CN102101714B - Device and method for quantitatively charging lime automatically - Google Patents
Device and method for quantitatively charging lime automatically Download PDFInfo
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- CN102101714B CN102101714B CN2010105913408A CN201010591340A CN102101714B CN 102101714 B CN102101714 B CN 102101714B CN 2010105913408 A CN2010105913408 A CN 2010105913408A CN 201010591340 A CN201010591340 A CN 201010591340A CN 102101714 B CN102101714 B CN 102101714B
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Abstract
The invention relates to a device and method for quantitatively charging lime automatically, belonging to the technical field of wastewater treatment. The device comprises a lime storage bin, a blanking machine, a feeding machine, a lime milk preparing tank, a preparing pump, a batching pool, a batching pump and a neutralizing pool. The method comprises the following steps of: pumping lime which is in bulk in a tanker into the lime storage bin; quantitatively conveying the lime in the lime storage bin to the lime milk preparing tank for digesting by the blanking machine and the feeding machine in sequence; inputting acid wastewater into the lime milk preparation tank; quantitatively pumping the digested lime milk into the batching pool by using the preparation pump; and quantitatively charging the processed lime milk into the neutralizing pool for carrying out acid-base neutralization by using the batching pump. The invention has the advantages of full-closed design, high automatic level, low labor intensity, accurate lime charging amount and stable running.
Description
Technical field
The present invention relates to the device and method that a kind of automatic ration adds lime, belong to technical field of waste water processing.
Background technology
Usually adopt the method that adds caustic soda or lime, improve the pH value of waste water, the neutralizing acid wastewater; Yet; Caustic soda has severe corrosive as a kind of highly basic, and (handle the waste water expense for lime method 4 times) not only costs an arm and a leg; And needing especially careful of operator, this has brought certain hidden danger to production safety.Not only cost is low, to regulate the pH value effective for lime method, and lime itself also is a kind of good coagulant aids, and effectively the impurity in the sedimentation waste water plays certain purification of water quality effect.
Tradition lime dosing method is main with manpower, the semi-automatic equipment of the employing of part, and deficiencies such as this method has that dust pollution is serious, measure control out of true, labor strength are big, work under bad environment, shortcoming is:
The first, early stage lime addition method is in the dosing pond, to prepare certain density lime slurry by manual work earlier, utilizes impeller pump to pump to then and adds a little.Through observing spinner-type flowmeter, the valve before the operation impeller pump is controlled the size of dosage, however muddy lime slurry usually rotor is flooded, the position of the extremely ugly clear rotor of operator, regulated valve is controlled dosage by rule of thumb.In addition; Along with lime constantly fouling in transfer lime, identical valve opening, the lime slurry flow that passes through is also along with changing; Therefore can't accurately regulate the pH value only according to artificial valve regulation and control, also can produce downstream process and impact owing to the fluctuation of pH value.If lime adds instability, excessive lime also very easily causes the fouling and the obstruction of downstream line in addition.
The second, in the early stage lime dosing system, water is to obtain data through watchstander's manual inspection; Detected once in general one hour; Water quality testing data is discontinuous relatively, if meet emergency situatioies such as variation water quality or even sudden change, is difficult to make rapid reaction.
The 3rd, the labour intensity of artificial preparing lime milk liquid is excessive.The workman from be transported to out bag again batching add the not only time of labor and manpower, and the lime dust of escaping out all has bigger harm to the respiratory system and the eyes of human body, and causes environmental pollution therebetween.
Present stage the complete adding equipment of lime occurred along with the raising of automatic control level, but still has following shortcoming: the process of adding is an open type, and the serious and incidental dust removal installation of the process that feeds intake dust pollution is simple; The lime storage bin adopts ultrasonic material level meter, is subject to the high concentrate dust influence, measures inaccurate; Storage bin sodalime moisture-sensitive, and tap density is inhomogeneous, causes the bottom that arch formation takes place, and causes discharging unstable; Adopt solid flowmeter metering feed inaccurate, it is low to add efficient, fluctuation of service.
