CN114797603A - Automatic solid-liquid fertilizer preparation system based on PLC - Google Patents
Automatic solid-liquid fertilizer preparation system based on PLC Download PDFInfo
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- CN114797603A CN114797603A CN202210285010.9A CN202210285010A CN114797603A CN 114797603 A CN114797603 A CN 114797603A CN 202210285010 A CN202210285010 A CN 202210285010A CN 114797603 A CN114797603 A CN 114797603A
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- 239000007788 liquid Substances 0.000 title claims abstract description 64
- 239000003337 fertilizer Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000005303 weighing Methods 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 60
- 238000002156 mixing Methods 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000005507 spraying Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 10
- 239000004615 ingredient Substances 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 239000000575 pesticide Substances 0.000 claims description 5
- 230000002452 interceptive effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000013329 compounding Methods 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract description 3
- 238000009795 derivation Methods 0.000 abstract 1
- 241000209094 Oryza Species 0.000 description 6
- 235000007164 Oryza sativa Nutrition 0.000 description 6
- 235000009566 rice Nutrition 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- IXVMHGVQKLDRKH-VRESXRICSA-N Brassinolide Natural products O=C1OC[C@@H]2[C@@H]3[C@@](C)([C@H]([C@@H]([C@@H](O)[C@H](O)[C@H](C(C)C)C)C)CC3)CC[C@@H]2[C@]2(C)[C@@H]1C[C@H](O)[C@H](O)C2 IXVMHGVQKLDRKH-VRESXRICSA-N 0.000 description 1
- 238000012300 Sequence Analysis Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- IXVMHGVQKLDRKH-KNBKMWSGSA-N brassinolide Chemical compound C1OC(=O)[C@H]2C[C@H](O)[C@H](O)C[C@]2(C)[C@H]2CC[C@]3(C)[C@@H]([C@H](C)[C@@H](O)[C@H](O)[C@@H](C)C(C)C)CC[C@H]3[C@@H]21 IXVMHGVQKLDRKH-KNBKMWSGSA-N 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of agricultural fertilizer preparation devices, and particularly relates to a PLC-based automatic solid-liquid fertilizer preparation system which comprises a control host and a preparation mechanism, wherein the preparation mechanism is connected with a batching controller, the preparation mechanism comprises a mixing tank, a weighing tank, a water inlet pipe, a liquid outlet pipe and a gas stirring mechanism, and the batching controller receives real-time information detected by a weighing sensor and a flowmeter and sends the information to the control host; the batching controller sends control instructions to the water pump and the electromagnetic valve. Compared with the prior art, the invention has the following advantages: the preparation mechanism has a simple and reasonable structure, can automatically measure the raw materials entering the mixing tank, and performs material mixing according to the technical scheme; stirring speed is soft, is difficult to froth, and convenient the derivation reduces the residue in the compounding jar, improves the medicine utilization ratio, and application scope is wide, avoids the error that appears easily among the manual operation, improves work efficiency.
Description
Technical Field
The invention belongs to the technical field of agricultural fertilizer preparation devices, and particularly relates to a PLC-based automatic solid-liquid fertilizer preparation system.
Background
The fertilizer types needed by crops in different growth stages, different planting areas and different varieties are different, the fertilizer dosage in the full-length period is matched with the growth and development rules, the temperature is one of the important conditions of plant growth, if the temperature is too high, the physiological and biochemical reactions of the crops are influenced to be accelerated, the growth and development of the crops are retarded due to the reduction of the temperature, and when the environmental temperature continuously exceeds the adaptive temperature of the crops, the influence caused by high temperature or low temperature needs to be avoided through manual intervention; for example, rice is easy to experience high-temperature weather from a jointing stage to a heading and flowering stage, monopotassium phosphate or rice iron stalk big drum grains and brassinolide boron fertilizer need to be sprayed on the liquid surface to improve the stress resistance of the rice, in the prior art, the leaf surface fertilizer needs to be sprayed after being mixed after being weighed manually, and compared with common fertilizers, the leaf surface fertilizer used in the stage has relatively small dosage, so that a special dosing device is not needed, and the dosing process needs to consume long time and consumes manpower.
