CN105067062A - Precision metering system and method of anti-caking oil of composite fertilizer - Google Patents
Precision metering system and method of anti-caking oil of composite fertilizer Download PDFInfo
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- CN105067062A CN105067062A CN201510416797.8A CN201510416797A CN105067062A CN 105067062 A CN105067062 A CN 105067062A CN 201510416797 A CN201510416797 A CN 201510416797A CN 105067062 A CN105067062 A CN 105067062A
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Abstract
The invention discloses a precision metering system and method of anti-caking oil of composite fertilizer. The precision metering system comprises a vertical centrifugal type oil supplying pump, a core metering barrel, a centrifugal type oil injection pump and an instrument control device. The vertical centrifugal type oil supplying pump, the core metering barrel and the centrifugal type oil injection pump are connected with the instrument control device. The vertical centrifugal type oil supplying pump and the centrifugal type oil injection pump are connected with the core metering barrel. The instrument control device receives oil level changing signals obtained by a flange type pressure transmitter which is used for detecting oil levels, and calculates instantaneous flow of injected oil via the oil level changing signal in real time so as to control rotation speed of the oil injection pump. The beneficial effects are that reliability and precision of metering are greatly improved; by use of the centrifugal type pump, the precision metering system is simple in structure, low in fault rate, reliable in operation and capable of timely giving an alarm when the instantaneous flow exceeds the set value and when oil paths and devices break down; precise proportioning can be achieved according to the yield of the fertilizer, so cost is reduced and anti-caking effects are improved.
Description
Technical field
The present invention relates to metering field, more particularly, relate to a kind of composite fertilizer anti-caking oil accurate metering system and method.
Background technology
During nitrogen-phosphorus-potassium compound fertilizer is produced, finished product prevents caking from being very important procedure.Need the instantaneous delivery according to finished product composite fertilizer, spray into anti-caking oil in proportion.Anti-caking oil at room temperature becomes solid-state, needs to heat to more than 60 DEG C to dissolve into liquid in adition process, is sprayed onto on composite fertilizer's finished particle with after oil pump pressurization.Current, nitrogen-phosphorus-potassium compound fertilizer anti-caking oil consumption generally between 0.8 ~ 2Kg/t, depending on the how many instantaneous distributive value of composite fertilizer's output between 10 ~ 40Kg/h.Because oil spout instantaneous delivery is little, when selecting the flowmeters such as common little latus rectum turbine, because oil contains impurity, often occur choked flow gauge situation, actual service condition is undesirable.Be difficult to accurate-metering.Also have and adopt Weighing mode, but connect heating tube and spray bar due to tank body, weight cannot Measurement accuracy, and distributive value is less in addition, and it is too little that minimizing weight per minute accounts for gross weight ratio, also adds difficulty to accurate-metering.Adopt more piston-type measurement pump mode, because impurity is more, often occur reversing ball blocking case, or occur reversing ball sealing place leakage of oil, volume pump will be caused to measure inaccurate situation, and human eye is difficult to Timeliness coverage.This mode can not show again digital actual instantaneous delivery, causes composite fertilizer's finished product preventing blocking effect undesirable.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of composite fertilizer anti-caking oil accurate metering system and method, is difficult to accurate-metering and numerical monitor, the problem that volume pump transmission portion is many, failure rate is high in order to solve existing various metering method; Use measuring apparatus of the present invention, can accurately show and control distributive value, increase substantially the reliability of metering, use centrifugal pump structure instead simple, failure rate is low.When instantaneous delivery exceeds the scope of setting, oil circuit and equipment is when breaking down, timely alarm.The present invention overcomes existing equipment defect completely.
The present invention solves the problems of the technologies described above, and provides the following technical scheme solved: a kind of composite fertilizer anti-caking oil accurate metering system, and it comprises vertical centrifugal type oil feed pump, core batch box, centrifugal injection pump and instrument control device;
Described vertical centrifugal type oil feed pump, for described core batch box fuel feeding off and on;
Described core batch box, for metering and splendid attire anti-caking oily, it comprises staving, is arranged at bottom staving, for heat anti-caking oil sleeve heater, to be arranged on described sleeve heater and for the flange form pressure unit of Survey control oil level;
Described centrifugal injection pump, for being sprayed onto compound fertilizer granules by the anti-caking oil in described core batch box;
Described instrument control device, for measure control;
Described vertical centrifugal type oil feed pump, core batch box and centrifugal injection pump are electrically connected with instrument control device respectively; Described vertical centrifugal type oil feed pump is connected with core batch box respectively with centrifugal injection pump.
In composite fertilizer of the present invention anti-caking oil accurate metering system, described core batch box adopts slender type batch box, be convenient to anti-caking oil distributive value less time, the change of oil mass liquid level is more obvious.
