CN212728038U - Sprinkler liquid supply system with integrated functions of accumulated liquid supply and liquid manure - Google Patents
Sprinkler liquid supply system with integrated functions of accumulated liquid supply and liquid manure Download PDFInfo
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- CN212728038U CN212728038U CN202020704779.6U CN202020704779U CN212728038U CN 212728038 U CN212728038 U CN 212728038U CN 202020704779 U CN202020704779 U CN 202020704779U CN 212728038 U CN212728038 U CN 212728038U
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- 239000007788 liquid Substances 0.000 title claims abstract description 103
- 210000003608 fece Anatomy 0.000 title claims abstract description 11
- 239000010871 livestock manure Substances 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 246
- 239000003337 fertilizer Substances 0.000 claims abstract description 226
- 238000003860 storage Methods 0.000 claims abstract description 65
- 230000001105 regulatory effect Effects 0.000 claims abstract description 53
- 238000002360 preparation method Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims description 6
- 238000003973 irrigation Methods 0.000 description 24
- 230000002262 irrigation Effects 0.000 description 24
- 239000007787 solid Substances 0.000 description 15
- 239000003621 irrigation water Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 230000010354 integration Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000004720 fertilization Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Abstract
The utility model discloses a liquid supply system of a sprinkler with integrated functions of gathering liquid supply and liquid manure, which comprises a water source, a fertilizer storage barrel, a water supply branch, a fertilizer making branch, a gathering pipeline, a main pipeline and a controller; the water source is communicated with the gathering pipeline through the water supply branch, the fertilizer storage barrel is communicated with the gathering pipeline through the fertilizer supply branch, and the fertilizer storage barrel is communicated with the main pipeline through the fertilizer preparation branch; the water supply branch is sequentially provided with a first filter, a first water pump, an electric regulating valve, a pressure transmitter and a first check valve, and an input port of the first filter is connected with a water source; the fertilizer supply branch is sequentially provided with a second filter, a metering pump, a first electromagnetic flowmeter and a second check valve; a second electromagnetic flowmeter and an electromagnetic valve are sequentially arranged on the fertilizer making branch, and the electromagnetic valve is connected with the main pipeline; a second electromagnetic flowmeter is arranged on the main pipeline; the controller is respectively connected with the electric regulating valve, the first electromagnetic flowmeter, the second electromagnetic flowmeter, the pressure transmitter and the electromagnetic valve.
Description
Technical Field
The utility model relates to an irrigate water supply system technical field, especially relate to a possess and gather sprinkling irrigation machine liquid supply system who supplies liquid and integrative function of liquid manure.
Background
The fresh water resources in China are scarce, water is saved, and especially agricultural water has extremely important significance for the reasonable utilization of the water resources in China. In the prior art, a sprinkler water supply system generally adopts a single water pipe to connect a single water source for supplying water. For a sprinkling irrigation system which needs to irrigate a large-area farmland, the water demand is very large, and if water is taken from a pond with small water storage amount, the pond water can be rapidly consumed and even dried; if water is taken from a well, shallow groundwater cannot meet the requirement of water supply amount easily, a deeper well is often required to be drilled, and when the depth of the well exceeds a certain limit, the environmental protection requirement and laws and regulations are impacted.
The integration of water and fertilizer is to use pressure system (or natural fall of terrain) to make soluble solid or liquid fertilizer and irrigation water into fertilizer liquid to irrigate plants according to the content of soil nutrients and the fertilizer requirement rule and characteristics of crop species. In the prior art, a water and fertilizer integration technology for large-area land is relatively perfect, but for some smaller-area lands, manual fertilization is mainly used at present, the working strength is high and uneven, and the cost is too high if a complete water and fertilizer integration system is configured.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model provides a possess and gather sprinkling irrigation machine solution feed system who supplies liquid and integrative function of liquid manure.
In order to realize the utility model discloses an aim at, provide a possess and gather sprinkling irrigation machine liquid supply system who supplies liquid and integrative function of liquid manure, include following step:
comprises a water source, a fertilizer storage barrel, a water supply branch, a fertilizer preparation branch, a gathering pipeline, a main pipeline and a controller;
the water source is communicated with the gathering pipeline through a water supply branch, the fertilizer storage barrel is communicated with the gathering pipeline through a fertilizer supply branch, the fertilizer storage barrel is communicated with the main pipeline through a fertilizer preparation branch, and the gathering pipeline is communicated with the main pipeline;
the water supply branch is sequentially provided with a first filter, a first water pump, an electric regulating valve, a pressure transmitter and a first check valve, and an input port of the first filter is connected with the water source; a second filter, a metering pump, a first electromagnetic flowmeter and a second check valve are sequentially arranged on the fertilizer supply branch, and an input port of the second filter is connected with the fertilizer storage barrel; a second electromagnetic flowmeter and an electromagnetic valve are sequentially arranged on the fertilizer making branch, and the electromagnetic valve is connected with the main pipeline; a second electromagnetic flowmeter is arranged on the main pipeline;
the controller is respectively connected with the electric control valve, the first electromagnetic flowmeter, the second electromagnetic flowmeter, the pressure transmitter and the electromagnetic valve.
