Flow controllable water saving valve

Abstract

The utility model relates to a kind of flow controllable water-saving valves, including electromagnetic valve, water pipe and shower nozzle, and is equipped with water measuring assembly on shower nozzle, comprising: support plate, is sleeved on shower nozzle;Multiple support rods are arranged on support plate;Bottom plate is arranged at the end of each support rod away from support plate, and the measuring space surrounded by each support rod is formed between support plate and bottom plate;Pressure sensor is arranged on support plate;Float is located inside measuring space;Processing unit is electrically connected with pressure sensor and electromagnetic valve respectively, for controlling the opening and closing of electromagnetic valve according to the pressure sensed by pressure sensor.By water measuring assembly real-time monitoring soil water infiltration state, combined with the dynamic flow control of processing unit to electromagnetic valve, avoid the over-irrigation waste problem caused by traditional unified time irrigation, when part of the area soil has been irrigated, can automatically reduce flow until closing, only for unirrigated area on-demand water supply, significantly improve water resource utilization rate.

Description

Technical Field

[0001] This utility model belongs to the field of garden irrigation technology, specifically relating to a water-saving valve with controllable flow rate. Background Technology

[0002] In the field of daily garden maintenance and irrigation, irrigation methods are mainly divided into two types: manual irrigation and automatic irrigation with fixed sprinklers. When using automatic irrigation with fixed sprinklers, people usually estimate an approximate irrigation time based on factors such as the season, weather, and temperature, and then control the irrigation operation of multiple fixed sprinklers in an area; or they control the irrigation by manually checking whether the soil is thoroughly watered.

[0003] However, this irrigation method has obvious drawbacks: since irrigation is usually carried out uniformly in one area, the actual irrigation situation at different nozzle locations varies when irrigating at the same time. Some areas may have been irrigated (the soil is thoroughly watered and no longer seeps downwards), while other areas have not been completed. This will result in a large amount of water being wasted in the areas that have been irrigated. Similarly, even if it is checked manually, irrigation will not be stopped until most areas have been irrigated (the soil is thoroughly watered and no longer seeps downwards), which will also cause water waste. Utility Model Content

[0004] The purpose of this invention is to provide a water-saving valve with controllable flow rate to solve the problems existing in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A flow-controllable water-saving valve includes a solenoid valve, a water pipe, and a nozzle. The nozzle is equipped with a water measurement component, including:

[0007] A support plate is fitted onto the nozzle;

[0008] Multiple support rods are disposed on the support plate, and each of the support rods is arranged around the edge of the support plate;

[0009] A base plate is disposed at the end of each of the support rods away from the support plate, so that the support plate is opposite to the base plate, and a measuring space surrounded by each of the support rods is formed between the support plate and the base plate;

[0010] A pressure sensor is mounted on the support plate, and the sensing head of the pressure sensor is located in the measurement space;

[0011] A float is located inside the measurement space and aligned with the pressure sensor;

[0012] The processing unit is electrically connected to the pressure sensor and the solenoid valve respectively, and is used to control the opening and closing of the solenoid valve according to the pressure sensed by the pressure sensor.

[0013] Optionally, the isolation assembly on the base plate includes:

[0014] An isolation net is disposed on the base plate and surrounds each of the support rods and the support plate.

[0015] Optionally, the double-layered isolation net is configured as a first isolation net and a second isolation net, wherein the inner diameter of the second isolation net is larger than the inner diameter of the first isolation net, so that a cleaning gap is formed between the first isolation net and the second isolation net;

[0016] The cleaning gap is provided with a cleaning ring that matches the shape of the cleaning gap, and the cleaning ring is provided with a pull rod that extends out of the cleaning gap.

[0017] Optionally, the end of the pull rod is provided with a rubber handle.

[0018] Optionally, each of the support rods is detachably connected to the base plate.

[0019] Optionally, the support plate is provided with a guide rod corresponding to the pressure sensor, and the end of the guide rod abuts against the base plate, and the float is slidably sleeved on the guide rod.

[0020] The beneficial effects of this utility model are:

[0021] This invention enables precise water saving by using a water-measuring component to monitor soil infiltration in real time and combining the processing unit with dynamic flow control of the solenoid valve. This avoids the problem of "over-watering waste" caused by traditional uniform irrigation. When some areas of soil have been thoroughly watered, the flow rate can be automatically reduced or even shut off, supplying water only to unwatered areas as needed, thus significantly improving water resource utilization.

