Shunting vortex type irrigation emitter
By adopting a maze runner structure in the irrigator, the water flow energy is consumed by the shunt, convergence and hedging mixing mechanism, the problem of easy blockage of the irrigator is solved, the hydraulic performance and anti-blocking performance are improved, and it is suitable for low-pressure irrigation conditions.
Patent Information
- Application Number
- CN202420746083.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-11
AI Technical Summary
Existing irrigation devices are prone to scale and blockage, especially under low-pressure irrigation conditions, making it difficult to prevent blockage under large water and sand content, which limits the promotion of drip irrigation technology.
A diversion vortex type water fusion device is designed, adopting a maze runner structure, including water separation and water blocking body. Through mechanisms such as diversion, convergence and hedging blending, the water flow energy is consumed, the hydraulic performance is improved, and the silt is reduced.
It effectively reduces the flow index of the drip irrigator, improves hydraulic performance and anti-blocking performance, ensures uniform water effluent, simple structure, and wide application range.
Smart Images
Figure CN222193460U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural irrigation, in particular to a split-flow vortex type sprinkler. Background Art
[0002] Drip irrigation can greatly improve the utilization rate of water resources and has great utilization efficiency for China, a large agricultural country. However, the disadvantage of the drip irrigation system is also the key to restricting the development of drip irrigation technology—the emitter is prone to scaling and clogging. Large-scale blockage will make the drip irrigation system ineffective, which greatly limits the promotion and application of emitters. In addition, in recent years, some domestic regions have advocated low-pressure irrigation, which undoubtedly puts more stringent requirements on the anti-clogging performance of emitters. Therefore, a flow channel structure is needed that is not easy to clog the emitter even under the working condition of high sand content in the irrigation water, so as to solve the problem that the emitter is very easy to clog and further promote the drip irrigation technology. Summary of the invention
[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a split-flow vortex sprinkler to solve the problems raised in the background technology.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a diversion vortex type water emitter, including a water emitter shell, a water inlet is provided at one end of the water emitter shell, and a water outlet is provided at the other end, a labyrinth flow channel is provided between the water inlet and the water outlet, a plurality of identical structural units connected in series are provided in the labyrinth flow channel, a water diversion body is provided in the structural unit, the area of the water diversion body close to the water inlet is a diversion area, the area of the water diversion body close to the water outlet is a confluence area, and water blocking bodies are provided on the side walls on both sides of the flow channel of the confluence area.
[0005] Preferably, a grid is also provided at the water inlet for filtering some impurities in the water.
[0006] Preferably, the water blocking body is in a triangular prism structure, and the side surface close to the water inlet is an inclined surface.
[0007] Preferably, the water diversion body is in a rectangular parallelepiped structure and is disposed in the middle region of the structural unit, and the water-facing surface of the water diversion body is perpendicular to the water inlet direction.
[0008] Preferably, the water-dividing body is a cuboid with a length of 4 mm and a width of 1.5 mm; and the water-blocking body is an isosceles right-angled triangular prism with a length of 1.5 mm.
[0009] Preferably, the corner areas of the water-dividing body and the water-blocking body are rounded structures.
[0010] Beneficial effects of the utility model:
[0011] 1. The utility model has a different design concept from the traditional sprinkler flow channel. First, the water flow is divided into two streams through the water blocking body. Since the water body will change direction and speed after being blocked, a vortex will be generated, resulting in local head loss and consuming part of the energy. Secondly, due to the sudden contraction and expansion of the flow channel, a vortex will be formed again, resulting in local head loss, and part of the energy will be eliminated again. Then, strong counter-attack and mixing will be formed at the tooth tip of the water blocking body, resulting in greater local head loss and consuming a lot of energy. Finally, the water flow that forms the counter-attack mixing flow will be subjected to the sudden expansion of the flow channel again after passing through one end of the tooth tip of the water blocking body, further eliminating excess energy. This new flow channel structure causes the water flow to lose a lot of energy in the flow channel, thereby improving the hydraulic performance of the sprinkler. Moreover, since the water flow in the flow channel mostly maintains a high-speed flow channel, sediment is not easy to accumulate, and the anti-clogging performance is greatly improved.
[0012] 2. Based on the hydraulic performance of existing sprinklers, the utility model realizes the diversion, sharp turn, and confluence of water flow, increases dissipation, effectively reduces the flow index of the dripper, and improves its hydraulic performance.