Summary of the invention
The objective of the invention is that dust pollution, the labour intensity of lime in the process of adding is big, dosage is unstable and unsafe problem, proposes the device and method that a kind of automatic ration adds lime in order to solve.
The objective of the invention is to realize through following technical scheme.
A kind of automatic ration of the present invention adds the device of lime, comprises lime storage bin, blanking machine, feeding machine, milk of lime preparing tank, preparation pump, dosing chamber, batch pump and neutralization tank;
The lime storage bin is furnished with air pump, and lime that can tank car is in bulk sucks in the storage bin, and lime storage bin Cang Ding is equipped with the high-effective dust-removing facility, and dust-cleaning principle is the pulsed cloth bag high-effective dust-removing that recoils automatically, prevents that lime powder from flying ease; Lime storage bin outfit radar level-sensing device is realized buying securities with all one's capital, the hole capital after selling all securities warning device, avoids excessively charging or system's fracture to add; Lime storage bin base cone cone angle is 63.8 degree, and lime storage bin centrum internal surface is through the corrosion-resistant tetrafluoroethylene gloss paint of sandblast polishing spraying abrasion-proof;
Blanking machine is made up of star-like blanking device vibrator and slide valve, and during blanking, through the signal enabling vibrator that PLC provides, slide valve is opened automatically, guarantees that lime powder evenly gets into feeding machine;
Feeding machine is made up of transfer roller and material measuring device; Transfer roller is that totally enclosed is carried, and adopts variable-frequency motor, and with electronic induction material measuring device interlocking, through PLC control, upper computer shows material, and when reaching the material required amount, blanking machine and feeding machine shut down, and accomplish frequency conversion, even feeding;
The milk of lime preparing tank is provided with stirrer, liquidometer to accomplish the process for preparation of milk of lime; Adopt closure designs in it; Jet flow negative pressure damp-proof device and sprinkling system are set; Principle is that spray thrower is the trunnion ejector, and the spray process adds to the zone of milk of lime preparing tank at lime powder and produces negative pressuren zone, prevents because of on the lime powder that stirs water-drop sputtering to the feeding machine discharge port that produces; Play dampproof effect, prevent dust pollution; When lime was quantitatively gone into jar through blanking machine, feeding machine, PLC started stirrer and Water filling valve in the milk of lime batch tank automatically, opens sprinkling system simultaneously, and upper computer can be controlled lime dosage and water injection rate automatically, has guaranteed the compound concentration of lime slurry;
The preparation pump adopts anti-wear, the protection against corrosion pump housing, accomplishes the process that milk of lime is promoted to dosing chamber, is controlled by PLC;
Dosing chamber is used to store milk of lime, and volume is 3 times of milk of lime preparing tank, in establish stirrer, guarantee that milk of lime concentration in the process of adding is even;
The pumping function of batching adds milk of lime for regulating automatically; It adopts anti-wear, the protection against corrosion pump housing; Be VFC,,, can accomplish automatic adjusting and add the milk of lime amount, guarantee that the wastewater pH after the neutralization is neutral by PLC control through the interlocking of the pH appearance in the neutralization tank.
A kind of automatic ration of the present invention adds the method for lime, and concrete steps are:
1) lime tank car is in bulk is squeezed into the lime storage bin with air pump, and the lime in the lime storage bin quantitatively is transported to the milk of lime preparing tank through blanking machine and feeding machine successively and clears up, and water input is arranged in the milk of lime preparing tank;
The milk of lime that 2) will pass through after step 1) is cleared up with the preparation pump is quantitatively squeezed in the dosing chamber;
3) will pass through step 2) milk of lime after handling quantitatively adds to the neutralization tank that acid waste water is housed with the pump of batching acid waste water carried out acid-base neutralisation.
