Single drive multi-channel independent water distribution valve

Abstract

The present invention relates to a single-drive, multi-channel, independent water distribution valve, comprising a cylindrical valve housing, a valve core, a valve inner core, and a controller. The cylindrical valve housing has a water inlet at its bottom and at least two water outlets on its sidewalls. The valve core is disposed within the cylindrical valve housing and is rotationally connected to the cylindrical valve housing. At least two water outlets are disposed on the side arms of the valve core. The valve inner core is disposed within the valve core and is rotationally connected to the valve core. At least one water outlet is disposed on the side arms of the valve inner core. An outer shell shaft seat is fixed to the top of the cylindrical valve housing, a central core shaft is fixed to the top of the valve core, and an inner core shaft is fixed to the top of the inner core shaft. The inner core shaft is disposed within the outer shell shaft seat and is rotationally connected to the outer shell shaft seat. The inner core shaft is disposed within the central core shaft and is rotationally connected to the central core shaft. The rotation angles of both the central core shaft and the inner core shaft are controlled by a controller. The distribution valve of the present invention can achieve multi-channel control using a single drive source, thereby meeting the irrigation needs of diverse crops while improving economic and environmental benefits.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural irrigation, and specifically relates to a single-drive multi-channel independent water distribution valve, which is particularly suitable for irrigation scenarios with complex terrain and large differences in crop water requirements. Background Art

[0002] Global water resources are in short supply, with agriculture accounting for over 70% of water use, yet the efficiency of traditional flood irrigation is less than 40% (according to the Food and Agriculture Organization of the United Nations). Precision water control technology is urgently needed. Crop diversity demands, for example, the water requirements of fruit trees, vegetables, and field crops vary significantly (e.g., citrus requires 8-10mm of water per day, while wheat only requires 4-6mm). Terrain adaptation challenges arise, with uneven water pressure in hilly and terraced areas, which can easily lead to insufficient irrigation or wasted runoff. Current agricultural irrigation systems generally use a multi-valve independent control architecture, which presents problems such as high equipment costs and poor coordination. Summary of the Invention

[0003] In response to the defects in the existing technology, the present invention provides a single-drive multi-channel independent water distribution valve, which can solve the pain points of unstable water pressure and large differences in water requirements of multiple crops during irrigation; it has a simple structure, low cost and reliable control.

[0004] The technical solution adopted by the present invention is: to provide a single-drive multi-channel independent water distribution valve, including a cylindrical valve housing, a valve core, a valve inner core and a controller; a water inlet is arranged at the bottom of the cylindrical valve housing, and at least two water outlets are arranged on its side wall; the valve core is arranged in the cylindrical valve housing and is rotatably connected to the cylindrical valve housing, and at least two water outlets are arranged on the side wall of the valve core; the valve inner core is arranged in the valve core and is rotatably connected to the valve core, and a water outlet is arranged on the side wall of the valve inner core, the opening angle of the water outlet of the valve core is the same as the opening angle of the water outlet of the cylindrical valve housing, and the angle of the water outlet of the valve inner core is the same as the opening angle of the water outlet of the valve core; the top of the cylindrical valve housing The outer shell shaft seat is fixed on the top, the central core shaft is fixed on the top of the valve core, and the inner core shaft is fixed on the top of the inner core shaft; the central core shaft is passed through the outer shell shaft seat and is rotatably connected to the outer shell shaft seat, and the inner core shaft is passed through the central core shaft and is rotatably connected to the central core shaft; the rotation angles of the central core shaft and the inner core shaft are both controlled by a controller; the controller includes a pair of mutually meshing incomplete gear pairs and a micromotor, the pair of incomplete gear pairs includes a first incomplete gear and a second incomplete gear, the first incomplete gear is directly connected to the inner core shaft, the second incomplete gear is connected to the central core shaft through a pair of intermediate gears, the central core shaft is driven to rotate continuously by the micromotor, and the inner core shaft rotates intermittently or differentially with the central core shaft.