[0013] 3. Based on the hydraulic performance of the existing sprinkler, the utility model has a good energy dissipation effect, and also improves the anti-clogging performance of the sprinkler, with uniform water output, simple structure and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of a split-flow vortex type sprinkler;
[0015] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure from an upward perspective;
[0016] Figure 3 for Figure 1 Schematic diagram of the decomposition structure;
[0017] Figure 4 It is a schematic diagram of the labyrinth flow channel of a split-flow vortex emitter;
[0018] Figure 5 for Figure 4 Schematic diagram of the structure of a single structural unit;
[0019] Figure 6 It is a schematic diagram of a water-blocking body of a split-flow vortex-type emitter after rounded corner treatment;
[0020] Figure 7 It is a velocity vector diagram of a split-flow vortex type water emitter;
[0021] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of one of the areas;
[0022] Fig. 9 This is a pressure cloud diagram of a split-flow vortex emitter;
[0023] Fig.10 This is a numerical simulation diagram of sand particle movement trajectory in a split-flow vortex emitter;
[0024] Fig.11 This is a numerical simulation of the sand particle movement trajectory of a split-flow vortex emitter after the water barrier is rounded.
[0025] Fig.12 A pressure-flow relationship curve diagram of a split-flow vortex emitter;
[0026] Fig.13 This is a pressure-flow relationship curve of a diversion vortex type water emitter after the water-blocking body is rounded. DETAILED DESCRIPTION
[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] like Figure 1-3 As shown, a diversion vortex type water emitter 9 comprises a water emitter shell 9, wherein a water inlet 1 is provided at one end of the water emitter shell, and a water outlet 2 is provided at the other end, a labyrinth flow channel 7 is provided between the water inlet 1 and the water outlet 2, a plurality of identical structural units 8 which are connected in series are provided in the labyrinth flow channel 7, a water diversion body 3 is provided in the structural unit 8, an area of the water diversion body 3 close to the water inlet 1 is a diversion area 5, an area of the water diversion body 3 close to the water outlet 2 is a confluence area 6, and water blocking bodies 4 are provided on both side walls of the flow channel of the confluence area 6.
[0029] Preferably, a grid 1.1 is further provided at the water inlet 1 for filtering some impurities in the water.
[0030] Preferably, the water blocking body 4 is in a triangular prism structure, and the side surface thereof close to the water inlet 1 is an inclined surface.
[0031] Preferably, the water diversion body 3 is in a rectangular parallelepiped structure and is disposed in the middle area of the structural unit 8, and the water-facing surface of the water diversion body 3 is perpendicular to the water inlet direction.
[0032] Preferably, the water-dividing body 3 is a cuboid with a length of 4 mm and a width of 1.5 mm; and the water-blocking body 4 is an isosceles right-angled triangular prism with a length of 1.5 mm.
[0033] Preferably, the corners of the water diversion body 3 and the water blocking body 4 are rounded. Figure 6 , 11 As shown in Figure 12, this rounded corner structure improves the hydraulic performance and anti-clogging performance of the emitter.
[0034] The specific working principle of the utility model is as follows:
[0035] When the water flows through the water diversion body 3, the water body is divided into two streams, and due to the obstruction of the water diversion body 3, the speed and direction of the original water flow will be changed, thereby generating a vortex in the diversion area 5, consuming part of the energy; and due to the sudden contraction and expansion of the flow channel, a vortex will be formed again in the confluence area 6, resulting in local head loss, and once again eliminating part of the energy, and finally a strong counter-attack and mixing will be formed at the tooth tip of the water blocking body 4, resulting in a greater local head loss, consuming a lot of energy, and the water flow forming the counter-attack mixed flow will be subjected to the sudden expansion of the flow channel again at one end of the tooth tip 4 of the water blocking body, further eliminating excess energy; in the whole process, the water flow is continuously diverted and merged to form a vortex and counter-attack, realizing the consumption of water flow energy, and because the water flow maintains high-speed flow in the flow channel most of the time, the anti-clogging performance is good.
[0036] Embodiment 1:
[0037] This embodiment describes the maze flow channels of 10 flow channel structure units, as shown in the attached figure. Figure 1 ~Attached Figure 3 As shown, the utility model includes a water inlet and a water outlet, a labyrinth flow channel is provided in the flow channel between the water inlet and the water outlet, and a plurality of identical structural units are provided in the labyrinth flow channel, wherein the structural units include a water diversion body 3, a water blocking body 4, a diversion area 5 and a confluence area 6.
[0038] As attached Figure 1 ~Attached Figure 3 As shown, the specific dimensions of this embodiment are: the water inlet grille is 1 mm long and 0.8 mm wide. To ensure that the water flow can smoothly flow into the branch channel, the channel width is 1 mm; the water diversion body 3 is a rectangular structure with a length of 4 mm and a width of 1.5 mm; the water blocking body 4 is a 90° isosceles triangle structure with a length of 1.5 mm, and its included angle is 45°.
