Small-flow buried water dropper

Abstract

The utility model discloses a small-flow buried water dropper, which relates to the technical field of drip irrigation and comprises a core body and a pipe body. The pipe body comprises a first cylinder and a second cylinder, the first cylinder is provided with a first water-permeable window and a second water-permeable window, and a flow channel assembly is arranged on the outer surface of the first cylinder; a water-permeable gap is formed between the outer surface of the second cylinder and the inner surface of the pipe body, and a non-return convex rib is arranged on the outer surface of the second cylinder; water permeable holes are formed in the side wall of the pipe body. When in use, the water-saving drip irrigation device is buried in shallow soil and can be prevented from being irradiated by sunlight, water drops flowing out of drip irrigation directly permeate into the ground, evaporation loss is reduced, the utilization rate of irrigation water is improved, and water-saving irrigation is achieved. After irrigation is stopped, the inner cavity of the pipe body is in a negative pressure state, silt near the water permeable holes can be sucked back into the water permeable gaps, and the non-return convex ribs are used for increasing the flowing resistance of the silt in the water permeable gaps, so that the silt is limited to the positions near the water permeable holes as much as possible, and the silt is prevented from flowing into the flow channel assembly to cause blockage.

Description

TECHNICAL FIELD

[0001] The utility model relates to drip irrigation technical field, concretely relates to a small flow buried dripper. BACKGROUND

[0002] Drip irrigation is a technical scheme that utilizes a pipeline to send irrigation water to crop roots through water-permeable holes or dripper cores for local irrigation. In actual use, the dripper core is usually arranged at the water-permeable hole position in the inner cavity of the pipeline, so as to increase the flow resistance of the irrigation water at the position, thereby reducing the flow rate and realizing drip irrigation.

[0003] In the conventional technology, when irrigation is stopped, negative pressure is generated in the inner cavity of the pipeline, so that the external silt is sucked to the dripper core position through the water-permeable hole, resulting in the blockage of the flow channel on the surface of the dripper core; and the subsequent irrigation operation is affected. SUMMARY

[0004] In order to overcome the problem of "the negative pressure in the inner cavity of the pipeline sucking the external silt to the dripper position through the water-permeable hole, resulting in the blockage of the flow channel on the surface of the dripper" in the background art, the utility model provides a small flow buried dripper.

[0005] The utility model adopts the technical scheme that solves the above technical problems:

[0006] A small flow buried dripper, comprising a core body and a pipe body arranged on the surface of the core body; the pipe body comprises a first cylinder and a second cylinder coaxially fixedly connected with the first cylinder, a first water-permeable window and a second water-permeable window are arranged on the middle part of the side wall of the first cylinder along the radial direction, and a flow channel assembly is arranged on the outer surface of the first cylinder and communicates with the first water-permeable window and the second water-permeable window; a water-permeable gap is arranged between the outer surface of the second cylinder and the inner surface of the pipe body, a check convex rib is arranged on the outer surface of the second cylinder and used for supporting the water-permeable gap and preventing the backflow of silt; the water-permeable gap communicates with the flow channel assembly; a water-permeable hole is arranged on the side wall of the pipe body, and the water-permeable hole is located at the outer periphery of the second cylinder.

[0007] As a further optimization scheme of the utility model, the check convex rib is in V shape and the opening thereof faces away from the first cylinder.

[0008] As a further optimization scheme of the utility model, the first water-permeable window and the second water-permeable window are arranged along the diameter direction of the first cylinder.

[0009] As a further optimization scheme of the utility model, the inner end of the first water-permeable window communicates with the inner cavity of the first cylinder, and the outer end thereof communicates with the flow channel assembly; the inner end of the second water-permeable window communicates with the inner cavity of the first cylinder, and the outer end thereof communicates with the flow channel assembly.

[0010] As a further optimization scheme of the utility model, the first water-permeable window and the second water-permeable window are protruded inwards with the first cylinder inner wall as the reference.

