CN104986845A - Slaked lime feeding system in water processing system - Google Patents
Slaked lime feeding system in water processing system Download PDFInfo
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- CN104986845A CN104986845A CN201510387129.7A CN201510387129A CN104986845A CN 104986845 A CN104986845 A CN 104986845A CN 201510387129 A CN201510387129 A CN 201510387129A CN 104986845 A CN104986845 A CN 104986845A
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Abstract
The invention provides a slaked lime feeding system in a water processing system. The slaked lime feeding system comprises a lime powder bin. An outlet of the lower end of the lime powder bin is provided with a feeding machine. The feeding machine is connected with a metering conveying machine. The metering conveying machine is connected with a feeder though a pipeline made of transparent materials. The feeder is connected with a lime milk solution. The lime milk solution tank is provided with an automatic sand draining valve and communicated with a lime milk feeding water tank through a lime milk chemical feeding pipe. According to the slaked lime feeding system, through the pipeline made of the transparent materials, the whole process of material conveying and flowing can be observed, and dredging can be conducted conveniently and timely once blocking is found; due to the fact that the automatic sand draining valve is arranged, automatic sand draining can be conducted regularly; the labor intensity of workers is lowered, deposition and blocking caused by sand grains are reduced, the concentration of a lime agent prepared through a limb chemical feeding device keeps stable, the error does not exceed +/-0.5%, precise control over the PH value of feeding points can be guaranteed, and the error does not exceed +/-0.3.
Description
Technical field
The invention belongs to water-treatment technology field, be specifically related to white lime dosing system in a kind of water treatment system.
Background technology
White lime (formal name used at school calcium hydroxide, chemical formula Ca (OH)
2) be medicament conventional in water treatment system, be widely used in the process field such as industrial water supply, municipal middle water and all kinds of waste water, and in the technique such as recycled water advanced treatment, desalination pre-treatment, desulfurization wastewater process.Add in the water treatment system of white lime, the quality of outlet effect depends on that milk of lime adds the continuous running condition that rear pH controls levels of precision and lime medicine machine.
Traditional dry method lime medicine system generally adopts star-shaped feeding machine, by the mode of mechanical vibrator and helical feed, lime powder is delivered to lime milk solution case.Because a large amount of steam produced in milk of lime process for preparation rise bottom feeding machine to powder storehouse, blanking pipe is easily blocked, causes lime error in dipping large; In mechanical vibrator process, noise is very large, and flying dust is serious, work under bad environment.In addition, existing milk of lime dosing method adopts Pulp pump to add directly in pond mostly, and lime metering is only with to carry out discharge chain, and cause pH to feed back delayed, adjustment not in time.When adding, pH fluctuation range is large, controls out of true; Drug feeding pipeline adopts Hard link, and lack pipe flushing system, line clogging frequency is high.
For the dosing of water treatment system, need to develop a kind of novel lime medicine system.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide white lime dosing system in a kind of water treatment system, adopt this system can improve reliability and the precision of lime metering and pH control, reduce drug feeding pipeline blocking frequency, to the security improving whole water treatment system.
For achieving the above object, the present invention adopts following technical scheme:
White lime dosing system in a kind of water treatment system, comprise lime powder bin, the exit, lower end of lime powder bin is provided with feeding machine, feeding machine is connected with metering conveyor, metering conveyor is connected with supply device through the pipeline of transparent material, supply device is connected with lime milk solution case, lime milk solution case is provided with automatic sand draining valve, and lime milk solution case adds pond through lime milk dosing pipe and milk of lime and is connected.
Described lime powder bin is provided with sack cleaner and level gage.
Described pipeline is provided with anti-blocking detector.
Described lime milk solution case is also provided with stirrer and fluid level transmitter.
Described milk of lime recycle pump is Pulp pump.
Described lime milk dosing pipe is provided with Pneumatic adjusting ball valve.
Pneumatic adjusting ball valve is that pneumatic ceramic regulates ball valve.
Described metering conveyor is the metering conveyor of spiral.
Described milk of lime adds in pond and is provided with pH meter.
Described lime milk solution case is also connected with lime milk dosing pipe by milk of lime return line; Lime milk solution case is 2.
Compared with prior art, the beneficial effect that the present invention has: owing to adopting the pipeline of transparent material in the present invention, so whole process can observe mass transport and mobility status, once find blocking, can dredge convenient process in time.Owing to arranging automatic sand draining valve, can timing automatic sediment outflow; The alluvial blockage problem decreasing labor strength and cause because of sand grains, and the lime drug concentration of lime chemicals dosing plant preparation keeps stable, error is no more than ± 0.5%, can ensure that toss area pH value controls accurately, and error is no more than ± and 0.3.