In one embodiment, the controller employs a PLC.
In one embodiment, the fertilizer storage barrel stirs the fertilizer liquid prepared in proportion and conveys the stirred fertilizer liquid to the main pipeline.
In one embodiment, the metering pump is a plunger type metering pump.
In one embodiment, the water supply branch comprises a plurality of water supply branches, and each water supply branch is connected with a water source.
The controller can obtain irrigation water flow, water and fertilizer proportion and discharge capacity of the metering pump required by the sprinkling irrigation of the time input by a worker, the electric regulating valve is regulated to the minimum opening degree, the first water pump is started, the controller can also regulate the opening degree of the electric regulating valve according to the value of the pressure transmitter, on the premise of ensuring the stable flow of the main pipeline, the pressure difference when the water supply branch branches converge into the gathering pipeline is smaller, after the pressure of the pressure transmitter is stabilized, the worker adds solid fertilizer into the fertilizer storage barrel and inputs the weight of the added fertilizer into the controller, the controller calculates the amount of water required by the fertilizer liquid configuration according to the set irrigation water flow, the weight of the added solid fertilizer, the discharge capacity of the metering pump and the set water and fertilizer proportion, the controller can also control the solenoid valve to open, and calculates the amount of water flowing into the fertilizer storage barrel according to the water flow information of the fertilizer preparation branch detected by the first electromagnetic flowmeter, when the water amount flowing into the fertilizer storage barrel reaches a required value, the controller controls the electromagnetic valve to be closed; starting a metering pump, and when the flow of the main pipeline is insufficient, increasing the flow of the main pipeline by increasing the opening of an electric regulating valve by a controller; when the main pipeline flow is too big, the electric control valve is reversely adjusted to reduce the flow, when the water source water storage quantity is insufficient, the pressure in the water supply branch is controlled to be reduced, the controller controls the opening degree of the electric control valve on the water supply branch to be reduced until the electric control valve is closed, and controls the opening degree of the electric control valve in the other water supply branch to be increased, so that smooth water supply is realized, the water and fertilizer integration of the liquid supply system of the sprinkler is realized, the cost of the water and fertilizer integration system with complete configuration is reduced, and the working strength of the fertilization and irrigation operation is simplified.
Drawings
FIG. 1 is a schematic structural diagram of a liquid supply system of a sprinkler with integrated functions of accumulated liquid supply and water and fertilizer according to an embodiment;
FIG. 2 is a circuit schematic of an embodiment;
FIG. 3 is a schematic diagram of a setup environment for a controller, according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a liquid supply system of a sprinkler with integrated functions of gathering liquid supply and liquid manure, which includes a water source 11, a fertilizer storage barrel 12, a water supply branch 20, a fertilizer supply branch 30, a fertilizer making branch 40, a gathering pipeline 13, a main pipeline 50 and a controller (not shown in fig. 1);
the water source 11 is respectively communicated with a gathering pipeline 13 through a water supply branch 20, the fertilizer storage barrel 12 is communicated with the gathering pipeline 13 through a fertilizer supply branch 30, the fertilizer storage barrel 12 is communicated with a main pipeline 50 through a fertilizer preparation branch 40, and the gathering pipeline 13 is communicated with the main pipeline 50;
the water supply branch is sequentially provided with a first filter 21, a first water pump 22, an electric regulating valve 23, a pressure transmitter 24 and a first check valve 25, and an input port of the first filter 21 is connected with the water source 11; the fertilizer supply branch 30 is sequentially provided with a second filter 31, a metering pump 32, a first electromagnetic flow meter 33 and a second check valve 34, and an input port of the second filter 31 is connected with the fertilizer storage barrel 12; a second electromagnetic flowmeter 41 and an electromagnetic valve 42 are sequentially arranged on the fertilizer preparation branch 40, and the electromagnetic valve 42 is connected with the main pipeline 50; a second electromagnetic flowmeter 51 is arranged on the main pipeline 50;
the controller is respectively connected with the electric control valve 23, the first electromagnetic flowmeter 33, the second electromagnetic flowmeter 41, the pressure transmitter 24 and the electromagnetic valve 42.