[0022] Meanwhile, the structural design ensures reliable detection. The guide rod constrains the float's movement trajectory, ensuring the pressure sensor accurately detects water accumulation and reducing false triggers or signal loss. The isolation component prevents debris from entering the measurement space. Combined with the detachable support rod and cleaning structure, maintenance is convenient, ensuring long-term stable detection. Furthermore, the rubber handle improves cleaning comfort, and the detachable design of the support rod and base plate facilitates thorough cleaning of the measurement space, reducing equipment maintenance difficulty, extending service life, and making it well-suited for the complex outdoor environment of garden irrigation. Attached Figure Description

[0023] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0024] Figure 1This is a schematic diagram of the structure of a water-saving valve with controllable flow rate according to this utility model. Figure 1 ;

[0025] Figure 2 This is a partial cross-sectional view of a water-saving valve with controllable flow rate according to the present invention. Figure 2 ;

[0026] Figure 3 This is a partial structural diagram of a water-saving valve with controllable flow rate according to the present invention. Figure 1 ;

[0027] Figure 4 This is a partial structural diagram of a water-saving valve with controllable flow rate according to the present invention. Figure 2 ;

[0028] Figure 5 This is a flow control logic diagram of an irrigation control system for a water-saving valve with controllable flow rate according to this utility model.

[0029] Figure 6 This is a circuit connection diagram of a water-saving valve with controllable flow rate according to the present invention.

[0030] The symbols for the main components are explained below:

[0031] Solenoid valve 11, water pipe 12, nozzle 13, water measuring component 2, support plate 21, support rod 22, base plate 23, pressure sensor 24, float 25, guide rod 26, isolation component 3, isolation net 31, first isolation net 311, second isolation net 312, cleaning ring 32, pull rod 33, rubber handle 34. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] like Figure 1-6 As shown, a flow-controllable water-saving valve includes a solenoid valve 11, a water pipe 12, and a nozzle 13. The nozzle 13 is equipped with a water measuring component 2, including:

[0034] Support plate 21 is fitted onto nozzle 13;

[0035] Multiple support rods 22 are mounted on the support plate 21, and each support rod 22 is arranged around the edge of the support plate 21;

[0036] The base plate 23 is set at the end of each support rod 22 away from the support plate 21, so that the support plate 21 and the base plate 23 are opposite each other, and a measuring space surrounded by each support rod 22 is formed between the support plate 21 and the base plate 23.

[0037] Pressure sensor 24 is mounted on support plate 21, and the sensing head of pressure sensor 24 is located in the measurement space;

[0038] The float 25 is located inside the measurement space and is aligned with the pressure sensor 24;

[0039] The processing unit is electrically connected to the pressure sensor 24 and the solenoid valve 11 respectively, and is used to control the opening and closing of the solenoid valve 11 according to the pressure sensed by the pressure sensor 24.

[0040] The solenoid valve 11, water pipe 12, and sprinkler head 13 together form the basic irrigation path. The water pipe 12 is used to transport water, and the sprinkler head 13 disperses the water flow to irrigate the irrigation area. The solenoid valve 11, as the actuator for flow control, adjusts the amount of water flowing through the water pipe 12 by changing its opening degree, thereby controlling the water output of the sprinkler head 13.

[0041] Water measurement component 2 is embedded in the ground, with the measurement space buried in the soil surface layer. It achieves accurate detection by directly sensing the soil's water infiltration efficiency. The specific functions of the components are as follows:

[0042] The support plate 21 is ring-shaped and fitted onto the nozzle 13. After installation, it is flush with or slightly higher than the ground, serving as the upper fixing structure of the water measurement component. On one hand, it fixes the pressure sensor 24 (ensuring that the sensor 24 is flush with or slightly higher than the ground), and on the other hand, it supports the base plate 23 through the connecting support rod 22. Together with the base plate 23 and the support rod 22, they form a closed measurement space, which is embedded below the ground and in direct contact with the soil.

[0043] Support rods 22 are evenly distributed along the edge of support plate 21, with one end fixed to support plate 21 and the other end connected to base plate 23, forming a support frame. Its length is designed according to the depth of the measurement space to ensure that base plate 23 is below the ground (in direct contact with the soil), while the enclosure shape defines the range of the measurement space to avoid interference from external soil and debris with the internal detection environment.

[0044] The base plate 23 is located at the bottom of the support rod 22, completely below the ground and in contact with the soil surface, serving as the bottom boundary of the measurement space. It is in direct contact with the soil. When water flows into the measurement space, it needs to permeate through the base plate 23 into the surrounding soil. Therefore, the condition of the base plate 23 directly reflects the soil infiltration efficiency (whether it has been thoroughly watered).

