Single-drive multi-channel independent water distribution valve

Abstract

The invention relates to a single-drive multi-channel independent water distribution valve which comprises a cylindrical valve shell, a valve middle core, a valve inner core and a controller. A water inlet is formed in the bottom of the cylindrical valve shell, and at least two water outlets are formed in the side wall of the cylindrical valve shell; the valve core is arranged in the cylindrical valve shell and is rotationally connected with the cylindrical valve shell, and at least two water outlets are formed in a side arm of the valve core; the valve inner core is arranged in the valve middle core and is rotationally connected with the valve middle core; at least one water outlet is formed in a side arm of the valve inner core; an outer shell shaft seat is fixed to the top of the cylindrical valve shell, a middle core shaft is fixed to the top of the valve middle core, and an inner core shaft is fixed to the top of the inner core shaft. The middle core shaft is arranged in the shell shaft seat in a penetrating manner and is rotationally connected with the shell shaft seat; the inner core shaft is arranged in the middle core shaft in a penetrating manner and is rotationally connected with the middle core shaft; and the rotating angles of the middle core shaft and the inner core shaft are controlled by a controller. According to the distribution valve, multi-channel control can be achieved through one driving source, the diversified irrigation requirements of crops are met, and economic and environmental benefits are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural irrigation, and in particular 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] Crop diversity needs, for example, the water requirements of fruit trees, vegetables, and field crops vary significantly (for example, the average daily water requirement of citrus is 8-10mm, while that of wheat is only 4-6mm). Terrain adaptation challenges, uneven water pressure in hilly and terraced areas can easily lead to insufficient irrigation or waste of runoff. Current agricultural irrigation systems generally adopt a multi-valve independent control architecture, which has problems such as high equipment cost and poor coordination. Although US20220136817A1 proposes a gear-clutch linkage solution, its energy consumption and maintenance costs are difficult to meet the needs of large-scale applications; CN112984305A adopts a rotary time-sharing control solution, relying on mechanical rotary time-sharing operation, but the ability to adjust multiple channels at the same time is poor; JP2020159403A implements a mechanical linkage device for linear push rod distribution, but has high requirements for installation accuracy, and field mud can easily cause the push rod to get stuck, resulting in insufficient reliability. Summary of the invention

[0003] In view of the defects existing in the prior art, 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 shell, a valve core, a valve inner core and a controller; a water inlet is arranged at the bottom of the cylindrical valve shell, and at least two water outlets are arranged on the side wall thereof; the valve core is arranged in the cylindrical valve shell and is rotationally connected to the cylindrical valve shell, and at least two water outlets are arranged on the side arm of the valve core; the valve inner core is arranged in the valve core and is rotationally connected to the valve core, and at least one water outlet is arranged on the side arm of the valve inner core; an outer shell shaft seat is fixed on the top of the cylindrical valve shell, a central core shaft is fixed on the top of the valve core, and an 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 rotationally connected to the outer shell shaft seat, and the inner core shaft is passed through the central core shaft and is rotationally connected to the central core shaft; the rotation angles of the central core shaft and the inner core shaft are both controlled by the controller.

[0005] Furthermore, as described above in the single-drive multi-channel independent water distribution valve, 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; the angle of the unopened water outlet of the valve core is the same as the opening angle of the water outlet of the valve core.

[0006] Furthermore, in the single-drive multi-channel independent water distribution valve as described above, the sum of the opening angles of all the water outlets on the side wall of the cylindrical valve housing is less than 180°; the sum of the opening angles of all the water outlets on the side wall of the valve core is less than 180°.

[0007] Furthermore, as described above, in the single-drive multi-channel independent water distribution valve, a floating elastic seal is provided on the side wall of the valve core without a water outlet, which is used to realize the full closing function of the distribution valve when the side arm of the valve core without a water outlet coincides with the water outlet of the cylindrical valve housing.

[0008] Furthermore, as described above, a single-drive multi-channel independent water distribution valve has a plurality of water outlet holes radially opened on the side wall of the valve core without a water outlet 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.