[0011] As a further optimization scheme of the utility model, the flow channel assembly comprises a first flow channel, a second flow channel, a third flow channel, a fourth flow channel, a fifth flow channel and a sixth flow channel; the first flow channel is arranged in a U shape outside the first water-permeable window, and the second flow channel is arranged in a U shape outside the second water-permeable window; the second water-permeable window is communicated with the beginning end of the third flow channel, and the end of the third flow channel is communicated with the first water-permeable window; the first water-permeable window is communicated with the beginning end of the first flow channel, and the end of the first flow channel is communicated with the beginning end of the fourth flow channel; the end of the fourth flow channel is communicated with the beginning end of the second flow channel, the second flow channel is communicated with the fifth flow channel, the fifth flow channel is communicated with the beginning end of the sixth flow channel, and the end of the sixth flow channel is communicated with the water-permeable gap.

[0012] As a further optimization scheme of the utility model, the third flow channel and the fourth flow channel are arranged in a two-character shape, and the third flow channel and the fourth flow channel are arranged between the first water-permeable window and the second water-permeable window.

[0013] As a further optimization scheme of the utility model, the outer surface of the second cylinder is provided with a flow guide convex rib, and the flow guide convex rib is arranged at the inlet position of the water-permeable gap.

[0014] As a further optimization scheme of the utility model, the flow guide convex rib and the check convex rib are arranged alternately.

[0015] As a further optimization scheme of the utility model, the first water-permeable window and the second water-permeable window are respectively provided with a grating.

[0016] In summary, the utility model has the advantages of:

[0017] (1) when used, the utility model is buried in the shallow soil, can avoid being irradiated by sunlight, then the water drops of drip irrigation directly infiltrate into the underground, reduces the evaporation loss, improves the utilization rate of irrigation water, and realizes water-saving irrigation.

[0018] (2) after stopping irrigation, the inner cavity of the pipe body is in a negative pressure state, can suck the silt near the water-permeable hole into the water-permeable gap, the check convex rib is used for increasing the flow resistance of the silt in the water-permeable gap, thereby the silt is limited as far as possible at the position near the water-permeable hole, and the silt is prevented from flowing into the flow channel assembly to cause blockage.

[0019] (3) the check convex rib is in a V shape and the opening faces away from the first cylinder, and the inlet of the water-permeable gap is located at the edge position of the water-permeable gap close to the first cylinder, so that the opening of the check convex rib faces away from the inlet of the water-permeable gap, thereby the blocking effect on the silt is enhanced.

[0020] (4) The core is placed in the pipe body, and a gap is reserved between adjacent cores, so that convenient assembly can be realized and the bendable performance of the pipe body itself is reserved, thereby improving the burying convenience and improving the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below with reference to the drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the core structure;

[0024] Figure 3 It is a schematic diagram of the position and structure of the first water-permeable window, the flow channel assembly, the check convex rib and the flow guide convex rib;

[0025] Figure 4 It is a schematic diagram of the structure expansion of the first water-permeable window, the second water-permeable window and the flow channel assembly;

[0026] Figure 5 It is a schematic diagram of the structure expansion of the check convex rib, the flow guide convex rib and the water-permeable gap;

[0027] Figure 6 It is a schematic diagram of the convex state in the first water-permeable window and the second water-permeable window.

[0028] Explanation of reference signs:

[0029] In the drawings,

[0030] 1, pipe body; 11, water-permeable hole;

[0031] 2, core; 21, first cylinder; 211, first water-permeable window; 212, second water-permeable window; 213, flow channel assembly; 2131, first flow channel; 2132, second flow channel; 2133, third flow channel; 2134, fourth flow channel; 2135, fifth flow channel; 2136, sixth flow channel; 22, second cylinder; 220, water-permeable gap; 221, check convex rib; 222, flow guide convex rib; 223, plugging convex rib. DETAILED DESCRIPTION

