Patch type drip irrigation tape

Abstract

The utility model relates to a patch type drip irrigation tape which comprises a drip irrigation tape body and a plurality of patch drippers. And the patch drippers are fixed on the inner pipe wall of the drip irrigation tape body and are arranged at intervals along the axial direction. And a comb-shaped water inlet window, a labyrinth flow channel and a water collecting tank are formed on the patch water dropper. The outer end face of the comb-shaped water inlet window is distributed on an outwards-protruding arc face, and the arc face extends in the left-right direction. The filter performance of the comb-shaped water inlet window is improved, and the anti-blocking performance of the patch type drip irrigation tape can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to drip irrigation technology field, concretely relates to patch type drip irrigation belt. BACKGROUND

[0002] Drip irrigation is a kind of irrigation method that water and nutrients required by crops are dropped into the soil of crop root zone uniformly and slowly drop by drop through low-pressure pipeline system and irrigation emitter installed on the drip irrigation tape.To prevent frequent clogging at the emitter, drip irrigation tape has high requirements for water quality, which restricts its wide use.

[0003] In the prior art, patch emitter is usually configured on the drip irrigation tape to control water quantity.The main flow guide structure on the patch emitter includes comb water inlet window, labyrinth flow channel and water collecting tank in sequence, wherein the comb water inlet window plays a filtering role, can filter a large amount of solid impurities in water, especially relatively large impurities;The labyrinth flow channel can form vortex in the flow process due to disturbance, which can reduce water speed, slow down water pressure and prevent clogging caused by excessive concentration of impurities;The water collecting tank plays the role of uniform water distribution, buffer water flow pressure and sedimentation of impurities, which can prevent the water outlet hole opened on the drip irrigation tape body from being clogged to a certain extent. SUMMARY

[0004] The patch type drip irrigation tape provided by the utility model improves the local structure of the comb water inlet window, improves the filtering performance of the comb water inlet window and improves the anti-clogging performance of the patch type drip irrigation tape.

[0005] The technical scheme adopted by the utility model to solve the technical problem is: a patch type drip irrigation tape, including a drip irrigation tape body and a plurality of patch emitters.The patch emitters are fixed on the inner pipe wall of the drip irrigation tape body and are arranged alternately along the axial direction of the drip irrigation tape body.A comb water inlet window, a labyrinth flow channel and a water collecting tank are formed in sequence on the patch emitters.After the patch emitters are fixed on the drip irrigation tape body, a water outlet hole is provided on the drip irrigation tape body and matched with the water collecting tank one by one.

[0006] Further, the outer end surface of the grid on the comb water inlet window is distributed on the outer convex arc surface, and the arc surface extends in the left-right direction.

[0007] Optionally, a wedge surface is formed at the left and right ends of the arc surface.

[0008] Optionally, the included angle of the wedge surface formed relative to the horizontal direction is between 10 degrees and 35 degrees.

[0009] Optionally, a spacer ring set is formed at the central position of the water collecting tank.The spacer ring set at least includes an outer spacer ring surrounded by a plurality of outer ring pieces and an inner spacer ring surrounded by a plurality of inner ring pieces.

[0010] The inner ring piece corresponds to the inner side of the opposite ends of the two outer ring pieces, and the two ends of the inner ring piece extend in the circumferential direction relative to the end portions of the two outer ring pieces.

[0011] Optionally, the at least one outer ring piece corresponds to the water inlet of the communicating labyrinth flow channel and the water collecting tank.

[0012] Optionally, a slope is formed on each of the two end sides of the outer wall surface of the outer ring piece, and the slope can thin the end portion of the outer ring piece relative to the body.

[0013] Optionally, the height of the inner ring piece is lower than the height of the outer ring piece.

[0014] The utility model has the advantages that the utility model improves the local structure of the comb-shaped water inlet window, improves the filtering performance of the comb-shaped water inlet window, reduces the amount of impurities entering the water collecting tank through the comb-shaped water inlet window, and improves the anti-blocking performance of the patch type drip irrigation belt. In addition, by improving the protruding structure in the water collecting tank, the speed of the impurities deposited in the water collecting tank being discharged from the water outlet hole is slowed down, the impurities are effectively prevented from being discharged from the water outlet hole, and the situation of excessive blocking of the water outlet hole is inhibited. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a top view structural schematic diagram of the patch dripper.

[0016] Figure 2 It is a top view structural schematic diagram of the patch dripper. Figure 1 It is a sectional view structural schematic diagram of A-A.