[0009] Furthermore, as described above in the single-drive multi-channel independent water distribution valve, the controller includes a pair of incomplete gear pairs meshing with each other, and the two incomplete gears of the pair of incomplete gear pairs are respectively fixed on the inner core shaft and the middle core shaft, one of the incomplete gears drives the middle core shaft to rotate continuously, and the other incomplete gear drives the inner core shaft to rotate intermittently or differentially with the middle core shaft.

[0010] 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.

[0011] 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, and are used to obtain and control the rotation angles of the central shaft and the inner shaft.

[0012] Furthermore, as described above for the single-drive multi-channel independent water distribution valve, the controller also includes a micromotor, and the micromotor drives an incomplete gear pair transmission.

[0013] 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.

[0014] The beneficial technical effects of the present invention are:

[0015] The present invention sets a cylindrical valve shell, nests the valve core and the valve inner core in the cylindrical valve shell in sequence, sets water outlets on the cylindrical valve shell, the valve core and the side wall of the valve inner core respectively, sets a central core shaft and an inner core shaft on the top of the valve core and the valve inner core respectively, and the central core shaft and the inner core shaft are driven by a micro motor 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 realizing multi-channel independent flow control through a single driving 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 integrating safety, efficiency, and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the single-drive multi-channel independent water distribution valve of the present invention;

[0017] Figure 2 This is a working principle diagram of the single-drive multi-channel independent water distribution valve of the present invention;

[0018] Figure 3 It is a three-dimensional diagram of the single-drive multi-channel independent water distribution valve of the present invention.

[0019] In the figure:

[0020] 1- cylindrical valve housing 2- valve core 3- valve inner core 4- core shaft 5- inner shaft 6- controller 7- sensor 8- quick connection 9- connecting column 10- housing shaft seat 21- floating elastic seal 61- incomplete gear pair 62- angle encoder 63- battery 64- flexible shaft 65- micro motor 66- position dial 611- first incomplete gear 612- second incomplete gear DETAILED DESCRIPTION

[0021] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0022] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence, and it should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0023] like Figure 1As shown, it is a single-drive multi-channel independent water distribution valve of the present invention, which 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 arranged at the bottom of the cylindrical valve housing 1, and at least two water outlets (preferably 2-4) are arranged on its side wall, and an outer shell shaft seat 10 is fixed on the top of the cylindrical valve housing 1. The valve core 2 is arranged in the cylindrical valve housing 1 and is rotatably connected to the cylindrical valve housing 1, and at least two water outlets (preferably 2-4) are arranged on the side wall of the valve core 2, and a core shaft 4 is fixed on the top of the valve core 2, and the core shaft 4 is a hollow shaft, and the core shaft 4 passes through the top of the cylindrical valve housing 1 into the outer shell shaft seat 10 and is rotatably connected to the outer shell shaft seat 10. The valve core 3 is arranged in the valve core 2 and is rotatably connected to the valve core 2. At least one water outlet (preferably 1-2) is arranged on the side wall of the valve core 3. An inner core shaft 5 is fixed on the top of the valve core 3. The inner core shaft 5 passes through the valve core 2 and enters the central core shaft 4 and is rotatably connected to the central core shaft 4. The rotation angles of the central core shaft 4 and the inner core shaft 5 are controlled by the controller 6. Therefore, the present invention meets various crop irrigation needs through the different position combinations of the water outlet of the cylindrical valve housing 1, the water outlet of the valve core 2 and the water outlet of the valve core 3.

[0024] 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 by taking two water outlets as an example (i.e. Figure 1-Figure 3 Ⅰ and Ⅱ shown in the figure). It should be noted that the sum of the opening angles of all the outlets on the side wall of the cylindrical valve housing 1 should be less than 180° to ensure the sealing of the distribution valve. The reason why the present invention adopts a cylindrical valve housing is that the irrigation water contains sediment, and the working parts of the traditional ball valve are very easy to deposit sediment, which increases the wear of the valve core. The present invention adopts a cylindrical valve housing, which can sink the sediment that is not washed away by the water flow through gravity, thereby greatly avoiding the sediment stuck between the valve core and the valve housing, reducing the wear of the moving parts of the valve body, and effectively extending the service life of the distribution valve. In addition, in order to ensure the connection speed, the present invention is provided with a quick connection 8 at the outlet of the cylindrical valve housing 1, and the outlet on the cylindrical valve housing 1 is connected to the external water pipe through the quick connection 8. In order to monitor the flow rate and flow rate of each outlet and inlet, the present invention installs a sensor 7 at the outlet and inlet of the cylindrical valve housing 1, preferably a pressure sensor, to obtain the flow rate and / or flow rate through the pressure difference, and monitor whether the pipe is disconnected.

