CN102246683A - Double pressure stabilizing hydrodynamic variable frequency automatic air adding and water supplying drip irrigation control system - Google Patents

Abstract

The invention relates to a double-stabilized hydraulic frequency conversion automatic aerated water supply drip irrigation control system, which has an automatic pumping, aerated water supply device and a plurality of greenhouses with micro-pressure water and fertilizer drip irrigation devices, and a high-level water storage and pressure stabilization container in the water supply device The water inlet pipe is connected with a Venturi oxygenator, and the water outlet of the water storage and pressure stabilization container is connected to the water inlet of each micro-pressure water and fertilizer drip irrigation device through the output water pipe equipped with a water dynamic micro-sensing feedback device. The automatic water supply control device composed of water control duplex series series electromagnetic floating water level sensor group, overrun water level sensor group and on-demand automatic pumping controller can automatically supply water according to the drip irrigation needs of greenhouse crops and protect the machine pump and pipeline equipment; micro-pressure water and fertilizer drip irrigation The device includes a secondary water storage and pressure-stabilizing tank with a fertilizer liquid bucket. The outlet pipe of the pressure-stabilizing tank and the fertilizer liquid outlet pipe of the fertilizer liquid bucket are connected with the output water pipe on the high-level water storage and pressure-stabilizing container in the water supply device to form a The water and fertilizer mixing output pipe of the water and fertilizer drip irrigation branch pipe in the greenhouse.

Description

Double-stabilized hydraulic frequency conversion automatic air-filling water supply drip irrigation control system

technical field

The invention belongs to the technical field of water and fertilizer supply equipment for facility agriculture, and relates to a dual-stable water and fertilizer drip irrigation control system that can automatically and timely supply aerated water to micro-pressure water and fertilizer drip irrigation devices in multiple greenhouses according to the feedback and induction of drip irrigation water dynamic information .

Background technique

In recent years, all parts of the country are vigorously promoting facility agriculture, building greenhouses and implementing integrated drip irrigation for energy saving, water saving, and fertilization, but most of them are water supply in the traditional way, and there are no new methods of voltage stabilization, gas addition, and hydraulic frequency conversion. At present, "power frequency conversion equipment" has been used to control water supply in some places with many greenhouses. It is based on whether the entire irrigation area uses water or not, and the shutdown pump has the disadvantages that it cannot meet the drip irrigation water requirements of some greenhouse crops at any time when the water is cut off, and cannot adapt to the requirements of micro-pressure water and fertilizer drip irrigation in greenhouses, especially small and medium-sized greenhouses.

Contents of the invention

The purpose of the present invention is to solve the problems existing in the prior art, based on the national conditions, to provide a double-stabilized water dynamic frequency conversion automatic Aerated water supply drip irrigation control system.

The technical solution adopted in order to realize the purpose of the above invention is as follows: the provided double-stabilized hydraulic frequency conversion automatic aerated water supply drip irrigation control system has an automatic pumping, aerated, and water supply device guided by sensors and multiple greenhouses. Micro-pressure water and fertilizer drip irrigation device, wherein,

Said automatic water pumping, air-filling and water supply device is composed of a water supply device with a high-level water storage and pressure-stabilizing container (a first-stage pressure-stabilizing water supply device) and an automatic water-supply control device arranged on the water supply device. The water outlet is connected to the water source through the upper water pipe of the pump, and the water outlet of the high-level water storage and pressure-stabilizing container is connected to the water inlet of each micro-pressure water and fertilizer drip irrigation device through the output water pipe equipped with a water dynamic micro-sensing feedback device. There is a Venturi oxygenator connected to the top of the tank; the automatic water supply control device consists of a water control duplex series electromagnetic floating water level sensor group and an over-limit water level sensor group set in the high-level water storage and pressure-stabilizing container, and a set in the high-level water storage and pressure-stabilizing container. It consists of an on-demand automatic water pumping controller outside. The water control compound series electromagnetic floating water level sensor group includes two single sensors respectively located on the upper and lower parts of the high-level water storage and pressure stabilization container. The output ends of the two sensors are connected to the The input control end of the on-demand automatic water pumping controller, the output control end of the on-demand automatic water pumping controller are connected to the power input end of the water source pump, and the over-limit water level sensor group includes two devices respectively arranged in the high-level water storage and pressure stabilization container. Set the sensor at the ultra-high water level limit and the low water level limit, and the output terminals of the two sensors are connected to the sound and light alarm outside the pressure-stabilizing container through the sensor output line;

Said micro-pressure water and fertilizer drip irrigation device has a secondary water storage tank with a water supply pipe and a water outlet pipe, and a fertilizer liquid bucket with a fertilizer liquid outlet pipe is arranged on the secondary water storage tank. The outlet pipe of the water pressure tank and the fertilizer liquid outlet pipe of the fertilizer liquid tank are connected to the output water pipe on the high-level water storage and pressure stabilization container to form a water and fertilizer mixing output pipe. The output end of the water and fertilizer mixing output pipe is connected to the water and fertilizer drip irrigation branch pipe in the greenhouse. input.

