CN104122866A - Automatic drip fertigation device and control method - Google Patents
Automatic drip fertigation device and control method Download PDFInfo
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- CN104122866A CN104122866A CN201410345332.3A CN201410345332A CN104122866A CN 104122866 A CN104122866 A CN 104122866A CN 201410345332 A CN201410345332 A CN 201410345332A CN 104122866 A CN104122866 A CN 104122866A
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- fertilizer
- cage
- valve
- spreading tank
- fertilizer spreading
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Abstract
The invention belongs to the field of agriculture fertilizing devices and relates to an automatic drip fertigation device and a control method. A fertilizing tank inlet connected with a submerged pump is formed in the upper portion of a fertilizing tank of the automatic drip fertigation device, a fertilizer feeding hopper is arranged at the top of the fertilizing tank, and a fertilizer in the fertilizer feeding hopper enters the fertilizing tank through a fertilizer feeding stranding cage; a separation layer is installed in the fertilizing tank, stirring blades are arranged above the separation layer, and a circulating device is arranged on one side of the fertilizing tank; an ultrasound sensor is installed at the top of the fertilizing tank, and an air vent is formed in the top of the fertilizing tank; a fertilizer water outlet is formed in the bottom of the fertilizing tank, and mixed fertilizer water is lifted into a filtering system through a lifting pump from the fertilizer water outlet; a programmable logic controller (PLC) controls opening of a proportional valve, a rotation speed of a stranding cage motor, and work time of a circulation pump and a stirring motor. According to the automatic drip fertigation device and the control method, automatic continuous fertilizer feeding is achieved, the concentration of fertilizer water in the fertilizing tank is accurate and adjustable, and the fertilizing device can be rapidly stabilized.
Description
Technical field
The invention belongs to agricultural fertilizer device field, relate to a kind of automatic dripping irrigation fertilizer apparatus and control method.
Background technology
Fertigation refers to that fertilizer provides the process of nutriment, a kind of method of by irrigation system applying fertilizer with water for crop by irrigation system.Aspect fertilising control device in irrigation system, conventional fertilizer apparatus, can be divided into by its principle: differential, suction-type and pouring-in at present.China is since 20 century 70s are introduced modern water-saving irrigation technology, just carry out the research of advanced irrigation technique always, the research of automatic fertilizing apparatus is also progressively being goed deep into, and the automatic fertilizing apparatus of the employing deadweight injection mode designs such as Lu Yayun has been realized the control of constant fertilising.The Intellient control system for fertilization with mode of drop irrigation in greenhouse of Tianjin hydro science Research Institute can be realized real-time quantitative fertigation and manual intervention fertigation function.
Summary of the invention
The object of this invention is to provide a kind of automatic dripping irrigation fertilizer apparatus and control method, realized Automatic continuous and added fertilizer, in fertilizer spreading tank, rich water concentration is accurately adjustable, fertilizer apparatus energy fast and stable.
Technical scheme of the present invention is that the top of fertilizer spreading tank is provided with fertilizer spreading tank water inlet, circulating-pump outlet, sonac, exhausr port, and the centre position, top of fertilizer spreading tank is provided with stirring motor.
The top of fertilizer spreading tank is provided with and adds fertiliser bucket, and the fertilizer adding in fertiliser bucket enters fertilizer spreading tank by adding fertile cage, and cage motor drives and adds fertile cage, adds continuously fertilizer thereby realize.
In fertilizer spreading tank, be provided with interlayer, several filter cores are installed on interlayer, interlayer can separate the rich water mixing with the rich water mixing, and the concentration that has ensured to rise to the rich water in filtering system is even.Above interlayer, be provided with stirring vane, stirring motor drives stirring vane to stir rich water, and fertilizer is fully dissolved.
On the tank skin of fertilizer spreading tank, be provided with ebullator suction inlet near the top position of interlayer, ebullator suction inlet is connected with circulating-pump outlet by circulating line, and ebullator is housed on circulating line, and ebullator makes the water circulation in fertilizer spreading tank, thereby fertilizer is fully dissolved.
Below interlayer, the bottom of fertilizer spreading tank is provided with rich water outlet.
