Water resource saving valve for water conservancy dropper

Abstract

The invention provides a water resource water-saving valve for a water conservancy dropper, and belongs to the technical field of water-saving valves. Comprising a drip irrigation pipe which is provided with a plurality of drip irrigation holes, and further comprises a valve group. Through the arrangement of the valve shell, the regulation and control assembly and the gravity type valve plate, during drip irrigation, the gravity type valve plate is opened, water in the drip irrigation pipe sequentially passes through the connecting pipe and the valve shell, then enters the permeation mechanism and permeates into soil through the permeation mechanism, and as the content of water in the soil at the permeation mechanism is gradually increased, the amount of water discharged from the permeation mechanism is gradually reduced; then the liquid level in the valve shell gradually rises, the regulating and controlling assembly drives the gravity type valve plate to be closed under the buoyancy action of water in the valve shell, after closing, water flowing out of the drip irrigation pipe does not enter the valve shell any more, the irrigation amount can be automatically adjusted according to the soil water content through the design, different water requirements for growth of multiple plants are met, and the water resource utilization rate is increased; and water resources are saved.

Description

Technical Field

[0001] The invention relates to the technical field of water-saving valves, and in particular to a water-saving valve for water resources used in water conservancy drip pipes. Background Art

[0002] In the field of agricultural irrigation and water-saving valve technology, the drip irrigation system has become a key facility for improving the efficiency of water resource utilization through the coordinated operation of the pumps, filters and water distribution networks at the head hub. When the traditional drip irrigation system is in operation, water flows through the main pipeline and is distributed to the drip irrigation pipes of each branch, and finally the crops are irrigated at a fixed point through the evenly arranged drip irrigation holes. However, this homogenized water supply mode is fundamentally inconsistent with the dynamic water demand characteristics of the plant during growth.

[0003] Plants in the same drip irrigation pipe coverage area often show significant differentiation in water demand due to differences in varieties, canopy development stages or changes in soil microenvironment. For example, the daily water demand of a single fruit tree in the fruit expansion period can be several times that of the vegetative growth period, and the actual water absorption rate of adjacent plants may deviate greatly due to differences in root distribution or light interception. Existing drip irrigation pipes use a fixed aperture and equal spacing design, forcing all plants to passively receive the same amount of irrigation, causing high-water-demand plants to be in a state of water stress for a long time, while low-water-demand areas cause deep leakage due to excessive irrigation, resulting in a waste of water and fertilizer resources. This contradiction is particularly prominent in facility agriculture. Relevant studies have shown that the proportion of crop yield reductions due to insufficient irrigation uniformity has increased.

[0004] Although existing technologies have attempted to improve, such as using pressure-compensating drippers to optimize flow stability at the end of the pipeline, or adjusting the water supply sequence of the branch through zoned rotation valves, these solutions are still limited to extensive control at the pipeline network level and cannot achieve precise water distribution at the individual plant scale; in addition, existing pressure-compensating drippers adjust the flow through elastic diaphragms or spring structures. Although this can alleviate the impact of pipeline pressure fluctuations, its adjustment range is limited to the preset pressure threshold and cannot dynamically adapt to the differences in individual plant water requirements.

[0005] Therefore, the present application provides a water-saving valve for water conservancy drippers to optimize the coupling relationship between the valve core assembly and the pressure feedback mechanism, realize independent regulation of the flow rate of a single drip hole while ensuring the hydraulic balance of the pipeline network, and break through the static mode problem of "preset threshold adjustment" of traditional drippers. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A water-saving valve for water resources of a water conservancy drip irrigation pipe, comprising a drip irrigation pipe, a plurality of drip irrigation holes are provided on the drip irrigation pipe, and further comprising: The valve group includes a plurality of valve shells attached to the ground, a water inlet hole is opened on the side of the valve shell, a connecting pipe is connected between the drip irrigation pipe and the valve shell, the connecting pipe is used to connect the drip irrigation pipe and the valve shell, a gravity valve plate is rotatably connected inside the valve shell, a regulating component is arranged inside the valve shell, the regulating component is used to control the opening and closing of the gravity valve plate, and a penetration mechanism is arranged on the side of the valve shell away from the drip irrigation pipe, and the penetration mechanism is inserted into the soil.