Disclosure of Invention
The invention aims to provide a PLC-based automatic solid-liquid fertilizer preparation system, aiming at the problems that the conventional proportioning device has large specification, is not suitable for small amount of proportioning and is easy to cause errors due to manual operation in the proportioning process.
The invention is realized by the following technical scheme: a PLC-based automatic solid-liquid fertilizer preparation system comprises a control host and a preparation mechanism, wherein the preparation mechanism is connected with a batching controller, the control host comprises an interactive display screen and a PLC mainboard, and the PLC mainboard is used for performing logic operation and sending a control instruction to the batching controller;
the preparation mechanism comprises a mixing tank, a material weighing tank, a water inlet pipe, a liquid outlet pipe and a gas stirring mechanism, wherein the material weighing tank is provided with a feeding connecting pipe and a discharging pipe, and the feeding connecting pipe is detachably connected with a leading-in pipe of the material storage mechanism; the material weighing tank is fixed with the top surface of the material mixing tank through a weighing sensor, the gas stirring mechanism comprises a gas inlet pipe, and a water pump is arranged on the liquid outlet pipe; the mixing tank is used for mixing ingredients with water, the weighing tank is used for weighing ingredients, and the gas stirring mechanism is used for uniformly stirring the mixed ingredients; a flowmeter is arranged in the water inlet pipe, and electromagnetic valves are respectively arranged on the feeding connecting pipe, the discharging pipe, the water inlet pipe, the liquid outlet pipe and the air inlet pipe;
the batching controller receives real-time information detected by the weighing sensor and the flowmeter and sends the information to the control host; the batching controller sends control instructions to the water pump and the electromagnetic valve.
Specifically, compounding tank deck portion is equipped with the feeding and takes over, and the feeding is taken over and is connected the title material jar after running through compounding tank deck portion, and it is fixed with compounding jar top surface that the title material jar passes through weighing sensor, and the feeding is taken over and is not connected with compounding tank deck portion.
Specifically, the mixing tank is connected with an air inlet pipe, and the air inlet pipe is rotatably connected with an air distribution mechanism through a connector; the gas distribution mechanism comprises a disc base, and the disc base can freely rotate around the connecting head; a plurality of groups of vertical air outlet pipes are uniformly distributed on the disc base according to a circular array, and a plurality of air outlet heads are longitudinally distributed on the side surface of the vertical air outlet pipe in the anticlockwise direction; the air outlet vertical pipe and the disc base are communicated with the air inlet pipe; the air inlet pipe is provided with a pressure regulating valve and is connected with a gas making device; the gas outlet head is of a one-way opening structure, so that water or mixed liquid is prevented from flowing backwards into the gas distribution mechanism.
The utility model provides an automatic system of preparing of solid-liquid fertilizer based on PLC, wherein the PLC mainboard is according to the real-time data that programmed sequence analysis operation received detection device and weighing sensor, flowmeter detected, and rethread batch controller transmits the instruction to water pump, solenoid valve, and its working process includes following content:
(1) inputting position information, crop information, farmland specification information and raw material inventory information in a fertilizer preparation system, and controlling a host machine to be in a standby state, wherein the initial states of all electromagnetic valves are closed states;
(2) the method comprises the following steps that a detection device is arranged in a farmland, the detection device comprises a temperature sensor and a positioning sensor, the temperature sensor is connected with a control terminal, when the control terminal judges that the temperature is higher than a preset value, an early warning signal is sent to a control host, the control host automatically acquires the early warning signal, and a fertilizer preparation system outputs a plurality of batching schemes;
(3) a worker selects a batching scheme, communicates the inlet pipe of the relevant raw material in the batching scheme with the feeding connecting pipe, and starts batching;
(4) the electromagnetic valve on the feeding connecting pipe is opened, in the feeding process, the weighing sensor of each material weighing tank respectively detects a weighing real-time signal, and when the weight in the material weighing tank reaches a numerical value in the batching scheme, the electromagnetic valve on the feeding connecting pipe is closed; when the raw materials in the material weighing tank reach the preset weight in the batching scheme, opening an electromagnetic valve on the discharging pipe, and closing the electromagnetic valve on the discharging pipe after the feeding is finished;
(5) opening an electromagnetic valve on the water inlet pipe, and closing the electromagnetic valve on the water inlet pipe when the flow information fed back by the flowmeter reaches a numerical value in the batching scheme;
(6) opening an electromagnetic valve on the air inlet pipe, and rotating the disc base counterclockwise under the reaction of gas sprayed out of the air outlet head;
(7) after stirring for a set time, closing the electromagnetic valve on the air inlet pipe;
(8) connecting a feed pipe of the pesticide spraying tank with a liquid outlet pipe, starting a water pump after opening an electromagnetic valve on the liquid outlet pipe, and sequentially closing the water pump and the electromagnetic valve on the liquid outlet pipe after finishing the operation;
(9) spraying liquid fertilizer to crops according to a batching scheme.
