CN204550127U - A kind of silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella - Google Patents
A kind of silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella Download PDFInfo
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- CN204550127U CN204550127U CN201520052285.3U CN201520052285U CN204550127U CN 204550127 U CN204550127 U CN 204550127U CN 201520052285 U CN201520052285 U CN 201520052285U CN 204550127 U CN204550127 U CN 204550127U
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Abstract
The utility model provides a kind of silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella, comprises silver ions generating unit and connected electrolytic silver ion burst size pilot circuit; Silver ions generating unit comprises housing, and the two side of housing is arranged with the flange of docking waterworks water circulating pump pipeline, enclosure interior roof is provided with a pair silver electrode; Silver ions burst size pilot circuit comprises power supply, central control circuit, constant-current control circuit and electrode control circuit.The utility model can kill the legionella in hot-water system at short notice; Biomembranously in effective suppression pipeline to grow; Can set the silver ions sterilizing unit working hour, the object of automatic intermittent work can be reached; With water pump linkage work, silver ions is fused in hot water pipe network system with uniform fluid flow, avoid that directly to add the mixing that silver ion solution causes uneven, particularly for legionella, heterotrophic bacterium and pipeline in existing system biomembranous kill with restraining effect remarkable.
Description
Technical field
The utility model relates to a kind of silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella.
Background technology
City secondary water supply system is as the terminal of water-supply systems, and its security is directly connected to the healthy of resident.Domestic hot-water is the important component part of city secondary water-supply.There is the biosafety issues such as legionella in current China hot water supply system, causes the extensive concern of society gradually.
The disinfection way that hot-water system often adopts has: partly sterilised and Systems Sterilizer.Partly sterilised refers to the mode that certain point of fixity is directly sterilized in water system, and sterilization point is often selected in water-in and water outlet.General partly sterilised's mode has disinfection by ultraviolet light and local thermal sterilization.Partly sterilised can only kill the bacterium in the subrange of point of fixity position, and to attached biological film and the tubing system of legionella severe contamination, sterilization effect is not obvious.Systems Sterilizer can add the sterilizing agent of a certain amount of antibacterial or sterilizing in the entire system, sterilizing agent fully and uniformly distributes by water distribution system, make sterilizing agent reach pipe network end and slough, motionless region can be stagnated to whole pipe network and pipe network end and current, carry out pasteurised completely.
The legionella disinfection technology that recent domestic often adopts mainly contains physical method and chemical process etc., comprises thermal shocking method, thermal sterilization method, ultra-violet sterilization method, nano titanium oxide (TiO2) photocatalysis technology, ozonization, chlorine disinfectant, copper and silver ions compounding disinfection etc.Copper and silver ions compounding disinfection technology with the immediate technical scheme of the utility model.
The place of thermal shocking method deficiency is that its sterilising effect can not continue, and biology likely brings back to life, and also has the danger of scalding people and pipeline scale; Ultraviolet, nano titanium oxide (TiO2) photochemical catalysis, ozone all do not have continuous action, effectively cannot prevent the regeneration of legionella, and pipeline in generate microbial film and incrustation scale ultraviolet usefulness also can be made significantly to decline; Chlorine disinfectant has corrodibility, use the perishable pipeline of chlorine-containing agent, produce disinfection byproduct (DBP), and its concentration for the treatment of is not suitable for domestic hot-water yet; Copper and silver ions compounding disinfection ionization device were closed after 6 ~ 12 weeks, there will be the reproductive patterns again of legionella pneumophilia in waterworks, and must routine cleaning electrode to remove the incrustation scale deposited.
The mode of usual generation silver ions has ul-trasonic irradiation to discharge ion and the large class of electrolysis release ion two.Ul-trasonic irradiation release ionic means is connected with ion generator owing to utilizing ultrasonic wave generator, causes the overall volume of equipment excessive, is unfavorable for general installation or operation.Electrolysis release ion method controls ion release generally by two class modes: control Faradaic current or electrolysis time.Existing method all can only judge electrolytic silver ion burst size faintly, and on the one hand, the water quality after disinfecting is unstable, and on the other hand, silver in drinking water ion content fluctuation range is large, there is the potential safety hazard that concentration of silver ions exceedes health standards limit value.