In composite fertilizer of the present invention anti-caking oil accurate metering system, described its measuring surface of flange form pressure unit and medium contact area greatly, prevent well cuts from blocking and measure oil circuit, and arrange distance between staving at about 60mm, avoid distance, cause the crystallization of anti-caking oil.
In composite fertilizer of the present invention anti-caking oil accurate metering system, instrument control device also comprises touch display screen, for showing composite fertilizer's finished product instantaneous flow and anti-caking oil instantaneous flow and manually setting distributive value, oil spout ratio.
In composite fertilizer of the present invention anti-caking oil accurate metering system, described vertical centrifugal type oil feed pump adopts can intermittently used vertical centrifugal type oil feed pump.
The present invention also provides a kind of composite fertilizer's anti-caking olein true metering method, and the method comprises the steps:
S1, described instrument control device receive described flange form pressure unit detection oil level and obtain oil level variable signal;
S2, described instrument control device are by judging that the oil level variable signal of described pressure unit collection in the per unit time accurately calculates oil spout instantaneous delivery and composite fertilizer finished product instantaneous flow rate signal by being multiplied by compared with given ratio value, control the rotating speed of described centrifugal injection pump, anti-caking oil is sprayed onto on composite fertilizer's finished particle; .
S3, described instrument control device are by oil level variable signal, and reed time controll vertical centrifugal type oil feed pump is interrupted fuel feeding to described core batch box; In Fuel injection system: injection pump is always by constant close to rotation speed operation during lower limit level.
In composite fertilizer of the present invention anti-caking oil accurate metering system, the instantaneous delivery accurately calculated according to oil level variable signal described in described step S2 and composite fertilizer finished product instantaneous flow rate signal, by being multiplied by compared with given ratio value, calculating difference thus revise the rotating speed of centrifugal injection pump further.
Implement composite fertilizer of the present invention anti-caking oil accurate metering system and method, there is following beneficial effect: owing to adopting the change of flange form pressure transmitter measurement oil level, piezometric surface area can not block greatly, batch box is elongated meet distributive value less time, oil level change is obviously convenient to Measurement accuracy, and metering reliability and precision are all increased substantially, owing to have employed centrifugal pump, structure is simple, and failure rate is low is reliable.When instantaneous delivery exceeds the scope of setting, oil circuit and equipment is when breaking down, timely alarm.According to the accurate proportioning of composite fertilizer's output, both can reduce cost, turn improved anti-caking effect.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of composite fertilizer of the present invention anti-caking oil accurate metering system and method;
1, molten oil tank, 2, oil feed pump, 3, oil pipe, 4, core batch box, 5, centrifugal injection pump, 6, instrument control device, 41, staving, 42, flange form pressure unit, 43, sleeve heater, 51, the oil level upper limit, 52, oil level lower limit.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, be the structural representation of composite fertilizer of the present invention anti-caking oil accurate metering system and method; A kind of composite fertilizer anti-caking oil accurate metering system, it comprises vertical centrifugal type oil feed pump, core batch box, centrifugal injection pump and instrument control device;
Described vertical centrifugal type oil feed pump, for described core batch box fuel feeding off and on;
Described core batch box, for metering and splendid attire anti-caking oily, it comprises staving, is arranged at bottom staving, for heat anti-caking oil sleeve heater, to be arranged on described sleeve heater and for the flange form pressure unit of Survey control oil level;
Described centrifugal injection pump, for being sprayed onto compound fertilizer granules by the anti-caking oil in described core batch box;
Described instrument control device, for measure control;
Described vertical centrifugal type oil feed pump, core batch box and centrifugal injection pump are electrically connected with instrument control device respectively; Described vertical centrifugal type oil feed pump is connected with core batch box respectively with centrifugal injection pump.
In composite fertilizer of the present invention anti-caking oil accurate metering system, described core batch box adopts slender type batch box, be convenient to anti-caking oil oil mass less time, the change of oil mass liquid level is more obvious.
In composite fertilizer of the present invention anti-caking oil accurate metering system, described flange form pressure unit accurately calculates between oil spout instantaneous delivery and staving and arranges distance at about 60mm, avoids distance, causes the crystallization of anti-caking oil.
In composite fertilizer of the present invention anti-caking oil accurate metering system, instrument control device also comprises touch display screen, for showing composite fertilizer's finished product instantaneous flow and anti-caking oil instantaneous flow and manually setting distributive value, oil spout ratio.
In composite fertilizer of the present invention anti-caking oil accurate metering system, described vertical centrifugal type oil feed pump adopts can intermittently used vertical centrifugal type oil feed pump.