Beneficial effect
The present invention is totally-enclosed design, and automatization level is high, and labour intensity is low, and the lime dosage is accurate, and is stable.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment
A kind of automatic ration adds the device of lime, comprises lime storage bin, blanking machine, feeding machine, milk of lime preparing tank, preparation pump, dosing chamber, batch pump and neutralization tank;
The lime storage bin is furnished with air pump, and lime that can tank car is in bulk sucks in the storage bin, and lime storage bin Cang Ding is equipped with the high-effective dust-removing facility, and dust-cleaning principle is the pulsed cloth bag high-effective dust-removing that recoils automatically, prevents that lime powder from flying ease; Lime storage bin outfit radar level-sensing device is realized buying securities with all one's capital, the hole capital after selling all securities warning device, avoids excessively charging or system's fracture to add; Lime storage bin base cone cone angle is 63.8 degree, and lime storage bin centrum internal surface is through the corrosion-resistant tetrafluoroethylene gloss paint of sandblast polishing spraying abrasion-proof;
The lime storage bin is designed to two, each lime storage bin reserves 35m
3, lime storage bin specification is Φ 2500 * 9000mm, per hour carrying and adding the unslaked lime amount is 850kg/h;
Blanking machine is made up of star-like blanking device vibrator and slide valve, and during blanking, through the signal enabling vibrator that PLC provides, slide valve is opened automatically, guarantees that lime powder evenly gets into feeding machine;
Feeding machine is made up of transfer roller and material measuring device; Transfer roller is that totally enclosed is carried, and adopts variable-frequency motor, and with electronic induction material measuring device interlocking, through PLC control, upper computer shows material, and when reaching the material required amount, blanking machine and feeding machine shut down, and accomplish frequency conversion, even feeding;
The milk of lime preparing tank is provided with stirrer, liquidometer to accomplish the process for preparation of milk of lime; Adopt closure designs in it; Jet flow negative pressure damp-proof device and sprinkling system are set; Principle is that spray thrower is the trunnion ejector, and the spray process adds to the zone of milk of lime preparing tank at lime powder and produces negative pressuren zone, prevents because of on the lime powder that stirs water-drop sputtering to the feeding machine discharge port that produces; Play dampproof effect, prevent dust pollution; When lime was quantitatively gone into jar through blanking machine, feeding machine, PLC started stirrer and Water filling valve in the milk of lime batch tank automatically, opens sprinkling system simultaneously, and upper computer can be controlled lime dosage and water injection rate automatically, has guaranteed the compound concentration of lime slurry;
The preparation pump adopts anti-wear, the protection against corrosion pump housing, accomplishes the process that milk of lime is promoted to dosing chamber, is controlled by PLC;
Dosing chamber is used to store milk of lime, and volume is 3 times of milk of lime preparing tank, in establish stirrer, guarantee that milk of lime concentration in the process of adding is even;
The pumping function of batching adds milk of lime for regulating automatically; It adopts anti-wear, the protection against corrosion pump housing; Be VFC,,, can accomplish automatic adjusting and add the milk of lime amount, guarantee that the wastewater pH after the neutralization is neutral by PLC control through the interlocking of the pH appearance in the neutralization tank.
A kind of automatic ration adds the method for lime, and concrete steps are:
1) lime tank car is in bulk is squeezed into the lime storage bin with air pump, and the lime in the lime storage bin quantitatively is transported to the milk of lime preparing tank through blanking machine and feeding machine successively and clears up, and in the milk of lime preparing tank water is arranged;
The milk of lime that 2) will pass through after step 1) is cleared up with the preparation pump is quantitatively squeezed in the dosing chamber;
3) will pass through step 2) milk of lime after handling quantitatively adds to the neutralization tank that nitro-cotton acid waste water is housed with the pump of batching nitro-cotton acid waste water carried out acid-base neutralisation, and the input of nitro-cotton acid waste water is 3000m
3/ d, the pH value is 1, and the pH value of the nitro-cotton acid waste water after the neutralization is 7.4 ± 0.3, and the amount of handling 12 hours post consumption unslaked lime is 10.2 tons.