The technical solution of the present invention is also that: the water supply device has a machine well room (or another water storage container support) higher than or equal to 3 meters, and the high-level water storage and pressure stabilization container frame is installed above the machine well room; the high-level water storage and pressure stabilization The container is a water storage tank, a water storage tank or a water tower.

The technical solution of the present invention is also that: the Venturi oxygenator installed on the top of the water pipe on the water pump includes a water pipe with a tapered and variable diameter throat in the middle, and a A T-shaped three-way intake pipe, a solenoid valve is installed on both sides of the horizontal pipe section of the T-shaped three-way intake pipe, and a filter screen is installed on the outlet pipe of the solenoid valve on one side, and the entrance of the solenoid valve on the other side is connected to the electric small Dispenser outlet connection. .

The technical solution of the present invention also lies in that the distance between the two sensor valves constituting the water control compound series electromagnetic floating water level sensor is 8-10 cm, and is located between the installation positions of the two overrun water level sensors.

In actual work, the pump is monitored by the water control compound series series electromagnetic floating water level sensor group to add water to the high-level water storage and pressure stabilization container (water storage tank, water storage tank or water tower, etc.), in order to prevent the sensor from fluctuating due to water surface fluctuations during pumping. Floating, causing frequent switching, damage to the pump, there is a certain distance (8~10cm) between the two single sensors in the water control compound series electromagnetic floating water level sensor group, when the water level in the water storage and pressure stabilization container drops to the low level sensor Automatically start the pump, and automatically shut down the pump when the water level rises to the high level sensor, which can stably keep water in the water storage and pressure stabilization container; the water control duplex series series electromagnetic floating water level sensor group can also prevent "water hammer" from occurring in the rapid switch on and off pump ", the phenomenon of destroying the pipeline; one sensor in the overrun water level sensor group is installed at the position where the maximum water level is set to limit the water storage and pressure stabilization container, and the other sensor is located at the position where the minimum water level is set in the water tank, as a monitoring reminder Water control compound series series electromagnetic floating water level sensor group is used for sound and light alarm when failure occurs; the Venturi oxygenator connected to the top of the water pipe on the pump can add oxygen into the water storage and pressure stabilization container along with the water when pumping; the on-demand automatic The pumping control only uses 220V AC, which is converted to DC 12V by the rectifier and communicated with the electromagnetic floating water level sensor group. According to the feedback information of the water dynamic micro-sensing, the automatic pumping controller drives the switch on and off the pump; refer to the power of the pump used during work, and assemble the corresponding The electrical components (380V, 220V) are switched on and off by the automatic water pumping controller to keep the high-level water storage and pressure-stabilizing container constantly filled with water; the high-level water storage and pressure-stabilizing container is connected to the micro-pressure water and fertilizer drip irrigation device of each greenhouse through the water pipe , a water dynamic micro-sensing feedback device is installed on the water delivery pipe, and the aerated water is supplied to the micro-pressure water and fertilizer drip irrigation device of each greenhouse according to the water consumption situation of the irrigation area through the output water pipe. When the water is not in use, the flow direction of the water in the output water pipe produces a slight movement, which can be fed back to the water control duplex series electromagnetic floating water level sensor group in the water storage and pressure stabilization container through the water dynamic micro-sensing feedback device, and then it can automatically stop pumping , when the irrigation area uses water, it will automatically start up, without the need for energy dissipation and pressure regulation of the pipe network, and without additional fertilization settings, it can achieve micro-pressure feeding of liquid fertilizer, and directly apply low-pressure drip irrigation belt (pipe), which is easy to realize energy saving, water saving, capital saving, water and fertilizer Integrated drip irrigation. Experiments have proved that the device using the water control compound series series electromagnetic floating water level sensor group has a sensitive response, and the automatic water supply control of the water dynamic micro-sensing feedback information is reliable, easy to operate, and conducive to the random water use of the system.

Compared with the prior art, the beneficial effects of the present invention are as follows.

1. Saving investment: the system of the present invention is lower in cost than pure power frequency conversion equipment for drip irrigation and automatic water supply, but it has the basic function of constant voltage with power frequency conversion equipment.