[0032] According to the above structural features of the application, the embodiments of the application are further described:

[0033] Reference Figure 1The embodiment provides a small-flow buried dripper, which comprises a core body 2 and a pipe body 1 arranged on the surface of the core body 2. In use, a plurality of core bodies 2 are inserted into a single pipe body 1, and then the utility model is buried in shallow soil (for example, the depth is 1-10 cm); the end of the pipe body 1 is connected with and communicated with a water source and a water pump, so that the buried drip irrigation can be realized. The buried drip irrigation can avoid the sunlight irradiation, the water drops dripped from the drip irrigation can directly infiltrate into the underground, the evaporation loss is reduced, the utilization rate of irrigation water is improved, and water-saving irrigation is realized.

[0034] Referring to Figures 2-4 The pipe body 1 comprises a first cylinder 21 and a second cylinder 22 coaxially fixedly connected with the first cylinder 21 (for example, integrally fixedly connected), and first water-permeable windows 211 and second water-permeable windows 212 are arranged on the side wall of the first cylinder 21 in the radial direction. The first water-permeable windows 211 are in the shape of rectangular through grooves, and the second water-permeable windows 212 are in the shape of rectangular through grooves. The length direction of the first water-permeable windows 211 and the length direction of the second water-permeable windows 212 are arranged in parallel. The first water-permeable windows 211 are arranged on the side wall of the first cylinder 21, and the length direction of the first water-permeable windows 211 is parallel to the axial direction of the first cylinder 21; the second water-permeable windows 212 are arranged on the side wall of the first cylinder 21, and the length direction of the second water-permeable windows 212 is parallel to the axial direction of the first cylinder 21. The outer surface of the first cylinder 21 is provided with flow channel assemblies 213 in communication with the first water-permeable windows 211 and the second water-permeable windows 212. The flow channel assemblies 213 are arranged in a recessed manner inwardly based on the outer surface of the first cylinder 21.

[0035] Referring to Figure 2 With Figure 3 The outer surface of the second cylinder 22 is provided with water-permeable gaps 220 between the outer surface of the second cylinder 22 and the inner surface of the pipe body 1, and the outer surface of the second cylinder 22 is provided with check convex ribs 221 for supporting the water-permeable gaps 220 and preventing the backflow of silt; the water-permeable gaps 220 are in communication with the flow channel assemblies 213.

[0036] Referring to Figure 2 With Figure 3 The side wall of the pipe body 1 is provided with water-permeable holes 11 located at the outer periphery of the second cylinder 22. The irrigation water flows into the flow channel assemblies 213 through the first water-permeable windows 211 and the second water-permeable windows 212, and further flows into the water-permeable gaps 220; the check convex ribs 221 are used for supporting the pipe body 1, so that the gap width of the water-permeable gaps 220 is not zero, thereby ensuring that the irrigation water can smoothly flow into the soil through the water-permeable gaps 220 and the water-permeable holes 11.

[0037] Referring to Figure 2 With Figure 3Because the inner cavity of the pipe body 1 is in a negative pressure state after stopping irrigation, the silt near the water permeable hole 11 is sucked back into the water permeable gap 220, the check convex rib 221 is used to increase the flow resistance of the silt in the water permeable gap 220, so as to limit the silt as much as possible at the position near the water permeable hole 11, and avoid the silt flowing into the flow channel assembly 213 to cause blockage (the flow channel assembly 213 is curved, which is used to increase the flow resistance of the internal irrigation water, so as to reduce the flow rate and realize drip irrigation; therefore, when the silt flows back into the flow channel assembly 213, it is difficult to discharge the silt through hydraulic pressure, resulting in blockage).

[0038] With reference to Figure 2 , Figure 3 and Figure 5 , the check convex rib 221 is V-shaped and the opening faces away from the first cylinder body 21, and the inlet of the water permeable gap 220 is located at the edge of the water permeable gap 220 close to one side of the first cylinder body 21, so that the opening of the check convex rib 221 faces away from the inlet of the water permeable gap 220, thereby enhancing the blocking effect of the silt.