[0007] Preferably, the regulating component includes two floating plates slidably connected to the inside of the valve housing, a counterweight rod is fixed between the two floating plates, a connecting rope is fixed to the top of the counterweight rod, a support rod is fixed to the top of the inner wall of the valve housing, and the end of the connecting rope away from the counterweight rod passes through the support rod and is rotatably connected to the gravity valve plate. When working, the gravity valve plate is opened, and the water in the drip irrigation pipe passes through the connecting pipe and the valve housing in turn and enters the infiltration mechanism, and infiltrates into the soil through the infiltration mechanism. As the moisture content in the soil at the infiltration mechanism gradually increases, the amount of water discharged from the infiltration mechanism gradually decreases, and the liquid level inside the valve housing gradually rises, and the floating plate of the regulating component drives the gravity valve plate to close under the action of buoyancy.

[0008] Preferably, guide rods are fixed on opposite sides of the inner wall of the valve housing, and the side surfaces of the floating plate are slidably connected to the side surfaces of the guide rods.

[0009] Preferably, the infiltration mechanism includes a group of hollow rods fixed to the side of the valve housing, the hollow rods are inclined, and each group of hollow rods has two rods. The plant is located between the two hollow rods, the hollow rods are connected to the valve housing, the outer wall of the hollow rods is provided with a water outlet, the water outlet faces the plant, and a infiltration head is provided on the outer wall of the hollow rod corresponding to the water outlet position, and the end of the hollow rod away from the valve housing is in a pointed cone shape.

[0010] Preferably, the penetration head includes a round seat fixed on the outer wall of the hollow plug rod corresponding to the water outlet position, a protective shell is clamped on the round seat, a non-woven fabric is fixed to the inner wall of the protective shell, the central axis of the non-woven fabric coincides with the central axis of the water outlet hole, the diameters of several non-woven fabrics on the same hollow plug rod decrease from top to bottom, a water outlet cavity is opened inside the protective shell, several water outlet holes are opened at the bottom of the inner wall of the water outlet cavity, an inclined groove is opened on the side of the protective shell, the inclined groove is located obliquely below the water outlet, and the inclined groove is connected with the water outlet cavity through the water outlet hole.

[0011] Preferably, an outer cover is fixed to the outer wall of the hollow insertion rod corresponding to the protective shell, and the outer wall of the protective shell is in contact with the inner wall of the outer cover.

[0012] Preferably, shift blocks are fixed on opposite sides of the protective shell, positioning grooves are provided on opposite sides of the outer cover, the shift blocks fit inside the positioning grooves, and anti-slip grooves are provided on one side of the shift blocks away from the protective shell.

[0013] Preferably, a V-shaped portion is provided on a side of the outer cover close to the valve housing, the tip of the V-shaped portion faces the valve housing, and a slope is provided on a side of the outer cover away from the valve housing.

[0014] Preferably, an L-shaped convex strip is fixed to a side of the outer cover away from the hollow insertion rod, and the L-shaped convex strip includes a shielding portion and an extending portion connected in sequence, the shielding portion is located above the inclined groove, and the extending portion is located obliquely below the inclined groove.

[0015] Preferably, an inclined extension surface is provided on the side surface of the extension portion corresponding to a side of the inner wall of the inclined groove away from the water outlet, and the inclination angle of the extension surface is the same as the inclination angle of the inclined groove.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, through the arrangement of the valve housing, the regulating component and the gravity valve plate, during drip irrigation, the gravity valve plate is opened, and the water in the drip irrigation pipe enters the infiltration mechanism after passing through the connecting pipe and the valve housing in turn, and infiltrates into the soil through the infiltration mechanism. As the moisture content inside the soil at the infiltration mechanism gradually increases, the amount of water discharged from the infiltration mechanism gradually decreases, and then the liquid level inside the valve housing gradually rises. The regulating component drives the gravity valve plate to close under the buoyancy of the water inside the valve housing. After closing, the water flowing out of the drip irrigation pipe no longer enters the valve housing. This design can automatically adjust the irrigation amount according to the soil moisture content, meet the different moisture requirements of the growth of multiple plants, improve the utilization rate of water resources, and save water resources.

[0017] Through the setting of the hollow plug rod, two hollow plug rods on the same group are inserted into the soil and located on both sides of the plant. Water enters the hollow plug rod from the valve housing and is discharged from the penetration head position to irrigate the root position of the plant. The water is directly applied to the root position of the plant, which greatly reduces the evaporation of water during drip irrigation operations on the ground in high temperature weather, further improves the utilization rate of water resources, and further saves water resources.

