Water pressure balancing method, water outlet valve assembly and drip irrigation system

Abstract

The invention discloses a water pressure balancing method, a water outlet valve assembly and a drip irrigation system with the water outlet valve assembly. The drip irrigation system comprises a water outlet valve assembly, and the water outlet valve assembly can discharge water according to a water pressure balancing method; the water pressure balancing method comprises the steps that the water outlet valve assembly detects the water pressure value of the water outlet through the water pressure sensor; the water outlet valve assembly outputs the water pressure value to the control module; the control module is used for calculating uniform pressure required by a water outlet of each water outlet valve assembly of the rotational irrigation group and outputting a control instruction to the water outlet valve assemblies; and the water outlet valve assembly receives the control instruction, a valve element of the water outlet valve assembly is controlled according to the control instruction, and the angle of the valve element is adjusted so as to achieve the needed pressure. According to the water pressure balancing method, the water pressure at each drip irrigation position can be ensured to be relatively consistent, and the drip irrigation balance is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of drip irrigation, and in particular, to a water pressure balancing method, a water outlet valve assembly, and a drip irrigation system having the water outlet valve assembly. Background Art

[0002] At present, drip irrigation technology has the effects of low cost, water saving, energy saving, and yield increase, so drip irrigation technology has been widely promoted. However, there are also some deficiencies. Due to the long-distance transmission of water volume in water pipes and the fact that workers irrigate by experience, there is a common phenomenon of uneven water and fertilizer use in cotton irrigation at present. As the length of the pipeline and the size of the water outlet of the tee valve body are different, the water pressure reaching the cotton roots is not the same in the end. In the place far from the head, due to insufficient water pressure, the cotton roots often lack water, while in the place close to the head, the water pressure is high, and there is often too much water reaching the cotton roots. Due to uneven water and fertilizer, the growth and development of cotton are different, and the growth trends are inconsistent, resulting in different topping times, plant protection times, and picking times for each cotton plant, which brings inconvenience to machine operation. At the same time, the cotton yield will also be reduced accordingly, and there is room for improvement. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, an object of the present invention is to provide a water pressure balancing method, a water outlet valve assembly, and a drip irrigation system, which can ensure that the water pressure at each drip irrigation position is relatively consistent and ensure the balance of drip irrigation.

[0004] In a first aspect, the present invention provides a water pressure balancing method, which is characterized by including:

[0005] The water outlet valve assembly detects the water pressure value at the water outlet through a water pressure sensor;

[0006] The water outlet valve assembly outputs the water pressure value to the control module;

[0007] The control module calculates the uniform pressure required at the water outlet of each water outlet valve assembly in the rotation irrigation group, and then outputs a control instruction to the water outlet valve assembly;

[0008] The water outlet valve assembly receives the control instruction, controls the valve core of the water outlet valve assembly according to the control instruction, and adjusts the angle of the valve core to achieve the required pressure.

[0009] In an optional embodiment, the method further includes:

[0010] When the water pressure of each water outlet valve assembly in the rotation irrigation group is balanced, the water pressure adjustment is completed.

[0011] In an optional embodiment, the step of outputting a control instruction to the water outlet valve assembly includes:

[0012] The control module calculates the target rotation position of the valve core and sends the corresponding control instruction to the water outlet valve assembly.

[0013] In an alternative embodiment, the step of the control module calculating the target rotation position of the valve core and sending the corresponding control instruction to the water outlet valve assembly includes:

[0014] When the water pressure value at the water outlet is different from the target pressure value, the control module converts the pressure difference into a rotation angle and sends the rotation angle to the water outlet valve assembly.

[0015] In an alternative embodiment, the step of the control module calculating the uniform pressure required at the water outlet of each water outlet valve assembly in the rotational irrigation group includes:

[0016] The control module analyzes the water pressures at the water outlets of multiple water outlet valve assemblies in the rotational irrigation group and calculates the uniform pressure based on each water pressure value.

[0017] In an alternative embodiment, the water pressure equalization method further includes:

[0018] The control module is set to control the opening degree of the water outlets corresponding to the remaining one or more water outlet valve assemblies to increase or open to the maximum when one or more water outlet valve assemblies are abnormal.

[0019] Second invention, the present invention provides a water outlet valve assembly, which is characterized by including:

[0020] A valve body and a valve core, the valve body has a water inlet and a water outlet, and the valve core is rotatably installed in the valve body;

[0021] A water pressure sensor for detecting the water pressure value at the water outlet;

[0022] A main detector electrically connected to the controller for detecting the relative rotation position of the valve core and the valve body;

[0023] A controller for outputting the water pressure value detected by the water pressure sensor to the control module, and receiving the control instruction sent by the control module, controlling the valve core according to the control instruction, and adjusting the angle of the valve core to achieve the required pressure, wherein the control instruction is the uniform pressure required at the water outlet of each valve body in the rotational irrigation group calculated by the control module and then output to the water outlet valve assembly.

[0024] In an alternative embodiment, when the water pressures of the respective water outlet valve assemblies in the rotational irrigation group are balanced, the water pressure adjustment is completed.

[0025] In an alternative embodiment, the control instruction is used to control the valve core to rotate to the target rotation position.

[0026] In an alternative embodiment, the controller is configured to receive the rotation angle sent by the control module and control the corresponding drive structure to drive the valve core by the corresponding rotation angle, where the rotation angle is obtained by converting the pressure difference when the water pressure value at the water outlet is different from the target pressure value by the control module.

[0027] In an alternative embodiment, the uniform pressure is calculated by the control module by analyzing the water pressure at the water outlets of multiple water outlet valve assemblies according to each water pressure value.

