A three-way valve for agricultural irrigation

Abstract

This utility model provides a three-way valve for agricultural irrigation, belonging to the field of agricultural valve technology. It includes a "T"-shaped valve body and a spherical valve core located within the valve body. The valve body includes a left pipe, a right pipe, and a lower pipe connected at their ends. The valve core is located at the connecting end of the left, right, and lower pipes. Valve core ports are respectively opened on the left, right, and upper sides of the valve core. A valve stem shaft is fixed to the side wall of the valve core. A control box is fixed to the valve body, and a control motor is installed inside the control box. The control box contains a main circuit board, indicator lights, and a solar-chargeable lithium battery. A first sensor, a second sensor, and a third sensor are respectively connected to the main circuit board, extending out of the control box and inserted into the left, right, and lower pipes. The first and second sensors are both pressure-flow composite sensors. This utility model has the advantages of effectively monitoring the flow and pressure of each pipe within the valve body, easy remote control, reduced installation costs, and diverse functions.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural valve technology, specifically referring to a three-way valve for agricultural irrigation. Background Technology

[0002] In agricultural irrigation, the three-way valve is a key component for water distribution. However, three-way valves used for irrigation often only have the basic function of diverting water flow and lack the ability to monitor the flow. In actual operation, pressure gauges or flow meters need to be installed separately, resulting in inconsistent functional requirements. At the same time, for agricultural irrigation, the control part needs to be powered. In the field, power supply requires the laying of cables or independent power sources, which is difficult to meet long-term irrigation needs. Utility Model Content

[0003] The purpose of this invention is to provide a three-way valve for agricultural irrigation that satisfies the diversion effect while effectively monitoring the flow and pressure in the left and right pipes. It is also easy to control remotely, significantly reduces installation costs, and offers more diverse functions.

[0004] The purpose of this utility model is achieved as follows:

[0005] A three-way valve for agricultural irrigation includes a "T"-shaped valve body and a spherical valve core located within the valve body. The valve body includes a left pipe, a right pipe, and a lower pipe connected at their ends. The valve core is located at the connected ends of the left, right, and lower pipes. Valve core ports are respectively opened on the left, right, and upper sides of the valve core. A valve stem shaft extending out of the valve body is fixed to the side wall of the valve core. A control box is fixed on the valve body, and a control motor for driving the valve stem shaft to rotate is installed inside the control box. The control box contains a main circuit board, indicator lights, and a solar-chargeable lithium battery. A first sensor, a second sensor, and a third sensor are respectively connected to the main circuit board, extending out of the control box and inserted into the left, right, and lower pipes. The first and second sensors are both pressure-flow composite sensors.

[0006] The present invention is further configured such that the first sensor and the second sensor have the same structure. The first sensor includes a sensor base inserted into the left tube, a mounting groove is provided in the sensor base, an impeller is hinged to the bottom of the sensor base, a flow hole corresponding to the impeller is provided at the bottom of the mounting groove, a waterproof cover is provided in the mounting groove that abuts against the top of the flow hole, a pressure sensing circuit board is provided in the waterproof cover, a fixing pin for fixing the pressure sensing circuit board is inserted into the mounting groove, a wire is connected to the top of the pressure sensing circuit board, and one end of the wire is connected to the main circuit board.

[0007] The present invention is further configured such that the output end of the control motor drives the valve stem shaft to rotate via a gear set.

[0008] The present invention is further configured such that a photoelectric substrate is fixed inside the control box, the indicator light includes a photoelectric circuit board sleeved on the valve stem shaft, and the photoelectric circuit board is fixed on the photoelectric substrate, photoelectric switches are respectively arranged on the top, bottom, left and right sides of the photoelectric circuit board, and a photoelectric knob that rotates coaxially is fixed at the end of the valve stem shaft, and a trigger ring with a switch notch is formed at the bottom of the photoelectric knob.

[0009] The present invention is further configured such that a light-emitting panel is provided on the top of the photoelectric knob, and a plurality of RGB LED beads are arranged around the light-emitting panel.

[0010] The present invention is further configured such that a wireless antenna connected to the main circuit board is provided on the top of the control box.

[0011] The present invention is further provided that a mechanical switch connected to the main circuit board is provided on the back of the control box.

[0012] The present invention is further configured such that the control box includes a front cover and a rear box body, the front cover has a battery opening, a battery cover plate is screwed to the battery opening, and the lithium battery is located on the rear end face of the battery cover plate.

[0013] The present invention is further configured such that the third sensor is a pressure-temperature composite sensor.