[0018] By setting the infiltration head and the inclined slot, the infiltration head is covered at the water outlet of the hollow plug rod, and the inclined slot is located obliquely below the water outlet. After the water flows from the water outlet to the inside of the infiltration head, it is discharged from the inclined slot to achieve water replenishment irrigation of the soil at the root position of the plant. The design of the inclined slot being located obliquely below the water outlet prevents soil from entering the hollow plug rod during use, thereby ensuring smooth water replenishment irrigation of the plant root system. At the same time, considering that the soil moisture content changes with increasing depth, and the difference in water demand of the plant root system at different depths, when the hollow plug rod is inserted into the soil As the depth increases, due to the high water content in the deep soil, the amount of water required by the plant roots at deeper positions gradually decreases. To meet this characteristic, on the same hollow plug, the infiltration heads arranged from top to bottom need to achieve a decreasing drainage volume in sequence. By adopting a design in which the diameter of the non-woven fabric arranged from top to bottom on the same hollow plug gradually decreases, the goal of gradually reducing the drainage volume of the infiltration heads from top to bottom is effectively achieved, accurately meeting the actual needs of the plant roots for the gradual decrease in water demand due to the increase in depth, improving the scientificity and efficiency of the drip irrigation operation, and saving water resources again.

[0019] By setting the outer cover, the outer cover is wrapped around the outside of the protective shell, which can prevent the protective shell from loosening on the round seat during the insertion and extraction of the hollow plug rod in the soil, thereby ensuring a stable connection between the protective shell and the round seat and preventing water leakage at the connection position between the protective shell and the round seat. In addition, by designing the inclined surface on the outer cover, the resistance at the outer cover when the hollow plug rod is inserted into the soil is reduced. At the same time, by designing the V-shaped part on the outer cover, the resistance at the outer cover when the hollow plug rod is pulled out of the soil is reduced, thereby improving the convenience of inserting and extracting the hollow plug rod in the soil and making the insertion and extraction of the hollow plug rod in the soil more labor-saving.

[0020] By setting the shielding part, the water flowing out from the chute position penetrates the soil around it, and the water diffuses in the soil around the chute. During the diffusion process, the moisture content of the soil around the chute gradually increases, and the water in the soil above the chute will flow downward along the outer cover under the action of its own gravity and mix with the soil to form muddy water. The muddy water is guided to the oblique lower part of the outer cover by the shielding part on the L-shaped convex strip, and the muddy water will not flow directly along the outer cover to the chute position, thereby greatly reducing the possibility of blockage at the chute position, ensuring the stable outflow of water from the chute, thereby ensuring the stable irrigation of the plants.

[0021] Through the setting of the extension part, the extension part extends out from the chute position. When the hollow insertion rod is inserted into the soil, the soil is blocked by the extension part, which can effectively prevent the soil from entering the inside of the chute, further reducing the possibility of blockage at the chute, and further ensuring the stable irrigation of the plants. At the same time, the extension part is provided with an extension surface, and the extension surface is inclined. When muddy water contacts the extension part, it will also flow downward under the action of the inclined extension surface, further preventing muddy water from accumulating at the chute, and greatly reducing the possibility of blockage at the chute. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the valve housing of the present invention; Figure 3 It is a schematic diagram of the internal three-dimensional structure of the valve housing of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the penetration head of the present invention; Figure 5 It is a cross-sectional view of the connecting rope of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the floating plate of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the hollow plug rod of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the round seat of the present invention; Fig. 9 It is a cross-sectional view of the protective shell of the present invention; Fig.10 It is an exploded view of the protective shell of the present invention.

[0023] In the figure: 1. drip irrigation pipe; 2. connecting pipe; 3. valve group; 4. valve shell; 5. gravity valve plate; 6. regulating assembly; 7. floating plate; 8. counterweight rod; 9. connecting rope; 10. support rod; 11. guide rod; 12. penetration mechanism; 13. hollow plug rod; 14. water outlet; 15. penetration head; 16. round seat; 17. protective shell; 18. water outlet cavity; 19. non-woven fabric; 20. water outlet hole; 21. inclined groove; 22. dial block; 23. outer cover; 24. V-shaped part; 25. positioning groove; 26. inclined surface; 27. L-shaped convex strip; 28. shielding part; 29. ​​extension part; 30. extension surface.