Specifically, in practical applications, the working process of the liquid supply system of the sprinkler with the integrated functions of accumulating liquid supply and water and fertilizer may include:
a. the controller obtains irrigation water flow, water-fertilizer ratio and discharge capacity of the metering pump, which are required by the sprinkling irrigation and input by a worker;
b. adjusting the electric regulating valve 23 to the minimum opening degree, and starting the first water pump 22;
c. the controller adjusts the opening degree of the electric regulating valve 23 according to the value of the pressure transmitter 24, so that the pressure difference when the water supply branch 20 converges into the gathering pipeline is smaller on the premise of ensuring the stable flow of the main pipeline;
d. after the pressure of the pressure transmitter 24 is stable, a worker adds solid fertilizer into the fertilizer storage barrel and inputs the weight of the added fertilizer into the controller;
e. the controller calculates the amount of water required by the preparation of the fertilizer liquid according to the set irrigation water flow, the weight of the added solid fertilizer, the discharge capacity of the metering pump and the set water-fertilizer ratio;
f. the controller controls the electromagnetic valve 42 to be opened, calculates the water amount flowing into the fertilizer storage barrel 12 according to the water flow information of the fertilizer preparation branch 40 detected by the first electromagnetic flow meter 33, and controls the electromagnetic valve 42 to be closed when the water amount flowing into the fertilizer storage barrel 12 reaches a required value;
g. starting the metering pump 32;
h. when the flow of the main pipeline 50 is insufficient, the controller increases the flow of the main pipeline 50 by increasing the opening degree of the electric regulating valve 23; when the flow of the main pipeline 50 is overlarge, the electric regulating valve 23 is reversely adjusted to reduce the flow;
i. when the water source water storage quantity is insufficient, the pressure in the water supply branch 20 is controlled to be reduced, the controller controls the opening degree of the electric regulating valve 23 on the water supply branch 20 to be reduced until the opening degree is closed, the opening degree of the electric regulating valve 23 in the other water supply branch is controlled to be increased, and if the flow of the main pipeline still cannot reach a preset value when the electric regulating valve 23 is fully opened, first alarm information is output;
j. when the fertilizer liquid in the fertilizer storage barrel 12 is insufficient, controlling the flow in the fertilizer supply branch 30 to be reduced, and outputting second alarm information;
k. the controller executes steps h, i, j in a loop.
The sprinkler liquid supply system with the integrated functions of concentrated liquid supply and liquid fertilizer is characterized in that the controller can obtain irrigation water flow, a liquid fertilizer ratio and the discharge capacity of the metering pump required by the sprinkler irrigation at the time input by a worker, the electric regulating valve 23 is regulated to the minimum opening degree, the first water pump 22 is started, the controller can also regulate the opening degree of the electric regulating valve 23 according to the value of the pressure transmitter 24, on the premise of ensuring the stable flow of the main pipeline, the pressure difference when the water supply branch 20 converges into the concentrated pipeline is smaller, after the pressure of the pressure transmitter 24 is stabilized, the worker adds the solid fertilizer into the fertilizer storage barrel and inputs the weight of the added fertilizer into the controller, the water flow controller calculates the amount of added water required for configuring the fertilizer liquid according to the set irrigation water flow, the weight of the added solid fertilizer, the discharge capacity of the metering pump and the set liquid fertilizer ratio, and the controller can also control the electromagnetic valve 42 to be, calculating the water amount flowing into the fertilizer storage barrel 12 according to the water flow information of the fertilizer preparation branch 40 detected by the first electromagnetic flow meter 33, and controlling the electromagnetic valve 42 to be closed by the controller when the water amount flowing into the fertilizer storage barrel 12 reaches a required value; starting the metering pump 32, and when the flow of the main pipeline 50 is insufficient, the controller increases the flow of the main pipeline 50 by increasing the opening of the electric regulating valve 23; when the flow of the main pipeline 50 is overlarge, the electric regulating valve 23 is reversely regulated to reduce the flow, when the water source water storage amount is insufficient, the pressure in the water supply branch 20 is controlled to be reduced, the controller controls the opening degree of the electric regulating valve 23 on the water supply branch 20 to be reduced until the electric regulating valve is closed, and controls the opening degree of the electric regulating valve 23 in the other water supply branch to be increased, so that smooth water supply is realized, the water and fertilizer integration of the liquid supply system of the sprinkler is realized, the cost of the completely configured water and fertilizer integration system is reduced, and the working intensity of fertilization and irrigation operation is simplified.
In one embodiment, the controller employs a PLC (programmable logic controller).
Specifically, the functions of the controller may include:
(1) ensure the flow of the main pipeline to be stabilized at the set flow value
The controller receives flow information from the first electromagnetic flowmeter, compares the main pipeline flow value with a set flow value, and adjusts the opening of the electric regulating valve. The concrete form is as follows: if the value of the first electromagnetic flowmeter is higher than the set flow value, the control current value of the electric regulating valve is adjusted downwards, the opening degree of the electric regulating valve is reduced, and the flow of the water supply branch is reduced. If the value of the first electromagnetic flowmeter is lower than the set flow value, the control current value of the electric regulating valve is simultaneously adjusted upwards, the opening degree of the electric regulating valve is increased, and the flow of the water supply branch is increased.
(2) The pressure of the water supply branch lines when the water supply branch lines converge into the gathering pipeline is adjusted, so that the pressure difference of each water supply branch line is smaller.
On the basis of the guarantee function (1), the controller receives pressure information from the pressure transmitters (F1, F2), compares the pressure values of the two water supply branches, and adjusts the opening degree of the electric regulating valves (D1, D2).
(3) And calculating the concentration of the fertilizer liquid required to be prepared.
