CN111468031A - Automatic and accurate water and fertilizer proportioning control system and control method for sprinkling irrigation unit - Google Patents
Automatic and accurate water and fertilizer proportioning control system and control method for sprinkling irrigation unit Download PDFInfo
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- CN111468031A CN111468031A CN202010186111.1A CN202010186111A CN111468031A CN 111468031 A CN111468031 A CN 111468031A CN 202010186111 A CN202010186111 A CN 202010186111A CN 111468031 A CN111468031 A CN 111468031A
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- fertilizer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/883—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using flow rate controls for feeding the substances
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/042—Adding fertiliser to watering systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2212—Level of the material in the mixer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/32—Mixing fertiliser ingredients
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Fertilizing (AREA)
Abstract
The invention relates to a P L C control system and a control method for automatic and accurate water-fertilizer ratio of a sprinkling irrigation unit, belonging to the technical field of water-fertilizer integration.
Description
Technical Field
The invention belongs to the technical field of water-saving irrigation and water-fertilizer integration, is suitable for automatic preparation of different fertilizers and different water-fertilizer concentrations in an irrigation and fertilization process, and particularly relates to a water-fertilizer automatic accurate proportioning control system and a control method for a sprinkling irrigation unit.
Background
China is a big agricultural country and has great water and fertilizer consumption. Agricultural water accounts for 60% of the total water amount, and in irrigation areas with rich water resources, the problems of water waste and low water utilization efficiency generally exist. The consumption of fertilizers in China reaches the front of the world, the application amount of the fertilizers in farmlands is 2.1 times of the safety upper limit specified by developed countries, but the utilization rate of the fertilizers is reduced by only 30% due to excessive fertilization. In view of the problems of water and fertilizer waste in agriculture, water-saving irrigation engineering is greatly developed in China, and the popularization of a water and fertilizer integration technology can effectively solve the problems that most of irrigation and fertilization in China depend on user experience, the water and fertilizer utilization rate is low, the uniformity is poor, the water and fertilizer waste is serious and the like.
At present, the application of the irrigation and fertilization automation technology in China has a certain effect, but the problems of incomplete matching of key components, poor equipment control precision and the like still exist. The existing liquid manure proportioning device in China mostly adopts fertilizer applicators, solenoid valves, sensors and the like to form a closed-loop system to realize the control of the liquid manure concentration, but has the problems of system concentration fluctuation, poor fertilization uniformity and the like, and the precision level of the liquid manure integration technical system still needs to be improved.
Disclosure of Invention
The invention aims to provide a sprinkling irrigation unit water and fertilizer automatic accurate proportioning control system and a control method thereof, which can effectively control the use amount of different kinds of fertilizers, accurately prepare different water and fertilizer concentrations, uniformly mix the water and fertilizer, and meet the requirement of water and fertilizer integrated high-precision fertilization.
In order to realize the purpose, the invention adopts the technical scheme that: a sprinkling irrigation unit water-fertilizer automatic accurate proportioning control system comprises a mixed fertilizer tank, a fertilizer liquid barrel N, a fertilizer liquid barrel P and a fertilizer liquid barrel K, wherein a concentration meter is arranged in the mixed fertilizer tank, a water outlet and a main pipeline are installed on the mixed fertilizer tank, an electromagnetic valve a is installed on the fertilizer liquid barrel N, an electromagnetic valve b is installed on the fertilizer liquid barrel P, an electromagnetic valve c is installed on the fertilizer liquid barrel K, the electromagnetic valve a, the electromagnetic valve b and the electromagnetic valve c are connected on a pipeline at one end of a peristaltic pump in parallel, and a pipeline at the other end of the peristaltic pump is communicated with the main pipeline; the water outlet is connected with the water inlet through a water pump.
In the above scheme, install level gauge d in mixing fertile jar, install level gauge a in the fertile liquid bucket N, install level gauge b in the fertile liquid bucket P, install level gauge c in the fertile liquid bucket K.
In the above scheme, a connecting rod rotor is arranged in the fertilizer mixing tank, and the connecting rod rotor is connected with a fertilizer mixing motor outside the fertilizer mixing tank through a coupler.
In the scheme, the peristaltic pump is further provided with an electromagnetic valve d on a pipeline at one end, connected with the electromagnetic valve a, the electromagnetic valve b and the electromagnetic valve c in parallel, and a water and fertilizer outlet pipeline is arranged at the other end of the electromagnetic valve d.
In the above scheme, the concentration meter, the solenoid valve a, the solenoid valve b, the solenoid valve c, the peristaltic pump, the liquid level meter d, the liquid level meter a, the liquid level meter b, the liquid level meter c, the fertilizer mixing motor, the solenoid valve d and the water pump are all in signal connection with the control cabinet.