[0024] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0025] The following is a detailed description of a water-saving valve for water resources of a water conservancy drip pipe provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0026] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0027] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0028] like Figure 1-Figure 10 As shown, an embodiment of the present invention provides a water-saving valve for water resources using a water conservancy drip irrigation pipe, comprising a drip irrigation pipe 1, on which a plurality of drip irrigation holes are provided, and further comprising: The valve group 3 includes a plurality of valve shells 4 attached to the ground, a water inlet hole is opened on the side of the valve shell 4, a connecting pipe 2 is connected between the drip irrigation pipe 1 and the valve shell 4, and the connecting pipe 2 is used for connecting the drip irrigation pipe 1 with the valve shell 4. A gravity valve plate 5 is rotatably connected inside the valve shell 4, and a regulating component 6 is arranged inside the valve shell 4. The regulating component 6 is used to control the opening and closing of the gravity valve plate 5. A penetration mechanism 12 is arranged on the side of the valve shell 4 away from the drip irrigation pipe 1, and the penetration mechanism 12 is inserted into the soil. After the gravity valve plate 5 is opened, the water flowing out of the drip irrigation hole on the drip irrigation pipe 1 passes through the connecting pipe 2 enters the valve housing 4, and then the water in the valve housing 4 enters the penetration mechanism 12, and the water can gradually penetrate into the soil from the penetration mechanism 12 to achieve water replenishment for the root position of the plant. As the moisture content in the soil at the penetration mechanism 12 gradually increases, the amount of water discharged from the penetration mechanism 12 gradually decreases, the liquid level in the valve housing 4 gradually rises, and the regulating component 6 drives the gravity valve plate 5 to close under the action of buoyancy. Through the above design, the irrigation amount can be automatically adjusted according to the soil moisture content to meet the different moisture needs of multiple plants, improve the utilization rate of water resources, and save water resources.

[0029] like Figure 3 , Figure 5 and Figure 6 As shown, in this embodiment, the regulating component 6 includes two floating plates 7 slidably connected to the inside of the valve housing 4, a counterweight rod 8 is fixed between the two floating plates 7, a connecting rope 9 is fixed to the top of the counterweight rod 8, a support rod 10 is fixed to the top of the inner wall of the valve housing 4, and the end of the connecting rope 9 away from the counterweight rod 8 passes through the support rod 10 and is rotatably connected to the gravity valve plate 5. When working, the gravity valve plate 5 is opened, and the water in the drip irrigation pipe 1 passes through the connecting pipe 2 and the valve housing 4 in turn and enters the inside of the penetration mechanism 12, and penetrates into the soil through the penetration mechanism 12. As the moisture content in the soil at the penetration mechanism 12 gradually increases, the amount of water discharged from the penetration mechanism 12 gradually decreases, and the liquid level in the valve housing 4 gradually rises, and the regulating component 6 The floating plate 7 drives the gravity valve plate 5 to close under the action of buoyancy. When the liquid level in the valve housing 4 rises, the floating plate 7 of the regulating assembly 6 rises under the action of the buoyancy of the water. Since the floating plate 7 is connected to the counterweight rod 8, and the counterweight rod 8 is connected to the gravity valve plate 5 through the connecting rope 9, when the floating plate 7 rises, the counterweight rod 8 no longer pulls the connecting rope 9, so that the connecting rope 9 no longer pulls the gravity valve plate 5. Then the gravity valve plate 5 can rotate downward under the action of its own weight to realize the closure of the water inlet hole on the side of the valve housing 4. After closing, the water flowing out of the drip irrigation pipe 1 will no longer enter the valve housing 4, thereby realizing automatic adjustment of the irrigation amount according to the soil moisture content, meeting the water demand of the growth of different plants, and improving the utilization rate of water resources.

[0030] like Figure 5 and Figure 6As shown, in this embodiment, guide rods 11 are fixed on opposite sides of the inner wall of the valve housing 4, and the side surfaces of the floating plate 7 are slidably connected to the side surfaces of the guide rods 11. The guide rods 11 are used to guide the floating plate 7 during its up and down movement to prevent the floating plate 7 from tilting during its up and down movement, thereby ensuring the stability of the floating plate 7 during its up and down movement.