The staff inputs the discharge capacity information that this sprinkling irrigation main line set for flow value, this required liquid manure proportion of sprinkling irrigation and measuring pump set for through the host computer in to the controller, and the required fertilizer liquid concentration of preparing is calculated to the controller, and the calculation mode is:
setting the main pipeline to set the flow value to QIs provided withUnit is m3H; the water-fertilizer ratio required by spray irrigation is CIs provided withThe unit is the discharge capacity of a metering pump QPump and method of operating the sameThe concentration of the required fertilizer liquid is CFertilizerAccording to conservation of mass, QIs provided withCIs provided with＝QPump and method of operating the sameCFertilizerThen C isFertilizer＝QIs provided withCIs provided with/QPump and method of operating the sameTo obtain the concentration of the fertilizer liquid required to be prepared.
(4) Preparing fertilizer liquid with required concentration.
The staff adds a certain amount of solid fertilizer to storing up fertile bucket to input the weight of adding fertilizer into the controller through the host computer. The controller calculates the volume of water needing to be added into the fertilizer storage barrel, and the calculation mode is as follows:
setting the mass of the added solid fertilizer as mFertilizer(ii) a Mass m of water to be addedWater (W)(ii) a Density of water is rhoWater (W)(ii) a Volume of water is VWater (W). According to formula CFertilizer＝mFertilizer/mWater (W)Then m isWater (W)＝mFertilizer/CFertilizerTo obtain the mass of the required added water;according to formula VWater (W)＝mWater (W)/ρWater (W)And obtaining the volume of water needed to be added into the fertilizer storage barrel.
After the controller calculates the volume of water to be added into the fertilizer storage barrel, the electromagnetic valve is electrified, the electromagnetic valve is opened, and water in the main pipeline flows into the fertilizer storage barrel through the fertilizer preparation branch. The controller receives flow information from the first electromagnetic flowmeter, calculates the volume of water actually flowing into the fertilizer storage barrel, and when the required value is reached, the controller powers off the electromagnetic valve, and the electromagnetic valve is closed. The concrete mode is as follows: the controller collects flow information from the electromagnetic flowmeter (E3) every time Δ t, denoted as QiThe volume of water flowing into the fertilizer storage barrel in the time delta t is delta V-QiAt. The calculated delta V after each information acquisition is added, and when the sum reaches VWater (W)When the electromagnetic valve is closed, the controller powers off the electromagnetic valve.
(5) Alarm function
The controller receives pressure information from the pressure transmitters, and when the value of one pressure transmitter is detected to be reduced, the situation that the water quantity of the branch connected with the water source is insufficient is indicated. The controller controls the opening of the electric regulating valve on the branch to be reduced until the branch is closed, and controls the opening of the electric regulating valve in the other water supply branch to be increased. If the flow of the main pipeline still cannot reach the set value when the electric regulating valve is fully opened, the system gives an alarm to prompt a worker to stop irrigation.
The controller receives flow information from the electromagnetic flow meter, when the flow is reduced, the situation that the fertilizer liquid in the fertilizer storage barrel is insufficient is indicated, the system gives an alarm, and workers are prompted to prepare the fertilizer liquid in time.
In one embodiment, the fertilizer storage barrel stirs the fertilizer liquid prepared in proportion and conveys the stirred fertilizer liquid to the main pipeline.
In this embodiment, store up fertile bucket and can prepare fertile liquid by proportion, and have the stirring function.
In one embodiment, the metering pump is a plunger type metering pump.
In one embodiment, the water supply branch comprises a plurality of water supply branches, and each water supply branch is connected with a water source.
As an embodiment, the first filter arranged on the water supply branch is used for filtering silt and impurities existing in a water source; the first water pump is used for pumping water from a water source and pressurizing the water to be sent into the water conveying pipeline; the electric regulating valve is used for regulating the flow and the pressure of the water supply branch; the pressure transmitter is used for detecting the pressure information of the water supply branch; the first check valve is used for preventing the pressure water from flowing backwards.
The second filter arranged on the fertilizer supply branch is used for filtering impurities in the fertilizer liquid; the metering pump is used for quantitatively pumping fertilizer liquid from the fertilizer storage barrel, pressurizing the fertilizer liquid and then feeding the fertilizer liquid into the fertilizer conveying pipeline; the electromagnetic flow meter is used for detecting the flow of the fertilizer liquid; the check valve is used for preventing pressure water from flowing back to the fertilizer supply branch.
The second electromagnetic flowmeter arranged on the fertilizer making branch is used for detecting the water flow of the fertilizer making branch; the electromagnetic valve is used for controlling the on-off of the water flow of the fertilizer preparation branch.
The fertilizer storage barrel is used for storing and preparing fertilizer liquid, and can be provided with a water inlet, a fertilizer adding opening, a water outlet and a stirrer.