The invention also provides a control method of the automatic and accurate water-fertilizer ratio control system of the sprinkling irrigation unit, which mainly comprises the steps of inputting the proportion of nitrogen, phosphorus and potassium fertilizers, the concentration and the dosage of the water-fertilizer in an operation interface of a controller, calculating the required water quantity and various fertilizer quantities after P L C receives information, opening an electromagnetic valve a, an electromagnetic valve b and an electromagnetic valve C through a relay at an output port, adding fertilizers by positive rotation of a peristaltic pump, starting water adding by a water pump, obtaining real-time liquid level information of the liquid level meter a, the liquid level meter b and the liquid level meter C in three fertilizer liquid tanks in the process, comparing the real-time liquid level information with a preset lower limit value, stopping the system from working if a certain fertilizer liquid reaches the lowest liquid level value, prompting to add corresponding fertilizer liquid by a control cabinet interface, controlling a fertilizer motor to rotate by P L C after the water and the fertilizer liquid is added into a fertilizer mixing tank, driving a connecting rod rotor to stir, controlling a concentration meter in the mixing tank to transmit water-fertilizer concentration information to P L C after the water and the fertilizer liquid level are added into the mixing tank, controlling the water-fertilizer mixing tank to obtain the actual concentration and the water concentration, if the peristaltic pump is larger than the peristaltic pump, controlling the water pump to reach the lower limit value, and the water concentration, and the water pump, controlling the water pump to the water concentration, and the water pump to reach the lower limit value, and controlling the water concentration of the mixing tank, and controlling the water pump, if the mixing tank, if the water pump, and the water pump to control the water pump, and the water pump, if the water pump, the water concentration of the water pump, and.
The invention has the advantages that the proportion of the fertilizer liquid and the concentration of the water and fertilizer can be freely controlled according to the actual demand of crops, and the P L C control system is adopted, so that the accuracy and the high efficiency of the system are ensured, the waste of the water and fertilizer can be effectively reduced, and the accurate control of the integration of the irrigation water and fertilizer is realized.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a control flow diagram of the present invention.
In the figure 1, a filter screen, 2, a reservoir, 3, a water inlet, 4, a water pump, 5, a water outlet, 6, a mixed fertilizer tank, 7, a liquid level meter d, 8, a connecting rod rotor, 9, a concentration meter, 10, a mixed fertilizer motor, 11, a liquid level meter a, 12, a fertilizer liquid barrel N (nitrogen fertilizer), 13, a liquid level meter b, 14, a fertilizer liquid barrel P (phosphate fertilizer), 15, a liquid level meter c, 16, a fertilizer liquid barrel K (potassium fertilizer), 17, an electromagnetic valve a, 18, an electromagnetic valve b, 19, an electromagnetic valve c, 20, a main pipeline, 21, a peristaltic pump, 22, an electromagnetic valve d, 23, a water and fertilizer outlet pipeline, 24 and a control cabinet are arranged.
Detailed Description
The device comprises a filter screen 1, a reservoir 2, a water inlet 3, a water pump 4, a water outlet 5, a mixed fertilizer tank 6, a liquid level meter d7, a connecting rod rotor 8, a concentration meter 9, a mixed fertilizer motor 10, a liquid level meter a11, a liquid level meter barrel N (nitrogen fertilizer) 12, a liquid level meter b13, a liquid level meter barrel P (phosphate fertilizer) 14, a liquid level meter c15, a liquid level barrel K (potassium fertilizer) 16, an electromagnetic valve a17, an electromagnetic valve b18, an electromagnetic valve c19, a main pipeline 20, a peristaltic pump 21, an electromagnetic valve d22, a water and fertilizer outlet pipeline 23 and a control cabinet 24. The filter screen 1 is arranged in the reservoir 2 and is connected with the water inlet pipe 3, the water inlet pipe 3 is connected with the water pump 4, the outlet of the water pump 4 is connected with the water outlet pipe 5, and the water outlet pipe mouth 5 is connected with the mixed fertilizer tank 6. The liquid level meter a11 is arranged at the upper end of the inner side of the fertilizer liquid barrel N (nitrogen fertilizer) 12, and the fertilizer liquid barrel N (nitrogen fertilizer) 12 is connected with the electromagnetic valve a17 in series by a PC pipe and is marked as a pipeline 1; the liquid level meter b13 is arranged at the upper end of the inner side of the fertilizer liquid barrel P (phosphate fertilizer) 14, and the fertilizer liquid barrel P (phosphate fertilizer) 14 is connected with the electromagnetic valve b18 in series by adopting a PC pipe and is marked as a pipeline 2; the liquid level meter c15 is arranged at the upper end of the inner side of the fertilizer liquid barrel K (potash fertilizer) 16, and the fertilizer liquid barrel K (potash fertilizer) 16 and the electromagnetic valve c19 are connected in series by adopting a PC pipe and are marked as a pipeline 3. Line 1, line 2 and line 3 are referenced in parallel as line a. The electromagnetic valve d22 is connected in series with the water and fertilizer outlet pipeline 23 and is marked as a pipeline b. The pipeline a and the pipeline b are in threaded connection with the inlet of the peristaltic pump 21, and the outlet of the peristaltic pump 21 is connected with the fertilizer mixing tank 6 by adopting a PC pipe. The fertilizer mixing tank 6 is provided with a fertilizer mixing motor 10 and a connecting rod rotor 8 for stirring, is used for uniformly mixing fertilizer liquid, and is provided with a liquid level meter d7 and a concentration meter 9.