[0045] The pressure sensor 24 is fixed to the side of the support plate 21 facing the measurement space, with the sensing head flush with or slightly above the ground, directly facing the float 25 below. Because of its installation position close to the ground, it can avoid being buried by soil and accurately sense the upward pressure of the float 25, making it the core component for transmitting water accumulation signals.

[0046] The float 25 is made of lightweight, corrosion-resistant material and is placed in the measurement space (below ground level), fitted onto the guide rod (if present) and aligned vertically with the pressure sensor 24. When water accumulates in the measurement space (soil seepage is slower than water inflow), the float 25 floats upward under buoyancy until it contacts the sensing head of the pressure sensor 24 and applies pressure; when the accumulated water has completely permeated through the base plate 23, the float 25 descends with the water level, and the pressure disappears.

[0047] like Figure 2 As shown, the positions of the float 25 and the pressure sensor 24 are offset from the water outlet position of the nozzle 13. This way, during testing, we can avoid the situation where the nozzle 13 impacts the float 25 while it is discharging water, causing the float 25, which should be floating on the water surface, to be below the water surface, resulting in incorrect test results.

[0048] The processing unit is connected to the pressure sensor 24 and the solenoid valve 11 via circuits, serving as the control core. After receiving the pressure signal from the pressure sensor 24, it determines whether there is water accumulation in the measurement space (i.e., whether the soil has been thoroughly watered), and sends a command to the solenoid valve 11 according to preset logic to adjust the flow rate, thereby achieving a water-saving effect of "maintaining the flow rate when the soil is not thoroughly watered and reducing the flow rate when it is watered".

[0049] During installation, the water measurement component 2 is embedded entirely in the ground, with the support plate 21 flush with or slightly higher than the ground, and the base plate 23 buried below the ground and in contact with the soil. The measurement space is located within the soil surface layer. During irrigation:

[0050] After the water is sprayed out from the nozzle 13, part of it flows into the measuring space and seeps into the surrounding soil through the base plate 23;

[0051] If the soil is not thoroughly watered (the water seepage rate is fast), there is no water accumulation in the measuring space, the float 25 falls, the pressure sensor 24 has no signal, and the processing unit controls the solenoid valve 11 to maintain the current flow rate.

[0052] If the soil has been thoroughly watered (with slow water seepage), the float 25 rises and presses against the pressure sensor 24 when the water accumulates in the measuring space. The sensor transmits a signal to the processing unit, which then controls the solenoid valve 11 to reduce the flow rate until it is closed, thus avoiding waste caused by continuing to water after the soil has been thoroughly watered.

[0053] Furthermore, the isolation assembly 3 on the base plate 23 includes:

[0054] An isolation net 31 is installed on the base plate 23 and surrounds each support rod 22 and support plate 21.

[0055] The isolation component 3 is set on the base plate 23 and forms a protective structure around the support rod 22 and the support plate 21. Its main function is to block external debris (such as soil particles, fallen leaves, weeds, pebbles, etc.) from entering the measurement space, avoid debris from interfering with the floating of the float 25 or blocking the seepage path of the base plate 23, and ensure that the water flow state in the measurement space is only affected by the soil seepage efficiency, thereby improving the reliability of the detection signal of the pressure sensor 24.

[0056] The isolation net 31, as the main structure of the isolation component 3, is fixedly installed on the base plate 23. It surrounds each support rod 22 and support plate 21 in a cylindrical or ring shape, physically separating the measurement space from the external environment. Its mesh size is designed to allow water to flow smoothly (without obstructing the water sprayed from the nozzle 13 from entering the measurement space) while effectively intercepting debris larger than the mesh size, preventing it from entering the measurement space.

[0057] In practical applications, the height of the isolation net 31 can cover the area from the base plate 23 to the support plate 21, forming a fully enclosed protection. When there are fallen leaves, loose soil, or debris brought by human activities in the irrigation area, the isolation net 31 can prevent these debris from contacting the support rod 22, the float 25, or the base plate 23, avoiding problems such as the float 25 getting stuck (unable to float with the water) and the base plate 23 not having good water seepage (misjudging that the soil has been thoroughly watered) due to the accumulation of debris, thus ensuring the stable operation of the detection logic of the water measuring component 2.