Claims (1)
1. an automatic ration adds the device of lime, it is characterized in that: comprise lime storage bin, blanking machine, feeding machine, milk of lime preparing tank, preparation pump, dosing chamber, batch pump and neutralization tank;
The lime storage bin is furnished with air pump, and lime storage bin Cang Ding is equipped with the high-effective dust-removing facility; The lime storage bin is equipped with the radar level-sensing device; Lime storage bin base cone cone angle is 63.8 degree, and lime storage bin centrum internal surface is through the corrosion-resistant tetrafluoroethylene gloss paint of sandblast polishing spraying abrasion-proof;
Blanking machine is made up of star-like blanking device vibrator and slide valve, and during blanking, through the signal enabling vibrator that PLC provides, slide valve is opened automatically;
Feeding machine is made up of transfer roller and material measuring device; Transfer roller is that totally enclosed is carried, and adopts variable-frequency motor, and with electronic induction material measuring device interlocking, through PLC control, upper computer shows material, and when reaching the material required amount, blanking machine and feeding machine shut down, and accomplish frequency conversion, even feeding;
The milk of lime preparing tank is provided with stirrer, liquidometer to accomplish the process for preparation of milk of lime; Adopt closure designs in it; Jet flow negative pressure damp-proof device and sprinkling system are set, and when lime was quantitatively gone into jar through blanking machine, feeding machine, PLC started stirrer and Water filling valve in the milk of lime batch tank automatically; Open sprinkling system simultaneously, upper computer is controlled lime dosage and water injection rate automatically;
The preparation pump adopts anti-wear, the protection against corrosion pump housing, accomplishes the process that milk of lime is promoted to dosing chamber, is controlled by PLC;
Dosing chamber is used to store milk of lime, and volume is 3 times of milk of lime preparing tank, in establish stirrer;
The pump of batching adopts anti-wear, the protection against corrosion pump housing; Be VFC,, control by PLC through the interlocking of the pH appearance in the neutralization tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105913408A CN102101714B (en) | 2010-12-16 | 2010-12-16 | Device and method for quantitatively charging lime automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105913408A CN102101714B (en) | 2010-12-16 | 2010-12-16 | Device and method for quantitatively charging lime automatically |
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| CN102101714A CN102101714A (en) | 2011-06-22 |
| CN102101714B true CN102101714B (en) | 2012-05-23 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818615B (en) * | 2012-08-31 | 2015-01-07 | 中联重科股份有限公司 | Material metering control method, controller, system and mixing station |
| CN103055757B (en) * | 2012-12-31 | 2014-09-17 | 天津市环境保护科学研究院 | Smart autocontrol lime addition device and addition method thereof |
| CN104291429B (en) * | 2014-10-31 | 2016-03-23 | 四川北方硝化棉股份有限公司 | Nitro-cotton waste acid water and lime slurry neutralization treatment unit |
| CN108017111A (en) * | 2017-12-26 | 2018-05-11 | 北京北方节能环保有限公司 | Dust active carbon automatic Dosing System |
| CN110467249A (en) * | 2019-08-13 | 2019-11-19 | 山西太钢不锈钢股份有限公司 | Pickling water ph value controlled system with self-regulation and control method |
| CN112624295A (en) * | 2021-01-18 | 2021-04-09 | 贵州东峰锑业股份有限公司 | Control system for automatically adjusting pH in wastewater treatment process |
| CN112978885A (en) * | 2021-02-24 | 2021-06-18 | 山西太钢不锈钢股份有限公司 | Wastewater treatment lime milk preparation and adding device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343161Y (en) * | 1998-09-10 | 1999-10-13 | 周惠臣 | Automatic device for preparing and adding lime milk |
| CN2639261Y (en) * | 2003-08-18 | 2004-09-08 | 杨林江 | Continuous dynamic material metering device |
| CN201031203Y (en) * | 2007-03-23 | 2008-03-05 | 太平洋水处理工程有限公司 | Novel calcareousness automatically adding device |
| 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 |
| CN201495126U (en) * | 2009-09-23 | 2010-06-02 | 上海东振环保工程技术有限公司 | Lime cream preparing and adding device |
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Address after: 100070 Beijing city Fengtai District Seahawk Road, the headquarters of the International Hospital No. 6 Building No. 21 Applicant after: China North Energy Conservation and Environment Protection Co., Ltd. Address before: 100070 Beijing city Fengtai District Seahawk Road, the headquarters of the International Hospital No. 6 Building No. 21 Applicant before: CNGC Enviro-tech Development Co., Ltd. |
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