[0031] like Figure 2 and Figure 3 As shown, in this embodiment, the penetration mechanism 12 includes a group of hollow plug rods 13 fixed to the side of the valve housing 4, the hollow plug rods 13 are inclined, and the number of each group of hollow plug rods 13 is two, the plant is located between the two hollow plug rods 13, the hollow plug rod 13 is connected to the valve housing 4, the outer wall of the hollow plug rod 13 is provided with a water outlet 14, the water outlet 14 faces the plant, the outer wall of the hollow plug rod 13 is provided with a penetration head 15 corresponding to the position of the water outlet 14, and the end of the hollow plug rod 13 away from the valve housing 4 is a pointed cone The two hollow rods 13 on the same group are inserted into the soil and located on both sides of the plant. Water enters the hollow rod 13 from the valve housing 4 and is discharged from the penetration head 15 to irrigate the root system of the plant. The water is directly applied to the root system of the plant, which greatly reduces the evaporation of water during drip irrigation on the ground in hot weather, further improves the utilization rate of water resources, and further saves water resources. The end of the hollow rod 13 is in a pointed cone shape, which makes it easier and more convenient to insert the hollow rod 13 into the soil.

[0032] like Figure 4 , Figure 8 and Fig. 9As shown, in this embodiment, the infiltration head 15 includes a round seat 16 fixed on the outer wall of the hollow plug rod 13 corresponding to the position of the water outlet 14, a protective shell 17 is clamped on the round seat 16, a non-woven fabric 19 is fixed on the inner wall of the protective shell 17, the central axis of the non-woven fabric 19 coincides with the central axis of the water outlet hole 20, and the diameters of several non-woven fabrics 19 on the same hollow plug rod 13 decrease from top to bottom, a water outlet cavity 18 is provided inside the protective shell 17, and several water outlet holes 20 are provided at the bottom of the inner wall of the water outlet cavity 18, and an inclined groove 21 is provided on the side of the protective shell 17, and the inclined groove 21 is located obliquely below the water outlet 14, and the inclined groove 21 is connected with the water outlet cavity 18 through the water outlet hole 20, and water enters the infiltration head from the water outlet 14 of the hollow plug rod 13. After the head 15, the water flows through the non-woven fabric 19 into the water outlet cavity 18, and then enters the inclined groove 21 from the water outlet 14 at the bottom of the water outlet cavity 18, and then the water flows out from the inclined groove 21 to realize the water replenishment irrigation of the soil at the root position of the plant, and the inclined groove 21 is located obliquely below the water outlet 14, which can prevent the soil from entering the hollow plug rod 13. The design of the gradually decreasing diameter of the non-woven fabric 19 arranged from top to bottom on the same hollow plug rod 13 makes the drainage of the penetration head 15 decrease from top to bottom, effectively achieving the goal of gradually reducing the drainage of the penetration head 15 from top to bottom, accurately meeting the actual needs of the plant root system due to the gradual decrease in water demand caused by the increase in depth, and improving the scientificity and efficiency of the drip irrigation operation.

[0033] like Figure 8 and Fig. 9 As shown, in the present embodiment, an outer cover 23 is fixed to the outer wall of the hollow plug rod 13 corresponding to the protective shell 17, the outer wall of the protective shell 17 is in contact with the inner wall of the outer cover 23, and the outer cover 23 is wrapped around the outside of the protective shell 17. When the hollow plug rod 13 is inserted or pulled out of the soil, the outer cover 23 is in direct contact with the soil, effectively preventing the soil from contacting the protective shell 17, thereby preventing the protective shell 17 from loosening on the round seat 16 due to the insertion or pulling out of the hollow plug rod 13, thereby ensuring that the protective shell 17 is stably connected to the round seat 16 and preventing water leakage at the connection.

[0034] like Figure 4 , Figure 8 and Fig.10 As shown, in the present embodiment, shift blocks 22 are fixed on opposite sides of the protective shell 17, positioning grooves 25 are provided on opposite sides of the outer cover 23, the shift blocks 22 are fitted inside the positioning grooves 25, and anti-slip grooves are provided on the side of the shift block 22 away from the protective shell 17. When the shift block 22 is pinched, it is convenient to plug and unplug the protective shell 17, thereby facilitating the disassembly and assembly of the protective shell 17. At the same time, the design of the anti-slip grooves prevents slipping when pinching the shift block 22, making the disassembly and assembly of the protective shell 17 more stable and reliable.