Fertilizer spreading tank water inlet is connected with T-valve, proportioning valve and submersible pump successively by pipeline.Be provided with retaining valve in order to prevent that rich water from refluxing at the by-pass port place of T-valve, retaining valve is connected with filtering system, and leading to of retaining valve is from submersible pump to filtering system.The Main Function of proportioning valve is to regulate the water entering in fertilising filling.
For preventing the impact of water level fluctuation on sonac, under sonac, connect hollow tubular.
Rich water outlet is connected with filtering system, connect rich water outlet and be provided with lift pump with the pipeline of filtering system, the rich water mixing rises to filtering system by lift pump from rich water outlet, all will pass through filtering system from water supply out of submersible pump and the rich water mixing, and then arrives drip irrigation zone.
PLC controller is connected with submersible pump, T-valve, proportioning valve, cage motor, lift pump, stirring motor, sonac, ebullator respectively.
Hollow tubular can be selected the pvc pipe of inner wall smooth.
The lift pump of this automatic dripping irrigation fertilizer apparatus can be selected plunger lift pump.
Between PLC controller and cage motor, submersible pump and lift pump, be respectively equipped with frequency converter.Between sonac and PLC controller, be provided with signal isolator, can effectively eliminate the interference of high-frequency signal to sonac that frequency converter produces.
Sonac is used for gathering water level signal, and water level signal is input in PLC controller and is participated in computing by the analog input module of PLC controller.
The PID function of PLC controller is carried out PID computing, the aperture of output Q control ratio valve, and when proportioning valve standard-sized sheet, controlling voltage is U, the aperture of proportioning valve
when proportioning valve standard-sized sheet, the flow of passing ratio valve is X L/min, and the pure water amount flowing in the time that the aperture of proportioning valve is A in fertilizer spreading tank is AX; If rich water concentration is B g/L in fertilizer spreading tank, add the fertile amount M=ABX of sending of fertile cage g/min, add the fertile amount of sending of fertile cage and add the lead angle α of fertile cage and the rotating speed v of cage motor is directly proportional, rotating speed v=number of pole-pairs n × 60 of cage motor second × frequency f, frequency of cage motor
wherein c is scale-up factor, the frequency of PLC controller output cage motor; PLC controller carries out intermittent work by Timer Controlling ebullator (19) and stirring motor (9) simultaneously.
The invention has the beneficial effects as follows that having realized Automatic continuous adds fertilizer, rich water concentration is even and accurately adjustable, and system rejection to disturbance ability is strong, and dynamic response is good, and overshoot is little and can fast and stable.
Brief description of the drawings
Fig. 1: vertical view of the present invention.
Fig. 2: the front view of fertilizer spreading tank of the present invention.
Drawing reference numeral: 1-submersible pump; 2-retaining valve; 3-T-valve; 4-proportioning valve; 5-cage motor; 6-lift pump; 7-fertilizer spreading tank; 8-fertilizer spreading tank water inlet; 9-stirring motor; 10-filtering system; 11-circulating-pump outlet; 12-exhausr port; 13-sonac; 14-add fertile cage; 15-interlayer; 16-circulating line; 17-stirring vane; 18-hollow tubular; 19-ebullator; 20-add fertiliser bucket; The outlet of 21-rich water; 22-ebullator suction inlet.
Embodiment
Below in conjunction with accompanying drawing, introduce in detail specific embodiments of the invention.
Execute as depicted in figs. 1 and 2 a kind of automatic dripping irrigation fertilizer apparatus, be provided with fertilizer spreading tank water inlet 8, circulating-pump outlet 11, sonac 13, exhausr port 12 above fertilizer spreading tank 7, the centre position, top of fertilizer spreading tank is provided with stirring motor 9; Sonac 13 is arranged on the line of exhausr port 12 and fertilizer spreading tank 7 central shafts.
The top of fertilizer spreading tank is provided with and adds fertiliser bucket 20, and the fertilizer adding in fertiliser bucket 20 enters fertilizer spreading tank 7 by adding fertile cage 14, and cage motor 5 drives and adds fertile cage 14.