[0014] The present invention is further configured such that a limiting ring is provided in the valve body to abut against the valve core, and a plurality of sealing rings are provided on the inner wall of the limiting ring; and water outlet connectors are screwed to both the left and right ends of the valve body.

[0015] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0016] 1. The three-way valve body provided by this utility model can effectively obtain the water flow distribution status and the load status in the pipe, and at the same time effectively realize continuous operation in the field without power supply; the rotating ball valve core provides a variety of irrigation modes.

[0017] 2. The sensor provided by this utility model adopts mechanical flow monitoring to reduce interference from sediment. At the same time, the structure of the waterproof cover and fixing pin ensures effective waterproofing of the sensing circuit board and ensures long-term use.

[0018] 3. This utility model further adopts a gear set on the output end of the control motor to increase the output torque and ensure the rotation of the valve stem shaft to achieve different water output modes.

[0019] 4. The indicator light provided by this utility model uses a point signal that generates the valve core angle at the same angle when rotating coaxially with the valve stem shaft, and indicates it with different colored LED beads, which makes it easy to confirm the water output mode and reduces maintenance time.

[0020] 5. This utility model is equipped with a wireless antenna and a mechanical switch to realize remote control and emergency manual operation.

[0021] 6. This utility model further adopts a detachable battery cover, which facilitates the replacement of lithium batteries.

[0022] 7. This utility model adopts a limiting ring design, which allows the spherical valve core to rotate within a limited range, while adding a sealing ring to prevent water leakage from the gaps. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the present invention. Figure 1 ;

[0025] Figure 3 This is a cross-sectional view of the present invention. Figure 2 ;

[0026] Figure 4 This is an exploded view of the control box of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the first sensor of this utility model;

[0028] Figure 6 This is an exploded schematic diagram of the first sensor of this utility model;

[0029] Figure 7 This is a schematic diagram of the valve core of this utility model;

[0030] Figure 8 This is a schematic diagram of the structure of the photoelectric knob of this utility model;

[0031] Figure label:

[0032] 1-Valve body; 10-Left pipe; 11-Right pipe; 12-Lower pipe; 13-Limit ring; 14-Outlet connector;

[0033] 2-Valve core; 20-Valve core port; 21-Valve stem shaft;

[0034] 3-Control box; 30-Control motor; 31-Main circuit board; 32-Gear set; 33-Optical board; 34-Wireless antenna; 35-Mechanical switch; 36-Battery cover;

[0035] 4-Indicator light; 40-Photoelectric circuit board; 41-Photoelectric switch; 42-Photoelectric knob; 420-Trigger ring; 421-Switch notch; 422-Light-emitting board;

[0036] 5-Lithium battery;

[0037] 6-First sensor; 60-Second sensor; 61-Third sensor; 62-Sensor base; 620-Mounting slot; 621-Flow orifice; 63-Impeller; 64-Waterproof cover; 65-Pressure sensing circuit board; 66-Fixing pin. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1 — Figure 8 :

[0039] A three-way valve for agricultural irrigation includes a "T"-shaped valve body 1 and a spherical valve core 2 located inside the valve body 1. The valve body 1 includes a left pipe 10, a right pipe 11, and a lower pipe 12 connected at their ends. The valve core 2 is located at the end where the left pipe 10, right pipe 11, and lower pipe 12 are connected. Valve core ports 20 are respectively opened on the left, right, and upper sides of the valve core 2. A valve stem shaft 21 extending out of the valve body 1 is fixed to the side wall of the valve core 2. A control box 3 is fixed on the valve body 1, and a control motor 30 for driving the valve stem shaft 21 to rotate is provided inside the control box 3. The control box 3 is provided with a main circuit board 31, an indicator light 4, and a solar-chargeable lithium battery 5. A first sensor 6, a second sensor 60, and a third sensor 61 are respectively connected to the main circuit board 31, extending out of the control box 3 and inserted into the left pipe 10, right pipe 11, and lower pipe 12. The first sensor 6 and the second sensor 60 are both pressure-flow composite sensors.

[0040] During use, the control box 3 is used to provide status display, and the control motor inside it is used to control the rotation of the valve stem shaft 21. By rotating the valve stem shaft, the valve core in the valve body 1 can achieve different directions and achieve different water output effects.

[0041] This includes the following water outlet methods:

[0042] When the three valve core ports 20 correspond to the left pipe, right pipe and lower pipe respectively, the water in the lower pipe flows out from the two ends of the left pipe and right pipe respectively.