[0005] Furthermore, in the single-drive multi-channel independent water distribution valve as described above, the sum of the opening angles of all water outlets on the side wall of the cylindrical valve housing is less than 180°; the sum of the opening angles of all water outlets on the side wall of the valve core is less than 180°.

[0006] Furthermore, as described above, the single-drive multi-channel independent water distribution valve has a floating elastic seal on the side wall of the valve core without a water outlet, which is used to achieve the full closing function of the distribution valve when the side wall of the valve core without a water outlet coincides with the water outlet of the cylindrical valve housing.

[0007] Furthermore, as described above, the single-drive multi-channel independent water distribution valve has several water outlet holes radially opened on the side wall of the valve core where the water outlet is not opened, corresponding to the position of the floating elastic seal, and the water pressure of the water outlet holes is used to make the floating elastic seal fit tightly with the cylindrical valve housing.

[0008] Furthermore, as described above, the single-drive multi-channel independent water distribution valve, the controller also includes a position dial and two flexible shafts, the position dial has two pointers, the two pointers are respectively connected to the central core shaft and the inner core shaft through their own flexible shafts, and are used to observe the position of the valve center core and the valve inner core.

[0009] Furthermore, as described above, the single-drive multi-channel independent water distribution valve, the controller also includes two angle encoders, which are respectively installed on the central shaft and the inner shaft for obtaining and controlling the rotation angles of the central shaft and the inner shaft.

[0010] Furthermore, as described above, the single-drive multi-channel independent water distribution valve is provided with a manual switch between the micromotor and the incomplete gear pair for manually controlling water distribution or valve closing.

[0011] The beneficial technical effects of the present invention are:

[0012] The present invention provides a cylindrical valve housing, nesting a valve core and a valve inner core in the cylindrical valve housing in sequence, providing water outlets on the cylindrical valve housing, the valve core, and the side walls of the valve inner core, respectively, and providing a central core shaft and an inner core shaft on the top of the valve core and the valve inner core, respectively. The central core shaft and the inner core shaft are driven by a micromotor to control the continuous rotation of the central core shaft and the intermittent or differential rotation of the inner core shaft with the central core shaft, thereby achieving multi-channel independent flow control through a single drive source, meeting the irrigation needs of complex terrain and large differences in crop water requirements, and improving economic and environmental benefits. The structure is simple, the cost is low, and the control is reliable. In addition, the present invention can be connected to the Internet of Things, and remote control can be achieved through the Internet of Things, becoming an intelligent ecosystem that integrates safety, efficiency, and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the single-drive multi-channel independent water distribution valve of the present invention;

[0014] Figure 2 This is a working principle diagram of the single-drive multi-channel independent water distribution valve of the present invention;

[0015] Figure 3 This is a three-dimensional diagram of the single-drive multi-channel independent water distribution valve of the present invention.

[0016] In the picture:

[0017] 1-Cylindrical valve housing 2-Valve core 3-Valve inner core 4-Center core shaft 5-Inner core shaft 6-Controller 7-Sensor 8-Quick connector 9-Connecting column 10-Casing shaft seat 21-Floating elastic seal 61-Incomplete gear pair 62-Angle encoder 63-Battery 64-Flexible shaft 65-Micromotor 66-Position dial 611-First incomplete gear 612-Second incomplete gear DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0019] It should be noted that the terms "first," "second," and the like in the specification, claims, and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the application described herein can be implemented in orders other than those illustrated or described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0020] like Figure 1 As shown, the single-drive multi-channel independent water distribution valve of the present invention includes a cylindrical valve housing 1, a valve core 2, a valve inner core 3, a core shaft 4, an inner core shaft 5 and a controller 6. A water inlet is provided at the bottom of the cylindrical valve housing 1, and at least two water outlets (preferably 2-4) are provided on its side wall. An outer shell shaft seat 10 is fixed to the top of the cylindrical valve housing 1. The valve core 2 is disposed in the cylindrical valve housing 1 and is rotatably connected to the cylindrical valve housing 1. At least two water outlets (preferably 2-4) are provided on the side wall of the valve core 2. A core shaft 4 is fixed to the top of the valve core 2. The core shaft 4 is a hollow shaft. The core shaft 4 passes through the top of the cylindrical valve housing 1 and enters the outer shell shaft seat 10 and is rotatably connected to the outer shell shaft seat 10. The valve core 3 is disposed within the valve core 2 and is rotationally connected to the valve core 2. At least one water outlet (preferably one or two) is provided on the sidewall of the valve core 3. An inner core shaft 5 is fixed to the top of the valve core 3. This inner core shaft 5 passes through the valve core 2 and enters the inner core shaft 4, where it is rotationally connected to the inner core shaft 4. The rotation angles of the inner core shaft 4 and the inner core shaft 5 are both controlled by a controller 6. Thus, the present invention meets various crop irrigation needs by combining the different positions of the water outlets of the cylindrical valve housing 1, the valve core 2, and the valve core 3.

[0021] The number of water outlets on the side wall of the cylindrical valve housing 1 is determined according to actual needs. The present invention is described with two water outlets as an example (i.e. Figure 1-Figure 3(See Channel I and Channel II in the figure). It should be noted that the sum of the opening angles of all outlets on the sidewall of the cylindrical valve housing 1 should be less than 180° to ensure the sealing of the distribution valve. The present invention utilizes a cylindrical valve housing because irrigation water contains sediment, which easily accumulates in the working parts of conventional ball valves, increasing wear on the valve core. The present invention utilizes a cylindrical valve housing, allowing sediment that is not flushed away by the water flow to sink through gravity, significantly preventing sediment from becoming stuck between the valve core and the housing, reducing wear on the valve body's moving parts, and effectively extending the service life of the distribution valve. Furthermore, to ensure fast connection, the present invention provides quick connectors 8 at the outlets of the cylindrical valve housing 1, connecting the outlets to external water pipes via these connectors. To monitor the flow rate and flow rate at each outlet and inlet, sensors 7, preferably pressure sensors, are installed at both the outlet and inlet of the cylindrical valve housing 1. These sensors measure flow rate and / or flow rate using pressure differentials and detect pipe disconnection.

[0022] The shape and specifications of the valve core 2 should be compatible with the cylindrical valve housing 1. The number of outlets on the sidewall of the valve core 2 should be the same as that of the cylindrical valve housing 1, and the opening angle of the outlets on the valve core 2 should be the same as that of the cylindrical valve housing 1 to meet control requirements. The sum of the opening angles of all outlets on the sidewall of the valve core 2 should be less than 180° to ensure the sealing of the distribution valve. The clearance between the cylindrical valve housing 1, the valve core 2, and the valve core 3 enables the valve to self-clean, but results in poor sealing between the cylindrical valve housing 1, the valve core 2, and the valve core 3. To better ensure the sealing between the valve core 2 and the cylindrical valve housing 1, the present invention installs a floating elastic seal 21 on the sidewall of the valve core 2 (this floating elastic seal 21 can slightly move radially along the valve core 2). When the sidewall of the valve core 2 with no outlets overlaps the outlet of the cylindrical valve housing 1, the distribution valve can be fully closed. This significantly reduces the machining accuracy, difficulty, and cost of the valve, reduces the resistance to valve movement, and facilitates mass production. Furthermore, to ensure a tight fit between the cylindrical valve housing 1 and the floating elastic seal 21, several radially extending water outlets are provided on the sidewalls of the valve core 2 corresponding to the floating elastic seal 21. Water pressure from these outlets ensures a tight fit between the floating elastic seal 21 and the cylindrical valve housing 1.