The gathering pipeline is used for gathering multiple paths of water into one path of water, and the diameter of the gathering pipeline can be far larger than that of the water supply branch;
the fertilizer supply branch is used for conveying fertilizer liquid, and the diameter of the fertilizer supply branch can be far smaller than that of the water supply branch;
the electric control valve comprises an actuating mechanism and a valve body. The controller outputs an electric signal of 4-20mA to the electric regulating valve through the digital-to-analog conversion module, and an actuating mechanism of the controller can change the opening of the valve according to the signal of the controller to regulate the flow;
the pressure transmitter can convert the numerical value of the pipeline pressure into an analog quantity signal of 4-20mA, and the analog quantity signal is input to the controller, and the controller performs analog-to-digital conversion on the signal to obtain pressure information of the pipeline;
the electromagnetic flowmeter can convert the pipeline flow value into an analog quantity signal of 4-20mA, and the analog quantity signal is input to the controller, and the controller performs analog-to-digital conversion on the signal to obtain flow information of a corresponding pipeline;
the electromagnetic valve is used for controlling the on-off of the water of the fertilizer preparation branch. The controller realizes the open-close control of the electromagnetic valve by switching on and off the electromagnetic valve.
The metering pump is a positive displacement pump, the displacement of the metering pump is not changed along with the change of system parameters once the displacement is set, and the metering pump can change the moving stroke of the plunger in the pump cavity by rotating an adjusting hand wheel to adjust the displacement. The design pressure of the metering pump is higher than the highest pressure of the pipeline, so that the fertilizer liquid is smoothly mixed into the gathering pipeline.
A safety valve is arranged between the outlet of the metering pump and the fertilizer storage barrel 1 and is used for preventing the system pressure from exceeding a set value and protecting personal safety and equipment operation. The safety valve is in a normally closed state when not working, because the discharge capacity of the metering pump does not change along with system parameters, if a pipeline behind the metering pump is blocked, the pressure in the pipeline at the section is increased, and when the pressure exceeds the set value of the safety valve, the safety valve is opened, and the fertilizer liquid flows back to the fertilizer storage barrel through the safety valve.
In an example, the number of the water supply branches may be 2, each water supply branch is connected to one water source, and in this case, the structure of the corresponding sprinkler liquid supply system with the integrated functions of collecting liquid supply and liquid manure may be as shown in fig. 2, and the first water pump on each water supply branch works near the optimal working point when two water sources supply water simultaneously.
Specifically, as shown in fig. 2, the liquid supply system of the sprinkler with the integrated functions of accumulating liquid supply and water fertilizer comprises: a water source A1, a water source A2, a fertilizer storage barrel 1, a branch 5-2, a branch 5-3, a branch 5-4, an aggregation pipeline 6 and a main pipeline 7; wherein the branch 5-1 and the branch 5-2 are both water supply branches, the branch 5-3 is a fertilizer supply branch, and the branch 5-4 is a fertilizer preparation branch.
The water source A1 and the water source A2 are respectively connected with the gathering pipeline 6 through a water supply branch 5-1 and a water supply branch 5-2; the fertilizer storage barrel 1 is connected with a gathering pipeline 6 through a fertilizer supply branch 5-3; the main pipeline 7 is connected with the fertilizer storage barrel 1 through a fertilizer preparation branch 5-4; filters (such as a filter B1 and a filter B2), water pumps (such as a water pump C1 and a water pump C2), electric regulating valves (such as an electric regulating valve D1 and an electric regulating valve D2), pressure transmitters (such as a pressure transmitter F1 and a pressure transmitter F2) and check valves (such as a check valve G1 and a check valve G2) are sequentially arranged on the water supply branch 5-1 and the water supply branch 5-2 between the water source A1 and the water source A2 and the gathering pipeline (6); a fertilizer supply branch 5-3 between the fertilizer storage barrel 1 and the gathering pipeline 6 is sequentially provided with a filter B3, a metering pump 2, an electromagnetic flowmeter E1 and a check valve G3; a safety valve 3 is arranged between the outlet of the metering pump 2 and the fertilizer storage barrel 1; the gathering pipeline 6 is connected with a main pipeline 7, and an electromagnetic flowmeter (E2) is arranged on the main pipeline 7; the controller 8 is respectively connected with the electric control valve D1, the electric control valve D2, the electromagnetic flowmeter E1, the electromagnetic flowmeter E2, the electromagnetic flowmeter E3, the pressure transmitter F1, the pressure transmitter F2 and the electromagnetic valve 4.
Further, as shown in fig. 3, the setting environment of the controller may be that signals detected by the pressure transmitter and the electromagnetic flowmeter are input into the controller for processing after being subjected to a/D conversion; the controller converts the processed data into a 4-20mA current signal after D/A conversion and is used for controlling the opening of the electric control valve. The controller can also control the opening and closing of the electromagnetic valve by switching on and off the electromagnetic valve. The functions of the controller now include:
(1) ensure the flow of the main pipeline to be stabilized at a set value
The controller receives flow information from the electromagnetic flowmeter E2, compares the main line flow value with the set flow value, and adjusts the opening degrees of the electrical control valve D1 and the electrical control valve D2. The concrete form is as follows: if the value of the electromagnetic flowmeter E2 is higher than the set flow value, the control current values of the electric control valve D1 and the electric control valve D2 are adjusted downwards at the same time, the opening degrees of the electric control valve D1 and the electric control valve D2 are reduced, and the flow rates of the water supply branch 5-1 and the water supply branch 5-2 are reduced. If the value of the electromagnetic flowmeter E2 is lower than the set flow value, the control current values of the electric control valve D1 and the electric control valve D2 are simultaneously adjusted upwards, the opening degrees of the electric control valve D1 and the electric control valve D2 are increased, and the flow rates of the water supply branch 5-1 and the water supply branch 5-2 are increased.