Utility model content
The purpose of this utility model is the following technical problem for solving the sterilizing unit being applied to the sterilization of domestic hot-water's legionella at present:
1. traditional thermal shocking method sterilising effect can not continue, and biology likely brings back to life, and also has the danger of scalding people and pipeline scale; Ultraviolet, nano titanium oxide (TiO2) photochemical catalysis, ozonization all do not have continuous action, effectively cannot prevent the regeneration of legionella, and pipeline in generate microbial film and incrustation scale ultraviolet usefulness also can be made significantly to decline; Chlorine disinfectant has corrodibility, use the perishable pipeline of chlorine-containing agent, produce disinfection byproduct (DBP), and its concentration for the treatment of is not suitable for domestic hot-water yet; Copper and silver ions compounding disinfection ionization device were closed after 6 ~ 12 weeks, there will be the reproductive patterns again of legionella pneumophilia in waterworks, and must routine cleaning electrode to remove the incrustation scale deposited;
2. the electrolytic silver ion burst size of existing silver ions sterilizing unit can not accurately control, and cause the water quality after disinfecting unstable, silver in drinking water ion content fluctuation range is large, and concentration of silver ions easily exceedes health standards limit value.
In order to solve the problems of the technologies described above, the utility model provides a kind of silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella, comprises silver ions generating unit and connected electrolytic silver ion burst size pilot circuit;
Described silver ions generating unit comprises housing, and the two side of housing is arranged with the flange of docking waterworks water circulating pump pipeline, enclosure interior roof is provided with a pair silver electrode;
Described electrolytic silver ion burst size pilot circuit comprises power supply, central control circuit, constant-current control circuit and electrode control circuit, power supply is central control circuit, constant-current control circuit and electrode control circuit are powered, the pwm pulse signal output terminal of central control circuit is connected to the synchronous signal input end of constant-current control circuit, the pwm pulse signal output terminal of constant-current control circuit is connected to the pwm pulse signal input terminus of electrode control circuit through diode, the direction input terminus of electrode control circuit is connected to central control circuit, two DC voltage output ends of electrode control circuit are connected respectively to two outside silver electrodes, the temperature alarming output terminal of electrode control circuit is connected to the error amplifier inverting input of constant-current control circuit,
Described silver electrode is connected to described silver ions burst size pilot circuit by cable.
Further, described case top is provided with silver electrode cable connection platform.
Further, described cable connection platform periphery is covered with waterproof wiring platform box.
Further, described housing is provided with purging valve.
Further, described central control circuit comprises micro-chip.
Further, the output voltage of described electrode control circuit is 24V, and outward current is 300mA.
Further, described power supply front end is connected with safety protective circuit, and safety protective circuit is formed by connecting in turn by isolating transformer, earth leakage circuit-breaker, fusible cut-out, time switch and water pump interlock switch.
The silver ions sterilizing unit that the utility model is applied to the sterilization of domestic hot-water's legionella has the following advantages:
1) legionella in hot-water system can be killed at short notice, and there is continuous action, effectively prevent the regeneration of legionella;
2) biomembranous in pipeline growing effectively is suppressed;
3) can set the silver ions sterilizing unit working hour, the object of automatic intermittent work can be reached;
4) silver ions sterilizing unit and water pump linkage work, be fused in hot water pipe network system by silver ions with uniform fluid flow, avoids the mixing inequality directly adding silver ion solution and cause;
5) control down pole by electrical control cubicles, prevent fouling on the impact of silver ion generator;
6) silver ions sterilizing unit volume is very little, directly can install in tubing system, eliminates and need arrange separately machine room and other harsh external environment conditions;
7) silver ions sterilizing unit all can be suitable for for hot-water system that is newly-built, transformation, particularly for legionella in existing system, pipeline biomembranous kill with restraining effect remarkable.
The pwm pulse signal source forcing constant-current control circuit that the dutycycle that electrolytic silver ion burst size pilot circuit described in the utility model is produced by SCM Based central control circuit is adjustable, constant-current control circuit inside is made to set up constant pressure source and constant current source, the constant electrical signal supply electrode control circuit that constant-current control circuit exports, make the DC voltage output end voltage constant connecting two silver electrodes in electrode control circuit, then by the constant current hold of silver electrode, the quantity of silver electrode unit time Inner electrolysis release silver ions is made to keep stable.In addition, the polarity auto-changing of two silver electrodes can be realized by the direction input terminus in central control circuit control electrode pilot circuit, the incrustation such as the calcium layer can effectively clearing electrode adhered to raising two silver electrodes consume balanced while.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model structured flowchart;
Fig. 2 is silver ions generating unit structure front view;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is electrolytic silver ion burst size pilot circuit functional block diagram;
Fig. 5 is electrolytic silver ion burst size pilot circuit power supply safety protection circuit functional block diagram;
Fig. 6 is electrolytic silver ion burst size pilot circuit electrical schematic diagram.