[0035] like Fig.10As shown, in this embodiment, a V-shaped portion 24 is provided on one side of the outer cover 23 close to the valve housing 4, and the tip of the V-shaped portion 24 faces the valve housing 4. A slope 26 is provided on the side of the outer cover 23 away from the valve housing 4. The slope 26 on the outer cover 23 can reduce the resistance of the hollow plug rod 13 when the hollow plug rod 13 is inserted into the soil. When the V-shaped portion 24 is pulled out, the resistance of the hollow plug rod 13 when pulled out is reduced under the guidance of its own shape, so that the insertion and removal of the hollow plug rod 13 is more labor-saving and convenient.

[0036] like Figure 8 and Fig.10 As shown, in this embodiment, an L-shaped convex strip 27 is fixed on one side of the outer cover 23 away from the hollow insertion rod 13. The L-shaped convex strip 27 includes a shielding portion 28 and an extension portion 29 connected in sequence. The shielding portion 28 is located above the inclined groove 21, and the extension portion 29 is located obliquely below the inclined groove 21. The water flowing out of the inclined groove 21 increases the moisture content of the surrounding soil. The water in the soil above the inclined groove 21 flows down along the outer cover 23 under the action of gravity and mixes with the soil to form muddy water. When the muddy water flows downward along the outer cover 23, it passes through the L-shaped convex strip 27. The shielding portion 28 on the L-shaped convex strip 27 guides the muddy water to the oblique lower part of the outer cover 23 to prevent the muddy water from flowing directly to the inclined groove 21 and preventing the inclined groove 21 from being blocked. At the same time, the extension portion 29 on the L-shaped convex strip 27 extends from the inclined groove 21. When the hollow insertion rod 13 is inserted into the soil, the blocking of the extension portion 29 can effectively prevent the soil from entering the inclined groove 21.

[0037] like Figure 4 As shown, in the present embodiment, an inclined extension surface 30 is provided on the side of the extension portion 29 corresponding to the inner wall of the chute 21 away from the water outlet 20, and the inclination angle of the extension surface 30 is the same as the inclination angle of the chute 21. When muddy water flows onto the extension portion 29, the inclined extension surface 30 on the extension portion 29 can also guide the muddy water to flow downward, preventing the muddy water from accumulating in the chute 21, greatly reducing the risk of blockage of the chute 21, and ensuring stable irrigation of the plants.