The present invention also provides a kind of composite fertilizer's anti-caking olein true metering method, and the method comprises the steps:
S1, described instrument control device receive described flange form pressure unit detection oil level and obtain oil level variable signal;
S2, described instrument control device are by judging that the oil level variable signal of described pressure unit collection in the per unit time accurately calculates oil spout instantaneous delivery and composite fertilizer finished product instantaneous flow rate signal by being multiplied by compared with given ratio value, control the rotating speed of described centrifugal injection pump, anti-caking oil is sprayed onto on composite fertilizer's finished particle.
S3, described instrument control device are by oil level variable signal, and reed time controll vertical centrifugal type oil feed pump is interrupted fuel feeding to described core batch box; In Fuel injection system: injection pump is always by constant close to rotation speed operation during lower limit level;
In composite fertilizer of the present invention anti-caking oil accurate metering system, the instantaneous delivery accurately calculated according to oil level variable signal described in described step S2 and composite fertilizer finished product instantaneous flow rate signal, by being multiplied by compared with given ratio value, calculating difference thus revise the rotating speed of centrifugal injection pump further.
Principle of work of the present invention: after instrument control device electrifying startup, first instrument control device detects oil level by flange form pressure unit, after startup interval vertical centrifugal type oil feed pump is added to measurement bucket set upper limit oil level oil, fuel cut-off.Arrange a baseband signal according to composite fertilizer's instantaneous flow to be exported by instrument control device, control frequency converter and regulate injection pump rotating speed, anti-caking oil is sprayed onto on composite fertilizer's finished particle, now measure bucket oil level in continuous decline, according to the diameter measuring bucket, calculate by usual amounts consumption per hour 35kg, oil level decline 39mm per minute.This fall pressure unit is easy to measure, measurement per minute pressure (i.e. oil level) is controlled by instrument control device, last oil level of measuring deducts this measurement oil level, automatically instantaneous delivery per hour is converted into by instrument control device program, directly with numerical monitor out, and to feed back in control loop and composite fertilizer's instantaneous flow is multiplied by given ratio value and compares, difference is by instrument control device loop, the centrifugal injection pump rotating speed of further correction, meet the requirements of distributive value, when batch box oil level drops to, regulation is lower prescribes a time limit, instrument control device stops calculating instantaneous delivery, centrifugal injection pump rotating speed keeps existing rotating speed constant always, vertical centrifugal type oil feed pump starts and starts to batch box fuel feeding, the fuel cut-off when reaching set upper limit.Oil spout instantaneous flow restarts to calculate, and restarts instrument control device and controls.This process is gone round and begun again.Native system also adds perfect alarm, when warnings such as oil feed pump operation is overtime, oil spout instantaneous flow goes beyond the scope, oil pump damages, ensure that system malfunctions points out operator in time.
Compared with prior art, implement composite fertilizer of the present invention anti-caking oil accurate metering system and method, there is following beneficial effect: owing to adopting the change of flange form pressure transmitter measurement oil level, piezometric surface area can not block greatly, batch box is elongated meet distributive value less time, oil level change is obviously convenient to Measurement accuracy, metering reliability and precision are all increased substantially, and owing to have employed centrifugal pump, structure is simple, failure rate is low, reliable.When instantaneous delivery exceeds the scope of setting, oil circuit and equipment is when breaking down, timely alarm.According to the accurate proportioning of composite fertilizer's output, both can reduce cost, turn improved anti-caking effect.
The above embodiment only have expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. composite fertilizer's anti-caking oil accurate metering system, is characterized in that, comprise vertical centrifugal type oil feed pump, core batch box, centrifugal injection pump and instrument control device;
Described vertical centrifugal type oil feed pump, for described core batch box fuel feeding off and on;
Described core batch box, for metering and splendid attire anti-caking oily, it comprises staving, is arranged at bottom staving, for heat anti-caking oil sleeve heater, to be arranged on described sleeve heater and for the flange form pressure unit of Survey control oil level;
Described centrifugal injection pump, for being sprayed onto compound fertilizer granules by the anti-caking oil in described core batch box;
Described instrument control device, controls for measuring apparatus;
Described vertical centrifugal type oil feed pump, core batch box and centrifugal injection pump are electrically connected with instrument control device respectively; Described vertical centrifugal type oil feed pump is connected with core batch box respectively with centrifugal injection pump.
2. composite fertilizer according to claim 1 anti-caking oil accurate metering system, is characterized in that, described core batch box adopts slender type batch box, be convenient to anti-caking oil oil mass less time, the change of oil mass liquid level is more obvious.
