Flow-adjustable bidirectional flow channel irrigation emitter

Abstract

The utility model discloses a flow adjustable two -way flow channel irrigator, including irrigator body, irrigator body one end is equipped with the water inlet, and the other end is equipped with the water outlet, and the inside of irrigator body is equipped with the labyrinthus flow channel who is connected with water inlet and water outlet respectively, the labyrinthus flow channel includes the main flow channel who sets up the structure of straight flow channel and the branch flow channel who is the structure of curved flow channel, set up the shunt block between main flow channel and branch flow channel, the shunt block and water retaining block sliding fit, and the water retaining block top is connected with operating lever through connecting rod, not only can adjust the flow, to satisfy different time, different crops, different water requirement under different conditions, and improve the hydraulic performance of irrigator, also played the role of flushing flow channel, make the silt not easy to deposit, and the anti -clogging performance greatly improves.

Description

Technical Field

[0001] This utility model relates to the field of irrigation device design technology, specifically to an adjustable flow bidirectional channel irrigation device. Background Technology

[0002] Irrigation water is becoming increasingly scarce in arid and semi-arid regions of China. Micro-irrigation, which allows for timely and appropriate irrigation of crop roots, effectively reduces surface water evaporation and greatly improves irrigation water use efficiency, thus becoming one of the effective ways to alleviate this problem. The emitter is the most critical component of a micro-irrigation system; its structure, hydraulic performance, and quality directly affect the uniformity and reliability of the irrigation system. In recent years, as a core component of drip irrigation systems, the emitter has become a key focus of research on drip irrigation technology in various countries.

[0003] The flow channels of existing drip irrigation emitters typically employ labyrinthine flow channels, which mainly use complex boundary conditions to depressurize the water flow and create turbulence. These boundary conditions are usually formed by straight lines and circular arcs. However, they cannot actively regulate the flow rate. To meet the different water requirements of different times, different crops, and different conditions, the flow rate needs to be adjusted to cope with these situations. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a bidirectional flow channel irrigation device with adjustable flow rate, which can adjust the flow rate to meet the different water requirements of different times, different crops and different conditions.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a flow-adjustable bidirectional channel irrigator, comprising an irrigator body, an inlet at one end of the irrigator body and an outlet at the other end, a labyrinth channel inside the irrigator body that is connected to the inlet and the outlet respectively, the labyrinth channel comprising a main channel with a straight flow structure and a branch channel with a curved flow structure, a diverting block between the main channel and the branch channel, the diverting block slidingly engaging with a water-blocking block, the top of the water-blocking block being connected to an operating rod via a connecting rod.

[0006] Preferably, the branch channel has a U-shaped curved channel structure, with one end being longer and the other end being shorter.

[0007] Preferably, the surface of the operating rod is provided with a pin hole for inserting a locking pin, and the upper surface of the water dispenser body is provided with a plurality of limiting holes that cooperate with the locking pin.

[0008] Preferably, the number of limiting holes is four.

[0009] Preferably, the watering device body includes a middle plate located in the middle, a labyrinth flow channel is provided inside the middle plate, an upper cover plate is provided on the upper surface of the middle plate, and a lower cover plate is provided on the lower surface of the middle plate.

[0010] Preferably, a limiting hole is formed on the surface of the upper cover plate.

[0011] Preferably, the surface of the upper cover plate is also provided with a clearance groove that cooperates with the connecting rod.

[0012] Preferably, a filter screen is also provided at the water inlet.

[0013] Preferably, the tributary channels are evenly spaced on both sides of the main channel.

[0014] The beneficial effects of this utility model are:

[0015] This invention differs from the design concept of traditional irrigation channels. By adjusting different settings according to different water demands, a completely new channel structure is formed. This not only allows for flow rate adjustment to meet the varying water demands of different times, crops, and conditions, but also improves the hydraulic performance of the irrigation device. Furthermore, it serves to flush the channel, preventing sediment buildup and significantly enhancing its anti-clogging performance. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of a flow-adjustable bidirectional channel irrigation device;

[0017] Figure 2 This is an exploded structural diagram of a flow-adjustable bidirectional channel water emitter.

[0018] Figure 3 This is a schematic diagram of the structure when the diversion block and the water-blocking block are in sliding fit.

[0019] Figure 4 A vector diagram showing the speed of a single setting in a flow-adjustable bidirectional channel irrigation system.

[0020] Figure 5 A vector diagram showing the speed of a two-speed adjustable bidirectional flow channel water emitter.