[0028] In an alternative embodiment, the water pressure sensor is installed at a position of the valve body close to the water outlet.

[0029] In an alternative embodiment, the main detector is a magnetoresistive effect sensor.

[0030] In an alternative embodiment, the valve core includes a core body, the core body is rotatably installed in the valve cavity, the core body is provided with a drive shaft extending outside the valve cavity, the drive disk is power-connected to the drive shaft, and the drive disk is power-connected to the power source.

[0031] In a third aspect, the present invention provides a drip irrigation system, which is characterized by comprising: a control module and a plurality of water outlet valve assemblies, and the plurality of water outlet valve assemblies form a rotation irrigation group;

[0032] The water outlet valve assembly includes a valve body and a valve core, the valve body has a water inlet and a water outlet, and the valve core is rotatably installed in the valve body;

[0033] A water pressure sensor for detecting the water pressure value at the water outlet;

[0034] A main detector, the main detector is electrically connected to the controller, and the main detector is used for detecting the relative rotation position between the valve core and the valve body;

[0035] The controller is configured to output the water pressure value detected by the water pressure sensor to the control module;

[0036] The control module is configured to calculate the uniform pressure required at the water outlet of each valve body in the rotation irrigation group, and then output a control instruction to the water outlet valve assembly;

[0037] The controller is configured to receive the control instruction sent by the control module, control the valve core according to the control instruction, and adjust the angle of the valve core to achieve the required pressure.

[0038] In an alternative embodiment, when the water pressures of the respective water outlet valve assemblies in the rotation irrigation group are balanced, the water pressure adjustment is completed.

[0039] In an alternative embodiment, the control module is configured to calculate the target rotation position of the valve core and send the corresponding control instruction to the controller of the water outlet valve assembly.

[0040] In an optional embodiment, the control module is used to analyze the water pressure at the water outlets of the multiple water outlet valve assemblies and calculate the uniform pressure according to the various water pressure values.

[0041] In an optional embodiment, the control module is configured to control the opening of the water outlets corresponding to the remaining one or more water outlet valve assemblies to increase or open to the maximum when one or more water outlet valve assemblies are abnormal.

[0042] In an optional embodiment, the water pressure sensor is installed at a position of the valve body close to the water outlet.

[0043] In an alternative embodiment, the primary detector is a magnetoresistive effect sensor.

[0044] In an optional embodiment, the valve core includes a core body, which is rotatably installed in the valve cavity. The core body is provided with a drive shaft extending out of the valve cavity. The drive disk is dynamically connected to the drive shaft, and the drive disk is dynamically connected to the power source.

[0045] The beneficial effects of the water pressure equalization method of the embodiment of the present invention include: the water pressure equalization method provided by the embodiment of the present invention can calculate the uniform pressure required for the water outlet of each water outlet valve assembly of the rotation irrigation group, and then output a control instruction to the water outlet valve assembly. The water outlet valve assembly receives the control instruction, controls the valve core of the water outlet valve assembly according to the control instruction, and adjusts the angle of the valve core to achieve the required pressure, which can ensure that the water pressure at each drip irrigation position is relatively consistent and the drip irrigation balance is ensured.

[0046] The water outlet valve assembly and the drip irrigation system of the embodiment of the present invention can ensure that the water pressure at each drip irrigation position is relatively consistent, thereby ensuring balanced drip irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0048] Figure 1 2 is a schematic diagram of the connection between the water outlet valve assembly and the water outlet pile according to an embodiment of the present invention;

[0049] Figure 2 is a structural schematic diagram of a water outlet valve assembly according to an embodiment of the present invention;

[0050] Figure 3 is an exploded view of a water outlet valve assembly according to an embodiment of the present invention;

[0051] Figure 4 is a schematic diagram of installing a circuit board and a drive disk according to an embodiment of the present invention;

[0052] Figure 5 is a cross-sectional view of a water outlet valve assembly according to an embodiment of the present invention;

[0053] Figure 6 It is a schematic structural diagram of a drip irrigation system according to an embodiment of the present invention.

[0054] Reference numerals:

[0055] Drip irrigation system 100,

[0056] Water outlet valve assembly 1,

[0057] Valve body 11, mounting circuit board 112, mounting port 113, daughter board 1131, water inlet joint 114, water inlet 1141, water outlet joint 115, water outlet 1151, main body part 116,

[0058] Valve core 12, core body 121, first sub-port 122, second sub-port 123, inner cavity 124, drive disc 125, worm shaft 126, drive shaft 127,

[0059] Water pressure sensor 13, main detector 14, auxiliary detector 15, first magnet 16, second magnet 17,

[0060] Head 21, fertilizer and water tank 22, underground water pipe 23, water hose 24, water outlet pile 25, capillary tube 26. Detailed implementation manners

[0061] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0062] Below with reference to Figures 1 - 5 Describe the water outlet valve assembly 1 according to an embodiment of the present invention. The water flow at the water outlet 1151 of the valve body 11 of the water outlet valve assembly 1 can achieve closed-loop control, with a simple structure and convenient use. When applied to the drip irrigation system 100, it can ensure that the water pressure at each drip irrigation position is relatively consistent and ensure the drip irrigation uniformity.

[0063] As Figures 1 - 5 shown, the water outlet valve assembly 1 according to an embodiment of the present invention includes: a valve body 11, a valve core 12, a water pressure sensor 13, a controller, a main detector 14, and an auxiliary detector 15.