Specifically, the multiple batching schemes are arranged according to effect priority, and meanwhile, the interactive display screen displays the corresponding storage amount in the material storing mechanism.
Considering that part of raw materials can be dissolved in warm water or hot water, the water inlet pipe is connected with a water inlet branch pipe in parallel, and the water inlet branch pipe is provided with an electric heating device; the working state of the electric heating device is controlled by the batching controller; and (5) starting the electromagnetic valves on the water inlet branch pipes, starting the electric heating device at the same time, and sequentially closing the electric heating device and the electromagnetic valves on the water inlet branch pipes when the flow information fed back by the flow meter reaches the numerical value in the batching scheme.
Compared with the prior art, the invention has the following advantages: the preparation mechanism has a simple and reasonable structure, realizes automatic metering of raw materials entering the mixing tank based on the PLC main board, and performs material proportioning and mixing according to the technical scheme; compared with a gas stirring mechanism, the stirring speed is softer, the foaming is not easy to occur, the guiding is convenient, the residue in the mixing tank is reduced, and the utilization rate of the medicine is improved; meanwhile, the working efficiency of the stirring motor in the conventional technology is prevented from being easily influenced by high temperature under the high-temperature condition; the gas stirring mechanism is arranged at the bottom of the mixing tank, so that materials to be mixed are conveniently and uniformly stirred no matter how much materials are required to be mixed;
the application range is wide, and the dissolving conditions can be adjusted according to actual needs, including the temperature of the dissolving water, the feeding sequence of the dissolving raw materials and the like;
through setting up control host computer and fertilizer and preparing the system, combine crops self characteristics, geographical position and weather conditions to give fertilizer and prepare the scheme, degree of automation is high, guides the staff to put through and prepares the mechanism and carry out automatic blending, and the beginner is easy to operate, after the batching is accomplished carry out the spraying according to the scheme can, the error of avoiding appearing easily among the manual operation improves work efficiency.
Drawings
FIG. 1 is a schematic view of the dispensing mechanism.
FIG. 2 is a cross-sectional view of a dispensing mechanism.
Fig. 3 is a schematic structural view of the gas distributing mechanism.
Fig. 4 is a working principle diagram of the present invention.
The automatic mixing device comprises a material mixing tank 1, a material feeding connecting pipe 2, a material weighing tank 3, a material discharging pipe 31, a material discharging electromagnetic valve 32, a weighing sensor 33, a water inlet pipe 4, a water inlet branch pipe 41, an electric heating device 42, a water inlet branch pipe electromagnetic valve 43, a water inlet electromagnetic valve 44, a gas inlet pipe 5, a pressure regulating valve 51, a gas inlet electromagnetic valve 52, a connector 53, a liquid outlet pipe 6, a water pump 61, a liquid outlet connector 62, a liquid outlet electromagnetic valve 63, a disc base 7, a gas outlet vertical pipe 71 and a gas outlet head 72.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 4, the automatic solid-liquid fertilizer preparation system based on the PLC is mainly used for preparing liquid fertilizers with relatively less used materials, such as foliar fertilizers and the like, and comprises a control host and a preparation mechanism, wherein the preparation mechanism is connected with a batching controller, the control host comprises an interactive display screen and a PLC mainboard, and the PLC mainboard is used for performing logic operation and sending a control instruction to the batching controller;
example 1
As shown in fig. 1-3, the preparation mechanism comprises a mixing tank 1, a weighing tank 3, a water inlet pipe 4, a liquid outlet pipe 6 and a gas stirring mechanism; the mixing tank is used for mixing ingredients with water, the weighing tank is used for weighing ingredients, and the gas stirring mechanism is used for uniformly stirring the mixed ingredients;
the top of the material mixing tank is provided with a feeding connecting pipe, the feeding connecting pipe 2 penetrates through the top of the material mixing tank 1 and then is connected with the material weighing tank 3 through a connecting pipe 21, a feeding electromagnetic valve 22 is arranged on the connecting pipe 21, the material weighing tank 3 is fixed with the top surface of the material mixing tank 1 through a weighing sensor 33, the feeding connecting pipe 2 is not connected with the top of the material mixing tank 1, the bottom of the material weighing tank 3 is connected with a discharge pipe 31, and a discharge electromagnetic valve 32 is arranged on the discharge pipe;
