Water outlet tap for farmland irrigation

Abstract

The utility model discloses a kind of water outlet plug for farmland irrigation, including plug body and the water outlet pipe being set to the both sides of plug body, plug body bottom is provided with water inlet, plug body top is formed exhaust cavity by protruding upwards, the exhaust cavity is communicated with plug body inside, float ball is set in exhaust cavity, and can slide up and down along exhaust cavity;The inner bottom of exhaust cavity is provided with limiting protrusion for preventing float ball from sliding out, the outside of exhaust cavity is provided with exhaust cap, exhaust cap center is provided with exhaust hole, the diameter of the exhaust hole is less than the diameter of float ball, sealing ring is set at the exhaust hole of exhaust cap, the sealing ring can be tightly attached with float ball after float ball rises, to realize the sealing of exhaust hole, avoid irrigation water leakage, reduce water resource and energy consumption waste, improve irrigation efficiency.Air is discharged from exhaust hole when irrigating, can avoid generating water hammer effect, to better protect pipeline and water outlet plug, guarantee water flow steady and uniform.

Description

Technical Field

[0001] This utility model relates to the field of farmland irrigation technology, and in particular to a water outlet valve for farmland irrigation. Background Technology

[0002] In agricultural production, farmland irrigation systems are crucial infrastructure for ensuring crop growth. Water outlets (also called drains or outlets) are a common type of water outlet device in irrigation systems, functioning to provide pressurized water to surface irrigation pipes, acting as a conduit connecting the surface and underground. However, existing farmland irrigation water outlets generally lack air venting capabilities. During water transport, sudden valve opening or closing, or pump shutdowns, cause significant fluctuations in water flow velocity and pressure within the outlet, easily leading to water hammer. Water hammer impacts the pipes and outlets, causing severe damage and reducing their lifespan.

[0003] To address the aforementioned issues, some existing technologies include designs for venting water from pipelines, such as installing vent valves at high points on the main water supply pipeline. However, these devices are complex in structure, costly, and not readily applicable to the outlet valves of farmland irrigation systems. Summary of the Invention

[0004] This utility model provides a water outlet for farmland irrigation, which features a simple structure, ease of use, and automatic air venting to prevent water hammer. The specific technical solution is as follows: A water outlet valve for farmland irrigation includes a valve body and water outlet pipes disposed on both sides of the valve body. The valve body has an inlet at its bottom and an upward-protruding venting chamber at its top, which communicates with the interior of the valve body. A float is disposed within the venting chamber and can slide up and down along it. A limiting protrusion to prevent the float from sliding out is provided at the bottom of the venting chamber. An venting cap is provided on the outside of the venting chamber, with a venting hole at its center. The diameter of the venting hole is smaller than the diameter of the float. A sealing ring is provided at the venting hole of the venting cap, which can tightly fit against the float after it rises to seal the venting hole.

[0005] Furthermore, the number of limiting protrusions is four, which are evenly distributed along the circumferential direction at the bottom of the exhaust chamber to prevent the float from sliding out of the exhaust chamber.

[0006] Furthermore, the exhaust chamber has an external thread on its exterior, and the exhaust cap has an internal thread that mates with the external thread of the exhaust chamber. The exhaust cap is threadedly connected to the exhaust chamber.

[0007] Furthermore, the inner top of the vent cap is provided with an annular groove, and the top edge of the sealing ring is provided with an annular protrusion that matches the annular groove of the vent cap. The annular protrusion of the sealing ring is inserted into the annular groove, and the float rises and fits tightly with the sealing ring to prevent water from flowing out from the vent hole.

[0008] Furthermore, the inner diameter of the sealing ring is the same as the diameter of the vent hole, both of which are smaller than the diameter of the float. After the float rises, its top fits tightly against the sealing ring.

[0009] Furthermore, the plug body and the water outlet pipes on both sides are an integral structure. The outer surface of the water outlet pipe is provided with external threads, and the port of the water supply pipe is provided with internal threads that match the external threads of the water outlet pipe. The water supply pipe and the water outlet pipe are threadedly connected.

[0010] Furthermore, reinforcing ribs are provided on both sides of the upper end of the hydrant body to increase the overall strength of the hydrant.