2. Easy installation and energy saving: the water storage and pressure stabilization container can be installed on the top of the three-meter-high well house or on the three-meter-high support, without the need for high-power, high-lift pumps to pump water, which can meet the requirements of low-pressure water and fertilizer drip irrigation. Can save energy.

3. It can automatically pump water on demand to meet the needs of drip irrigation water for different crops in the greenhouse at any time. When not in use, keep the water tank full and automatically shut down the pump. It will not be like the existing power frequency conversion equipment, no matter how much water the system uses. Start the pump.

4. Simple control and safe sensing: the design of the special water level sensor group is scientific and reasonable, low voltage transmission signal, equipped with a waterproof wave interference area, which can prevent frequent start-up and rapid switch from causing "water hammer" to damage the pipeline, which is beneficial to protect the pump, pipes and other equipment.

5. The Venturi oxygenator installed at the upper water pipe of the water pump on the top of the water storage and pressure stabilization container, uses the negative pressure at the throat of the Venturi oxygenator to add oxygen automatically or through an electric small gas dispenser, which has high efficiency and can directly make the already The aerated water is stored in the pressure-stabilizing container for random application in the drip irrigation area, and the use of aerated water and fertilizer drip irrigation can improve the soil structure, which is more conducive to improving the yield and quality of crops.

6. According to the actual situation of the irrigation area, the water dynamic micro-sensing feedback device for water dynamic feedback is transmitted to the water control compound series series electromagnetic floating water level sensor group to guide the automatic switching on and off of the pump to meet the water demand of different crops in various greenhouses at any time, and maintain the first-level voltage stabilization 'The water stored in the pressure-stabilizing container and the secondary voltage-stabilizing of each greenhouse' will automatically shut down the pump after the drip irrigation device is full of water, and it can automatically start up again when the irrigation area is watered, achieving double-stabilized voltage. The situation that the system needs to start the pump frequently when the amount of water is used.

7. Easy to control, safe and reliable sensing: The design of two sets of specially made combined water level sensors is scientific and reasonable, using low voltage to transmit signals, and equipped with (about 10 cm) waterproof surface fluctuation interference to prevent frequent power-on and rapid switching from causing "water hammer" ", which is conducive to the protection of machine pumps and pipeline equipment, and thus constitutes a complete set of drip irrigation micro-pressure fertilization and water supply system with multiple functions and convenient application.

8. There is a micro-pressure water and fertilizer drip irrigation device in the greenhouse, which can automatically adjust the water volume, stabilize the water pressure, and supply random water, which is conducive to improving the quality of drip irrigation, adapting to today's advocacy of energy saving, low pressure, and water and fertilizer drip irrigation, and realizing the country's integration of water and fertilizer drip irrigation requirements, which is conducive to promoting production increase.

Description of drawings

Fig. 1 is a structural schematic diagram of a specific embodiment of the present invention.

Fig. 2 is a schematic structural view of the automatic water supply device of the present invention.

The names of the labels in the attached drawings are respectively: 1-water control compound series series electromagnetic floating water level sensor group, 1a-upper water level sensor, 1b-lower water level sensor, 2-over-limit water level sensor group, 2a-limit ultra-high water level sensor, 2b-Limit low water level sensor, 3-Water dynamic micro-sensing feedback device, 4-Venturi oxygenator, 5-Solenoid valve, 6-Small electric gas dispenser, 7-Automatic suction nozzle, 8-Automatic water pumping on demand Controller, 9-sound and light alarm, 10-sensor output line, 11-AC power line (380V or 220V, depending on the power of the machine pump), 12-output water pipe, 13-water pump upper pipe , 14-water source pump, 15-high water storage and pressure-stabilizing container, 16-water delivery pipe, 17-machine well room (or water tank support), 18-adding water pipe, 19-secondary water storage and pressure-stabilizing tank, 20-fertilizer liquid Barrel, 21-fertilizer adjustment control valve, 22-water and fertilizer mixing output pipe, 23-water and fertilizer drip irrigation branch pipe in the greenhouse.

Detailed ways

The content of the present invention will be further described below in conjunction with the accompanying drawings, but the specific implementation forms of the present invention are not limited to the following embodiments.