The method comprises the following steps that firstly, a fertilizer liquid barrel N (nitrogen fertilizer) 12, a fertilizer liquid barrel P (phosphate fertilizer) 14 and a fertilizer liquid barrel K (potash fertilizer) 16 are respectively filled with corresponding fertilizer liquid, assuming that a certain crop needs a water fertilizer 100 with the concentration of 5% in a certain period, wherein the proportion of N (nitrogen), P (phosphorus) and K (potash) fertilizers is 3:5:2, corresponding data are input on a control cabinet 24, P L C calculates the needed water 95L, N (nitrogen) fertilizer 1.5L, P (phosphorus) fertilizer 2.5L and K (potash) fertilizer 1L, the peristaltic pump 21 is started to add positive fertilizer, a water pump 4 adds water, an electromagnetic valve a17, an electromagnetic valve b18 and an electromagnetic valve C19 are started, the electromagnetic valves a 8, 737b 6866 and C19 are set according to the flow rate of the peristaltic pump 21 and the calculated needed fertilizer liquid amount, the electromagnetic valves a 8, the electromagnetic valves b 6866 and the electromagnetic valve C19 are automatically closed, the water pump is connected with a peristaltic pump 24, the water pump 21, the water pump is controlled to reach the lowest concentration of the water concentration of a water pump, the water pump is controlled to reach the water concentration of a water pump 2, the water pump 2.5, the water concentration of the water pump 2.5, the water pump is controlled to reach the water concentration of the water mixing tank, the water pump 2.c 466, the water concentration of the water pump, the water pump is controlled to reach the water concentration of the water pump, the water pump 3, the water pump, the water concentration of the water pump, the water concentration of the water pump is controlled to reach the water concentration of the water pump, the water pump is controlled by the water pump, the water pump is controlled by the water pump.
Claims (6)
1. The automatic accurate ratio control system of sprinkling irrigation unit liquid manure, its characterized in that, including mixing fertile jar (6), fertile liquid bucket N (12), fertile liquid bucket P (14), fertile liquid bucket K (16), be equipped with concentration meter (9) in mixing fertile jar (6), install delivery port (5) and trunk line (20) on mixing fertile jar (6), install solenoid valve a (17) on fertile liquid bucket N (12), install solenoid valve b (18) on fertile liquid bucket P (14), install solenoid valve c (19) on fertile liquid bucket K (16), solenoid valve a (17), solenoid valve b (18), solenoid valve c (19) connect in parallel on the one end pipeline of peristaltic pump (21), the other end pipeline of peristaltic pump (21) with trunk line (20) intercommunication; the water outlet (5) is connected with the water inlet (3) through a water pump (4).
2. The automatic precise water-fertilizer ratio control system of the sprinkling irrigation unit as claimed in claim 1, wherein a liquid level meter d (7) is installed in the fertilizer mixing tank (6), a liquid level meter a (11) is installed in the fertilizer liquid barrel N (12), a liquid level meter b (13) is installed in the fertilizer liquid barrel P (14), and a liquid level meter c (15) is installed in the fertilizer liquid barrel K (16).
3. The automatic precise water and fertilizer ratio control system of the sprinkling irrigation unit as claimed in claim 2, wherein a connecting rod rotor (8) is arranged in the fertilizer mixing tank (6), and the connecting rod rotor (8) is connected with a fertilizer mixing motor (10) outside the fertilizer mixing tank (6) through a coupling.
4. The automatic precise water and fertilizer ratio control system of the sprinkling irrigation unit as claimed in claim 3, wherein the peristaltic pump (21) is further provided with an electromagnetic valve d (22) on a pipeline at one end connected in parallel with the electromagnetic valve a (17), the electromagnetic valve b (18) and the electromagnetic valve c (19), and a water and fertilizer outlet pipeline (23) is arranged at the other end of the electromagnetic valve d (22).
5. The automatic precise water and fertilizer ratio control system of the sprinkling irrigation unit according to claim 4, wherein the concentration meter (9), the solenoid valve a (17), the solenoid valve b (18), the solenoid valve c (19), the peristaltic pump (21), the liquid level meter d (7), the liquid level meter a (11), the liquid level meter b (13), the liquid level meter c (15), the fertilizer mixing motor (10), the solenoid valve d (22) and the water pump (4) are in signal connection with a control cabinet (24).