the feeding connecting pipe 2 is detachably connected with an inlet pipe of a material storage mechanism, the material storage mechanism comprises a plurality of material tanks, and the material storage mechanism guides materials into the feeding connecting pipe through a pneumatic inlet mechanism (which is a conventional technology in the field and is not shown here);
the water inlet pipe 4 is provided with a water inlet electromagnetic valve 44, and the water inlet pipe 4 is provided with a flowmeter (which is a conventional technology in the field and is not shown);
the mixing tank 1 is connected with an air inlet pipe 5, the air inlet pipe 5 is rotatably connected with an air distribution mechanism through a connector 53, the air stirring mechanism comprises a disc base 7, and the disc base 7 can freely rotate around the connector 53; 4 groups of vertical gas outlet pipes 71 are uniformly distributed on the disc base 7 according to a circular array, and each group comprises 2 vertical gas outlet pipes 71; 7 gas outlets 72 are longitudinally distributed on the side surface of the gas outlet vertical pipe 71 in the counterclockwise direction, and the gas outlets 72 are of a one-way opening structure, so that water or mixed liquid is prevented from flowing backwards into the gas distribution mechanism; the air outlet vertical pipe 71 and the disc base 7 are communicated with an air inlet pipe 5, and the air inlet pipe 5 is connected with a gas making device; the air inlet pipe 5 penetrates through the mixing tank, and a pressure regulating valve 51 and an air inlet electromagnetic valve 52 are arranged on the air inlet pipe 5;
the mixing tank 1 is communicated with a liquid outlet pipe 6, a water pump 61 is arranged on the liquid outlet pipe 6, a liquid outlet electromagnetic valve 63 is arranged on the liquid outlet pipe 6 between the water pump 61 and the mixing tank 1, a liquid outlet connector 62 is arranged at the tail end of the liquid outlet pipe 6, and the liquid outlet connector 62 is connected with a feeding pipe for spraying a foliar fertilizer medicine tank;
the batching controller receives real-time information detected by the weighing sensor 33 and the flowmeter and sends the information to the control host; the batching controller sends control instructions to the water pump 61 and the electromagnetic valve.
In this embodiment, the paddy field is used as an experimental object, and the working process of the automatic solid-liquid fertilizer preparation system based on the PLC includes the following contents:
(1) inputting position information, rice information, farmland specification information and raw material inventory information in a fertilizer preparation system, and controlling a host machine to be in a standby state, wherein the initial states of all electromagnetic valves are closed states;
(2) the method comprises the following steps that a detection device is arranged in a farmland, the detection device comprises a temperature sensor and a positioning sensor, the temperature sensor is connected with a control terminal, the control terminal is connected with a control host through wireless communication, when the control terminal judges that the temperature is higher than a preset value of 35 ℃, an early warning signal is sent to the control host, the control host automatically acquires the early warning signal, and a fertilizer preparation system outputs a plurality of batching schemes;
(3) the staff selects the batching scheme, and the leading-in pipe of the relevant raw material in the batching scheme is communicated with the feeding connecting pipe 2, and the batching is started;
(4) the feeding electromagnetic valve 22 is opened, in the feeding process, the weighing sensor 33 of each material weighing tank 3 respectively detects weighing real-time signals, and when the weight in the material weighing tank 3 reaches the value in the batching scheme, the feeding electromagnetic valve 22 is closed;
when the raw materials in the material weighing tank 3 in the batching scheme reach the preset weight, the discharging electromagnetic valve 32 is opened, and the discharging electromagnetic valve 32 is closed after the material feeding is finished (whether the material feeding is finished or not is judged by a real-time signal detected by the weighing sensor 33);
(5) the water inlet electromagnetic valve 44 is opened, and when the flow information fed back by the flowmeter reaches the numerical value in the batching scheme, the water inlet electromagnetic valve 44 is closed;
(6) the air inlet electromagnetic valve 52 is opened, and the disc base 7 rotates anticlockwise under the reaction of the gas sprayed from the gas outlet head 72;
(7) after the stirring is carried out for the set time, the air inlet electromagnetic valve 52 is closed;
(8) connecting a feed pipe of a pesticide spraying tank (used for spraying foliar fertilizer) with the liquid outlet pipe 6, starting the liquid outlet electromagnetic valve 63, starting the water pump 61, and sequentially closing the water pump 61 and the liquid outlet electromagnetic valve 63 after the liquid outlet electromagnetic valve 63 is started;
(9) spraying liquid fertilizer to crops according to a batching scheme.