In fertilizer spreading tank, be provided with interlayer 15, several filter cores are installed on interlayer, be provided with stirring vane 17 above interlayer, stirring motor 9 drives stirring vane.
On the tank skin of fertilizer spreading tank, be provided with ebullator suction inlet 22 near the top position of interlayer, ebullator suction inlet is connected with circulating-pump outlet 11 by circulating line 16, and ebullator 19 is housed on circulating line 16.
Below interlayer, the bottom of fertilizer spreading tank is provided with rich water outlet 21.
Fertilizer spreading tank water inlet 8 is connected with T-valve 3, proportioning valve 4 and submersible pump 1 respectively by pipeline, and the by-pass port of T-valve is connected with retaining valve 2, and retaining valve 2 is connected with filtering system 10, and leading to of retaining valve is from submersible pump to filtering system.
PLC controller is connected with submersible pump 1, T-valve 3, proportioning valve 4, cage motor 5, lift pump 6, stirring motor 9, sonac 13, ebullator 19 respectively.
The pvc pipe 18 that under sonac 13, connection diameter is 150mm.
Rich water outlet 21 is connected with filtering system 10, connects rich water outlet and is provided with plunger lift pump 6 with the pipeline of filtering system.
Between PLC controller and cage motor 5, submersible pump 1 and lift pump 6, be respectively equipped with frequency converter, between sonac 13 and PLC controller, be provided with signal isolator.Sonac gathers water level signal, and water level signal is input in PLC controller and is participated in computing by the analog input module of PLC controller.
The PID function of PLC controller is carried out PID computing, the aperture of output Q control ratio valve, and when proportioning valve standard-sized sheet, controlling voltage is U, the aperture of proportioning valve
when proportioning valve standard-sized sheet, the flow of passing ratio valve is X L/min, and the pure water amount flowing in the time that the aperture of proportioning valve is A in fertilizer spreading tank is AX; If rich water concentration is B g/L in fertilizer spreading tank, add the fertile amount M=ABX of sending of fertile cage g/min, add the fertile amount of sending of fertile cage and add the lead angle α of fertile cage and the rotating speed v of cage motor is directly proportional, rotating speed v=number of pole-pairs n × 60 of cage motor second × frequency f, frequency of cage motor
wherein c is scale-up factor, the frequency of PLC controller output cage motor.PLC controller is worked and is stopped one minute in two minutes by Timer Controlling ebullator 19 and stirring motor 9 simultaneously.
Claims (5)
1. an automatic dripping irrigation fertilizer apparatus, it is characterized in that, the top of fertilizer spreading tank (7) is provided with fertilizer spreading tank water inlet (8), circulating-pump outlet (11), sonac (13), exhausr port (12), and the centre position, top of fertilizer spreading tank is provided with stirring motor (9);
The top of fertilizer spreading tank is provided with and adds fertiliser bucket (20), the fertilizer adding in fertiliser bucket (20) enters fertilizer spreading tank (7) by adding fertile cage (14), and cage motor (5) drives and adds fertile cage (14);
In fertilizer spreading tank, be provided with interlayer (15), several filter cores are installed on interlayer, be provided with stirring vane (17) above interlayer, stirring motor (9) drives stirring vane;
On the tank skin of fertilizer spreading tank, be provided with ebullator suction inlet (22) near the top position of interlayer, ebullator suction inlet is connected with circulating-pump outlet (11) by circulating line (16), and ebullator (19) is housed on circulating line (16);
Below interlayer, the bottom of fertilizer spreading tank is provided with rich water outlet (21);
Fertilizer spreading tank water inlet (8) is connected with T-valve (3), proportioning valve (4) and submersible pump (1) successively by pipeline, the by-pass port that pipeline is provided with T-valve is connected with retaining valve (2), retaining valve (2) is connected with filtering system (10), and leading to of retaining valve is from submersible pump to filtering system;
Under sonac (13), connect hollow tubular (18);
Rich water outlet (21) is connected with filtering system (10), connects rich water outlet and is provided with lift pump (6) with the pipeline of filtering system;
PLC controller is connected with submersible pump (1), T-valve (3), proportioning valve (4), cage motor (5), lift pump (6), stirring motor (9), sonac (13), ebullator (19) respectively.