[0038] Working principle: first insert the hollow plug rod 13 into the soil. When the drip irrigation operation starts, the gravity valve plate 5 is affected by the weight of the counterweight rod 8. The counterweight rod 8 pulls the connecting rope 9 under its own weight, so that the connecting rope 9 pulls the gravity valve plate 5, so that the gravity valve plate 5 is in an open state. The water in the drip irrigation pipe 1 is discharged from the drip irrigation hole and enters the valve housing 4 through the connecting pipe 2. Since the side of the valve housing 4 is connected to the penetration mechanism 12, the water flows from the valve housing 4 into the hollow plug rod 13 of the penetration mechanism 12. The hollow plug rods 13 in the penetration mechanism 12 are inserted into the soil in an inclined shape, and there are two in each group, and the plant is located between the two. The water passes through the water outlet 14 of the hollow plug rod 13 and enters the inside of the penetration head 15; After water enters the penetration head 15 from the water outlet 14 of the hollow plug rod 13, the water flows through the non-woven fabric 19 into the water outlet cavity 18, and then enters the chute 21 from the water outlet 14 at the bottom of the water outlet cavity 18, and then the water flows out from the chute 21 to achieve water replenishment irrigation for the soil at the root position of the plant, and the chute 21 is located obliquely below the water outlet 14, which can prevent the soil from entering the hollow plug rod 13. As the penetration head 15 continuously infiltrates water into the soil, the moisture content of the soil gradually increases, the water absorption of the soil gradually decreases, and the amount of water discharged by the penetration mechanism 12 gradually decreases, and then the water will accumulate in the hollow plug rod 13 and the valve housing 4. At this time, the liquid level in the valve housing 4 begins to rise, and the floating plate 7 of the regulating component 6 rises under the buoyancy of the water. Since the floating plate 7 is connected to the counterweight rod 8, and the counterweight rod 8 is connected to the gravity valve plate 5 through the connecting rope 9, the counterweight rod 8 is connected to the gravity valve plate 5 when the floating plate 7 rises. The weight rod 8 no longer pulls the connecting rope 9, so that the connecting rope 9 no longer pulls the gravity valve plate 5, and then the gravity valve plate 5 can rotate downward under its own weight to close the water inlet hole on the side of the valve shell 4. After closing, the water flowing out of the drip irrigation pipe 1 will no longer enter the valve shell 4, realizing automatic adjustment of the irrigation amount according to the soil moisture content, meeting the water demand of different plant growth, and improving the utilization rate of water resources. In addition, during use, as the soil and the root system of the plant gradually absorb the water discharged from the hollow plug rod 13, the liquid level inside the valve shell 4 will gradually decrease. After the liquid level decreases, the floating plate 7 moves downward together with the counterweight rod 8. At this time, the counterweight rod 8 will pull the connecting rope 9 again to rotate the gravity valve plate 5 upward, realizing the opening of the gravity valve plate 5. At this time, the water can flow out from the water inlet hole again, realizing the re-watering irrigation of the plant root system; The water flowing out of the chute 21 increases the moisture content of the surrounding soil. The water in the soil above the chute 21 flows down along the outer cover 23 under the action of gravity and mixes with the soil to form muddy water. When the muddy water flows downward along the outer cover 23, it passes through the L-shaped convex strip 27. The shielding part 28 on the L-shaped convex strip 27 guides the muddy water to the oblique lower part of the outer cover 23 to prevent the muddy water from directly flowing into the chute 21 and preventing the chute 21 from being blocked. At the same time, the extension part 29 on the L-shaped convex strip 27 extends from the chute 21. When the hollow plug rod 13 is inserted into the soil, the extension part 29 can be used to effectively prevent the soil from entering the chute 21. When the muddy water flows to the extension part 29, the inclined extension surface 30 on the extension part 29 can also guide the muddy water to flow downward to prevent the muddy water from accumulating in the chute 21, greatly reducing the risk of blocking the chute 21 and ensuring stable irrigation of the plants. At the same time, the diameter of the non-woven fabric 19 arranged from top to bottom on the same hollow plug rod 13 is gradually reduced, so that the drainage volume of the infiltration head 15 decreases from top to bottom, effectively achieving the goal of gradually reducing the drainage volume of the infiltration head 15 from top to bottom, accurately meeting the actual demand of the plant root system due to the increase in depth and gradually reducing the water demand, and improving the scientificity and efficiency of the drip irrigation operation process; The outer cover 23 is wrapped around the outside of the protective shell 17. When the hollow plug 13 is inserted into or pulled out of the soil, the outer cover 23 is in direct contact with the soil, effectively preventing the soil from contacting the protective shell 17, thereby preventing the protective shell 17 from loosening on the round seat 16 due to the insertion and removal of the hollow plug 13, ensuring that the protective shell 17 is stably connected to the round seat 16, and preventing water leakage at the connection. The inclined surface 26 on the outer cover 23 can reduce the resistance of the hollow plug 13 when the hollow plug 13 is inserted into the soil. The V-shaped portion 24 reduces the resistance of the hollow plug 13 when it is pulled out of the soil under the guidance of its own shape, making the insertion and removal of the hollow plug 13 more labor-saving and convenient.

[0039] The present invention is applicable to watering fields including but not limited to gardens, sports fields.

[0040] The present invention encompasses any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A water-saving valve for water resources in a water conservancy drip irrigation pipe, comprising a drip irrigation pipe (1), wherein a plurality of drip irrigation holes are provided on the drip irrigation pipe (1), wherein: Also includes: A valve group (3), the valve group (3) comprising a plurality of valve housings (4) attached to the ground, a water inlet hole being provided on the side of the valve housing (4), a connecting pipe (2) being connected between the drip irrigation pipe (1) and the valve housing (4), the connecting pipe (2) being used for connecting the drip irrigation pipe (1) and the valve housing (4), a gravity valve plate (5) being rotatably connected inside the valve housing (4), a regulating component (6) being provided inside the valve housing (4), the regulating component (6) being used for controlling the opening and closing of the gravity valve plate (5), and a penetration mechanism (12) being provided on a side of the valve housing (4) away from the drip irrigation pipe (1), the penetration mechanism (12) being inserted into the soil.