The working principle is that the material weighing sensor 33 is connected to the material weighing tank 3, so that real-time weight information of the material in the material weighing tank 3 can be conveniently detected and fed back to the control host computer for judging whether the set requirement is met, and even if the feeding sensor 33 is closed, the material weighing accuracy is ensured;
the structure of the gas stirring mechanism is reasonably arranged, so that the disc base 7 rotates anticlockwise under the reaction of the sprayed gas, the mixed material is stirred, the regulation of the pressure of the entering gas is realized through the regulating pressure regulating valve 51, and the stirring speed of the disc base is regulated.
Example 2
In the leaf fertilizer, borax which is a common raw material is slowly dissolved in cold water and generally needs to be dissolved in warm water at 45 ℃, so that a water inlet branch pipe 41 is connected in parallel to a water inlet pipe 4, an electric heating device 42 is arranged on the water inlet branch pipe 41, and a water inlet branch pipe electromagnetic valve 43 is arranged on the water inlet branch pipe;
the water inlet branch pipe electromagnetic valve 43 and the water inlet electromagnetic valve 44 can be started up by only one at most.
The working process of the PLC-based automatic solid-liquid fertilizer preparation system comprises the following contents:
(1) inputting position information, rice information, farmland specification information and raw material inventory information in a fertilizer preparation system, and controlling a host machine to be in a standby state, wherein the initial states of all electromagnetic valves are closed states;
(2) the method comprises the following steps that a detection device is arranged in a farmland, the detection device comprises a temperature sensor and a positioning sensor, the temperature sensor is connected with a control terminal, the control terminal is connected with a control host through wireless communication, when the control terminal judges that the temperature is higher than a preset value of 35 ℃, an early warning signal is sent to the control host, the control host automatically acquires the early warning signal, and a fertilizer preparation system outputs a plurality of batching schemes;
(3) a worker selects a batching scheme, and communicates the inlet pipe of the relevant raw material in the batching scheme with the feeding connecting pipe 2 to start batching;
(4) the feeding electromagnetic valve 22 is opened, in the feeding process, the weighing sensor 33 of each material weighing tank 3 respectively detects weighing real-time signals, and when the weight in the material weighing tank 3 reaches the value in the batching scheme, the feeding electromagnetic valve 22 is closed;
when the raw materials in the material weighing tank 3 in the batching scheme reach the preset weight, the discharging electromagnetic valve 32 is opened, and the discharging electromagnetic valve 32 is closed after the material feeding is finished (whether the material feeding is finished or not is judged by a real-time signal detected by the weighing sensor 33);
(5) the electromagnetic valve 43 of the water inlet branch pipe is opened, and when the flow information fed back by the flowmeter reaches the numerical value in the batching scheme, the electromagnetic valve 43 of the water inlet branch pipe is closed;
(6) the air inlet electromagnetic valve 52 is opened, and the disc base 7 rotates anticlockwise under the reaction of the gas sprayed from the gas outlet head 72;
(7) after the stirring is carried out for the set time, the air inlet electromagnetic valve 52 is closed;
(8) connecting a feed pipe of the pesticide spraying tank with the liquid outlet pipe 6, starting the liquid outlet electromagnetic valve 63, starting the water pump 61, and sequentially closing the water pump and the liquid outlet electromagnetic valve after the completion;
(9) spraying liquid fertilizer to crops according to a batching scheme.