[0025] The shape and specification of the valve core 2 should be compatible with the cylindrical valve housing 1. The number of water outlets on the side wall of the valve core 2 should be the same as the number of water outlets on the cylindrical valve housing 1, and the opening angle of the water outlet of the valve core 2 should be the same as the opening angle of the water outlet of the cylindrical valve housing 1, so as to meet the control requirements. The sum of the opening angles of all water outlets on the side wall of the valve core 2 is less than 180°, ensuring the sealing of the distribution valve. Because there is a gap between the cylindrical valve housing 1, the valve core 2, and the valve inner core 3, the gap can enable the valve to have a self-cleaning function, but it leads to poor sealing between the cylindrical valve housing 1, the valve core 2, and the valve inner core 3. Therefore, in order to better ensure the sealing between the valve core 2 and the cylindrical valve housing 1, the present invention is equipped with a floating elastic seal 21 on the side wall of the valve core 2 (the floating elastic seal 21 can move slightly along the radial direction of the valve core 2). When the side arm of the valve core 2 without opening the water outlet coincides with the water outlet of the cylindrical valve housing 1, the distribution valve can be fully closed. Thus, the machining accuracy, difficulty and cost of the valve can be greatly reduced, the resistance to driving the valve body to move is reduced, and it is conducive to mass promotion and use. In addition, in order to ensure the close fit between the cylindrical valve housing 1 and the floating elastic seal 21, a plurality of water outlet holes are radially opened on the side wall corresponding to the valve core 2 and the floating elastic seal 21, and the water pressure of the water outlet holes is used to make the floating elastic seal 21 and the cylindrical valve housing 1 closely fit.

[0026] The shape and specification of the valve core 3 should be compatible with the shape and specification of the valve core 2. The number of water outlets on the side wall of the valve core 3 is determined according to actual needs (the present invention is described by taking one water outlet as an example). It should be noted that the angle of the side wall 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 side wall of the valve core 2.

[0027] like Figure 3 As 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 micro motor 65, a battery 63 and a manual switch. The pair of incomplete gear pairs 61, the position dial 66, the micro motor 65 and the battery 63 are all fixed on the controller 6 platform at the top of the cylindrical valve housing 1 through a connecting column 9.

[0028] 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, and the second incomplete gear 612 is connected to the inner core shaft 5 through a pair of intermediate gears ( Figure 3The micromotor 65 is used to drive the micromotor 65 to rotate continuously, and the inner core shaft 5 rotates intermittently or differentially with the micromotor 65 (because the transmission ratios of the first incomplete gear 611 and the second incomplete gear 612 are different). The battery 63 is used to provide power to the micromotor 65. The micromotor 65 refers to a motor with a diameter less than 160mm or a rated power less than 750mW. Two angle encoders 62 are respectively installed on the central core shaft 4 and the inner core shaft 5, which 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 then 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 respective 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.

[0029] The working principle of the distribution valve of the present invention is described below:

[0030] like Figure 2 As shown, for the convenience of description, the single outlet opening angle of the cylindrical valve housing 1 is α, the single outlet opening angle of the valve core 2 is β, and the unopened angle of the valve core 3 is γ. It can be seen from the geometric relationship that in order to ensure the sealing of the distribution valve, the sum of all the angles α of the outlet of the cylindrical valve housing 1 is <180°, and if there are two outlets, α<90°; the opening rule of the single outlet opening angle β of the valve core 2 is the same as that of the cylindrical valve housing 1, and the unopened angle γ of the valve core 3 is adapted to the outlet opening angle β of the valve core 2.