[0039] Embodiment 2:
[0040] As attached Figure 7 and attached Figure 8 As shown, the utility model uses fluent software close to the actual situation for numerical simulation, and simulates the velocity distribution of the fluid in the local flow channel of the emitter. By observing the velocity vector diagram, it can be seen that the water flow generates vortices in the diversion area 6 and the confluence area 7, respectively, consuming local energy, and forms strong impact and mixing at the tooth tip of the water blocking body 4, resulting in greater local head loss and increasing the energy consumption of the water flow. This is the key factor for the good hydraulic performance of the emitter. Fig. 9 It can be seen that the pressure decreases step by step from the inlet to the outlet, and the head loss in each unit section is basically the same.
[0041] Embodiment 3:
[0042] As attached Figure 10-11 As shown in the figure, the discrete phase model of the fluent software is used, and the viscosity model uses the RNG k-ε model, which can well handle flows with large streamline curvature. The sand particle size is set to 0.05 mm and the density is 2500 g / m 3 , the sediment content is 1%. It can be clearly seen from the particle trajectory diagram that after the improved flow channel, the sediment particles can be discharged smoothly out of the flow channel, and it is difficult for sediment to accumulate in the flow channel. Compared with the conventional emitter, the anti-blocking performance of the flow channel is significantly improved.
[0043] At present, there are two main forms of energy dissipation, one is counter-attack energy dissipation and the other is vortex energy dissipation. The utility model adopts a combination of vortex energy dissipation and counter-attack energy dissipation to fully dissipate energy of the emitter.
[0044] Embodiment 4:
[0045] As attached Fig.12 As shown, the utility model uses fluent software close to the actual situation to perform numerical simulation, simulates the fluid velocity distribution in the local flow channel of the emitter, and obtains a pressure-flow relationship curve. Fig.12 The horizontal axis is the working pressure h (KPa) at the water inlet, and the vertical axis is the water flow rate q (L / h). The flow index is 0.4812, which meets the hydraulic performance requirements of the emitter. The hydraulic performance is good, and the energy consumption of the flow channel unit is obvious. The flow index of the conventional drip irrigation device is about 0.6000, while the Fig.13 The horizontal axis is the working pressure h (KPa) at the water inlet, and the vertical axis is the water flow rate q (L / h). It can be obtained that the flow index is 0.4672. The flow index is reduced, which shows that the effect is obvious and the hydraulic performance of the emitter is improved. Compared with the existing emitters, the flow channel of the split vortex emitter provided in this embodiment has improved water outlet uniformity, good energy dissipation effect, simple flow channel unit structure, and significantly improved anti-blocking performance.
[0046] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.
Claims
1. A split-flow vortex type water emitter, comprising a water emitter housing (9), wherein one end of the water emitter housing (9) is provided with a water inlet (1), and the other end is provided with a water outlet (2), a labyrinth flow channel (7) is provided between the water inlet (1) and the water outlet (2), and a plurality of identical structural units (8) are provided in series in the labyrinth flow channel (7), characterized in that: A water diversion body (3) is provided in the structural unit (8); an area of the water diversion body (3) close to the water inlet (1) is a diversion area (5); an area of the water diversion body (3) close to the water outlet (2) is a confluence area (6); and water blocking bodies (4) are provided on the side walls of the flow channel of the confluence area (6).
2. A split-flow vortex emitter according to claim 1, characterized in that: A grid (1.1) is also provided at the water inlet (1) for filtering some impurities in the water.
3. A split-flow vortex emitter according to claim 1, characterized in that: The water blocking body (4) is in the form of a triangular prism structure, and the side surface thereof close to the water inlet (1) is an inclined surface.
4. A split-flow vortex emitter according to claim 3, characterized in that: The water diversion body (3) is in the form of a rectangular parallelepiped structure and is arranged in the middle region of the structural unit (8); the water-facing surface of the water diversion body (3) is perpendicular to the water inlet direction.
5. A split-flow vortex emitter according to claim 4, characterized in that: The water-dividing body (3) is a rectangular parallelepiped with a length of 4 mm and a width of 1.5 mm; the water-blocking body (4) is an isosceles right-angled triangular prism with a length of 1.5 mm.
6. A split-flow vortex emitter according to claim 1, characterized in that: The corner areas of the water diversion body (3) and the water blocking body (4) are rounded structures.