Example 3
Considering that part of the liquid fertilizer needs to dissolve part of the solid raw materials firstly and then dissolve other solid raw materials, the working process of the PLC-based automatic solid-liquid fertilizer preparation system comprises the following contents:
(1) inputting position information, rice information, farmland specification information and raw material inventory information in a fertilizer preparation system, and controlling a host machine to be in a standby state, wherein the initial states of all electromagnetic valves are closed states;
(2) the method comprises the following steps that a detection device is arranged in a farmland, the detection device comprises a temperature sensor and a positioning sensor, the temperature sensor is connected with a control terminal, the control terminal is connected with a control host through wireless communication, when the control terminal judges that the temperature is higher than a preset value of 35 ℃, an early warning signal is sent to the control host, the control host automatically acquires the early warning signal, and a fertilizer preparation system outputs a plurality of batching schemes;
(3) the staff selects the batching scheme, and the leading-in pipe of the relevant raw material in the batching scheme is communicated with the feeding connecting pipe 2, and the batching is started;
(4) the feeding electromagnetic valve 22 is opened, the weighing sensor 33 of each material weighing tank 3 respectively detects weighing real-time signals in the feeding process, and when the weight in the material weighing tank 3 reaches the value in the batching scheme, the corresponding feeding electromagnetic valve 22 is closed;
(5) when the raw materials in the material weighing tank 3 in the batching scheme reach the preset weight, a first discharging electromagnetic valve (raw materials needing preliminary dissolution) is opened, and the first discharging electromagnetic valve is closed after the feeding is finished;
(6) the electromagnetic valve 43 of the water inlet branch pipe is opened, and when the flow information fed back by the flowmeter reaches the numerical value in the batching scheme, the electromagnetic valve 43 of the water inlet branch pipe is closed;
(7) the air inlet electromagnetic valve 52 is opened, and the disc base 7 rotates anticlockwise under the reaction of the gas sprayed from the gas outlet head 72;
(8) after the stirring is carried out for the first time, a second discharging electromagnetic valve (raw materials needing subsequent dissolution) is opened, and the second discharging electromagnetic valve is closed after the feeding is finished;
(9) after the stirring is carried out for the second set time, the air inlet electromagnetic valve 52 is closed;
(10) connecting a feed pipe of the pesticide spraying tank with the liquid outlet pipe 6, starting the liquid outlet electromagnetic valve 63, starting the water pump 61, and sequentially closing the water pump and the liquid outlet electromagnetic valve after the completion;
(11) spraying liquid fertilizer to crops according to a batching scheme.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A PLC-based automatic solid-liquid fertilizer preparation system comprises a control host and a preparation mechanism, and is characterized in that the preparation mechanism is connected with a batching controller, the control host comprises an interactive display screen and a PLC mainboard, and the PLC mainboard is used for performing logic operation and sending a control instruction to the batching controller;
the preparation mechanism comprises a mixing tank, a material weighing tank, a water inlet pipe, a liquid outlet pipe and a gas stirring mechanism, wherein the material weighing tank is provided with a feeding connecting pipe and a discharging pipe, and the feeding connecting pipe is detachably connected with a leading-in pipe of the material storage mechanism; the material weighing tank is fixed with the top surface of the material mixing tank through a weighing sensor, the gas stirring mechanism comprises a gas inlet pipe, and a water pump is arranged on the liquid outlet pipe; the mixing tank is used for mixing ingredients with water, the weighing tank is used for weighing ingredients, and the gas stirring mechanism is used for uniformly stirring the mixed ingredients; a flowmeter is arranged in the water inlet pipe, and electromagnetic valves are respectively arranged on the feeding connecting pipe, the discharging pipe, the water inlet pipe, the liquid outlet pipe and the air inlet pipe;
the batching controller receives real-time information detected by the weighing sensor and the flowmeter and sends the information to the control host; the batching controller sends control instructions to the water pump and the electromagnetic valve.