[0043] When the three valve core ports 20 correspond to the left pipe, the lower pipe and the top respectively, the water in the lower pipe only flows out from the left pipe;

[0044] When the three valve core ports 20 correspond to the right pipe, the lower pipe and the top respectively, the water in the lower pipe flows out only from the right pipe;

[0045] When the three valve core ports 20 correspond to the left pipe, right pipe and top respectively, water will no longer flow from the left pipe and right pipe.

[0046] The drive motor used to control the valve core can be a reciprocating motor, which drives the valve stem shaft to rotate by 90° as a separate stroke, thereby enabling the switching of different water outputs.

[0047] Furthermore, the first and second sensors located in the left pipe 10 and the right pipe 11 are pressure and flow composite sensors to realize the effective distribution of fireball water flow in the outlet pipe of the three-way valve body and the load status in the pipe.

[0048] The control box allows it to operate independently in the field, effectively enabling continuous operation in environments without power.

[0049] A solar panel slot is provided on the top of the valve body, and the lithium battery is charged by connecting the solar panel placed in the solar panel slot through a wire extending out of the control box.

[0050] like Figure 5 and Figure 6 As shown, the first sensor 6 and the second sensor 60 have the same structure. The first sensor 6 includes a sensor base 62 inserted into the left tube 10. The sensor base 62 has a mounting groove 620. An impeller 63 is hinged to the bottom of the sensor base 62. A flow hole 621 corresponding to the impeller 63 is opened at the bottom of the mounting groove 620. A waterproof cover 64 is provided in the mounting groove 620 and abuts against the top of the flow hole 621. A pressure sensing circuit board 65 is provided in the waterproof cover 64. A fixing pin 66 for fixing the pressure sensing circuit board 65 is inserted into the mounting groove 620. A wire is connected to the top of the pressure sensing circuit board 65. One end of the wire is connected to the main circuit board 31.

[0051] In the above structure, the composite sensor adopts mechanical flow monitoring to reduce sediment interference. The rotation of the impeller creates a pressure difference between the upper and lower orifices of the flow orifice 621, thereby generating pressure and speed signals. A waterproof cover 64 effectively protects the pressure sensing circuit board 65 from water, ensuring stable operation. Furthermore, it is reinforced with fixing pins to prevent it from floating up and down within the mounting groove 620 due to pressure differences.

[0052] Preferably, the output of the control motor 30 drives the valve stem shaft 21 to rotate via a gear set 32. The gear set uses a pre-installed plastic shaft within a housing, facilitating the installation of each gear. The gear set design effectively amplifies the torque of the control motor 30, thereby effectively rotating the valve stem shaft.

[0053] Preferably, a photoelectric substrate 33 is fixed inside the control box 3, and the indicator light 4 includes a photoelectric circuit board 40 sleeved on the valve stem shaft 21, and the photoelectric circuit board 40 is fixed on the photoelectric substrate 33. Photoelectric switches 41 are respectively arranged on the top, bottom, left and right sides of the photoelectric circuit board 40. A photoelectric knob 42 that rotates coaxially is fixed to the end of the valve stem shaft 21, and a trigger ring 420 with a switch notch 421 is formed at the bottom of the photoelectric knob 42.

[0054] During implementation, the valve stem shaft driven by the motor drives the synchronous rotation of the light strip knob. During the rotation, the switch notch 421 corresponds to the corresponding photoelectric switch, so that the switch 41 is in a closed state, realizing the photoelectric switching and light emission effect at the corresponding position. The corresponding light emission position allows users to observe the water output status in time, and also reduces maintenance time.

[0055] Preferably, the top of the photoelectric knob 42 is provided with a light-emitting panel 422, and the light-emitting panel 422 is provided with a plurality of RGB LED beads arranged circumferentially. Different color LED beads can achieve different prompting effects.

[0056] Preferably, the top of the control box 3 is provided with a wireless antenna 34 connected to the main circuit board 31. This facilitates remote adjustment of the water outlet mode.

[0057] Preferably, a mechanical switch 35 connected to the main circuit board 31 is provided on the back of the control box 3. This allows for convenient manual operation in an emergency.

[0058] Preferably, the control box 3 includes a front cover and a rear box body. The front cover has a battery opening, and a battery cover plate 36 is screwed onto the battery opening. The lithium battery 5 is located on the rear end face of the battery cover plate.

[0059] In the above structure, the user can open the battery cover 36 at the battery opening with a flathead screwdriver or by hand and replace the lithium battery by plugging it in; alternatively, a non-rechargeable battery can be used, but a large capacitor needs to be configured on the main circuit board so that the motor can be operated and controlled without a lithium battery.