Referring to the accompanying drawings, the double-stabilized hydraulic frequency conversion automatic aerated water supply drip irrigation control system of the present invention is composed of an automatic pumping, aerated, and water supply device and a micro-pressure water and fertilizer drip irrigation device installed in multiple greenhouses. The automatic pumping, air-filling and water supply device includes two parts: a water supply device and an automatic water supply control device arranged on the water supply device. The water supply device wherein has a machine well room 17 with a height of more than 3 meters (including 3 meters) near the machine well (water source) or builds a water tank support higher than 3 meters in addition, and a high-level water storage and pressure stabilizing container is installed on the machine well room 17 15 (water tanks, water tanks, etc.), the water inlet of the water storage and pressure stabilization container 15 is communicated with the water source through the upper water pipe 13 of the water pump, and the water outlet output water pipe 12 of the water storage and pressure stabilization container 15 is connected to each micro pressure water fertilizer drip irrigation device. The water pipe water inlet is connected with a Venturi oxygenator 4 on the top of the water pipe 13 on the water pump. The Venturi oxygenator 4 includes a water pipe with a tapered and variable diameter throat in the middle, and a T-shaped three-way air intake pipe is installed at the thinnest mouth of the water pipe throat, and a T-shaped three-way air intake pipe horizontal pipe section A solenoid valve 5 is respectively installed at both sides of the mouth, and the input port of the solenoid valve on one side is equipped with a filter screen to form an automatic suction pipe port 7 of a natural air inlet. The output port is connected to promote aeration, and the electric switch in the operation room can be operated according to the soil quality and water dynamics of the irrigation area, and then the electromagnetic valve 5 can be adjusted to switch applications. The automatic water supply control device is composed of water control duplex series electromagnetic floating water level sensor group 1, overrun water level sensor group 2, on-demand automatic water pumping controller 8, sound and light alarm 9 and other components. Two water level sensors 1a, 1b that constitute the water control compound series series electromagnetic floating water level sensor group 1 are installed at an appropriate position on the upper part of the water storage and pressure stabilizing container 15, and the direct current (12V) output line 10 is connected with the on-demand automatic water pumping controller. 8 Unicoms, are connected with the machine pump by the AC power line 11 through the power conversion member (selected depending on the power of the motor). During work, the two water level sensors 1a and 1b issue commands to turn on and off the pump. When the greenhouse drips water, the water level in the water storage and pressure stabilization container 15 drops, and the water dynamic micro-sensing feedback device feeds back the water level in the container according to the micro-sensing signal. Changes, then the water control complex series series electromagnetic floating water level sensor group 1 starts the on-demand automatic water pumping controller 8 according to the feedback information to start the motor pump, and feeds the high-level water storage and pressure stabilization container (first-level pressure stabilization container) through the water pipe 13 on the water pump. 15 add water, so promptly can keep stably to often have water in the high-level water storage and pressure stabilizing container 15. Two water level sensors 2a, 2b constituting the over-limit water level sensor group 2 are respectively installed at appropriate positions in the high-level water storage and pressure stabilization container 15. The over-limit water level sensor group is mainly used for sound and light alarm, and can monitor and control water Failure of series electromagnetic floating water level sensor group 1. In addition, a water dynamic micro-sensing feedback device 3 is installed on the water delivery pipe 12 from the high-level water storage and pressure stabilization container 15 to each micro-pressure water and fertilizer drip irrigation device, and the water that has been aerated is given to each by the water situation in the drip irrigation area through the water dynamic micro-sensing feedback device 3. The micro-pressure water and fertilizer drip irrigation device in the greenhouse automatically supplies water on demand. When the irrigation area does not use water, the flow direction of the water in the water delivery pipe 12 produces micro-motions, which can be fed back to the high-level water storage stability through the water dynamic micro-sensing feedback device 3. The water control duplex series connection electromagnetic floating water level sensor group 1 in the pressure vessel 15 can automatically shut down and pump water, and automatically start up again when the irrigation area uses water. In an actual application structure, the water dynamic micro-sensing feedback device 3 may adopt a variable-flow vane valve based on the principle of a single-flow valve.

The micro-pressure water and fertilizer drip irrigation device has a secondary water storage tank 19 with a water pipe 18 and an outlet pipe, and a fertilizer bucket 20 with a fertilizer output pipe is provided on the secondary water storage tank 19. The outlet pipe of the water storage and pressure tank 19 and the fertilizer liquid outlet pipe of the fertilizer liquid tank 20 are connected with the output water pipe on the high-level water storage and pressure stabilization container to form a water and fertilizer mixing output pipe 22, and the output end of the water and fertilizer mixing output pipe 22 is connected to the greenhouse The input end of the water and fertilizer drip irrigation branch pipe 23. When carrying out drip irrigation water for greenhouses, the water in the high-level water storage and pressure-stabilizing container 15 is supplied by the water delivery pipe 16 to the micro-pressure water and fertilizer drip irrigation control device installed in each greenhouse through the water supply pipe 18 at any time; Fertilizer solution, then the fertilizer solution is output by the fertilizer control valve 21. After the fertilizer solution and the water solution are mixed through the water and fertilizer mixing output pipe 22, the mixed water and fertilizer are sent to the drip irrigation branch pipe 23 for drip irrigation; when no fertilizer is needed, turn off the fertilizer adjustment The control valve 21 only uses the clear water drip irrigation of the micro-pressure drip irrigation control device. Through the above procedures, water can be automatically and continuously supplied to the micro-pressure water and fertilizer drip irrigation control devices in multiple greenhouses at the same time.