[0064] The valve body 11 has a water inlet 1141 and a water outlet 1151. The valve core 12 is rotatably installed in the valve body 11, that is, the valve core 12 can rotate relative to the valve body 11, and the valve core 12 is used to adjust the water flow between the water inlet 1141 and the water outlet 1151 during rotation. In this way, a corresponding driving structure can be set to drive the valve core 12, so as to achieve the purpose of actively controlling the water flow.

[0065] The water pressure sensor 13 is used to detect the pressure at the water outlet 1151. As Figure 1 and Figure 2 shown, the water pressure sensor 13 can be installed at a position of the valve body 11 close to the water outlet 1151, so that the water pressure sensor 13 can accurately detect the pressure at the water outlet 1151 and ensure the accuracy of water pressure output. It should be noted that the angle of the valve core 12 relative to the valve body 11 can correspond to the pressure and water flow at the water outlet 1151. For example, the initial position of the valve core 12 is set as the initial angle, and at the initial position, the water flow from the water inlet 1141 to the water outlet 1151 is the smallest, such as zero, and as the valve core 12 rotates, the angle of the valve core 12 relative to the valve body 11 increases, and the water flow from the water inlet 1141 of the valve body 11 to the water outlet 1151 gradually increases.

[0066] The controller is used to control the rotation of the valve core 12 according to the detection value of the water pressure sensor 13, that is, the controller can be connected to a power source, such as a driving motor, to control the rotation of the valve core 12 relative to the valve body 11 through the driving motor. Among them, after the water pressure sensor 13 detects the water pressure at the water outlet 1151, the water pressure value can be output to the control module. The control module analyzes and converts the water pressure value, and when the water pressure value is different from the target pressure value, the pressure difference is converted into a rotation angle. Thus, the control module sends the obtained rotation angle to the controller, and the controller controls the corresponding driving structure to drive the valve core 12 at the corresponding rotation angle. That is, when the water pressure value is the same as the target value, there is no need to drive the valve core 12 to rotate. When the water pressure value is less than or greater than the target value, the valve core 12 can be driven to rotate forward or backward, so that the adjusted water pressure meets the water supply requirements. Among them, the water pressure sensor 13 detects the pressure at the water outlet 1151 in real time, so that the water pressure information at the water outlet 1151 is converted into the angle to be adjusted in real time, and then fed back to the controller to adjust the angle of the valve core 12 until the water pressure reaches the target value, realizing the feedback of sensor information, and the process is a closed-loop execution, with a simple structure and convenient control.

[0067] The main detector 14 is used to detect the relative rotational position of the valve core 12 and the valve body 11. Among them, the main detector 14 can be configured as a magnetoresistive effect sensor. For example, the main detector 14 is installed on one of the valve core 12 and the valve body 11, and a corresponding magnetic structure is provided on the other of the valve core 12 and the valve body 11. When the valve core 12 rotates relative to the valve body 11, the rotational amount of the valve core 12 relative to the valve body 11 is realized through the cooperation of the main detector 14 and the corresponding magnetic structure, and the angle at which the valve core 12 is located is determined. At the same time, an auxiliary detector 15 can also be set. The auxiliary detector 15 can be configured as a plurality of Hall sensors, so that the auxiliary detector 15 is also used to detect the relative rotational position of the valve core 12 and the valve body 11. For example, the auxiliary detector 15 is installed on one of the valve core 12 and the valve body 11, and a corresponding magnetic structure is provided on the other of the valve core 12 and the valve body 11. When the valve core 12 rotates relative to the valve body 11, the rotational amount of the valve core 12 relative to the valve body 11 is realized through the cooperation of the auxiliary detector 15 and the corresponding magnetic structure, and the angle at which the valve core 12 is located is determined.

[0068] Thus, both the main detector 14 and the auxiliary detector 15 are used to detect the relative rotational position of the valve core 12 and the valve body 11, and the detected relative rotational position is sent to the controller, which is convenient for the controller to determine that the actual position of the valve core 12 is the same as the target position.

[0069] It should be noted that the water outlet valve assembly 1 in the present invention can be applied to the drip irrigation system 100, such as Figure 6 As shown, the drip irrigation system 100 includes a head 21, a water and fertilizer tank 22, an underground water pipe 23, a water outlet valve assembly 1, and a water hose 24. The head 21, the water and fertilizer tank 22 are communicated with the inlet end of the underground water pipe 23. The outlet end of the underground water pipe 23 is connected to the water hose 24 through the water outlet valve assembly 1, and is conveyed to each crop position through a capillary 26 connected to the water hose 24. And as Figure 6 As shown, the water outlet valve assembly 1 can be set to four. Each valve body 11 of the water outlet valve assembly 1 is provided with an inlet 1141 and two outlets 1151, and the pressures of the water hoses 24 corresponding to different water outlet valve assemblies 1 are different. For example, the water hose 24 is connected to the inlet 1141 of the water outlet valve assembly 1 through a water outlet pile 25. By setting the water outlet valve assembly 1 in the present invention, the water pressures at the outlets 1151 of multiple water outlet valve assemblies 1 are compared and comprehensively analyzed, and the average pressure value is calculated according to each water pressure value to control the rotation of the corresponding valve core 12 of each water outlet valve assembly 1, so that the water pressure finally output to the water hose 24 is relatively balanced, ensuring that the water supply amounts at the positions of each crop are similar and ensuring the balanced growth of the crops.