[0021] Figure 6 A vector diagram showing the three speed settings of a two-way flow channel water emitter with adjustable flow rate.

[0022] Figure 7 A vector diagram showing the four speed settings of a two-way flow channel water emitter with adjustable flow rate.

[0023] Figure 8 Numerical simulation of sand particle movement trajectory diagram for a first setting of a flow-adjustable bidirectional channel water emitter;

[0024] Figure 9Numerical simulation of sand particle movement trajectory diagram for a two-stage adjustable flow channel water emitter;

[0025] Figure 10 Numerical simulation of sand particle movement trajectory diagram for a three-level adjustable flow bidirectional channel water emitter;

[0026] Figure 11 Numerical simulation of sand particle movement trajectory diagram for a four-level adjustable flow bidirectional channel water emitter;

[0027] Figure 12 A pressure-flow rate curve for the first setting of a flow-adjustable bidirectional channel water emitter;

[0028] Figure 13 Pressure-flow relationship curves for two levels of a flow-adjustable bidirectional channel water emitter;

[0029] Figure 14 Pressure-flow relationship curves for three levels of a flow-adjustable bidirectional channel water emitter;

[0030] Figure 15 This is a pressure-flow relationship curve diagram for a four-level adjustable bidirectional flow channel water emitter. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Example 1:

[0033] like Figures 1 to 3 As shown, a flow-adjustable bidirectional channel irrigator includes an irrigator body 1. The irrigator body 1 has an inlet 2 at one end and an outlet 3 at the other end. Inside the irrigator body 1, there is a labyrinth channel 4 that is connected to the inlet 2 and the outlet 3 respectively. The labyrinth channel 4 includes a main channel 4.1 with a straight channel structure and a branch channel 4.2 with a curved channel structure. A diverting block 4.3 is provided between the main channel 4.1 and the branch channel 4.2. The diverting block 4.3 is slidably engaged with a water-blocking block 5. The top of the water-blocking block 5 is connected to an operating rod 7 through a connecting rod 6.

[0034] Preferably, the branch channel 4.2 has a U-shaped curved channel structure, with one end being longer and the other end being shorter.

[0035] Preferably, the operating lever 7 has a pin hole for inserting a locking pin 8, and the upper surface of the water dispenser body 1 has multiple limiting holes 9 that cooperate with the locking pin 8. Each time the water-blocking block 5 is adjusted to block the water flow of the main channel 4.1, the locking pin 8 is first pulled out from the limiting hole 9, and then the operating lever 7 is pushed to move the water-blocking block 5 to the corresponding position on the diverting block 4.3. Then, the position of the water-blocking block 5 is fixed by inserting the locking pin 8 into another limiting hole 9. The above process enables the water-blocking block 5 to have different flow adjustment functions.

[0036] Preferably, the number of limiting holes 9 is four. In this embodiment, the four limiting holes 9 correspond to four flow rates of the water-blocking block 5, where the water-blocking block 5 of the first rate extends into the main channel 4.1 to the smallest depth (blocking the water flow of the main channel 4.1 to the smallest extent), and so on, with the water-blocking block 5 of the fourth rate extending into the main channel 4.1 to the largest depth (blocking the water flow of the main channel 4.1 to the largest extent).

[0037] Preferably, the water emitter body 1 includes a central plate 1.1, with a labyrinthine flow channel 4 inside the central plate 1.1. An upper cover plate 1.2 is provided on the upper surface of the central plate 1.1, and a lower cover plate 1.3 is provided on the lower surface of the central plate 1.1. This design facilitates the manufacture of the water emitter body 1, and ensures a sealed connection between the upper cover plate 1.2, the central plate 1.1, and the lower cover plate 1.3.

[0038] Preferably, a limiting hole 9 is formed on the surface of the upper cover plate 1.2.

[0039] Preferably, the surface of the upper cover plate 1.2 is also provided with a relief groove 10 that cooperates with the connecting rod 6. By providing the relief groove 10, the movement of the connecting rod 6 can be prevented from being blocked as the water-blocking block 5 moves to the corresponding position on the diversion block 4.3.

[0040] Preferably, a filter screen 11 is also provided at the inlet 2. By setting the filter screen 11, large particles of mud and sand can be blocked from entering the labyrinth channel 4; in addition, the flow-adjustable bidirectional channel water dispenser of this utility model is bidirectional. After adjusting the direction (the direction needs to be adjusted during flushing), the inlet 2 will become the outlet and the outlet 3 will become the inlet. At this time, the filter screen can be installed at the outlet 3.

