing multilayer pulsed electrical field flowing process according to claim 2 chamber is characterized in that: the width of said first heat insulating lamina (131) is greater than the width of second heat insulating lamina (132) with first heat insulating lamina (131) opposite position.
4. little spacing multilayer pulsed electrical field flowing process according to claim 3 chamber is characterized in that: said positive electrode upper and lower ends is fixing through first metal screw (4), and said negative potential upper and lower ends is fixing through second metal screw (5).
5. little spacing multilayer pulsed electrical field flowing process according to claim 4 chamber; It is characterized in that: said positive and negative electrode is respectively arranged with first connecting groove (6) and second connecting groove (7); Said insulation box body (12) side is provided with first connection jaws (8) and second connection jaws (9); Said first connection jaws (8) links to each other with first connecting groove (6), and said second connection jaws (9) links to each other with second connecting groove (7).
6. little spacing multilayer impulse electric field flowing process according to claim 5 chamber; It is characterized in that: said insulation box body (12) is provided with inlet (10) and outlet (11); Said inlet (10) and outlet (11) are connected with treatment chamber (3); The side that said insulation box body offers inlet is provided with the groove (14) with process chamber (3) width coupling; Said inlet is positioned at the central authorities at groove position; The side that said insulation box body offers outlet is provided with the groove (15) with process chamber (3) width coupling, and said outlet is positioned at the central authorities at groove position.
7. little spacing multilayer pulsed electrical field flowing process according to claim 6 chamber, it is characterized in that: said positive and negative electrode is the metal plate electrode; Said positive and negative electrode also is provided with hydrophilic coating, and said hydrophilic coating thickness is 0 to 5 micron.
8. little spacing multilayer pulsed electrical field flowing process according to claim 7 chamber is characterized in that: said metal plate electrodes use stainless steel is made.
9. little spacing multilayer pulsed electrical field flowing process according to claim 8 chamber is characterized in that: described heat insulating lamina adopts the tetrafluoroethylene material to make.
10. little spacing multilayer pulsed electrical field flowing process according to claim 9 chamber, it is characterized in that: said positive and negative electrode comprises 12 metal plates, said metal plate along the screw rod direction is parallel can be overlapping.
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| CN2011101958866A CN102351281A (en) | 2011-07-13 | 2011-07-13 | Fine-pitch multilayer pulse electric field flow treatment chamber |
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| CN2011101958866A CN102351281A (en) | 2011-07-13 | 2011-07-13 | Fine-pitch multilayer pulse electric field flow treatment chamber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104981434A (en) * | 2012-11-21 | 2015-10-14 | 香港科技大学 | Pulsed electric field for drinking water disinfection |
| CN108110621A (en) * | 2017-12-15 | 2018-06-01 | 浙江工商大学 | The board-like high electric field elementary cell and reactor of a kind of anti-surface leakage |
| CN114988538A (en) * | 2022-07-14 | 2022-09-02 | 广西大学 | Circulating water sterilization system based on pulse electric field treatment technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6090259A (en) * | 1997-10-06 | 2000-07-18 | Southeastern Trading, Llp | Liquid deionization apparatus having independently powered carbon-reinforced electrode structures |
| CN2728495Y (en) * | 2004-05-27 | 2005-09-28 | 福州大学 | Stream line cold electric arc sterilizer |
| CN101597099A (en) * | 2009-07-03 | 2009-12-09 | 重庆大学 | A kind of disinfecting charge layer induced by hydroelectric field method and device |
-
2011
- 2011-07-13 CN CN2011101958866A patent/CN102351281A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6090259A (en) * | 1997-10-06 | 2000-07-18 | Southeastern Trading, Llp | Liquid deionization apparatus having independently powered carbon-reinforced electrode structures |
| CN2728495Y (en) * | 2004-05-27 | 2005-09-28 | 福州大学 | Stream line cold electric arc sterilizer |
| CN101597099A (en) * | 2009-07-03 | 2009-12-09 | 重庆大学 | A kind of disinfecting charge layer induced by hydroelectric field method and device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104981434A (en) * | 2012-11-21 | 2015-10-14 | 香港科技大学 | Pulsed electric field for drinking water disinfection |
| CN104981434B (en) * | 2012-11-21 | 2017-04-19 | 香港科技大学 | Pulsed electric field for drinking water disinfection |
| CN108110621A (en) * | 2017-12-15 | 2018-06-01 | 浙江工商大学 | The board-like high electric field elementary cell and reactor of a kind of anti-surface leakage |
| CN108110621B (en) * | 2017-12-15 | 2019-11-26 | 浙江工商大学 | A kind of board-like high electric field basic unit and reactor of anti-surface leakage |
| CN114988538A (en) * | 2022-07-14 | 2022-09-02 | 广西大学 | Circulating water sterilization system based on pulse electric field treatment technology |
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Application publication date: 20120215 |