[0058] Furthermore, the isolation net 31 is configured with a first isolation net 311 and a second isolation net 312 in two layers. The inner diameter of the second isolation net 312 is larger than the inner diameter of the first isolation net 311, so that a cleaning gap is formed between the first isolation net 311 and the second isolation net 312.

[0059] A cleaning ring 32 matching the shape of the cleaning gap is installed inside the cleaning gap, and a pull rod 33 extending out of the cleaning gap is provided on the cleaning ring 32.

[0060] The first isolation net 311 and the second isolation net 312 are both cylindrical or annular structures, coaxially mounted on the base plate 23, together surrounding the support rod 22 and the support plate 21. The inner diameter of the second isolation net 312 is larger than that of the first isolation net 311, creating an annular "cleaning gap" between the two layers. The core function of this double-layer design is:

[0061] Double isolation protection: The first isolation net 311 is close to the measurement space and can intercept smaller debris (such as fine soil particles and grass clippings) to prevent them from entering the measurement space; the second isolation net 312 is located on the outside and intercepts larger debris (such as fallen leaves and small branches) to prevent them from accumulating directly on the surface of the first isolation net 311 and reduce the probability of blockage of the single-layer net.

[0062] Reserved cleaning space: The cleaning gap between the two layers of mesh provides a temporary accumulation area for debris, and the size of the gap is designed to ensure that debris will not adhere tightly due to compression, making it easy to clean later.

[0063] The cleaning ring 32 adopts a ring-shaped structure that matches the shape of the cleaning gap and is embedded in the gap between the two layers of isolation netting. Its material can be hard plastic or metal, possessing a certain rigidity to conform to the outer wall of the first isolation netting 311 and the inner wall of the second isolation netting 312. When debris accumulates in the gap, the cleaning ring 32 can slide up and down within the gap, physically scraping away and lifting the debris (such as tangled weeds or piled-up soil) for easy collection and removal.

[0064] One end of the pull rod 33 is fixedly connected to the cleaning ring 32, and the other end extends out into the cleaning gap (which can extend above or to the outside of the support plate 21) to serve as a force-bearing component for manual operation. By pulling the pull rod 33, the user can move the cleaning ring 32 up and down within the cleaning gap, completing the cleaning of debris without disassembling the isolation net, thus simplifying the maintenance process.

[0065] Furthermore, a rubber handle 34 is provided at the end of the lever 33.

[0066] The rubber handle 34 is made of elastic rubber and is fixedly installed at the end of the lever 33 (located outside the cleaning gap for easy hand grip). The rubber material has good anti-slip properties. When the user pulls the lever 33 to clean debris in the gap of the isolation net, even if the hands are wet (common in irrigation environments), the friction of the rubber surface can provide a stable grip, preventing slippage and ensuring that the cleaning ring 32 can be effectively pulled to complete the debris cleaning action.

[0067] Meanwhile, the rubber material has a certain degree of softness and elasticity, which can reduce the pressure on the hand when holding it compared to metal or hard plastic handles. Especially when the lever 33 needs to be pulled repeatedly for multiple cleaning operations, it can reduce hand fatigue and improve the comfort of maintenance operations.

[0068] Furthermore, each support rod 22 is detachably connected to the base plate 23.

[0069] The detachable connection structure allows the user to separate the base plate 23 from the support rod 22 when needed. During long-term use, scale, silt, or small debris may accumulate inside the measurement space due to factors such as water quality and soil environment. If these debris accumulates around the float 25 or on the surface of the base plate 23, it may cause the float 25 to become stuck (unable to float normally with the accumulated water) or the base plate 23 to have poor water seepage, affecting the detection accuracy of the pressure sensor 24. By removing the base plate 23, the user can directly access the inside of the measurement space to thoroughly clean the float 25, the sensing head of the pressure sensor 24, and the surface of the base plate 23, avoiding equipment malfunctions caused by debris residue.

[0070] In addition, when the base plate 23, support rod 22 or other components in the measuring space are worn or damaged, the detachable connection makes it easy to replace the damaged parts individually without having to replace the entire water measuring assembly 2, thus reducing maintenance costs.

[0071] Furthermore, the support plate 21 is provided with a guide rod 26 corresponding to the pressure sensor 24, and the end of the guide rod 26 abuts against the base plate 23, and the float 25 is slidably sleeved on the guide rod 26.

[0072] One end is fixed to the support plate 21, corresponding to the position of the pressure sensor 24, and the other end extends downward and abuts against the base plate 23, forming a rigid rod-like structure perpendicular to the support plate 21 and the base plate 23. Its length is adapted to the support rod 22 to ensure a stable guide path between the support plate 21 and the base plate 23.