[0070] And after the water outlet valve assembly 1 is applied to the drip irrigation system 100, the relative rotational position of the valve core 12 and the valve body 11 can be detected by the main detector 14 and / or the auxiliary detector 15 to determine the angle and position of the valve core 12. Among them, when the angle data detected by the main detector 14 and / or the auxiliary detector 15 is discontinuous, has a jump, or there is no data directly, it may indicate that the water pressure in the pipeline is too high or too low. Especially when there is a crack or insufficient pressure in the water belt 24, at this time, the control module of the drip irrigation system 100 can control other water outlet valve assemblies 1 other than the abnormal water outlet valve assembly 1 to open or increase the opening degree to realize the pressure relief of the rotation irrigation group, so as to avoid the problem of pipeline rupture.

[0071] Among them, the main detector 14 and the auxiliary detector 15 can be used as spares for each other in specific applications to ensure that when one of them fails, the other can also be used to detect the rotational state of the valve core 12 relative to the valve body 11, ensure that the water outlet valve assembly 1 is in a normal and reliable operating state, and improve the safety of the operation of the water outlet valve assembly 1.

[0072] According to the water outlet valve assembly 1 of the embodiment of the present invention, not only can the water flow at the water outlet 1151 of the valve body 11 achieve closed-loop control through the cooperation of the water pressure sensor 13 and the controller, but also the structure is simple and easy to use. When applied to the drip irrigation system 100, it can ensure that the water pressure at each drip irrigation position is relatively consistent and ensure the drip irrigation balance.

[0073] In some embodiments, the controller is set to control the main detector 14 to detect the relative rotational position before the auxiliary detector 15, and switch to the auxiliary sensor 15 to detect the relative rotational position when the main detector 14 is abnormal. That is, the auxiliary detector 15 in the present invention can be used as a backup detector for the main detector 14, so that when the main detector 14 is abnormal and cannot detect normally, the detection result of the auxiliary sensor 15 can be used as a judgment basis to realize the design of main and backup, and improve the safety of the water outlet valve assembly 1.

[0074] In some embodiments, the valve body 11 includes a valve main body and a mounting circuit board 112. The mounting circuit board 112 is connected to the valve main body. For example, the mounting circuit board 112 and the valve main body can be connected by fasteners, and the fasteners can be screws, bolts, etc. And during actual installation, the controller can be installed on the mounting circuit board.

[0075] Among them, a valve cavity communicating between the water inlet 1141 and the water outlet 1151 is formed in the valve main body, such as Figure 3As shown, the lower port of the valve body can be formed as the water inlet 1141, and an outlet 1151 is formed on each of the left and right sides. A valve cavity is formed inside the valve body to connect the water inlet 1141 with the two outlets 1151 respectively. Among them, the valve body includes a main body part 116 located in the middle, a water inlet joint 114 and a water outlet joint 115 connected to the main body part 116. Among them, the water inlet 1141 is arranged on the water inlet joint 114, and the outlet 1151 is arranged on the water outlet joint 115.

[0076] The valve core 12 includes a core body 121 and a driving disk 125. The core body 121 is rotatably installed in the valve cavity, and the core body 121 is connected with a driving shaft 127. The driving shaft 127 extends outside the valve cavity. The driving disk 125 is located outside the valve body and is power-connected to the driving shaft 127, and the driving disk 125 is power-connected to the power source. That is to say, both the driving disk 125 and the driving shaft 127 serve as transmission parts between the power source and the core body 121. That is, when the controller drives the core body 121 to rotate, the power source outputs a driving force and transmits it to the driving disk 125 to drive the driving shaft 127 to rotate. During the rotation of the driving shaft 127, the core body 121 is driven to rotate relative to the valve body, changing the position state of the core body 121 between the water inlet 1141 and the outlet 1151, and realizing the adjustment of the water outlet flow rate.

[0077] In some embodiments, a main detector 14 is provided on one of the mounting circuit board 112 and the driving disk 125, and a first magnet 16 is provided on the other of the mounting circuit board 112 and the driving disk 125. That is, in actual design, as Figure 4 shown, the main detector 14 is provided on the mounting circuit board 112, and the first magnet 16 is provided on the driving disk 125; or the first magnet 16 is provided on the mounting circuit board 112, and the main detector 14 is provided on the driving disk 125. In this way, when the driving disk 125 and the core body 121 rotate relative to the valve body 11 together, the main detector 14 and the first magnet 16 can be rotated, so as to detect the rotation amount of the core body 121 relative to the valve body 11. When the detected relative rotation position is sent to the control module, the control module can determine whether the core body 121 rotates at the target rotation position according to the detected relative rotation position, so as to determine whether the water outlet valve assembly is operating normally.

[0078] Among them, during actual detection, the main detector 14 is used to detect the magnetic pole direction of the first magnet 16. As Figure 4 shown, after the first magnet 16 is stably installed, the first magnet 16 is magnetized in the horizontal direction and obtains a horizontal magnetic pole direction. The main detector 14 can detect the magnetic pole direction of the first magnet 16, and it is an absolute quantity and will not lose the angle due to power-on and power-off. Therefore, the accurate detection of the rotation angle of the core body 121 by the main detector 14 can be ensured.

[0079] In some embodiments, asFigure 4 As shown, the first magnet 16 is configured as a ring, sleeved outside the drive shaft 127, and the first magnet 16 is circumferentially synchronized with the drive shaft 127. For example, the inner peripheral wall of the first magnet 16 is provided with a limiting spline, and the upper surface of the drive disk 125 is provided with a protruding portion. The drive shaft 127 passes through the protruding portion and rotates synchronously with the drive disk 125. The outer peripheral wall of the protruding portion is provided with a spline groove, and the limiting spline extends into the spline groove so that the first magnet 16 can rotate circumferentially synchronously with the drive shaft 127, so that the first magnet 16 can rotate relative to the valve body 11 together with the drive shaft 127 and the valve core 12.