Claims (5)

1. a bistable setting-out moves the automatic aerating water supply of frequency conversion drip irrigation control system, it is characterized in that: it has a dress minute-pressure liquid manure drip irrigation appliance in draw water automatically the aerating water supply installation and the multi-section temperature canopy of sensor guiding,

Automatically the aerating water supply installation that draws water is made up of water-feed that has elevated storage pressurizing vessel (15) and the automatic water supply control device that is arranged on the water-feed, the water inlet of elevated storage pressurizing vessel (15) is communicated with the water source by suction pump upper hose (13), the delivery port of elevated storage pressurizing vessel (15) passes through the filler pipe water inlet that the output water pipe (12) that the little sense ultramagnifier of hydrodynamic(al) attitude (3) is housed is connected to each minute-pressure liquid manure drip irrigation appliance, connects at the top of suction pump upper hose (13) a venturi oxygenation apparatus (4) is housed; Automatic water supply control device is by being arranged on the compound series connection electromagnetism of control water in the elevated storage pressurizing vessel (15) float level sensor group (1) and the level sensor group (2) and be arranged on elevated storage pressurizing vessel (15) controller (8) that draws water automatically as required outward and form of transfiniting, the unsteady level sensor group (1) of the compound series connection electromagnetism of control water comprises two single-sensor (1a that are located at elevated storage pressurizing vessel (15) upper and lower respectively, 1b), two sensors (1a, 1b) output is connected to the input control end of the controller (8) that draws water automatically as required through sensor output line (10), automatically the draw water power input of pump (14) of output control terminal and the water source of controller (8) that draws water as required connects, the level sensor group that transfinites (2) comprises that two are separately positioned on the sensor (2a that sets restriction superelevation water level place in the elevated storage pressurizing vessel (15) and restriction low water level place is set, 2b), two sensors (2a, 2b) output is connected to audible-visual annunciator (9) outside the pressurizing vessel through sensor output line (10);

Minute-pressure liquid manure drip irrigation appliance has the secondary water storage vacuum tank (19) of a band filler pipe (18) and outlet pipe, on secondary water storage vacuum tank (19), be provided with the solution bucket (20) that a band solution goes out pipe, the solution of secondary water storage vacuum tank (19) outlet pipe and solution bucket (20) goes out pipe and is connected with output water pipe on the elevated storage pressurizing vessel (15), form liquid manure mixing efferent duct (22), the output of liquid manure mixing efferent duct (22) passes to the input of liquid manure drip irrigation arm (23) in the warm canopy.

2. bistable setting-out according to claim 1 moves the automatic aerating water supply of frequency conversion drip irrigation control system, and it is characterized in that: water-feed has a motor-pumped well room (17) that is greater than or equal to 3 meters, and elevated storage pressurizing vessel (15) frame is contained in the top of motor-pumped well room (17).

3. bistable setting-out according to claim 1 and 2 moves the automatic aerating water supply of frequency conversion drip irrigation control system, and it is characterized in that: elevated storage pressurizing vessel (15) is water storage box, water tank or water tower.

4. bistable setting-out according to claim 1 moves the automatic aerating water supply of frequency conversion drip irrigation control system, it is characterized in that: the venturi oxygenation apparatus (4) that connects dress at the top of suction pump upper hose (13) comprises that a middle part has the water service pipe of convergent reducing trunnion, a T type threeway air inlet pipe even is equipped with at the thinnest mouthful of place at water service pipe larynx neck, the mouth place respectively adorns a magnetic valve in T type threeway air inlet pipe horizontal pipeline section both sides, on the one side magnetic valve outlet pipe filter screen is housed, the inlet of opposite side magnetic valve is connected with the delivery outlet of electronic small-sized filling machine.

5. bistable setting-out according to claim 1 moves the automatic aerating water supply of frequency conversion drip irrigation control system, it is characterized in that: constitute the compound series connection electromagnetism of control water and float between two sensors (1a, 1b) of level sensor group (1), and be positioned at being provided with between the position of two level sensors that transfinite (2a, 2b) at a distance of 8～10cm.

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