Further, the feeding machine of lime blanking system is broken arch scraping blade feeding machine, adopts flexible blades broken arch, blanking stable and uniform.Owing to not needing mechanical vibrator broken arch, avoid vibrating noise and flying dust problem.
Further, the automatic gauge that can be realized lime powder by the metering conveyor of spiral and follow-up supply device is fed intake, and metering accurately, makes the mass concentration stable maintenance of milk of lime in 0.5%.
Further, pneumatic adjustment ball adopts Wear-resistant ceramic ball valve, and the tolerance range of valve opening, not by the impact of milk of lime particle, ensure that the stability that milk of lime adds, and extends the work-ing life of relevant device.
Further, by adopting transparent pipeline, milk of lime high-flow backflow and pipeline auto-flushing mode, inner wall smooth, resistance is little, and lime is not easy deposition, and Flow of Goods and Materials situation is convenient to observe and safeguard.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is settling pond mixing zone pH value detected result figure.
In figure, 1-lime powder bin; 2-sack cleaner; 3-level gage; 4-broken arch scraping blade feeding machine; 5-metering conveyor; The anti-blocking detector of 6-; 7-pipeline; 8-supply device; 9-stirrer; 10-lime milk solution case; 11-fluid level transmitter; 12-automatic sand draining valve; 13-milk of lime recycle pump; 14-Pneumatic adjusting ball valve; 15-pH counts, and 16-milk of lime adds pond.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1, white lime dosing system in water treatment system of the present invention, comprise lime powder bin 1, lime powder bin 1 is provided with sack cleaner 2 and level gage 3, the exit, lower end of lime powder bin 1 is provided with feeding machine 4, feeding machine 4 is connected with metering conveyor 5, metering conveyor 5 is connected with supply device 8 through the pipeline 7 of transparent PU material, and pipeline 7 is provided with anti-blocking detector 6, supply device 8 is connected with lime milk solution case 10, lime milk solution case 10 is provided with stirrer 9, fluid level transmitter 11 and automatic sand draining valve 12, lime milk solution case 10 adds pond through lime milk dosing pipe and milk of lime and is connected, milk of lime adds in pond and is provided with pH meter 15, lime milk dosing pipe is provided with Pneumatic adjusting ball valve 14, and Pneumatic adjusting ball valve 14 is pneumatic ceramic adjustment ball valve, there is wear-resisting feature, the tolerance range of valve opening is not by the impact of milk of lime particle, ensure that the stability that milk of lime adds, and extend the work-ing life of relevant device.
Described feeding machine 4 is broken arch scraping blade feeding machine, and milk of lime recycle pump 13 adopts Pulp pump.
Milk of lime dosage is controlled by the aperture adjusting Pneumatic adjusting ball valve 14.Pneumatic adjusting ball valve 14 is located at milk of lime toss area, ensure that the promptness of signal feedback.In Lime-Injecting pond, pH meter 15 and the chain PID that is of Pneumatic adjusting ball valve 14 aperture regulate, valve opening with carry out pH in discharge and pond and do double PID adjustment, pH value can control set(ting)value ± 0.3 scope, make Lime-Injecting precisely, reliable, what ensure that lime adds effect.
In the present invention, lime blanking system adopts flexible blades broken arch, makes blanking stable and uniform.Owing to not needing mechanical vibrator broken arch, avoid vibrating noise and flying dust problem.The automatic gauge that can be realized lime powder by the metering conveyor of spiral and follow-up supply device is fed intake, and accurately, the mass concentration stable maintenance of milk of lime is in 0.5% in metering.Added by caliber and the larger supply device broken line of spiral and avoid steam and to rise the problem that the lime in powder storehouse and feeder channel is got damp.Lime blanking uses transparent flexible pipe, is convenient to observe lime blanking process situation.Lower of general stopping state need beat flexible tube, easy access and maintenance.Lime milk solution case arranges automatic sand draining valve, timing automatic sediment outflow; The alluvial blockage problem decreasing labor strength and cause because of sand grains.By adopting PU transparent pipeline, milk of lime high-flow backflow and pipeline auto-flushing mode, inner wall smooth, resistance is little, and lime is not easy deposition, and Flow of Goods and Materials situation is convenient to observe and safeguard.The present invention adopts two cover lime chemicals dosing plant alternate runs, during a set of preparing lime milk, another set ofly to put into operation; In two milk of lime liquor boxs, stirrer remains running condition, achieves adding continuously of milk of lime.Milk of lime dosage is controlled by the aperture adjusting Pneumatic adjusting ball valve.Pneumatic adjusting ball valve is located at milk of lime toss area, ensure that the promptness of signal feedback.In Lime-Injecting pond, pH meter and the chain PID that is of Pneumatic adjusting ball valve aperture regulate, valve opening with carry out pH in discharge and pond and do double PID adjustment, pH value can control set(ting)value ± 0.3 scope, make Lime-Injecting precisely, reliable, what ensure that lime adds effect.Pneumatic adjusting ball valve adopts Wear-resistant ceramic ball valve, and the tolerance range of valve opening, not by the impact of milk of lime particle, ensure that the stability that milk of lime adds, and extends the work-ing life of relevant device.