[0060] Preferably, the third sensor 61 is a pressure-temperature composite sensor, used to detect the water temperature and pressure status of the main pipeline.

[0061] Preferably, a limiting ring 13 is provided inside the valve body 1 to abut against the valve core 2, and the inner wall of the limiting ring 13 is provided with several sealing rings; water outlet connectors 14 are screwed to both the left and right ends of the valve body 1. The design of the limiting ring allows the spherical valve core to rotate within a limited range, while the addition of sealing rings prevents water leakage from gaps.

[0062] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. An agricultural irrigation three-way valve comprising a "T" shaped valve body (1) and a ball shaped spool (2) located in the valve body (1), characterized in that, The valve body (1) includes a left pipe (10), a right pipe (11), and a lower pipe (12) connected at their ends. The valve core (2) is located at the end where the left pipe (10), right pipe (11), and lower pipe (12) are connected. The valve core (2) has valve core ports (20) on its left, right, and upper sides. A valve stem shaft (21) extending out of the valve body (1) is fixed to the side wall of the valve core (2). A control box (3) is fixed on the valve body (1), and the control box (3) is provided with a device for driving the valve stem shaft. (21) A rotating control motor (30) is provided in the control box (3), which contains a main circuit board (31), an indicator light (4) and a lithium battery (5) that is solar-charged. The main circuit board (31) is connected to a first sensor (6), a second sensor (60) and a third sensor (61) that extend out of the control box (3) and are inserted into the left tube (10), the right tube (11) and the lower tube (12). The first sensor (6) and the second sensor (60) are both pressure and flow composite sensors.

2. An agricultural irrigation tee valve according to claim 1, wherein, The first sensor (6) and the second sensor (60) have the same structure. The first sensor (6) includes a sensor base (62) inserted into the left tube (10). The sensor base (62) has an installation groove (620). An impeller (63) is hinged to the bottom of the sensor base (62). A flow hole (621) corresponding to the impeller (63) is opened at the bottom of the installation groove (620). A waterproof cover (64) that abuts against the top of the flow hole (621) is provided in the installation groove (620). A pressure sensing circuit board (65) is provided in the waterproof cover (64). A fixing pin (66) for fixing the pressure sensing circuit board (65) is inserted into the installation groove (620). A wire is connected to the top of the pressure sensing circuit board (65). One end of the wire is connected to the main circuit board (31).

3. An agricultural irrigation tee valve as defined in claim 1 wherein, The output of the control motor (30) drives the valve stem shaft (21) to rotate through the gear set (32).

4. A three-way valve for agricultural irrigation according to claim 3, characterized in that, The control box (3) has a photoelectric substrate (33) fixed inside. The indicator light (4) includes a photoelectric circuit board (40) sleeved on the valve stem shaft (21) and the photoelectric circuit board (40) is fixed on the photoelectric substrate (33). Photoelectric switches (41) are respectively provided on the top, bottom, left and right sides of the photoelectric circuit board (40). A photoelectric knob (42) that rotates coaxially is fixed at the end of the valve stem shaft (21). The bottom of the photoelectric knob (42) is formed with a trigger ring (420) with a switch notch (421).

5. A three-way valve for agricultural irrigation according to claim 4, characterized in that, The top of the photoelectric knob (42) is provided with a light-emitting panel (422), and the light-emitting panel (422) is provided with a number of RGB LED beads in the circumference.

6. A three-way valve for agricultural irrigation according to claim 1, characterized in that, The top of the control box (3) is provided with a wireless antenna (34) that is connected to the main circuit board (31).

7. A three-way valve for agricultural irrigation according to claim 1, characterized in that, The back of the control box (3) is provided with a mechanical switch (35) that is connected to the main circuit board (31).

8. A three-way valve for agricultural irrigation according to claim 1, characterized in that, The control box (3) includes a front cover and a rear box body. The front cover has a battery opening, and a battery cover plate (36) is screwed into the battery opening. The lithium battery (5) is located on the rear end face of the battery cover plate.

9. A three-way valve for agricultural irrigation according to claim 1, characterized in that, The third sensor (61) is a pressure-temperature composite sensor.

10. A three-way valve for agricultural irrigation according to claim 1, characterized in that, The valve body (1) is provided with a limiting ring (13) that abuts against the valve core (2), and the inner wall of the limiting ring (13) is provided with several sealing rings; both the left and right ends of the valve body (1) are screwed with water outlet connectors (14).

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