2. a kind of automatic dripping irrigation fertilizer apparatus according to claim 1, is characterized in that, the pvc pipe that described hollow tubular (18) is inner wall smooth.
3. a kind of automatic dripping irrigation fertilizer apparatus according to claim 1, is characterized in that, described lift pump (6) is plunger lift pump.
4. a kind of automatic dripping irrigation fertilizer apparatus according to claim 1, it is characterized in that, between PLC controller and cage motor (5), submersible pump (1) and lift pump (6), be respectively equipped with frequency converter, between sonac (13) and PLC controller, be provided with signal isolator.
5. the automatic dripping irrigation fertilising control method based on device described in claim 1, is characterized in that, sonac gathers water level signal, and water level signal is input in PLC controller and is participated in computing by the analog input module of PLC controller;
The PID function of PLC controller is carried out PID computing, the aperture of output Q control ratio valve, and when proportioning valve standard-sized sheet, controlling voltage is U, the aperture of proportioning valve
when proportioning valve standard-sized sheet, the flow of passing ratio valve is X L/min, and the pure water amount flowing in the time that the aperture of proportioning valve is A in fertilizer spreading tank is AX; If rich water concentration is B g/L in fertilizer spreading tank, add the fertile amount M=ABX of sending of fertile cage g/min, add the fertile amount of sending of fertile cage and add the lead angle α of fertile cage and the rotating speed v of cage motor is directly proportional, rotating speed v=number of pole-pairs n × 60 of cage motor second × frequency f, frequency of cage motor
wherein c is scale-up factor, the frequency of PLC controller output cage motor; PLC controller carries out intermittent work by Timer Controlling ebullator (19) and stirring motor (9) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410345332.3A CN104122866B (en) | 2014-07-18 | 2014-07-18 | Automatic drip fertigation device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410345332.3A CN104122866B (en) | 2014-07-18 | 2014-07-18 | Automatic drip fertigation device and control method |
Publications (2)
| Publication Number | Publication Date |
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| CN104122866A true CN104122866A (en) | 2014-10-29 |
| CN104122866B CN104122866B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410345332.3A Expired - Fee Related CN104122866B (en) | 2014-07-18 | 2014-07-18 | Automatic drip fertigation device and control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003289785A (en) * | 2002-04-08 | 2003-10-14 | Kubota Corp | Apparatus for spraying chemical, apparatus for forming levee, method for spraying chemical and method for spraying chemical and fertilizing |
| CN102369804A (en) * | 2010-08-19 | 2012-03-14 | 中国农业机械化科学研究院 | Intelligentized fertilizing apparatus, intelligentized fertilizing method and intelligentized fertilizing machine |
| CN103141206A (en) * | 2013-03-26 | 2013-06-12 | 中国农业大学 | Water, fertilizer and gas integrated trickle irrigation system and method |
| CN203152007U (en) * | 2013-03-24 | 2013-08-28 | 李青闻 | Pumping-in water-saving irrigation fertilizing device |
-
2014
- 2014-07-18 CN CN201410345332.3A patent/CN104122866B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003289785A (en) * | 2002-04-08 | 2003-10-14 | Kubota Corp | Apparatus for spraying chemical, apparatus for forming levee, method for spraying chemical and method for spraying chemical and fertilizing |
| CN102369804A (en) * | 2010-08-19 | 2012-03-14 | 中国农业机械化科学研究院 | Intelligentized fertilizing apparatus, intelligentized fertilizing method and intelligentized fertilizing machine |
| CN203152007U (en) * | 2013-03-24 | 2013-08-28 | 李青闻 | Pumping-in water-saving irrigation fertilizing device |
| CN103141206A (en) * | 2013-03-26 | 2013-06-12 | 中国农业大学 | Water, fertilizer and gas integrated trickle irrigation system and method |
Non-Patent Citations (1)
| Title |
|---|
| PLC及变频调速恒压喷灌系统的设计;刘永华等;《节水灌溉》;20090131;第44~45页以及第49页 * |
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| CN104122866B (en) | 2017-05-03 |
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Granted publication date: 20170503 Termination date: 20170718 |