[0023] The shape and specifications of the valve core 3 should match those of the valve core 2. The number of water outlets on the sidewall of the valve core 3 is determined based on actual needs (this disclosure uses a single water outlet as an example). It should be noted that the angle of the sidewall of the valve core 3 without a water outlet should be the same as the angle of the opening of the water outlet on the sidewall of the valve core 2.

[0024] like Figure 3As shown, the controller 6 includes a pair of meshing incomplete gear pairs 61, two flexible shafts 64, a position dial 66, two angle encoders 62, a micromotor 65, a battery 63, and a manual switch. The incomplete gear pair 61, position dial 66, micromotor 65, and battery 63 are all fixed to the controller 6 platform at the top of the cylindrical valve housing 1 via connecting posts 9.

[0025] Among them, a pair of incomplete gear pairs 61 includes a first incomplete gear 611 and a second incomplete gear 612. The first incomplete gear 611 is directly connected to the inner core shaft 5, and the second incomplete gear 612 is connected to the inner core shaft 5 through a pair of intermediate gears ( Figure 3 The micromotor 65 is a micromotor that is driven by a micromotor 65 to rotate continuously, and the inner core shaft 5 is driven by a micromotor 65 to rotate intermittently or differentially with the micromotor 65 (due to the different transmission ratios of the first incomplete gear 611 and the second incomplete gear 612). The battery 63 is used to provide power to the micromotor 65. The micromotor 65 refers to a motor with a diameter less than 160 mm or a rated power less than 750 mW. Two angle encoders 62 are respectively installed on the central core shaft 4 and the inner core shaft 5, and are used to obtain the angular position information of the valve core and the valve inner core, and transmit the information to the control system to facilitate the determination of the valve opening position when the power is cut off and restarted. There are two pointers on the position dial 66, and the two pointers are connected to the central core shaft and the inner core shaft through their own soft shafts 64, so as to directly observe the position of the valve core 2 and the valve inner core 3 and observe the valve opening. The manual switch is installed on the transmission shaft between the micromotor 65 and the second incomplete gear, and the opening and closing of the distribution valve can be completed manually to avoid control failure due to electrical failure.

[0026] The working principle of the distributing valve of the present invention is described below:

[0027] like Figure 2 As shown, for ease of description, the angle of the single outlet opening of the cylindrical valve housing 1 is α, the angle of the single outlet opening of the valve core 2 is β, and the angle of the unopened valve core 3 is γ. From the geometric relationship, it can be seen that to ensure the sealing of the distribution valve, the sum of all the angles α of the outlets of the cylindrical valve housing 1 must be less than 180°. If there are two outlets, α is less than 90°. The opening angle β of the single outlet opening of the valve core 2 follows the same opening rule as the cylindrical valve housing 1. The angle γ of the unopened valve core 3 matches the angle β of the outlet opening of the valve core 2.

[0028] set up Figure 2The horizontal direction is the X-axis, the vertical direction is the Y-axis, and the direction perpendicular to the paper is the Z-axis. The midpoint of the side wall of valve core 2 is marked as V, and the midpoint of the side wall of valve core 3 is marked as H. When water enters the valve body along the Z-axis, if point H coincides with the Y-axis, then the maximum flow rate in channels I and II is reached. If point V does not coincide with the Y-axis and the offset angle is less than β, the flow rates in channels I and II are adjusted proportionally. If point V coincides with the Y-axis and point H coincides with the X-axis, and point H points toward channel II, channel I reaches maximum flow and channel II is closed. Changing the angle between point V and the Y-axis changes the opening of channel I, thereby adjusting the flow rate in a single channel. Similarly, the flow rate in channel II can be adjusted independently. Thus, by combining the rotational positions of valve core 2 and valve core 3, flow control can be achieved for one or more channels.

[0029] In addition, the distribution valve of the present invention can be connected to the Internet of Things to achieve remote control through the Internet of Things, thus becoming an intelligent ecosystem that integrates safety, high efficiency, and energy saving.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art can make equivalent substitutions or changes based on the technical solutions and inventive concepts disclosed by the present invention, and the resulting technical solutions should be included in the scope of protection of the present invention.