[0041] Preferably, the tributary channels 4.2 are evenly spaced on both sides of the main channel 4.1.

[0042] As attached Figure 1 ~Attached Figure 3 As shown, the specific dimensions of this embodiment are as follows: the main channel 4.1 and the upper and lower branch channels 4.2 are both 1mm wide, and the included angle between the branch channel 4.2 and the main channel 4.1 is 45°.

[0043] The working principle of this embodiment is as follows:

[0044] In this embodiment, water flows from inlet 2 into the labyrinth channel 4, enters the main channel 4.1, and is then diverted by the diversion block 4.3 into the branch channel 4.2. Since the branch channel 4.2 has a tortuous flow structure, when the water flows out of the branch channel 4.2, it forms an opposing current with the water flow in the main channel 4.1, creating a vortex and effectively dissipating energy. Then it flows to the next branch channel 4.2, and the cycle repeats to dissipate energy. When it is necessary to adjust the water flow rate in the labyrinth channel 4, the locking pin 8 is first pulled out from the limiting hole 9, and then the operating rod 7 is pushed to move the water-blocking block 5 to the corresponding position on the diversion block 4.3. After that, the position of the water-blocking block 5 is fixed by inserting the locking pin 8 into another limiting hole 9. The above process enables the water-blocking block 5 to have different flow rate adjustment functions.

[0045] Example 2:

[0046] As attached Figure 4 and attached Figure 8 As shown, this invention uses Fluent software, which is similar to reality, for numerical simulation. When the water-blocking block 5 of the water emitter is adjusted to the first position, the fluid velocity distribution in the local flow channel is simulated. By observing the velocity vector diagram, it can be seen that most of the water will pass through the main flow channel, and a small part of the water will pass through the upper and lower flow channels. When the water emitter is adjusted to the second, third, or fourth position, most of the water will pass through the upper and lower flow channels and form vortices at the junction of the main flow channel and the upper and lower flow channels to dissipate energy.

[0047] Example 3:

[0048] As attached Figure 4 and attached Figure 12 As shown, the invention uses Fluent software, which closely resembles real-world simulations, for numerical modeling. When the water-blocking block 5 of the irrigation device is adjusted to the first position, water first flows in through the inlet, with most of the water passing through the main channel and a small portion passing through the upper and lower channels. The particle trajectory diagram reveals that sediment particles tend to swirl in the upper and lower channels, potentially causing blockages. At a water head of 10 meters, the flow rate is 19.24 L / h, and the flow regime index is 0.5331.

[0049] Example 4:

[0050] As attached Figure 5 and attached Figure 13As shown, the invention uses Fluent software, which closely resembles real-world simulations, for numerical modeling. When the water-blocking block 5 of the irrigation device is adjusted to the second position, the water first flows in through the inlet, with most of the water flowing into the upper channel, then the main channel, and finally the lower channel, in a continuous cycle. This is because the auxiliary internal toothed water-blocking component narrows the main channel, allowing more water to flow into the upper or lower channel, and creating vortices in the section flowing into the main channel to dissipate energy. Compared to the first position, the particle trajectory diagram at the second position clearly shows that the frequency of sediment particles spinning in the channel is reduced, making it easier for them to flow out, thus improving anti-clogging performance. Due to the auxiliary internal toothed water-blocking component, at the same 10-meter water head, the flow rate when sliding to the fourth groove is significantly lower than at the first position, decreasing to 12.22 L / h, thus regulating the flow rate. The flow index is slightly lower than at the first position, at 0.5124.

[0051] Example 5:

[0052] As attached Figure 6 and attached Figure 14 As shown, the invention uses Fluent software, which closely resembles real-world simulations, for numerical modeling. When the water-blocking block 5 of the irrigation device is adjusted to the third position, the water first flows in through the inlet, with most of the water flowing into the upper channel, then the main channel, and finally the lower channel, in a continuous cycle. This is because the auxiliary internal toothed water-blocking component narrows the main channel, allowing more water to flow into the upper or lower channel, and creating vortices in the section flowing into the main channel to dissipate energy. Compared to the first position, the particle trajectory diagram at the third position clearly shows that the frequency of sediment particles spinning in the channel decreases, making it easier for them to flow out, thus improving anti-clogging performance. Due to the auxiliary internal toothed water-blocking component, at the same 10-meter water head, the flow rate when sliding to the fourth groove is significantly lower than at the first position, decreasing to 8.55 L / h, thus regulating the flow rate. The flow index is slightly lower than at the first position, at 0.5076.