In figure: 1. silver ions generating unit; 101. cable connection platforms; 102. cable connection platform boxes; 103. silver electrode; 104. housing; The flange of 105. water circulating pump pipelines; 106. purging valve; 2. electrolytic silver ion burst size pilot circuit; 3. water circulating pump; 4. interchanger; 5. waterworks pipeline.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model, and it should not be construed as restriction of the present utility model.
As Figure 1-3, the silver ions sterilizing unit of the domestic hot-water's of being applied to legionella sterilization described in the utility model comprises silver ions generating unit 1 and connected silver ions burst size pilot circuit 2, silver ions generating unit 1 comprises housing 104, the two side of housing 104 is arranged with the flange 105 of docking waterworks water circulating pump pipeline, housing 104 inner top wall is provided with a pair silver electrode 103, the cable connection platform 101 that silver electrode 103 is arranged by housing 104 top is connected to silver ions burst size pilot circuit 2 with cable, cable connection platform 101 is entered for preventing water droplet, waterproof wiring platform box 102 is covered with in cable connection platform 101 periphery, for ensureing that silver electrode 103 is immersed in water completely, housing 104 is provided with purging valve 106, for in automatic-discharging housing 104 due in the gas of electrolytic action accumulation or tubing system due to gas that water pressure fluctuations enters.
As shown in figs. 4 and 6, electrolytic silver ion burst size pilot circuit 2 comprises power supply, central control circuit, constant-current control circuit and electrode control circuit, central control circuit comprises micro-chip PIC16F873A, constant-current control circuit comprises switching power source chip SG3525AN (16), and electrode control circuit comprises H bridge driving chip LMD18200.Power supply produces two-way+5V and two-way+12V power supply respectively after being converted by alternating current 220V, one tunnel+5V is connected to the power pins VDD of micro-chip PIC16F873A, the in-phase input end IN+ of SG3525AN (16) medial error amplifier is connected to after another road+5V series connection potentiometer R2, one tunnel+12V is connected to the power pins VI of SG3525AN (16), and another road+12V is connected to the power pins V+ of LMD18200.The pin RC2/CCP1 of micro-chip PIC16F873A is connected to the synchronizing signal input pin of switching power source chip SG3525AN (16)
two output terminal OUTA and OUTB of SG3525AN (16) unite two into one after series diode D10 and D11 respectively and are connected to the PWM pin of LMD18200, the H bridge drive output OUT1 of LMD18200 and OUT2 is connected respectively to two outside silver electrodes by junctor CON, and (one is anode, another root is negative electrode), temperature alarming output terminal the 9th pin of LMD18200 is connected to the inverting input IN-of SG3525AN (16) medial error amplifier, and the direction input terminus DIR of LMD18200 is connected to an I/O port RB4 of PIC16F873A.
The pin RC2/CCP1 of PIC16F873A is operated in PWM(width modulation) pattern, output resolution ratio is the pwm pulse signal of 10, and the register by its inside of programming regulates cycle and the dutycycle of pwm pulse signal.After the power pins VI of SG3525AN (16) sets up the normal working voltage of 12V, constant pressure source and constant current source are set up in its inside namely, under the pwm pulse signal from PIC16F873A encourages, its output cycle and the adjustable pwm pulse signal of dutycycle also supply the PWM input terminus of LMD18200, then LMD18200 also exports cycle and the adjustable pwm pulse signal of dutycycle, its continuous output current can reach 300mA, output voltage can reach 24V, start silver electrode when pwm pulse signal is high level and carry out electrolysis release silver ions, work 6min concentration of silver ions can reach 0.05mg/L.
The direction input terminus DIR of LMD18200 periodically converts DC voltage output end under the periodicity level signal that the RB4 port of micro-chip PIC16F873A exports controls thereupon, the i.e. positive-negative polarity of H bridge drive output OUT1 and OUT2, make two silver electrodes also carry out negative and positive conversion thereupon, can prevent anodic-cathodic imbalance from consuming like this, and attached dirty layer such as the calcium layer etc. of silver electrode surface can be made effectively to be removed, ensure the normal release of silver ions.When the consumption of silver electrode exceedes early warning range, given the alarm by guard signal, remind relating operation personnel to change silver electrode.
As shown in Figure 2, for ensureing the security of Power supply, set up safety protective circuit in power supply front end, safety protective circuit is formed by connecting in turn by isolating transformer, earth leakage circuit-breaker, fusible cut-out, time switch and water pump interlock switch.