[0080] At the same time, the main detector 14 is installed on the mounting circuit board 112, and the main detector 14 is located outside the first magnet 16. That is to say, the main detector 14 can be in the same plane as the first magnet 16, and the main detector 14 is located in the radial direction of the first magnet 16, so that when the first magnet 16 rotates relative to the valve body 11, the main detector 14 can accurately detect the change in the magnetic pole direction of the first magnet 16.

[0081] In some embodiments, as Figure 4 shown, the mounting circuit board 112 is provided with a mounting opening 113. After the mating position of the mounting circuit board 112 and the drive disk 125 is fixed, the first magnet 16 is located in the mounting opening 113. Among them, the inner edge of the mounting opening 113 is provided with a protruding sub-board 1131, and the sub-board 1131 is spaced from the outer peripheral wall of the first magnet 16, so that the rotation of the mounting circuit board 112, the first magnet 16 and the valve core 12 will not interfere. The main detector 14 is provided on the sub-board 1131, so that the distance between the main detector 14 and the first magnet 16 is small, ensuring that the main detector 14 can accurately and reliably detect the magnetic pole direction of the first magnet 16, thereby improving the detection accuracy.

[0082] In some embodiments, as Figure 1 shown, the mounting opening 113 is configured as a circular opening, the first magnet 16 is configured as a circular ring, and the axis of the mounting opening 113, the axis of the first magnet 16 and the axis of the drive shaft 127 coincide. When installing and mating the mounting circuit board 112 with the first magnet 16 and the drive shaft 127, the drive shaft 127 can pass through the first magnet 16. At the same time, the drive shaft 127 passes through the protruding portion of the drive disk 125, so that the mounting circuit board 112, the first magnet 16 and the protruding portion of the drive disk 125 are sequentially sleeved outside the drive shaft 127, with a compact structure installation, reasonable assembly and small overall occupied space.

[0083] In some embodiments, one of the mounting circuit board 112 and the drive disk 125 is provided with an auxiliary detector 15, and the other of the mounting circuit board 112 and the drive disk 125 is provided with a second magnet 17. That is, in actual design, it can be as Figure 4As shown, the auxiliary detector 15 is provided on the mounting circuit board 112, and the second magnet 17 is provided on the drive disk 125; or the second magnet 17 is provided on the mounting circuit board 112, and the auxiliary detector 15 is provided on the drive disk 125. In this way, when the drive disk 125 and the core 121 rotate relative to the valve body 11 together, the auxiliary detector 15 and the second magnet 17 can be rotated, so as to detect the rotation amount of the core 121 relative to the valve body 11, which is beneficial for the control module to determine whether the core 121 rotates at the target rotation position according to the detected relative rotation position when sending the detected relative rotation position to the control module, thereby determining whether the water outlet valve assembly 1 operates normally.

[0084] Among them, during actual detection, the auxiliary detector 15 is used to detect the magnetic pole direction of the second magnet 17. As Figure 4 shown, after the second magnet 17 is stably installed, the second magnet 17 is magnetized in the horizontal direction and obtains a horizontal magnetic pole direction. The auxiliary detector 15 can detect the magnetic pole direction of the second magnet 17 to realize the detection of the relative position between the valve core 12 and the valve body 11.

[0085] In some embodiments, the mounting circuit board 112 is sleeved outside the drive shaft 127, and the mounting circuit board 112 and the drive shaft 127 are spaced apart in the radial direction of the drive shaft 127. In this way, the mounting circuit board 112 and the drive disk 125 can be distributed in parallel, and the two can be coaxially arranged at the mounting port 113, so that the installation of the valve body 11 and the valve core 12 is more compact. At the same time, the mounting circuit board 112 and the drive disk 125 are sequentially distributed in the axial direction of the drive shaft 127, which is beneficial to reducing the overall structural size of the water outlet valve assembly 1 and reducing the space occupation.

[0086] Furthermore, a plurality of auxiliary detectors 15 are provided, and the plurality of auxiliary detectors 15 are spaced apart in the circumferential direction of the drive shaft 127 on the mounting circuit board 112, that is, the plurality of auxiliary detectors 15 can be distributed around the mounting port 113. Among them, in the axial projection along the drive shaft 127, the second magnet 17 coincides with one of the plurality of auxiliary detectors 15.

[0087] That is to say, the second magnet 17 and one of the plurality of auxiliary detectors 15 are distributed directly opposite to each other in the axial direction of the drive shaft 127, so that when the valve core 12 rotates to any position relative to the valve body 11, the position of the second magnet 17 can be detected by one of the auxiliary detectors 15. Among them, as Figure 4As shown, the mounting circuit board 112 can be mounted above the drive disk 125, and the second magnet 17 is located on the upper surface of the drive disk 125 facing the mounting circuit board 112. At the same time, a plurality of auxiliary detectors 15 are mounted on the upper surface of the mounting circuit board 112 and spaced apart from the drive disk 125 to prevent the problem that the drive disk 125 touches the auxiliary detectors 15 when moving relative to the mounting circuit board 112, improving the safety of the design of the water outlet valve assembly 1.

[0088] In some embodiments, the water outlet 1151 is provided with two, as Figures 1 - 3 shown, the valve body 11 is provided with an inlet 1141 and two outlets 1151, and the two outlets 1151 are respectively communicated with the inlet 1141. Among them, the angle at which a plurality of auxiliary detectors 15 are circumferentially distributed around the drive shaft 127 on the mounting circuit board 112 is 180°. Among them, one of the plurality of auxiliary detectors 15 located in the middle can correspond to a 0° value, that is, this auxiliary detector 15 is a zero-scale sensor, and a plurality of sensors located on both sides of this auxiliary detector 15 are sequentially distributed from the zero-scale sensor at 0° to 90°, 0° to -90°.