[0011] Furthermore, to facilitate the rotation of the exhaust cap, raised ridges are provided on the outer wall of the exhaust cap.

[0012] This utility model has a simple structure and reasonable design. The vent cap has a built-in sealing ring. The tight fit between the float and the sealing ring can improve the sealing effect of the vent hole to prevent irrigation water leakage. During irrigation, air is discharged from the vent hole. After venting, the float and the sealing ring are tightly fitted to achieve a seal. It has the advantages of low cost, low failure rate, and can avoid water hammer effect, thereby better protecting the pipe and water outlet, ensuring stable and uniform water flow, reducing water and energy waste, improving irrigation efficiency, and extending service life. Attached Figure Description

[0013] Figure 1 This is a three-dimensional representation of the present invention. Figure 1 ; Figure 2 This is a three-dimensional representation of the present invention. Figure 2 ; Figure 3 This is a side view of the present invention; Figure 4 yes Figure 3 A cross-sectional view of surface AA; Figure 5 This is an exploded structural diagram of the present invention; Figure 6 This is a schematic diagram of the exhaust cap of this utility model; Figure 7 This is a schematic diagram of the sealing ring of this utility model; Figure 8 This utility model relates to a three-dimensional float after it rises. Figure 1 ; Figure 9This utility model relates to a three-dimensional float after it rises. Figure 2 . Detailed Implementation

[0014] To better understand the purpose, function, and specific design of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of the irrigation faucet for farmland.

[0015] like Figures 1-5 As shown, the irrigation hydrant of this utility model includes a hydrant body 1 and outlet pipes 2 disposed on both sides of the hydrant body 1. An inlet 11 is provided at the bottom of the hydrant body 1, and an upward-protruding venting chamber 7 is formed at the top of the hydrant body 1. The venting chamber 7 is connected to the interior of the hydrant body 1. A float 4 is disposed within the venting chamber 7 and can slide up and down along the venting chamber 7. A limiting protrusion 6 is provided at the bottom inner side of the venting chamber 7 to prevent the float 4 from sliding out. An venting cap 3 is provided on the outside of the venting chamber 7, and a venting hole 31 is provided at the center of the venting cap 3. The diameter of the venting hole 31 is smaller than the diameter of the float 4. A sealing ring 5 is provided at the venting hole 31 of the venting cap 3. The sealing ring 5 can tightly fit against the float 4 after the float 4 rises, thereby sealing the venting hole 31.

[0016] Specifically, such as Figure 2 and Figure 4 As shown, there are four limiting protrusions 6, which are evenly distributed along the circumferential direction at the bottom of the exhaust chamber 7 to prevent the float 4 from sliding out of the exhaust chamber 7.

[0017] like Figures 4-6 As shown, the exhaust chamber 7 has an external thread on its exterior, and the exhaust cap 3 has an internal thread that mates with the external thread of the exhaust chamber 7. The exhaust cap 3 is threadedly connected to the exhaust chamber 7. To facilitate rotation of the exhaust cap 3, a raised ridge 33 is also provided on the outer wall of the exhaust cap 3.

[0018] like Figure 4 , Figure 6 and Figure 7 As shown, the inner top of the vent cap 3 is provided with an annular groove 32, and the top edge of the sealing ring 5 is provided with an annular protrusion 51 that matches the annular groove 32 of the vent cap 3. The annular protrusion 51 of the sealing ring 5 is inserted into the annular groove 32. After the float 4 rises, it fits tightly with the sealing ring 5 to prevent water from flowing out from the vent hole 31.

[0019] The inner diameter of the sealing ring 5 is the same as the diameter of the vent hole 31, both of which are smaller than the diameter of the float 4. After the float 4 rises, its top fits tightly against the sealing ring 5.

[0020] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the plug body 1 and the water outlet pipes 2 on both sides are an integral structure. The outer surface of the water outlet pipe 2 is provided with external threads 21. The port of the water supply pipe is provided with internal threads that match the external threads 21 of the water outlet pipe 2. The water supply pipe is threadedly connected to the water outlet pipe 2.