2. The PLC-based automatic solid-liquid fertilizer preparation system as claimed in claim 1, wherein a feeding connection pipe is arranged at the top of the mixing tank, the feeding connection pipe penetrates through the top of the mixing tank and then is connected with a weighing tank, and the weighing tank is fixed to the top surface of the mixing tank through a weighing sensor.
3. The PLC-based automatic solid-liquid fertilizer preparation system according to claim 1, wherein the mixing tank is connected with an air inlet pipe, and the air inlet pipe is rotatably connected with the gas distribution mechanism through a connector; the gas distribution mechanism comprises a disc base, and the disc base can freely rotate around the connecting head; a plurality of groups of vertical air outlet pipes are uniformly distributed on the disc base according to a circular array, and a plurality of air outlet heads are longitudinally distributed on the side surface of the vertical air outlet pipe in the anticlockwise direction; the air outlet vertical pipe and the disc base are communicated with the air inlet pipe.
4. The PLC-based automatic solid-liquid fertilizer preparation system according to claim 3, wherein the gas inlet pipe is provided with a pressure regulating valve and is connected with a gas production device.
5. The PLC-based automatic solid-liquid fertilizer preparation system of claim 3, wherein the gas outlet head is of a one-way open structure.
6. The PLC-based automatic solid-liquid fertilizer preparation system according to claim 3, wherein the working process comprises the following steps:
(1) inputting position information, crop information, farmland specification information and raw material inventory information in a fertilizer preparation system, and controlling a host machine to be in a standby state, wherein the initial states of all electromagnetic valves are closed states;
(2) the method comprises the following steps that a detection device is arranged in a farmland, the detection device comprises a temperature sensor and a positioning sensor, the temperature sensor is connected with a control terminal, when the control terminal judges that the temperature is higher than a preset value, an early warning signal is sent to a control host, the control host automatically acquires the early warning signal, and a fertilizer preparation system outputs a plurality of batching schemes;
(3) a worker selects a batching scheme, communicates the inlet pipe of the relevant raw material in the batching scheme with the feeding connecting pipe, and starts batching;
(4) the electromagnetic valve on the feeding connecting pipe is opened, in the feeding process, the weighing sensor of each material weighing tank respectively detects a weighing real-time signal, and when the weight in the material weighing tank reaches a numerical value in the batching scheme, the electromagnetic valve on the feeding connecting pipe is closed; when the raw materials in the material weighing tank reach the preset weight in the batching scheme, opening an electromagnetic valve on the discharging pipe, and closing the electromagnetic valve on the discharging pipe after the feeding is finished;
(5) opening an electromagnetic valve on the water inlet pipe, and closing the electromagnetic valve on the water inlet pipe when the flow information fed back by the flowmeter reaches a numerical value in the batching scheme;
(6) an electromagnetic valve on the air inlet pipe is opened, and the disc base rotates anticlockwise under the reaction of gas sprayed out of the air outlet head;
(7) after stirring for a set time, closing the electromagnetic valve on the air inlet pipe;
(8) connecting a feed pipe of the pesticide spraying tank with a liquid outlet pipe, starting a water pump after opening an electromagnetic valve on the liquid outlet pipe, and sequentially closing the water pump and the electromagnetic valve on the liquid outlet pipe after finishing the operation;
(9) spraying liquid fertilizer to crops according to a batching scheme.
7. The PLC-based automatic solid-liquid fertilizer dispensing system of claim 6 wherein the plurality of dosing schedules are prioritized for effect.
8. The PLC-based automatic solid-liquid fertilizer preparation system according to claim 6, wherein a water inlet branch pipe is connected in parallel to the water inlet pipe, and an electric heating device is arranged on the water inlet branch pipe; the electric heating device is controlled by the batching controller to work.
9. The PLC-based automatic solid-liquid fertilizer preparation system according to claim 8, wherein in step (5), the electromagnetic valves on the water inlet branch pipes are opened, the electric heating device is started simultaneously, and when the flow rate information fed back by the flow meter reaches the value in the batching scheme, the electromagnetic valves on the electric heating device and the water inlet branch pipes are closed in sequence.
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Application publication date: 20220729 |