[0089] Furthermore, when the core 121 is in the initial position relative to the valve body, in the axial projection along the drive shaft 127, the second magnet 17 coincides with one of the plurality of auxiliary detectors 15 located in the middle. It should be noted that in the initial position, the valve core 12 plays a blocking role between the inlet 1141 and the outlet 1151, that is, no water flows out of the water outlet valve assembly 1. And as the valve core 12 rotates, the absolute value of the angle corresponding to the auxiliary detector 15 relative to the second magnet 17 gradually increases. For example, the rotation angle of the valve core 12 gradually rotates towards 90° or -90°, and the position of the second magnet 17 can be accurately detected by a plurality of auxiliary detectors 15 to determine the rotation angle of the valve core 12, thereby realizing the detection of the position of the valve core 12.

[0090] In some embodiments, a plurality of auxiliary detectors 15 are evenly spaced apart in the circumferential direction of the drive shaft 127, that is, the distance between any two adjacent auxiliary detectors 15 among the plurality of auxiliary detectors 15 is uniform, so as to achieve a uniform division of the 180° angle, ensuring that the included angle between two adjacent auxiliary detectors 15 in the circumferential direction of the drive shaft 127 is 10°, so as to increase the detection accuracy.

[0091] In some embodiments, the core 121 is configured as a sphere, and the core 121 has an inner cavity 124 and a first sub-orifice 122 and a second sub-orifice 123 communicated with the inner cavity 124, as Figure 5The first sub-port 122 is shown to be in constant communication with the water inlet 1141, while the second sub-port 123 is selectively in communication with the water outlet 1151. It should be noted that the valve cavity of the valve body can be constructed as a spherical cavity, with the core 121 mounted within the spherical cavity. A rotation hole is provided in the upper wall region of the valve cavity, and the drive shaft 127 extends from the rotation hole to the outside of the valve cavity. The outer peripheral wall of the core 121 is in smooth contact with the inner peripheral wall of the valve cavity, allowing the core 121 to effectively rotate relative to the valve body 11.

[0092] Among them, the water at the water inlet 1141 can flow into the inner cavity 124 of the core body 121, and when the core body 121 closes the water outlet 1151, the valve body 11 is in a closed state, and when the outer wall of the core body 121 is staggered with the water outlet 1151 and the second sub-port 123 is opposite to the water outlet 1151, the water at the water inlet 1141 can enter the inner cavity 124 of the core body 121 from the first sub-port 122, and flow from the second sub-port 123 of the core body 121 to the water outlet 1151, and flow out of the valve body 11 from the water outlet 1151.

[0093] In some embodiments, the power source is provided in the valve body, such as Figure 3 and Figure 4 As shown, the output shaft of the power source is connected to a worm shaft 126, and the outer peripheral wall of the drive disc 125 is provided with driving bevel teeth, which mesh with the worm shaft 126 for transmission. Among them, the power source can be set as a drive motor, and the drive motor is electrically connected to the controller so that the controller controls the rotation of the drive motor. In this way, after determining the target rotation angle of the valve core 12, the controller controls the drive motor to start rotating, and the motor shaft of the drive motor drives the worm shaft 126, which in turn drives the drive disc 125 to rotate. As the drive disc 125 rotates, the drive disc 125 drives the core body 121 to rotate through the drive shaft 127, thereby adjusting the angle of the valve core 12.

[0094] In some embodiments, there are at least two water outlets 1151, and at least two water outlets 1151 are spaced apart and distributed circumferentially around the valve body 11. For example, the water outlets 1151 can be two, three, or more to achieve drip irrigation of multiple crops.

[0095] The present invention also provides a drip irrigation system 100 .

[0096] like Figure 6 As shown, the drip irrigation system 100 includes a header 21, a water and fertilizer irrigation device 22, an underground water pipe 23, a water outlet valve assembly 1, and a water belt 24. The header 21 and the water and fertilizer irrigation device 22 are connected to the inlet end of the underground water pipe 23. The outlet end of the underground water pipe 23 is connected to the water belt 24 through the water outlet valve assembly 1. The water is transported to each crop location through a capillary tube 26 connected to the water belt 24. Figure 6As shown, the water outlet valve assembly 1 can be set to four, and each valve body 11 of the water outlet valve assembly 1 is provided with an inlet 1141 and two outlets 1151. The pressures of the water hoses 24 connected to different water outlet valve assemblies 1 are different. For example, the water hose 24 is connected to the inlet 1141 of the water outlet valve assembly 1 through the water outlet pile 25. By setting the water outlet valve assembly 1 in the present invention, the water pressures at the outlets 1151 of multiple water outlet valve assemblies 1 are compared and comprehensively analyzed, and the average pressure value is calculated according to each water pressure value to control the rotation of the valve core 12 corresponding to each water outlet valve assembly 1, so that the water pressure finally output to the water hose 24 is relatively balanced, ensuring that the water supply amounts at the positions of each crop are similar and ensuring the balanced growth of the crops.