[0039] With reference to Figure 6 , the first water permeable window 211 and the second water permeable window 212 are arranged along the diameter direction of the first cylinder body 21. The inner end of the first water permeable window 211 is in communication with the inner cavity of the first cylinder body 21, and the outer end is in communication with the flow channel assembly 213; the inner end of the second water permeable window 212 is in communication with the inner cavity of the first cylinder body 21, and the outer end is in communication with the flow channel assembly 213.

[0040] With reference to Figure 6 , the first water permeable window 211 and the second water permeable window 212 are both protruded inward with the inner wall of the first cylinder body 21 as the reference, so that the cross-sectional area of the inner cavity of the first cylinder body 21 is suddenly reduced at the positions of the first water permeable window 211 and the second water permeable window 212, and the flow rate of the irrigation water at this position is increased, thereby avoiding the impurities contained in the irrigation water from adhering and accumulating on the grating of the first water permeable window 211 / the grating of the second water permeable window 212, and avoiding the first water permeable window 211 and the second water permeable window 212 from being blocked.

[0041] With reference to Figure 6 , the inclination angle of the pipe body 1 and the core body 2 is not intentionally adjusted during laying, and the impurities contained in the irrigation water will naturally settle at the bottom of the inner cavity of the first cylinder body 21, so that in the extreme case that the first water permeable window 211 is located directly below / above the second water permeable window 212, one of the water permeable windows (the first water permeable window 211 / the second water permeable window 212) will be blocked, and the other water permeable window (the second water permeable window 212 / the first water permeable window 211) will not be blocked. Therefore, the double-window scheme provided by the utility model can ensure that at least one of the water permeable windows will not be blocked, thereby improving the functional reliability of irrigation.

[0042] With reference to Figure 3 and Figure 4, the flow channel assembly 213 includes a first flow channel 2131, a second flow channel 2132, a third flow channel 2133, a fourth flow channel 2134, a fifth flow channel 2135 and a sixth flow channel 2136. The first flow channel 2131, the second flow channel 2132, the third flow channel 2133, the fourth flow channel 2134, the fifth flow channel 2135 and the sixth flow channel 2136 are all in the form of grooves.

[0043] With reference to Figure 4 , the first flow channel 2131 is arranged in the form of a U-shaped groove on the outer periphery of the first water-permeable window 211, and the second flow channel 2132 is arranged in the form of a U-shaped groove on the outer periphery of the second water-permeable window 212, so that the first flow channel 2131 and the second flow channel 2132 have the maximum length; the first flow channel 2131 and the second flow channel 2132 are both in the form of a wavy groove, so that the first flow channel 2131 and the second flow channel 2132 have the maximum length and the maximum bending frequency. In this way, the flow resistance of the irrigation water is increased, the flow rate is reduced, and drip irrigation is achieved.

[0044] With reference to Figure 4 , the side wall of the second water-permeable window 212 is in communication with the starting end of the third flow channel 2133, and the side wall of the first water-permeable window 211 is in communication with the ending end of the third flow channel 2133; the side wall of the first water-permeable window 211 is in communication with the starting end of the first flow channel 2131, and the ending end of the first flow channel 2131 is in communication with the starting end of the fourth flow channel 2134; the ending end of the fourth flow channel 2134 is in communication with the starting end of the second flow channel 2132, the second flow channel 2132 is in communication with the fifth flow channel 2135, the fifth flow channel 2135 is in communication with the starting end of the sixth flow channel 2136, and the ending end of the sixth flow channel 2136 is in communication with the water-permeable gap 220.