3. composite fertilizer according to claim 1 anti-caking oil accurate metering system, it is characterized in that, described flange form pressure unit, its measuring surface and medium contact area large, prevent well cuts from blocking and measure oil circuit, and distance is set between staving at about 60mm, avoids distance, cause the crystallization of anti-caking oil.
4. composite fertilizer according to claim 1 anti-caking oil accurate metering system, it is characterized in that, instrument control device also comprises touch display screen, for showing composite fertilizer's finished product instantaneous flow and anti-caking oil instantaneous flow and manually setting distributive value, oil spout ratio.
5. composite fertilizer according to claim 1 anti-caking oil accurate metering system, is characterized in that, described vertical centrifugal type oil feed pump adopts can the centrifugal vertical centrifugal type oil feed pump of discontinuous operation.
6. the true metering method of composite fertilizer's anti-caking olein, it is characterized in that, the method comprises the steps:
S1, described instrument control device receive described flange form pressure unit detection oil level and obtain oil level variable signal;
S2, described instrument control device are by judging that the oil level variable signal of described pressure unit collection in the per unit time accurately calculates oil spout instantaneous delivery and composite fertilizer finished product instantaneous flow rate signal by being multiplied by compared with given ratio value, control the rotating speed of described centrifugal injection pump, anti-caking oil is sprayed onto on composite fertilizer's finished particle;
S3, described instrument control device are by oil level variable signal, and reed time controll vertical centrifugal type oil feed pump is interrupted fuel feeding to described core batch box; In Fuel injection system: injection pump is always by constant close to rotation speed operation during lower limit level.
7. according to claim, the described true metering method of composite fertilizer's anti-caking olein, it is characterized in that, the instantaneous delivery accurately calculated according to oil level variable signal described in described step S2 and composite fertilizer finished product instantaneous flow rate signal, by being multiplied by compared with given ratio value, calculating difference thus revise the rotating speed of centrifugal injection pump further.
8. according to claim, the described true metering method of composite fertilizer's anti-caking olein, is characterized in that: when instantaneous delivery exceeds the scope of setting, oil circuit and equipment is when breaking down, timely alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510416797.8A CN105067062B (en) | 2015-07-16 | 2015-07-16 | A kind of composite fertilizer's anti-caking oil accurate metering system and method |
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| CN201510416797.8A CN105067062B (en) | 2015-07-16 | 2015-07-16 | A kind of composite fertilizer's anti-caking oil accurate metering system and method |
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| CN105067062A true CN105067062A (en) | 2015-11-18 |
| CN105067062B CN105067062B (en) | 2017-12-12 |
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Citations (6)
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| WO2000035573A1 (en) * | 1998-12-15 | 2000-06-22 | Advanced Technology Materials, Inc. | Apparatus and method for point-of-use treatment of effluent gas streams |
| CN2905783Y (en) * | 2005-12-09 | 2007-05-30 | 广东福利龙复合肥有限公司 | Envelope device for producing compound mixing fertilizer |
| CN201883048U (en) * | 2011-02-28 | 2011-06-29 | 辽宁津大肥业有限公司 | Compound fertilizer anti-caking oil spraying system |
| CN202730025U (en) * | 2012-07-27 | 2013-02-13 | 山东省平度市滑石矿业有限公司 | Compound fertilizer anti-blocking spray head |
| CN103539519A (en) * | 2013-09-26 | 2014-01-29 | 北京富瑞雪科技发展有限公司 | Automatic adding system for anti-blocking agent for compound fertilizer |
| CN104557342A (en) * | 2015-02-04 | 2015-04-29 | 安徽帝元生物科技有限公司 | Preparation method of retention urea |
-
2015
- 2015-07-16 CN CN201510416797.8A patent/CN105067062B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000035573A1 (en) * | 1998-12-15 | 2000-06-22 | Advanced Technology Materials, Inc. | Apparatus and method for point-of-use treatment of effluent gas streams |
| CN2905783Y (en) * | 2005-12-09 | 2007-05-30 | 广东福利龙复合肥有限公司 | Envelope device for producing compound mixing fertilizer |
| CN201883048U (en) * | 2011-02-28 | 2011-06-29 | 辽宁津大肥业有限公司 | Compound fertilizer anti-caking oil spraying system |
| CN202730025U (en) * | 2012-07-27 | 2013-02-13 | 山东省平度市滑石矿业有限公司 | Compound fertilizer anti-blocking spray head |
| CN103539519A (en) * | 2013-09-26 | 2014-01-29 | 北京富瑞雪科技发展有限公司 | Automatic adding system for anti-blocking agent for compound fertilizer |
| CN104557342A (en) * | 2015-02-04 | 2015-04-29 | 安徽帝元生物科技有限公司 | Preparation method of retention urea |
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