(2) The pressure of each water supply branch when the water supply branches converge into the gathering pipeline is adjusted, so that the pressure difference of each water supply branch is smaller.
On the basis of the guarantee function (1), the controller receives pressure information from the pressure transmitter F1 and the pressure transmitter F2, compares the pressure values of the two water supply branches, and adjusts the opening degrees of the electric control valve D1 and the electric control valve D2. The concrete form is as follows: if the value of the pressure transmitter F1 is higher than that of the pressure transmitter F2, the control current value of the electric control valve D1 is adjusted downwards, the opening degree of the electric control valve D1 is reduced, and the pressure value of the water supply branch 5-1 is reduced. Because the opening degree of the electric regulating valve D1 is reduced, the flow in the water supply branch 5-1 is reduced, and in order to ensure the stable flow of the main pipeline, the control current value of the electric regulating valve D2 needs to be adjusted upwards, the opening degree of the electric regulating valve D2 is increased, and the pressure and flow values of the water supply branch 5-2 are improved.
(3) And calculating the concentration of the fertilizer liquid required to be prepared.
The staff inputs the discharge capacity information that this sprinkling irrigation main line set for flow value, this required liquid manure proportion of sprinkling irrigation and measuring pump set for through the host computer in to the controller, and the required fertilizer liquid concentration of preparing is calculated to the controller, and the calculation mode is:
setting the main pipeline to set the flow value to QIs provided withUnit is m3H; the water-fertilizer ratio required by spray irrigation is CIs provided withThe unit is the discharge capacity of a metering pump QPump and method of operating the sameThe concentration of the required fertilizer liquid is CFertilizerAccording to conservation of mass, QIs provided withCIs provided with＝QPump and method of operating the sameCFertilizerThen C isFertilizer＝QIs provided withCIs provided with/QPump and method of operating the sameTo obtain the concentration of the fertilizer liquid required to be prepared.
(4) Preparing fertilizer liquid with required concentration.
The staff adds a certain amount of solid fertilizer to storing up fertile bucket 1 to input the weight of adding fertilizer into the controller through the host computer. The controller calculates the volume of water needing to be added into the fertilizer storage barrel, and the calculation mode is as follows:
setting the mass of the added solid fertilizer as mFertilizer(ii) a Mass m of water to be addedWater (W)(ii) a Density of water is rhoWater (W)(ii) a Volume of water is VWater (W). According to formula CFertilizer＝mFertilizer/mWater (W)Then m isWater (W)＝mFertilizer/CFertilizerTo obtain the mass of the required added water; according to formula VWater (W)＝mWater (W)/ρWater (W)And obtaining the volume of water needed to be added into the fertilizer storage barrel.
After the controller calculates the volume of water to be added into the fertilizer storage barrel, the electromagnetic valve 4 is electrifiedWhen the electromagnetic valve is opened, water in the main pipeline 7 flows into the fertilizer storage barrel through the fertilizer preparation branch 5-3. The controller receives flow information from the electromagnetic flow meter E3, calculates the volume of water actually flowing into the fertilizer storage barrel, and when the required value is reached, the controller powers off the electromagnetic valve, and the electromagnetic valve is closed. The concrete mode is as follows: the controller collects flow information from the electromagnetic flowmeter E3 every time at, denoted as QiThe volume of water flowing into the fertilizer storage barrel in the time delta t is delta V-QiAt. The calculated delta V after each information acquisition is added, and when the sum reaches VWater (W)When the electromagnetic valve is closed, the controller powers off the electromagnetic valve.
(5) Alarm function
The controller receives pressure information from the pressure transmitters F1 and F2, and when the value of one pressure transmitter is detected to be reduced, the controller indicates that the water quantity of the branch connecting water source is insufficient. The controller controls the opening of the electric regulating valve on the branch to be reduced until the branch is closed, and controls the opening of the electric regulating valve in the other water supply branch to be increased. If the flow of the main pipeline still cannot reach the set value when the electric regulating valve is fully opened, the system gives an alarm to prompt a worker to stop irrigation.
The controller receives flow information from the electromagnetic flow meter E1, when the flow is reduced, the fertilizer storage barrel is indicated to be insufficient in fertilizer liquid, the system gives an alarm, and the working personnel is prompted to prepare the fertilizer liquid in time.
Correspondingly, the working process of the liquid supply system of the sprinkling machine with the integrated functions of accumulated liquid supply and water and fertilizer comprises the following steps:
before the system starts to operate, the workers need to input irrigation water flow, water-fertilizer ratio and discharge capacity of the metering pump, which are needed by the current sprinkling irrigation, into the controller through the upper computer.