Electrolytic silver ion burst size control method is according to electrolytic silver ion concentration calculation formula
, when electrolysis water yield V and Faradaic current I is constant, regulate electrolytic silver ion concentration C Ag by controlling Faradaic current duration T
+; When electrolysis water yield V dynamic change, electrolysis water yield V is recorded in real time by under meter, dynamic adjustments Faradaic current I, makes the ratio of Faradaic current I and electrolysis water yield V keep constant, then regulates electrolytic silver ion concentration C Ag by controlling Faradaic current duration T
+, make electrolytic silver ion concentration C Ag
+kept stable in the limits of health standards 0.05mg/L, disinfection effect is good, reliability and security are all higher.The burst size of silver electrode silver ions is also automatically regulated by detecting water quality situation, increase feedback control circuit, according to silver ions burst size, concentration of silver ions situation is fed back to central control circuit by electrical signal, sends by central control circuit the change that pulse realizes constant-current control circuit and electrode control circuit working order.Central control circuit switches the level state of the direction input terminus of electrode control circuit with certain cycle t, the polarity of two DC voltage output ends of electrode control circuit is changed with cycle t, two silver electrodes being then connected respectively to electrode control circuit two DC voltage output ends, with cycle t reverse, make two silver electrode equilibriums consume and clearing electrode incrustation.
As shown in Figure 1, during work, silver ions generating unit 1 is connected by waterworks pipeline 5 is adjacent with water circulating pump 3, and water circulating pump 3 is adjacent with interchanger 4 to be connected.Cold water enters waterworks pipeline 5 between water circulating pump 3 and interchanger 4, and interchanger 4 heats the cold water that outside enters, and the hot water after heating circulates under the driving of water circulating pump 3 in waterworks pipeline 5.Start this silver ions sterilizing unit, the silver ions that electrolysis produces can be killed the legionella in hot water and disinfect.
Silver ions disinfection technology produces silver ions by the method for electrolysis, and silver ions and microorganism association reaction, make microorganism lose activity, and reaches the effect of inactivating microbial.First silver ions can be adsorbed on the surface of cell walls, the part physiological function of cell is destroyed by silver ions, wait the silver ions assembled reach a certain amount of after, namely penetration cell wall enters cell interior, and be detained on endochylema film, now silver ions plays the effect suppressing enzymic activity in film, causes the death of the microorganisms such as bacterium.Secondly microorganism and silver ions contact reacts, can make microorganism structure be destroyed or produce dysfunction.When micro silver ion arrives microorganism cells film, because the latter is electronegative, silver ions is positively charged, relies on coulombic force effect to make both firmly absorption.Silver ions penetration cell wall enters in cell, intracellular protein is solidified, thus the activity of the enzyme such as decomposable asymmetric choice net glucose, sucrose, urea in destruction cell paste, its carboxyl (-COOH) of chief destructive and sulfhedryl (-SH) and make bacterial death.Silver includes the avidity of-SH enzyme comparatively by force to microbe in addition, can form with it irreversible sulphur silver compound, fetter-SH enzyme, disturb the respiration of microorganism, cause microbial death.Research also finds, protogonocyte (gymnocyte) is the same with complete cell can combine with silver ions soon, silver ions penetrates and makes protoplasma shrink aggegation with protoplasma effect in protogonocyte to deviate from, thus makes protogonocyte will be more hurry up than there being the cell of wall to die an death.Experimental study shows that silver ions sterilization mechanism is mainly manifested in three aspects: to the synthesis of microbe endoenzyme and amino acid whose effect, the barrier structure of destroy microorganisms and the DNA molecular of destroy microorganisms.
Silver ions sterilizing unit does not need long-time continuous to start shooting, and in hypothesis set, circulation hot-water system calculated by 3h working hour every day, and silver ions sterilizing unit can shut down after work 3h, and precipitation silver ions is even with water circulation in the recycle system.According to market survey silver valency 6.83 yuan/g, silver ions consumption (unit/year)=0.004 × I × 3 × 365 × 6.83.