[0045] With reference to Figure 4 , the end side wall of the first water-permeable window 211 is in communication with the third flow channel 2133, and the side side wall of the second water-permeable window 212 is in communication with the third flow channel 2133, so that the first water-permeable window 211, the second water-permeable window 212 and the third flow channel 2133 are in communication in the form of an n-shaped string, and therefore, when the lower part of the first water-permeable window 211 is blocked or any position of the second water-permeable window 212 is blocked, the (indirect) communication between the other water-permeable window and the water-permeable gap 220 will not be affected to avoid overall blockage, thereby having excellent functional reliability and risk resistance.

[0046] With reference to Figure 4 , the third flow channel 2133 and the fourth flow channel 2134 are arranged in the form of a two-character shape, and are arranged between the first water-permeable window 211 and the second water-permeable window 212. The third flow channel 2133 is located at the same end position of the first water-permeable window 211 and the second water-permeable window 212, so that the third flow channel 2133 has the shortest length, thereby reducing the risk of blockage of the third flow channel 2133. The third flow channel 2133 and the fourth flow channel 2134 are both located at the same end of the first water-permeable window 211, thereby improving the compactness of the structure of the utility model.

[0047] Referring to Figure 3 With Figure 5 , the outer surface of the second cylinder 22 is provided with a flow guide rib 222, which is arranged at the inlet position of the water permeable gap 220. The flow guide rib 222 and the check rib 221 are arranged alternately. The flow guide rib 222 is provided with a plurality of strips, and the length direction of the flow guide rib 222 is arranged along the width direction of the inlet of the water permeable gap 220, so as to guide the irrigation water from the inlet to the position of the check rib 221 and the position of the water permeable hole 11.

[0048] Referring to Figure 5 , a plurality of check ribs 221 are arranged in an accumulation state; a plurality of flow guide ribs 222 are arranged in an accumulation state. The flow guide ribs 222 are arranged directly in parallel with each other. The check ribs 221 on a single second cylinder 22 are accumulated in two groups, and at least one water permeable hole 11 is arranged at the position of each group of check ribs 221.

[0049] The water permeable hole 11 is arranged in the gap between adjacent check ribs 221, so as to avoid that the outer end surface of the check rib 221 blocks the water permeable hole 11, and ensure the smoothness of drainage.

[0050] The check rib 221 and the second cylinder 22 are fixedly connected in an integrated manner, and the flow guide rib 222 and the second cylinder 22 are fixedly connected in an integrated manner.

[0051] Referring to Figure 4 , a grid is arranged in the first water permeable window 211 and the second water permeable window 212 respectively; the grid is fixedly connected with the first cylinder 21 in an integrated manner or is clamped by a buckle. The grid is used to prevent impurities in the irrigation water in the second cylinder 22 from entering the flow channel assembly 213, so as to reduce the risk of blocking the flow channel assembly 213.

[0052] Referring to Figure 2 With Figure 3 , one second cylinder 22 is fixedly connected at each end of a single first cylinder 21, and each second cylinder 22 is independently provided with a water permeable gap 220, a check rib 221 and a flow guide rib 222. Referring to Figure 5 , the check ribs 221 and the flow guide ribs 222 on different second cylinders 22 are arranged in an axisymmetric manner.

[0053] Referring to Figure 4 With Figure 5 , the fifth flow channel 2135 is in communication with the middle part of the sixth flow channel 2136, and the two ends of the sixth flow channel 2136 are respectively in an open state and are used to communicate the inlets of two water permeable gaps 220, so as to realize the distribution.

[0054] Referring to Figure 5The edge position of the second cylinder 22 away from the first cylinder 21 is provided with a blocking rib 223, so as to avoid irrigation water flowing out from the position.

[0055] In use, the utility model is buried in the shallow soil, can avoid being irradiated by sunlight, then the water drop of drip irrigation directly infiltrates into the ground, reduces evaporation loss, improves the utilization rate of irrigation water, realizes water-saving irrigation.

[0056] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0057] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "setting", "mounting", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be direct connection, can also be connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0058] In summary, for those skilled in the art, according to the guidance of the utility model, the changes, modifications, replacements, deformations of the utility model made without departing from the principles and spirits of the utility model still fall within the protection scope of the utility model.