2. The water-saving valve for water resources used in water conservancy drip pipes according to claim 1 is characterized in that: The regulating assembly (6) comprises two floating plates (7) slidably connected to the inside of the valve housing (4); a counterweight rod (8) is fixed between the two floating plates (7); a connecting rope (9) is fixed to the top of the counterweight rod (8); a support rod (10) is fixed to the top of the inner wall of the valve housing (4); an end of the connecting rope (9) away from the counterweight rod (8) passes through the support rod (10) and is rotatably connected to the gravity valve plate (5); when in operation, the gravity valve plate (5) is opened, and water in the drip irrigation pipe (1) passes through the connecting pipe (2) and the valve housing (4) in sequence and enters the inside of the infiltration mechanism (12), and infiltrates into the soil through the infiltration mechanism (12); as the moisture content in the soil at the infiltration mechanism (12) gradually increases, the amount of water discharged from the infiltration mechanism (12) gradually decreases, and the liquid level in the valve housing (4) gradually rises, and the floating plate (7) of the regulating assembly (6) drives the gravity valve plate (5) to close under the action of buoyancy.

3. The water-saving valve for water resources used in water conservancy drip pipes according to claim 2 is characterized in that: Guide rods (11) are fixed to opposite sides of the inner wall of the valve housing (4), and the side surfaces of the floating plate (7) are slidably connected to the side surfaces of the guide rods (11).

4. The water-saving valve for water resources used in water conservancy drip pipes according to claim 1 is characterized in that: The penetration mechanism (12) comprises a group of hollow plug rods (13) fixed to the side of the valve housing (4), the hollow plug rods (13) are inclined, and each group of hollow plug rods (13) has two hollow plug rods, the plant is located between the two hollow plug rods (13), the hollow plug rods (13) are connected to the valve housing (4), the outer wall of the hollow plug rods (13) is provided with a water outlet (14), the water outlet (14) faces the plant, the outer wall of the hollow plug rods (13) is provided with a penetration head (15) at a position corresponding to the water outlet (14), and the end of the hollow plug rod (13) away from the valve housing (4) is in a pointed cone shape.

5. The water-saving valve for water resources used in water conservancy drip pipes according to claim 4 is characterized in that: The permeation head (15) comprises a round seat (16) fixed on the outer wall of the hollow plug rod (13) at a position corresponding to the water outlet (14), a protective shell (17) being clamped on the round seat (16), a non-woven fabric (19) being fixed on the inner wall of the protective shell (17), the central axis of the non-woven fabric (19) coincides with the central axis of the water outlet hole (20), the diameters of a plurality of non-woven fabrics (19) on the same hollow plug rod (13) decrease from top to bottom, a water outlet cavity (18) is provided inside the protective shell (17), a plurality of water outlet holes (20) are provided at the bottom of the inner wall of the water outlet cavity (18), an inclined groove (21) is provided on the side of the protective shell (17), the inclined groove (21) is located obliquely below the water outlet (14), and the inclined groove (21) is connected to the water outlet cavity (18) through the water outlet holes (20).

6. The water-saving valve for water resources used in water conservancy drip pipes according to claim 5 is characterized in that: An outer cover (23) is fixed to the outer wall of the hollow insertion rod (13) corresponding to the protective shell (17), and the outer wall of the protective shell (17) fits the inner wall of the outer cover (23).

7. The water-saving valve for water resources used in water conservancy drip pipes according to claim 6 is characterized in that: The protective shell (17) is fixed with shifting blocks (22) on opposite sides, the outer cover (23) is provided with positioning grooves (25) on opposite sides, the shifting blocks (22) fit inside the positioning grooves (25), and a side of the shifting blocks (22) away from the protective shell (17) is provided with anti-slip grooves.

8. The water-saving valve for water resources used in water conservancy drip pipes according to claim 6 is characterized in that: A V-shaped portion (24) is provided on a side of the outer cover (23) close to the valve housing (4), the tip of the V-shaped portion (24) faces the valve housing (4), and a slope (26) is provided on a side of the outer cover (23) away from the valve housing (4).

9. The water-saving valve for water resources used in water conservancy drip pipes according to claim 6 is characterized in that: An L-shaped convex strip (27) is fixed to a side of the outer cover (23) away from the hollow insertion rod (13), the L-shaped convex strip (27) comprising a shielding portion (28) and an extending portion (29) connected in sequence, the shielding portion (28) being located above the inclined groove (21), and the extending portion (29) being located obliquely below the inclined groove (21).

10. The water-saving valve for water resources used in water conservancy drip pipes according to claim 9, characterized in that: An inclined extension surface (30) is provided on the side of the extension portion (29) corresponding to the inner wall of the inclined groove (21) away from the water outlet hole (20), and the inclination angle of the extension surface (30) is the same as the inclination angle of the inclined groove (21).

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