[0073] After the float 25 is slidably mounted on the guide rod 26, the guide rod 26 constrains the movement direction of the float 25. When water accumulates in the measurement space, the float 25 can only slide upward along the axis of the guide rod 26, precisely aligning with the sensing head of the pressure sensor 24 and applying pressure; when the water recedes, the float 25 falls downward along the axis of the guide rod 26, avoiding displacement of the float 25 due to water flow impact, slight collisions with debris, etc., ensuring that the float 25 always maintains a vertical correspondence with the pressure sensor 24.

[0074] Overall, the irrigation control process logic of this utility model is as follows:

[0075] When irrigation begins, the solenoid valve 11 is opened at 100% flow rate, and water is delivered to the nozzle 13 through the water pipe 12. The water sprayed from the nozzle 13 flows into the measuring space formed by the support plate 21, the support rod 22, and the base plate 23 and embedded in the ground, and then seeps into the surrounding soil for basic flood irrigation.

[0076] The basic flooding time is set to 10 minutes, during which solenoid valve 11 remains fully open. After 10 minutes, the detection and adjustment phase begins.

[0077] If water accumulates in the measuring space (the inflow of water is greater than the amount of soil intrusion), the float 25 floats up along the guide rod 26 and comes into contact with the pressure sensor 24. The pressure sensor 24 transmits the pressure signal to the processing unit, and the processing unit controls the solenoid valve 11 to adjust the flow rate to 75% and maintain this flow rate for 1 minute to wait for water to seep in.

[0078] If there is no water accumulation in the measurement space (the water inflow is less than or equal to the soil intrusion), the float 25 does not contact the pressure sensor 24, and the processing unit controls the solenoid valve 11 to maintain 100% flow.

[0079] The test was repeated every minute thereafter.

[0080] If the pressure sensor 24 continues to detect water (water is still accumulating), the processing unit controls the solenoid valve 11 to sequentially reduce the flow rate to 50%, 25%, and 0% (completely closed), and each flow rate level is maintained for 1 minute.

[0081] If the pressure sensor 24 does not register a reading (water has already seeped in), the processing unit controls the solenoid valve 11 to maintain the current flow rate.

[0082] The entire irrigation operation is completed when the flow rate of solenoid valve 11 drops to 0%. By dynamically detecting the soil seepage status and adjusting the flow rate, water can be controlled on demand, reducing water waste.

[0083] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0084] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0085] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A water-saving valve with controllable flow rate, comprising a solenoid valve, a water pipe, and a nozzle, characterized in that, The nozzle is equipped with a water measurement component, including: A support plate is fitted onto the nozzle. Multiple support rods are disposed on the support plate, and each of the support rods is arranged around the edge of the support plate; A base plate is disposed at the end of each of the support rods away from the support plate, so that the support plate is opposite to the base plate, and a measuring space surrounded by each of the support rods is formed between the support plate and the base plate; A pressure sensor is mounted on the support plate, and the sensing head of the pressure sensor is located in the measurement space; A float is located inside the measurement space and aligned with the pressure sensor; The processing unit is electrically connected to the pressure sensor and the solenoid valve respectively, and is used to control the opening and closing of the solenoid valve according to the pressure sensed by the pressure sensor.

2. The water-saving valve with controllable flow rate according to claim 1, characterized in that: The isolation assembly on the base plate includes: An isolation net is disposed on the base plate and surrounds each of the support rods and the support plate.

3. A water-saving valve with controllable flow rate according to claim 2, characterized in that: The isolation net is configured as a first isolation net and a second isolation net, with the inner diameter of the second isolation net being larger than that of the first isolation net, so that a cleaning gap is formed between the first isolation net and the second isolation net; The cleaning gap is provided with a cleaning ring that matches the shape of the cleaning gap, and the cleaning ring is provided with a pull rod that extends out of the cleaning gap.

4. A water-saving valve with controllable flow rate according to claim 3, characterized in that: The pull rod is equipped with a rubber handle at its end.

5. A water-saving valve with controllable flow rate according to claim 1, characterized in that: Each of the support rods is detachably connected to the base plate.

6. A water-saving valve with controllable flow rate according to claim 1, characterized in that: The support plate is provided with a guide rod corresponding to the pressure sensor, and the end of the guide rod abuts against the base plate. The float is slidably sleeved on the guide rod.

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