As shown in Table 1, silver ions sterilizing unit can run in short-term, and reduce silver ions consumption, running cost is cheap.If by 5 m
3mini system 0.05mg/L silver ions, every day runs 3h, and the consumption costs of silver ions is 1.7 yuan/d, 20 m
3the consuming cost of system silver ions average every day be 6.8 yuan.Visible, silver ions is as sterilizing agent compared with other sterilization methods, and this application of installation is simple and convenient, has the advantage that working cost is low and sterilizing efficiency is high, and equipment occupation of land space is little, easy for installation, is particularly applicable to concentrated hot water cyclesystem; Housing 104 adopts stainless material or chlorinated polyvinyl chloride resin (CPVC) to make, and nominal pressure 1.6MPa, can be applicable to larger hot-water system.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (8)
1. be applied to a silver ions sterilizing unit for domestic hot-water's legionella sterilization, it is characterized in that, comprise silver ions generating unit and connected electrolytic silver ion burst size pilot circuit;
Described silver ions generating unit comprises housing, and the two side of housing is arranged with the flange of docking waterworks water circulating pump pipeline, enclosure interior roof is provided with a pair silver electrode;
Described electrolytic silver ion burst size pilot circuit comprises power supply, central control circuit, constant-current control circuit and electrode control circuit, power supply is central control circuit, constant-current control circuit and electrode control circuit are powered, the pwm pulse signal output terminal of central control circuit is connected to the synchronous signal input end of constant-current control circuit, the pwm pulse signal output terminal of constant-current control circuit is connected to the pwm pulse signal input terminus of electrode control circuit through diode, the direction input terminus of electrode control circuit is connected to central control circuit, two DC voltage output ends of electrode control circuit are connected respectively to two outside silver electrodes, the temperature alarming output terminal of electrode control circuit is connected to the error amplifier inverting input of constant-current control circuit,
Described silver electrode is connected to described silver ions burst size pilot circuit by cable.
2. the silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella according to claim 1, it is characterized in that, described case top is provided with silver electrode cable connection platform.
3. the silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella according to claim 2, it is characterized in that, described cable connection platform periphery is covered with waterproof wiring platform box.
4. the silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella according to any one of claim 1-3, it is characterized in that, described housing is provided with purging valve.
5. the silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella according to claim 1, it is characterized in that, described central control circuit comprises micro-chip.
6. the silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella according to claim 1, it is characterized in that, the output voltage of described electrode control circuit is 24V, and outward current is 300mA.
7. the silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella according to claim 1-3 or any one of 5-6; it is characterized in that; described power supply front end is connected with safety protective circuit, and safety protective circuit is formed by connecting in turn by isolating transformer, earth leakage circuit-breaker, fusible cut-out, time switch and water pump interlock switch.
8. the silver ions sterilizing unit being applied to the sterilization of domestic hot-water's legionella according to claim 4; it is characterized in that; described power supply front end is connected with safety protective circuit, and safety protective circuit is formed by connecting in turn by isolating transformer, earth leakage circuit-breaker, fusible cut-out, time switch and water pump interlock switch.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152279A (en) * | 2015-10-26 | 2015-12-16 | 上海渊泉集币收藏品有限公司 | Water flow sterilizing and disinfecting device and method by means of electrolytic silver ions |
| CN106859570A (en) * | 2017-01-22 | 2017-06-20 | 无锡小天鹅股份有限公司 | Shoe washing machine |
| CN108002496A (en) * | 2017-12-29 | 2018-05-08 | 北京工业大学 | A kind of disinfectant preparation facilities and dosing control system for being used to build domestic hot-water |
| CN108203199A (en) * | 2018-02-11 | 2018-06-26 | 上海通华不锈钢压力容器工程有限公司 | A kind of sterilization method of silver ion sterilizer and corresponding water system |
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2015
- 2015-05-18 CN CN201520052285.3U patent/CN204550127U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152279A (en) * | 2015-10-26 | 2015-12-16 | 上海渊泉集币收藏品有限公司 | Water flow sterilizing and disinfecting device and method by means of electrolytic silver ions |
| CN106859570A (en) * | 2017-01-22 | 2017-06-20 | 无锡小天鹅股份有限公司 | Shoe washing machine |
| CN108002496A (en) * | 2017-12-29 | 2018-05-08 | 北京工业大学 | A kind of disinfectant preparation facilities and dosing control system for being used to build domestic hot-water |
| CN108002496B (en) * | 2017-12-29 | 2023-09-19 | 北京工业大学 | Disinfectant preparation device for building domestic hot water and dosing control system |
| CN108203199A (en) * | 2018-02-11 | 2018-06-26 | 上海通华不锈钢压力容器工程有限公司 | A kind of sterilization method of silver ion sterilizer and corresponding water system |
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Address after: 100044, No. 19 Che Zhuang Street, Beijing, Xicheng District Patentee after: China Architectural Design & Research Institute Co Ltd Address before: 100044 National Housing Engineering Center, 19 Che Kung Chuang street, Xicheng District, Beijing. Patentee before: CHINA ARCHITECTURE DESIGN INSTITUTE CO., LTD. |