Inaccurate, the dosage of conventional lime medicine system noise, flying dust and lime metering can be efficiently solved by this system to control out of true and steam and to get damp problems such as causing line clogging, and the lime drug concentration of lime chemicals dosing plant preparation keeps stable, error is no more than ± and 0.5%.In addition, toss area pH value controls accurately, and error is no more than ± 0.3, by the pipeline of transparent material, can whole process observation mass transport and mobility status, and once find blocking, convenient process can be dredged in time.
Be described below by a specific embodiment.
Certain power plant's white lime breast dosing system design data is as follows:
Designed water 2 × 1200m
3/ h; Design toss area pH value controls 10.30, and milk of lime preparation mass concentration is 5%, and make up a prescription service water used;
Adopt a kind of novel milk of lime dosing system, type selection is as follows:
Lime powder bin volume V=80m
3, metering conveyor Q=1000kg/h, milk of lime pump flow Q=15m
3/ h, lift H=25m.Lime milk solution case useful volume V=15m
3, lime milk solution case is provided with stirrer, fluid level transmitter and automatic sand draining valve 12 etc.
During milk of lime configuration, first open the water inlet automatic valve on lime milk solution case 10, simultaneously the broken arch scraping blade feeding machine of lime powder bin 1, metering conveyor 5, supply device 8 are started working.When the lime powder carried reaches the concentration preparing milk of lime, close broken arch scraping blade feeding machine, metering conveyor 5, supply device 8; When water level reach lime milk solution case 10 specify high-order time, close water inlet automatic valve.Milk of lime preparation work completes.Stirrer 9 on this process lime milk solution case is in work always.
Milk of lime recycle pump 13 adopts Pulp pump, 2 milk of lime recycle pump alternate runs.When a milk of lime liquor box reaches low liquid level, this supporting milk of lime recycle pump is stopped transport, and supporting Lime-Injecting system blanking starts to prepare milk of lime, and an other milk of lime recycle pump starts.Cycle alternation like this.
Lime milk dosing adopts the flow decupling chemical feeding points dosage at lime milk solution case internal recycle, and arranges flushing of pipeline, blocks to prevent the deposition in lime pipeline.The dosage of milk of lime is controlled by the aperture of Pneumatic adjusting ball valve 14, Pneumatic adjusting ball valve is located at the promptness that ensure that signal feedback near toss area, the wear-resistant stability maintaining milk of lime and add of Pneumatic adjusting ball valve, in Lime-Injecting pond, pH meter 15 and pneumatic ceramic regulate the chain PID that is of ball valve to regulate.
Adopt this novel lime medicine system and addition method, setup control settling pond mixing zone pH value is 10.3, and settling pond mixing zone pH value detected result is shown in Fig. 2.
As can be seen from Figure 2, toss area pH value controls accurately, and error is no more than ± and 0.3.
Claims (10)
1. white lime dosing system in a water treatment system, it is characterized in that, comprise lime powder bin (1), the exit, lower end of lime powder bin (1) is provided with feeding machine (4), feeding machine (4) is connected with metering conveyor (5), metering conveyor (5) is connected with supply device (8) through the pipeline (7) of transparent material, supply device (8) is connected with lime milk solution case (10), lime milk solution case (10) is provided with automatic sand draining valve (12), lime milk solution case (10) adds pond (16) through lime milk dosing pipe and milk of lime and is connected.
2. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, described lime powder bin (1) is provided with sack cleaner (2) and level gage (3).
3. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, described pipeline (7) is provided with anti-blocking detector (6).
4. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, described lime milk solution case (10) is also provided with stirrer (9) and fluid level transmitter (11).
5. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, described milk of lime recycle pump (13) is Pulp pump.
6. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, described lime milk dosing pipe is provided with Pneumatic adjusting ball valve (14).
7. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, Pneumatic adjusting ball valve (14) is pneumatic ceramic adjustment ball valve.
8. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, the metering conveyor that described metering conveyor (5) is spiral.
9. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, described milk of lime adds in pond (16) and is provided with pH meter (15).
10. white lime dosing system in a kind of water treatment system according to claim 1, is characterized in that, described lime milk solution case (10) is also connected with lime milk dosing pipe by milk of lime return line; Lime milk solution case (10) is 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510387129.7A CN104986845B (en) | 2015-07-03 | 2015-07-03 | White lime dosing system in a kind of water treatment system |
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| CN201510387129.7A CN104986845B (en) | 2015-07-03 | 2015-07-03 | White lime dosing system in a kind of water treatment system |
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| CN104986845B CN104986845B (en) | 2017-09-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140023A (en) * | 2016-08-30 | 2016-11-23 | 宜兴市中发水处理环保设备有限公司 | A kind of lime throwing device |
| CN108275380A (en) * | 2018-03-15 | 2018-07-13 | 西安西热水务环保有限公司 | A kind of block-resistant type disturbance formula granular material metering and conveying device |
| CN113385070A (en) * | 2021-04-21 | 2021-09-14 | 铜陵有色金属集团股份有限公司 | Double-system lime emulsification workshop for emulsion production and working method thereof |
| CN114082313A (en) * | 2021-12-08 | 2022-02-25 | 碟石环保设备河北有限公司 | PAM liquid medicine preparation method and control system |
| CN114682128A (en) * | 2022-04-28 | 2022-07-01 | 华能陇东能源有限责任公司 | Automatic liquid preparation of dense medium granule and dosing system |
| CN114956284A (en) * | 2022-05-26 | 2022-08-30 | 华能陇东能源有限责任公司 | Double-fed adjustment-based heavy medium powder dry method automatic adding system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201148384Y (en) * | 2008-01-18 | 2008-11-12 | 上海德源水处理工程有限公司 | Powdery lime automatic metering and preparing apparatus |
| CN202284157U (en) * | 2011-10-08 | 2012-06-27 | 北京中电加美环境工程技术有限责任公司 | Wet process metering system for lime powder |
| CN204778995U (en) * | 2015-07-03 | 2015-11-18 | 西安西热水务环保有限公司 | White lime is thrown with system among water processing system |
-
2015
- 2015-07-03 CN CN201510387129.7A patent/CN104986845B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201148384Y (en) * | 2008-01-18 | 2008-11-12 | 上海德源水处理工程有限公司 | Powdery lime automatic metering and preparing apparatus |
| CN202284157U (en) * | 2011-10-08 | 2012-06-27 | 北京中电加美环境工程技术有限责任公司 | Wet process metering system for lime powder |
| CN204778995U (en) * | 2015-07-03 | 2015-11-18 | 西安西热水务环保有限公司 | White lime is thrown with system among water processing system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140023A (en) * | 2016-08-30 | 2016-11-23 | 宜兴市中发水处理环保设备有限公司 | A kind of lime throwing device |
| CN108275380A (en) * | 2018-03-15 | 2018-07-13 | 西安西热水务环保有限公司 | A kind of block-resistant type disturbance formula granular material metering and conveying device |
| CN113385070A (en) * | 2021-04-21 | 2021-09-14 | 铜陵有色金属集团股份有限公司 | Double-system lime emulsification workshop for emulsion production and working method thereof |
| CN114082313A (en) * | 2021-12-08 | 2022-02-25 | 碟石环保设备河北有限公司 | PAM liquid medicine preparation method and control system |
| CN114682128A (en) * | 2022-04-28 | 2022-07-01 | 华能陇东能源有限责任公司 | Automatic liquid preparation of dense medium granule and dosing system |
| CN114956284A (en) * | 2022-05-26 | 2022-08-30 | 华能陇东能源有限责任公司 | Double-fed adjustment-based heavy medium powder dry method automatic adding system and method |
| CN114956284B (en) * | 2022-05-26 | 2023-11-14 | 华能陇东能源有限责任公司 | Automatic dry-method heavy medium powder feeding system and method based on double-fed adjustment |
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| CN104986845B (en) | 2017-09-12 |
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