Claims

1. A single-drive multi-channel independent water distribution valve, characterized by: Including column A valve housing (1), a valve core (2), a valve inner core (3) and a controller (6); a water inlet is provided at the bottom of the cylindrical valve housing (1), and at least two water outlets are provided on its side wall; the valve inner core (2) is provided in the cylindrical valve housing (1) and is rotatably connected to the cylindrical valve housing (1), and at least two water outlets are provided on the side wall of the valve inner core (2); the valve inner core (3) is provided in the valve inner core (2) and is rotatably connected to the valve inner core (2), and one water outlet is provided on the side wall of the valve inner core (3); the opening angle of the water outlet of the valve inner core (2) is the same as the opening angle of the water outlet of the cylindrical valve housing (1), and the angle of the water outlet of the valve inner core (3) is the same as the opening angle of the water outlet of the valve inner core (2); an outer shell shaft seat (10) is fixed on the top of the cylindrical valve housing (1), a core shaft (4) is fixed on the top of the valve inner core (2), and the valve inner core (3) An inner core shaft (5) is fixed on the top; the central core shaft (4) is inserted into the outer shell shaft seat (10) and is rotationally connected to the outer shell shaft seat (10); the inner core shaft (5) is inserted into the central core shaft (4) and is rotationally connected to the central core shaft (4); the central core shaft (4) and the inner core shaft (5) are both controlled by a controller (6); the controller (6) includes a pair of mutually meshing incomplete gear pairs (61) and a micro motor (65), the pair of incomplete gear pairs (61) includes a first incomplete gear (611) and a second incomplete gear (612), the first incomplete gear (611) is directly connected to the inner core shaft (5), the second incomplete gear (612) is connected to the central core shaft (4) through a pair of intermediate gears, the central core shaft (4) is driven to rotate continuously by the micro motor (65), and the inner core shaft (5) rotates intermittently or at a differential speed with the central core shaft.

2. The single-drive multi-channel independent water distribution valve according to claim 1, characterized in that: The sum of the opening angles of all the water outlets on the side wall of the cylindrical valve housing (1) is less than 180°; the sum of the opening angles of all the water outlets on the side wall of the valve core (2) is less than 180°.

3. The single-drive multi-channel independent water distribution valve according to claim 2, characterized in that: A floating elastic sealing member (21) is provided on the side wall of the valve core (2) where no water outlet is opened, for realizing a complete closing function of the distribution valve when the side wall of the valve core (2) where no water outlet is opened coincides with the water outlet of the cylindrical valve housing (1).

4. The single drive multi-channel independent water distribution valve according to claim 3, characterized in that: A plurality of water outlet holes are radially provided on the side wall of the valve core (2) without a water outlet at positions corresponding to the floating elastic seal (21), and the floating elastic seal (21) is tightly fitted to the cylindrical valve housing (1) by utilizing the water pressure of the water outlet holes.

5. The single-drive multi-channel independent water distribution valve according to claim 4, characterized in that: The controller (6) further comprises a position dial (66) and two flexible shafts (64). The position dial (66) has two pointers, which are respectively connected to the central core shaft (4) and the inner core shaft (5) through their respective flexible shafts (64) for observing the positions of the valve central core (2) and the valve inner core (3).

6. The single-drive multi-channel independent water distribution valve according to claim 5, characterized in that: The controller (6) further comprises two angle encoders (62), which are respectively mounted on the central core shaft (4) and the inner core shaft (5) and are used to obtain and control the rotation angles of the central core shaft (4) and the inner core shaft (5).

7. The single drive multi-channel independent water distribution valve according to claim 6, characterized in that: A manual switch is provided between the micromotor (65) and the incomplete gear pair (61) for manually controlling water distribution or valve closing.

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