[0031] set up Figure 2 The 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 the valve core 2 is marked as V, and the midpoint of the side wall of the valve core 3 is marked as H. When water enters the valve body along the Z-axis direction, if the H point coincides with the Y-axis, if the V point coincides with the Y-axis at this time, it is the maximum flow position of channels I and II; if the V point does not coincide with the Y-axis and the offset angle is less than β, the flow of channels I and II is adjusted according to the angle ratio; if the V point coincides with the Y-axis, the H point coincides with the X-axis, and the H point points to the direction of channel II, at this time, channel I is the maximum flow, and channel II is closed; if the angle between the V point and the Y-axis is changed at this time, the opening of channel I can be changed, thereby realizing the adjustment of the flow of a single channel. Similarly, the flow of channel II can be adjusted separately. It can be seen that through the combination of the rotation positions of the valve core 2 and the valve core 3, the flow control of one channel or multiple channels can be realized.

[0032] In addition, the distribution valve of the present invention can be connected to the Internet of Things, and remote control can be achieved through the Internet of Things, thus becoming an intelligent ecosystem that integrates safety, high efficiency, and energy saving.

[0033] The above is only a preferred embodiment of the present invention, but the protection scope 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 obtained technical solutions should be included in the protection scope 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 arranged at the bottom of the cylindrical valve housing (1), and at least two water outlets are arranged on the side wall thereof; the valve core (2) is arranged in the cylindrical valve housing (1) and is rotatably connected to the cylindrical valve housing (1), and at least two water outlets are arranged on the side arm of the valve core (2); the valve inner core (3) is arranged in the valve core (2) and is rotatably connected to the valve core (2), and at least one water outlet is arranged on the side arm of the valve core (3). Water outlet; an outer shell shaft seat (10) is fixed on the top of the cylindrical valve housing (1), a center core shaft (4) is fixed on the top of the valve core (2), and an inner core shaft (5) is fixed on the top of the inner core shaft (5); the center core shaft (4) is inserted into the outer shell shaft seat (10) and is rotatably connected to the outer shell shaft seat (10), and the inner core shaft (5) is inserted into the center core shaft (4) and is rotatably connected to the center core shaft (4); the rotation angles of the center core shaft (4) and the inner core shaft (5) are both controlled by a controller (6).

2. The single-drive multi-channel independent water distribution valve according to claim 1, characterized in that: The opening angle of the water outlet of the valve core (2) is the same as that of the water outlet of the cylindrical valve housing (1); the opening angle of the unopened water outlet of the valve inner core (3) is the same as that of the water outlet of the valve core (2).

3. The single-drive multi-channel independent water distribution valve according to claim 2, 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°.

4. The single-drive multi-channel independent water distribution valve according to claim 3, characterized in that: A floating elastic sealing member (21) is provided on the side wall of the valve core (2) without a water outlet, and is used to realize a fully closed function of the distribution valve when the side arm of the valve core (2) without a water outlet overlaps with the water outlet of the cylindrical valve housing (1).

5. The single-drive multi-channel independent water distribution valve according to claim 4, 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.

6. The single-drive multi-channel independent water distribution valve according to any one of claims 1 to 5, characterized in that: The controller (6) comprises a pair of incomplete gear pairs (61) meshing with each other, wherein two incomplete gears of the pair of incomplete gear pairs (61) are respectively fixed on the inner core shaft (5) and the central core shaft (4), wherein one incomplete gear drives the central core shaft (4) to rotate continuously, and the other incomplete gear drives the inner core shaft (5) to rotate intermittently or at a differential speed with the central core shaft (4).

7. The single-drive multi-channel independent water distribution valve according to claim 6, 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 center core shaft (4) and the inner core shaft (5) through their respective flexible shafts (64) and are used to observe the positions of the valve center core (2) and the valve inner core (3).

8. The single-drive multi-channel independent water distribution valve according to claim 7, 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).

9. The single-drive multi-channel independent water distribution valve according to claim 8, characterized in that: The controller (6) also includes a micro motor (65), which drives the incomplete gear pair (61) for transmission.

10. The single-drive multi-channel independent water distribution valve according to claim 9, 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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