After relevant parameters are set, the electric control valve D1 and the minimum opening degree of the electric control valve D2 are kept, the water pump C1, the water pump C2, the water source A1 and the water in the water source A2 pass through the filter B1, the filter B2, the water pump C1 and the water pump C2 are sequentially started to enter the water supply branch 5-1 and the water supply branch 5-2, then the pressure and the flow are changed through the electric control valve D1 and the electric control valve D2, and then the pressure and the flow are converged into the gathering pipeline 6 through the pressure transmitter F1, the pressure transmitter F2, the check valve G1 and the check valve G2.
Because the lengths of the water supply branches are different, the resistance loss of irrigation water in the pipelines is different, the pressure of water in each branch is different when the irrigation water is converged into the gathering pipeline, and if the pressure of each branch is not balanced, water in each branch cannot be normally converged into the gathering pipeline. Therefore, a pressure transmitter F1 and a pressure transmitter F2 are arranged at the junction of the branch and the gathering pipeline, the pressure transmitter transmits the measured pressure value of the branch to the controller 8, the controller 8 compares the pressure of each branch to adjust the opening of the electric control valve D1 and the electric control valve D2, so that the pressure difference of each branch is small when the branches converge into the gathering pipeline, and the water in the branches can be guaranteed to normally converge into the gathering pipeline.
After the pressure of the two water supply branches is stable, if water and fertilizer integrated spray irrigation is needed, fertilizer liquid needs to be prepared.
The metering pump selected in the embodiment is a positive displacement pump, and the displacement of the metering pump is not changed along with the change of system parameters once being set. Therefore, the adjustment mode of the proportion of the water and the fertilizer is carried out by changing the concentration of the prepared fertilizer liquid in the fertilizer storage barrel.
The staff adds a certain amount of solid fertilizer to storing up fertile bucket 1 to input the quality of adding fertilizer into controller 8 through the host computer. The controller calculates the volume of water required by the prepared fertilizer liquid according to the set irrigation water flow, the added solid fertilizer mass, the discharge capacity of the metering pump and the set water-fertilizer ratio. The controller is electrified to the electromagnetic valve 4, and the pressure water in the main pipeline 7 flows into the fertilizer storage barrel through the fertilizer preparation branch 5-4. The controller receives flow information from the electromagnetic flow meter E3, calculates the volume of water actually flowing into the fertilizer storage barrel, and when the required value is reached, the controller powers off the electromagnetic valve, and the electromagnetic valve is closed. And stirring the fertilizer liquid by a stirring device in the fertilizer storage barrel, and finishing the preparation work of the fertilizer liquid.
After the fertilizer liquid is prepared, the metering pump 2 is started, the fertilizer liquid in the fertilizer storage barrel 1 enters the fertilizer supply branch 5-3 through the filter B3 and the metering pump 2, and then is converged into the gathering pipeline 6 through the electromagnetic flowmeter E1 and the check valve G3.
The sprinkling irrigation water and the fertilizer liquid which are converged into the gathering pipeline 6 are mixed and then enter the main pipeline 7, and then enter the sprinkling irrigation machine to perform the sprinkling irrigation process after passing through the electromagnetic flow meter E2.
When the flow of the main pipeline is insufficient, the controller increases the flow of the main pipeline by increasing the opening degree of the electric regulating valves D1 and D2; when the main pipeline flow is too large, the flow is reversely adjusted to be reduced.
When the water amount of a certain water source is exhausted, the opening degree of the electric regulating valve of the branch is gradually smaller until the branch is closed, the opening degree of the electric regulating valve in the other water supply branch is gradually increased until the branch is fully opened, and water is supplied by the single water pump at the moment. Because the water pump supplies water according to two water pumps simultaneously and carries out the design lectotype, so single water pump supplies water and probably can not satisfy main line flow demand when required flow is great. If the flow of the main pipeline still cannot reach the preset value when the electric regulating valve is fully opened, the system gives an alarm to prompt a worker to stop irrigation.
When the fertilizer liquid in the fertilizer storage barrel is about to be exhausted, the fertilizer liquid flow of the fertilizer supply branch is reduced, and the controller alarms when recognizing that the fertilizer supply branch flow is reduced, so that the operator is reminded to prepare the fertilizer liquid in time.