[0021] The upper ends of the hydrant body 1 are provided with reinforcing ribs 12 to increase the overall strength of the hydrant.

[0022] In use, the water outlet is installed on the irrigation outlet pipe. When the irrigation system is started, the water flow carries air from the pipe into the outlet body 1. The air rises to the vent chamber 7. At this time, the water level in the outlet body 1 is low, and the float 4 is in a falling state under its own weight. The vent hole 31 at the top of the vent cap 3 is open, and the air is discharged from the vent hole 31. As the water flow continues to fill in, the air in the pipe is continuously discharged, and the water level gradually rises. This process avoids the air being compressed by the water flow to form a high-pressure air mass, thus preventing water hammer impact caused by air blockage when irrigation starts.

[0023] When the plug body 1 is filled with water and all air is expelled, the water level rises and fills the vent chamber 7. The float 4 rises along the vent chamber 7 under buoyancy, tightly fitting against the sealing ring 5, thus sealing the vent hole 31 (e.g., Figure 8 and Figure 9 As shown in the figure, the sealed venting structure prevents water from leaking out of the vent 31, ensuring stable water pressure and water delivery efficiency in the irrigation system.

[0024] When the irrigation system stops supplying water, valves are closed, or the water flow rate changes abruptly, the water pressure in the pipes drops instantly. Gases dissolved in the water may be released, or negative pressure may form locally within the pipes, causing air to be drawn back in. At this time, the water level in the pipes drops slightly, and the float 4 falls with the water level, reopening the vent 31, allowing the released gas or drawn-back air to be expelled promptly. Once the system water pressure recovers and the water level rises again, the float 4 rises again to close the vent 31, preventing the risk of secondary water hammer caused by air accumulation in the pipes during flow rate changes.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water outlet valve for farmland irrigation, comprising a valve body and water outlet pipes disposed on both sides of the valve body, characterized in that, The throttle body has an inlet at its bottom and an upward-protruding vent at its top, which is connected to the interior of the throttle body. A float is placed inside the vent and can slide up and down along the vent. A limiting protrusion is provided at the bottom of the vent to prevent the float from sliding out. An vent cap is provided on the outside of the vent, and a vent hole is provided at the center of the vent cap. The diameter of the vent hole is smaller than the diameter of the float. A sealing ring is provided at the vent hole of the vent cap. The sealing ring can fit tightly against the float after it rises to seal the vent hole.

2. The irrigation faucet for farmland as described in claim 1, characterized in that, The number of limiting protrusions is four, which are evenly distributed along the circumference at the bottom of the exhaust chamber to prevent the float from sliding out of the exhaust chamber.

3. The irrigation faucet for farmland as described in claim 1, characterized in that, The exhaust chamber has an external thread on its exterior, and the exhaust cap has an internal thread that matches the external thread of the exhaust chamber. The exhaust cap is threadedly connected to the exhaust chamber.

4. The irrigation faucet for farmland as described in claim 1 or 3, characterized in that, The inner top of the vent cap is provided with an annular groove, and the top edge of the sealing ring is provided with an annular protrusion that matches the annular groove of the vent cap. The annular protrusion of the sealing ring is inserted into the annular groove. After the float rises, it fits tightly with the sealing ring to prevent water from flowing out from the vent hole.

5. The irrigation faucet for farmland as described in claim 4, characterized in that, The inner diameter of the sealing ring is the same as the diameter of the vent hole, both of which are smaller than the diameter of the float. After the float rises, its top fits tightly against the sealing ring.

6. The irrigation faucet for farmland as described in claim 1, characterized in that, The plug body and the outlet pipes on both sides are an integral structure. The outer surface of the outlet pipe is provided with external threads, and the end of the water supply pipe is provided with internal threads that match the external threads of the outlet pipe. The water supply pipe and the outlet pipe are threadedly connected.

7. The irrigation faucet for farmland as described in claim 1, characterized in that, The upper ends of the hydrant are reinforced with ribs on both sides to increase the overall strength of the hydrant.

8. The irrigation faucet for farmland as described in claim 3, characterized in that, To facilitate the rotation of the exhaust cap, raised ridges are provided on the outer wall of the exhaust cap.

Images