[0097] Among them, in actual design, a control module and multiple water outlet valve assemblies 1 can be set in the drip irrigation system 100. Among them, the water pressure sensors 3 of each water outlet valve assembly 1 are electrically connected to the corresponding controllers, so that the controller of each water outlet valve assembly 1 can control the position of the valve core 12 relative to the valve body 11 according to the detection value of the corresponding water pressure sensor 3. Among them, the controllers of multiple water outlet valve assemblies 1 are all electrically connected to the control module, and the control module is adapted to output a control instruction to the controller of at least one water outlet valve assembly 1 among the multiple water outlet valve assemblies 1, so that the controller controls its valve core 12 according to the control instruction.

[0098] Specifically, the valve bodies 11 of multiple water outlet valve assemblies 1 can be filled with water together, which is called a group for rotation irrigation. The water pressure sensor 13 of each valve body 11 can detect the water pressure at the outlet 1151. During each rotation irrigation, by calculating the uniform pressure required at the outlet 1151 of each valve body 11 in a group for rotation irrigation, the control module calculates and analyzes the water output corresponding to each water outlet valve assembly 1, and then outputs a control instruction to each water outlet valve assembly 1, so that the controller of each water outlet valve assembly 1 controls the drive shaft 127 to rotate, so that the valve core 12 rotates synchronously, and the angle between the core body 121 and the outlet 1151 of the valve body 11 is adjusted to realize the water flow rate at the outlet 1151 and reach the required pressure. At the same time, the water pressure sensor 13 transmits the water pressure back in real time, converts the water pressure information in the outlet 1151 into the angle to be adjusted, and then feeds it back to the controller to adjust the angle of the core body 121 until the water pressures of each water outlet are balanced, realizing the information feedback of the water pressure sensor 13 and the closed-loop execution. And since the pressure in the water hose 24 is the same as that of the water outlet valve, the entire process of water pressure adjustment can be completed.

[0099] In some embodiments, the control module is set to automatic control. The control module is adapted to automatically analyze and calculate the target rotation positions of the respective valve cores 12, and then send corresponding control instructions to the controllers of the respective water outlet valve assemblies 1, so that the multiple controllers simultaneously control the multiple valve cores 12, so that the water pressure values at the water outlets 1151 corresponding to the multiple valve cores 12 are the same. That is to say, in actual design, the water pressure control at the multiple water outlet valve assemblies 1 is automatic control, that is, the actually output water pressure value is calculated and determined by the control module in real time according to the detection value of the water pressure sensor 13 on the valve body 11. Thus, as the pressure at the water inlet 1141 changes, the rotation angles of the respective valve cores 12 also gradually change, so as to ensure that the water outlet pressures at the water outlets 1151 of the respective water outlet valve assemblies 1 are always relatively balanced, and ensure the balanced growth of drip-irrigated crops.

[0100] And / or, in some other embodiments, the control module can also be set to manual control. The control module is adapted to generate the target rotation positions of the respective valve cores 12 according to the input values, and then send corresponding control instructions to the controllers of the respective water outlet valve assemblies 1, so that the multiple controllers simultaneously control the multiple valve cores 12. That is to say, in actual control, the pressures at the water outlets 1151 of the multiple valve bodies 11 can also be set to be different. For example, when the types of crops or the drip irrigation requirements corresponding to the water outlets 1151 of the multiple water outlet valve assemblies 1 are different, the water pressure value can be manually input to make the water output meet the actual drip irrigation requirements. Among them, an input interface or an input button can be set at the control module to realize the manual input of the water pressure value.

[0101] In some embodiments, both the main detector 14 and the auxiliary detector 15 are electrically connected to the control module. Among them, the control module is set to control the opening degrees of the water outlets 1151 corresponding to the remaining one or more water outlet valve assemblies 1 to increase or open to the maximum when the relative rotation positions detected by the main detector 14 and / or the auxiliary detector 15 corresponding to one or more water outlet valve assemblies 1 are continuously different from the target rotation positions.

[0102] That is to say, when the results detected by the main detector 14 and / or the auxiliary detector 15 are different from the positions corresponding to the pressure values detected by the water pressure sensor 13, it can be judged that the rotation state of the valve core 12 is an abnormal state. For example, there may be a problem of controller failure, which will cause the closing and opening of the water outlet valve not to be normally controlled, resulting in too high or too low water pressure in the pipeline. Especially when there is a crack or insufficient pressure in the water belt 24, at this time, the control module of the drip irrigation system 100 can control the other water outlet valve assemblies 1 other than the abnormal water outlet valve assembly 1 to open or increase the opening degree, or when a controller failure occurs in one of the rotation irrigation groups, control the valve body 11 of the adjacent rotation irrigation group to relieve pressure, so as to avoid the problem of pipeline rupture and improve the safety of the drip irrigation system 100.

[0103] Thus, by setting the water outlet valve assembly 1 of the present invention in the drip irrigation system 100 and cooperating the controller with the water pressure sensor 13, the solution for the valve body 11 to automatically adjust the water pressure and information closed-loop control is solved. Applied to cotton field irrigation, it realizes the principle of manual experience irrigation and achieves the purpose of required irrigation and uniform irrigation.

[0104] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0105] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features.

[0106] In the description of the present invention, the meaning of "a plurality" is two or more.

[0107] In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0108] In the description of the present invention, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0109] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0110] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water pressure equalization method, characterized in that, including: The water outlet valve assembly detects the water pressure value at the water outlet through a water pressure sensor; The water outlet valve assembly outputs the water pressure value to the control module; The control module calculates the uniform pressure required at the water outlet of each water outlet valve assembly in the rotational irrigation group, and then outputs a control instruction to the water outlet valve assembly; The water outlet valve assembly receives the control instruction, controls the valve core of the water outlet valve assembly according to the control instruction, and adjusts the angle of the valve core to achieve the required pressure.