[0053] Example 6:

[0054] As attached Figure 7 and attached Figure 15As shown, the invention uses Fluent software, which closely resembles real-world simulations, for numerical modeling. When the water-blocking block 5 of the irrigation device is adjusted to the fourth position, the water first flows in through the inlet, with most of the water flowing into the upper channel, then the main channel, and finally the lower channel, in a continuous cycle. This is because the auxiliary internal toothed water-blocking component narrows the main channel, allowing more water to flow into the upper or lower channel, and creating vortices in the section flowing into the main channel to dissipate energy. Compared to the first position, the particle trajectory diagram at the fourth position clearly shows that the frequency of sediment particles spinning in the channel decreases, making it easier for them to flow out, thus improving anti-clogging performance. Due to the auxiliary internal toothed water-blocking component, at the same 10-meter water head, the flow rate when sliding to the fourth position groove is significantly reduced compared to the first position, decreasing to 6.76 L / h, effectively regulating the flow rate. The flow index is slightly lower than at the first position, at 0.5176.

[0055] Example 7:

[0056] As attached Figure 9 - Appendix Figure 12 As shown, using the discrete phase model in Fluent software, the RNG k-ε model is selected for the viscosity model, which can well handle flows with large streamline tortuosity. Sand with a particle size of 0.125 mm and a density of 2500 kg / m³ is used. 3 The sediment content is 1%. Comparing the particle trajectory diagrams of levels one, two, three, and four, it is clear that the easily clogged areas of level one are the water flow areas of levels two, three, and four, achieving a flushing purpose. Furthermore, the improved flow channel allows sediment particles to be smoothly discharged outside the channel, preventing sediment accumulation inside, significantly improving the anti-clogging performance compared to the original water dispenser's flow channel.

[0057] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The embodiments and features described in this application can be arbitrarily combined without conflict. The protection scope of this utility model should be defined as the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A flow-adjustable bidirectional channel irrigation device, comprising an irrigation device body (1), wherein one end of the irrigation device body (1) is provided with an inlet (2) and the other end is provided with an outlet (3), and the irrigation device body (1) is provided with a labyrinth channel (4) connected to the inlet (2) and the outlet (3) respectively, characterized in that: The labyrinth flow channel (4) includes a main flow channel (4.1) with a straight flow channel structure and a branch flow channel (4.2) with a curved flow channel structure. A diversion block (4.3) is provided between the main flow channel (4.1) and the branch flow channel (4.2). The diversion block (4.3) is slidably engaged with the water-blocking block (5). The top of the water-blocking block (5) is connected to the operating rod (7) through a connecting rod (6).

2. The adjustable flow bidirectional channel water dispenser according to claim 1, characterized in that: The branch channel (4.2) is a U-shaped curved channel structure, with one end being longer and the other end being shorter.

3. The adjustable flow bidirectional channel irrigation device according to claim 1, characterized in that: The operating lever (7) has a pin hole for inserting a locking pin (8) on its surface, and the water dispenser body (1) has multiple limiting holes (9) that cooperate with the locking pin (8) on its upper surface.

4. The adjustable flow bidirectional channel water dispenser according to claim 3, characterized in that: The number of limiting holes (9) is four.

5. The adjustable flow bidirectional channel water dispenser according to claim 3, characterized in that: The water dispenser body (1) includes a middle plate (1.1) located in the middle, a labyrinth flow channel (4) is provided inside the middle plate (1.1), an upper cover plate (1.2) is provided on the upper surface of the middle plate (1.1), and a lower cover plate (1.3) is provided on the lower surface of the middle plate (1.1).

6. The adjustable flow bidirectional channel water emitter according to claim 5, characterized in that: The upper cover plate (1.2) has a limiting hole (9) on its surface.

7. The adjustable flow bidirectional channel water dispenser according to claim 5, characterized in that: The surface of the upper cover plate (1.2) is also provided with a relief groove (10) that cooperates with the connecting rod (6).

8. The adjustable flow bidirectional channel water emitter according to claim 1, characterized in that: A filter screen (11) is also provided at the water inlet (2).

9. A flow-adjustable bidirectional channel irrigation device according to claim 1 or 2, characterized in that: The tributary channels (4.2) are evenly spaced on both sides of the main channel (4.1).

Images