Preferably, the working process of the liquid supply system of the sprinkler with the integrated functions of accumulating liquid supply and water and fertilizer can also be as follows:
A. the operator inputs irrigation water flow, water-fertilizer ratio and discharge capacity of the metering pump required by the current sprinkling irrigation into the controller;
b. keeping the minimum opening degree of the electric control valve D1 and the electric control valve D2, and sequentially starting the water pump C1 and the water pump C2;
c. the controller adjusts the opening degree of the electric control valve D1 and the electric control valve D2 according to the values of the pressure transmitter F1 and the pressure transmitter F2, so that the pressure difference when each branch is converged into the gathering pipeline is small on the premise of ensuring the stable flow of the main pipeline;
d. after the pressure of the pressure transmitter F2 is stabilized, a worker adds solid fertilizer into the fertilizer storage barrel and inputs the weight of the added fertilizer into the controller;
e. the controller calculates the amount of water required by the preparation of the fertilizer liquid according to the set irrigation water flow, the weight of the added solid fertilizer, the discharge capacity of the metering pump and the set water-fertilizer ratio;
f. the controller controls the electromagnetic valve 2 to be opened, calculates the amount of water flowing into the fertilizer storage barrel 1 according to the flow information of the fertilizer preparation branch water detected by the electromagnetic flowmeter E3, and controls the electromagnetic valve 2 to be closed when the amount of water reaches a required value;
g. starting the metering pump 2;
h. when the flow of the main pipeline is insufficient, the controller increases the flow of the main pipeline by increasing the opening degree of the electric control valve D1 and the electric control valve D2; when the flow of the main pipeline is overlarge, the reverse adjustment is carried out to reduce the flow;
i. when the water storage amount of a certain water source is insufficient, the pressure in the corresponding water supply branch is reduced, the controller controls the opening degree of the electric regulating valve on the branch to be reduced until the branch is closed, and controls the opening degree of the electric regulating valve in the other water supply branch to be increased; if the flow of the main pipeline still cannot reach the preset value when the electric regulating valve is fully opened, the system gives an alarm to prompt a worker to stop irrigation;
j. when the fertilizer liquid in the fertilizer storage barrel is insufficient, the flow in the fertilizer supply branch is reduced, the system gives an alarm to prompt a worker to prepare the fertilizer liquid in time;
k. the controller executes steps h, i, j in a loop.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It should be noted that the terms "first \ second \ third" referred to in the embodiments of the present application merely distinguish similar objects, and do not represent a specific ordering for the objects, and it should be understood that "first \ second \ third" may exchange a specific order or sequence when allowed. It should be understood that "first \ second \ third" distinct objects may be interchanged under appropriate circumstances such that the embodiments of the application described herein may be implemented in an order other than those illustrated or described herein.
The terms "comprising" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or device that comprises a list of steps or modules is not limited to the listed steps or modules but may alternatively include other steps or modules not listed or inherent to such process, method, product, or device.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A liquid supply system of a sprinkler with integrated functions of gathering liquid supply and liquid manure is characterized by comprising a water source, a fertilizer storage barrel, a water supply branch, a fertilizer preparation branch, a gathering pipeline, a main pipeline and a controller;
the water source is communicated with the gathering pipeline through a water supply branch, the fertilizer storage barrel is communicated with the gathering pipeline through a fertilizer supply branch, the fertilizer storage barrel is communicated with the main pipeline through a fertilizer preparation branch, and the gathering pipeline is communicated with the main pipeline;
the water supply branch is sequentially provided with a first filter, a first water pump, an electric regulating valve, a pressure transmitter and a first check valve, and an input port of the first filter is connected with the water source; a second filter, a metering pump, a first electromagnetic flowmeter and a second check valve are sequentially arranged on the fertilizer supply branch, and an input port of the second filter is connected with the fertilizer storage barrel; a second electromagnetic flowmeter and an electromagnetic valve are sequentially arranged on the fertilizer making branch, and the electromagnetic valve is connected with the main pipeline; a second electromagnetic flowmeter is arranged on the main pipeline;
the controller is respectively connected with the electric control valve, the first electromagnetic flowmeter, the second electromagnetic flowmeter, the pressure transmitter and the electromagnetic valve.
2. The liquid supply system of the sprinkling machine with the functions of accumulating liquid supply and integrating water and fertilizer according to claim 1, wherein the controller adopts a PLC.
3. The liquid supply system of the sprinkler with the functions of accumulating liquid supply and integrating water and fertilizer as claimed in claim 1, wherein the fertilizer storage barrel stirs the fertilizer liquid prepared in proportion and conveys the stirred fertilizer liquid to the main pipeline.
4. The liquid supply system of the sprinkler with the integrated functions of accumulating liquid supply and water and fertilizer as claimed in claim 1, wherein the metering pump is a plunger type metering pump.
5. The liquid supply system of the sprinkling machine with the functions of accumulating liquid supply and integrating water and fertilizer according to claim 1, wherein the water supply branches comprise a plurality of branches, and each branch is connected with a water source.
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| CN202020704779.6U CN212728038U (en) | 2020-04-30 | 2020-04-30 | Sprinkler liquid supply system with integrated functions of accumulated liquid supply and liquid manure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230000028A1 (en) * | 2021-07-02 | 2023-01-05 | Centurylink Intellectual Property Llc | Internet of Things (IOT) -Based Microwell Solution for Irrigation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230000028A1 (en) * | 2021-07-02 | 2023-01-05 | Centurylink Intellectual Property Llc | Internet of Things (IOT) -Based Microwell Solution for Irrigation |
| US11812705B2 (en) * | 2021-07-02 | 2023-11-14 | Centurylink Intellectual Property Llc | Internet of things (IoT)-based microwell solution for irrigation |
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