2. The water pressure equalization method according to claim 1, characterized in that The method further includes: When the water pressures of the respective water outlet valve assemblies in the rotational irrigation group are balanced, the water pressure adjustment is completed.

3. The water pressure equalization method according to claim 1, characterized in that, The step of outputting the control instruction to the water outlet valve assembly includes: The control module calculates the target rotational position of the valve core and sends the corresponding control instruction to the water outlet valve assembly.

4. The water pressure equalization method according to claim 3, wherein The step of the control module calculating the target rotational position of the valve core and sending the corresponding control instruction to the water outlet valve assembly includes: When the water pressure value at the water outlet is different from the target pressure value, the control module converts the pressure difference into a rotational angle and sends the rotational angle to the water outlet valve assembly.

5. The water pressure equalization method according to claim 1, characterized in that, The step of the control module calculating the uniform pressure required at the water outlet of each water outlet valve assembly in the rotational irrigation group includes: The control module analyzes the water pressures at the water outlets of multiple water outlet valve assemblies in the rotational irrigation group and calculates the uniform pressure according to each water pressure value.

6. The water pressure equalization method according to claim 1, characterized in that The water pressure balancing method further includes: The control module is set to control the opening degree of the corresponding water outlets of the remaining one or more water outlet valve assemblies to increase or open to the maximum when one or more of the water outlet valve assemblies are abnormal.

7. A water outlet valve assembly, characterized in that, including: A valve body and a valve core. The valve body has a water inlet and a water outlet, and the valve core is rotatably installed in the valve body; A water pressure sensor for detecting the water pressure value at the water outlet; A main detector electrically connected to the controller for detecting the relative rotational position of the valve core and the valve body; A controller for outputting the water pressure value detected by the water pressure sensor to the control module, and receiving the control instruction sent by the control module, controlling the valve core according to the control instruction, and adjusting the angle of the valve core to achieve the required pressure. Among them, the control instruction is the uniform pressure required at the water outlet of each valve body in the rotational irrigation group calculated by the control module, and then output to the water outlet valve assembly.

8. The water outlet valve assembly according to claim 7, characterized in that, When the water pressures of the respective water outlet valve assemblies in the rotational irrigation group are balanced, the water pressure adjustment is completed.

9. The water outlet valve assembly according to claim 7, wherein The control instruction is used to control the valve core to rotate to the target rotational position.

10. The water outlet valve assembly according to claim 9, wherein, The controller is used to receive the rotational angle sent by the control module, and control the corresponding drive structure to drive the valve core at the corresponding rotational angle. Among them, the rotational angle is obtained by converting the pressure difference when the water pressure value at the water outlet is different from the target pressure value by the control module.

11. The water outlet valve assembly according to claim 7, characterized in that, The uniform pressure is obtained by the control module analyzing the water pressures at the water outlets of multiple water outlet valve assemblies and calculating according to each water pressure value.

12. The water outlet valve assembly according to claim 7, characterized in that, The water pressure sensor is installed at a position of the valve body close to the water outlet.

13. The water outlet valve assembly according to claim 7, wherein, The main detector is a magnetoresistive effect sensor.

14. The water outlet valve assembly according to claim 7, characterized in that, The valve core includes a core body, the core body is rotatably installed in the valve cavity, the core body is provided with a drive shaft extending outside the valve cavity, a drive disk is power-connected to the drive shaft, and the drive disk is power-connected to a power source.

15. A drip irrigation system, characterized in that, Comprising: A control module and a plurality of water outlet valve assemblies, the plurality of water outlet valve assemblies form a rotational irrigation group; The water outlet valve assembly includes a valve body and a valve core, the valve body has a water inlet and a water outlet, and the valve core is rotatably installed in the valve body; A water pressure sensor for detecting the water pressure value at the water outlet; A main detector, the main detector is electrically connected to the controller, and the main detector is used for detecting the relative rotational position of the valve core and the valve body; The controller is used to output the water pressure value detected by the water pressure sensor to the control module; The control module is used to calculate the uniform pressure required at the water outlet of each valve body of the rotational irrigation group, and then output a control instruction to the water outlet valve assembly; The controller is used to receive the control instruction sent by the control module, control the valve core according to the control instruction, and adjust the angle of the valve core to achieve the required pressure.

16. The drip irrigation system according to claim 15, characterized in that, When the water pressure of each water outlet valve assembly in the rotational irrigation group is balanced, the water pressure adjustment is completed.

17. The drip irrigation system according to claim 15, characterized in that, The control module is used to calculate the target rotational position of the valve core and send the corresponding control instruction to the controller of the water outlet valve assembly.

18. The drip irrigation system according to claim 15, characterized in that, The control module is used to analyze the water pressure at the water outlets of the plurality of water outlet valve assemblies and calculate the uniform pressure according to each water pressure value.

19. The drip irrigation system according to claim 15, characterized in that, The control module is set to control the opening degree of the water outlets corresponding to the remaining one or more water outlet valve assemblies to increase or open to the maximum when one or more of the water outlet valve assemblies are abnormal.

20. The drip irrigation system according to claim 15, wherein, The water pressure sensor is installed at a position of the valve body close to the water outlet.

21. The drip irrigation system according to claim 15, characterized in that, The main detector is a magnetoresistive effect sensor.

22. The drip irrigation system according to claim 15, wherein, The valve core includes a core body, the core body is rotatably installed in the valve cavity, the core body is provided with a drive shaft extending outside the valve cavity, a drive disk is power-connected to the drive shaft, and the drive disk is power-connected to a power source.

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