6. A control method of a sprinkling irrigation unit water and fertilizer automatic accurate proportioning control system mainly comprises the following steps:
inputting the proportion of nitrogen, phosphorus and potassium fertilizers, the concentration and the dosage of water and fertilizer on an operation interface of a controller, calculating the required water quantity and various fertilizer quantities after P L C receives information, and opening an electromagnetic valve a, an electromagnetic valve b and an electromagnetic valve C through a relay at an output port;
step two, after water and fertilizer liquid are added into a fertilizer mixing tank, a P L C controls a fertilizer mixing motor to rotate to drive a connecting rod rotor to stir, and meanwhile, a concentration meter in the fertilizer mixing tank transmits water and fertilizer concentration information to a P L C;
and step three, after full stirring, opening the electromagnetic valve d, simultaneously reversely rotating the peristaltic pump, pumping the mixed liquid fertilizer in the mixed fertilizer tank to a liquid fertilizer outlet pipeline, connecting spraying equipment or a pipeline through the pipeline to irrigate the liquid fertilizer to crops, in the process, acquiring real-time liquid level information of a liquid level meter d in the mixed fertilizer tank by the P L C control module, comparing the real-time liquid level information with a preset lower limit value, stopping the peristaltic pump if the liquid fertilizer reaches the lowest liquid level value, and finishing the work of the whole system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186111.1A CN111468031A (en) | 2020-03-17 | 2020-03-17 | Automatic and accurate water and fertilizer proportioning control system and control method for sprinkling irrigation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186111.1A CN111468031A (en) | 2020-03-17 | 2020-03-17 | Automatic and accurate water and fertilizer proportioning control system and control method for sprinkling irrigation unit |
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| Publication Number | Publication Date |
|---|---|
| CN111468031A true CN111468031A (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010186111.1A Pending CN111468031A (en) | 2020-03-17 | 2020-03-17 | Automatic and accurate water and fertilizer proportioning control system and control method for sprinkling irrigation unit |
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| CN (1) | CN111468031A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112273031A (en) * | 2020-10-30 | 2021-01-29 | 江苏大学 | Real-time fertilizer injection unit that mixes fertile notes based on peristaltic pump |
| CN112753549A (en) * | 2021-02-22 | 2021-05-07 | 中国农业科学院农田灌溉研究所 | High-uniformity reel type sprinkling irrigation device |
| CN113926374A (en) * | 2021-10-28 | 2022-01-14 | 河南牧原智能科技有限公司 | Device and system for automatically proportioning disinfectant in mixing tank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175872A (en) * | 1978-09-28 | 1979-11-27 | Primus David R | Method and means for agitating liquid manure |
| US20030052192A1 (en) * | 2001-09-18 | 2003-03-20 | Trent Kerr | Auto-care irrigation and conditioning system and method |
| CN205269515U (en) * | 2016-01-08 | 2016-06-01 | 钟晓玉 | Automatic mechanical stirring device that forestry was irrigated |
| CN206282125U (en) * | 2016-12-21 | 2017-06-27 | 河北润农节水科技股份有限公司 | A kind of fertilizer applicator automatic control system |
| CN108176343A (en) * | 2017-12-22 | 2018-06-19 | 上海大学 | A kind of reagent automatic preparing device |
-
2020
- 2020-03-17 CN CN202010186111.1A patent/CN111468031A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175872A (en) * | 1978-09-28 | 1979-11-27 | Primus David R | Method and means for agitating liquid manure |
| US20030052192A1 (en) * | 2001-09-18 | 2003-03-20 | Trent Kerr | Auto-care irrigation and conditioning system and method |
| CN205269515U (en) * | 2016-01-08 | 2016-06-01 | 钟晓玉 | Automatic mechanical stirring device that forestry was irrigated |
| CN206282125U (en) * | 2016-12-21 | 2017-06-27 | 河北润农节水科技股份有限公司 | A kind of fertilizer applicator automatic control system |
| CN108176343A (en) * | 2017-12-22 | 2018-06-19 | 上海大学 | A kind of reagent automatic preparing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112273031A (en) * | 2020-10-30 | 2021-01-29 | 江苏大学 | Real-time fertilizer injection unit that mixes fertile notes based on peristaltic pump |
| CN112753549A (en) * | 2021-02-22 | 2021-05-07 | 中国农业科学院农田灌溉研究所 | High-uniformity reel type sprinkling irrigation device |
| CN113926374A (en) * | 2021-10-28 | 2022-01-14 | 河南牧原智能科技有限公司 | Device and system for automatically proportioning disinfectant in mixing tank |
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Application publication date: 20200731 |