Claims

1. A small flow buried dripper, characterized by: It comprises a core body (2) and a tube body (1) arranged to cover the surface of the core body (2); The tube body (1) comprises a first cylinder (21) and a second cylinder (22) coaxially fixedly connected to the first cylinder (21); a first water-permeable window (211) and a second water-permeable window (212) are radially arranged in the middle of the side wall of the first cylinder (21); and a flow channel assembly (213) communicating with the first water-permeable window (211) and the second water-permeable window (212) is provided on the outer surface of the first cylinder (21); A water-permeable gap (220) is provided between the outer surface of the second cylinder (22) and the inner surface of the tube body (1); a check rib (221) is provided on the outer surface of the second cylinder (22) for supporting the water-permeable gap (220) and preventing sediment from flowing back; the water-permeable gap (220) is in communication with the flow channel assembly (213); A water-permeable hole (11) is provided on the side wall of the tube body (1), and the water-permeable hole (11) is located on the outer periphery of the second cylinder body (22).

2. The low-flow underground dripper according to claim 1, characterized in that: The non-return rib (221) is V-shaped and its opening faces away from the first cylinder (21).

3. The low-flow underground dripper according to claim 2, characterized in that: The first water-permeable window (211) and the second water-permeable window (212) are arranged along the diameter direction of the first cylinder (21).

4. The low-flow underground dripper according to claim 3, characterized in that: The inner end of the first water-permeable window (211) is in communication with the inner cavity of the first cylinder (21), and the outer end is in communication with the flow channel assembly (213); the inner end of the second water-permeable window (212) is in communication with the inner cavity of the first cylinder (21), and the outer end is in communication with the flow channel assembly (213).

5. The low-flow underground dripper according to claim 4, characterized in that: The first water-permeable window (211) and the second water-permeable window (212) both protrude inwards based on the inner wall of the first cylinder (21).

6. The low-flow underground dripper according to claim 5, characterized in that: The flow channel assembly (213) comprises a first flow channel (2131), a second flow channel (2132), a third flow channel (2133), a fourth flow channel (2134), a fifth flow channel (2135), and a sixth flow channel (2136); the first flow channel (2131) is arranged in a U-shape on the periphery of the first water-permeable window (211), and the second flow channel (2132) is arranged in a U-shape on the periphery of the second water-permeable window (212); The second water-permeable window (212) is connected to the starting end of the third flow channel (2133), and the end of the third flow channel (2133) is connected to the first water-permeable window (211); the first water-permeable window (211) is connected to the starting end of the first flow channel (2131), and the end of the first flow channel (2131) is connected to the starting end of the fourth flow channel (2134); the end of the fourth flow channel (2134) is connected to the starting end of the second flow channel (2132), the second flow channel (2132) is connected to the fifth flow channel (2135), the fifth flow channel (2135) is connected to the starting end of the sixth flow channel (2136), and the end of the sixth flow channel (2136) is connected to the water-permeable gap (220).

7. The low-flow underground dripper according to claim 6, characterized in that: The third flow channel (2133) and the fourth flow channel (2134) are arranged in a two-shaped configuration, and the third flow channel (2133) and the fourth flow channel (2134) are placed between the first water-permeable window (211) and the second water-permeable window (212).

8. The low-flow underground dripper according to claim 7, characterized in that: The outer surface of the second cylinder (22) is provided with a flow-guiding rib (222), and the flow-guiding rib (222) is placed at the inlet of the water-permeable gap (220).

9. The low-flow underground dripper according to claim 8, characterized in that: The flow-guiding ribs (222) and the non-return ribs (221) are arranged alternately.

10. The low-flow underground dripper according to any one of claims 1 to 9, characterized in that: Grilles are respectively provided in the first water-permeable window (211) and the second water-permeable window (212).

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