[0017] Figure 3 It is a structural schematic diagram when the patch dripper is connected with the drip irrigation belt as a whole.

[0018] Figure 4 It is a sectional view structural schematic diagram of B. Figure 3 It is a local enlarged structural schematic diagram of B.

[0019] In the drawing: 10 is a drip irrigation belt body, 11 is an inner pipe wall, 111 is a water outlet hole; 20 is a patch dripper, 201 is a water-facing surface, 202 is a backwater surface, 21 is a comb-shaped water inlet window, 211 is an arc surface, 212 is a wedge surface, 22 is a labyrinth flow channel, 23 is a water collecting tank, 24 is a water inlet, 25 is a separation ring group, 251 is an outer ring piece, 2511 is a first free end, 2512 is a slope, 252 is an inner ring piece, 2521 is a second free end. DETAILED DESCRIPTION

[0020] The structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not have technical substantial meaning, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope covered by the technical content disclosed by the utility model. Meanwhile, the terms such as "upper", "lower", "front", "rear", "intermediate" and the like cited in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the scope of the utility model.

[0021] As shown in Figures 1 to 4 A patch type drip irrigation tape, comprising a drip irrigation tape body 10 and a plurality of patch drippers 20. The patch drippers 20 are fixed on the inner pipe wall 11 of the drip irrigation tape body 10 and are arranged alternately along the axial direction of the drip irrigation tape body 10. A comb-shaped water inlet window 21, a labyrinth flow channel 22 and a water collecting groove 23 are formed in sequence on the patch dripper 20. After the patch dripper 20 is fixed on the drip irrigation tape body 10, a water outlet hole 111 is arranged on the pipe wall of the drip irrigation tape body and matches the water collecting groove 23 one by one.

[0022] The drip irrigation tape body 10 can be selected as a PE hose, and the patch dripper 20 is fixed on the inner wall (i.e. the inner pipe wall 11) of the PE hose by hot embedding. Generally, the backwater surface 201 of the patch dripper 20 is in contact with and hot-embedded with the inner pipe wall 11 of the drip irrigation tape body 10. The water-facing surface 202 of the patch dripper 20 faces the lumen of the drip irrigation tape body 10. The comb-shaped water inlet window 21 is close to the water-facing surface 202 side and can communicate the water inlet port of the labyrinth flow channel 22 with the lumen of the drip irrigation tape body 10, so as to make the water flow into the flow channel of the patch dripper 20 and gather in the water collecting groove 23.

[0023] After the patch dripper 20 is fixed on the drip irrigation tape body 10, the water flow is transported and flows in the left-right direction (i.e. along the axial direction of the drip irrigation tape body 10).

[0024] In the technical scheme of the utility model, the outer end surface (i.e. the water-facing surface 202 side) of the grid-shaped water inlet window 21 is distributed on the outward convex arc surface 211, that is, the outer end surface of the comb-shaped water inlet window 21 is distributed on the outward convex arc surface 211. The arc surface 211 extends in the left-right direction.

[0025] Because the outer end surface of the comb-shaped water inlet window 21 (i.e. the end surface on the same side as the water-facing surface 202) is formed as an outwardly convex arc surface 211, the outer end surface of the comb-shaped water inlet window 21 is relatively smooth when in contact with the water flow, and the water body is subjected to significantly reduced flow resistance when passing through the grid holes on the comb-shaped water inlet window 21, thereby facilitating smooth water flow. Similarly, when impurities suspended in the water body come into contact with the outer end surface of the comb-shaped water inlet window 21, the impurities are subjected to reduced resistance, facilitating smooth sliding of the impurities through the grid holes without being easily diverted by a large amount of flow resistance to enter the comb-shaped water inlet window 21 and flow into the labyrinth flow passage 22. Therefore, by optimizing the end surface structure of the comb-shaped water inlet window 21, the amount of impurities entering the labyrinth flow passage 22 can be relatively reduced, i.e. the amount of impurities entering the water collection tank 23 is reduced, thereby helping to improve the anti-clogging performance of the drip irrigation tape.

[0026] A wedge surface 212 is formed at the left and right ends of the arc surface 211. Because the water flow is transported in the left-right direction (i.e. in the axial direction of the drip irrigation tape body 10), the wedge surface 212 does not significantly hinder the smooth flow of the water flow, but also has a good flow guiding effect, which can inhibit impurities suspended in the water body from entering the comb-shaped water inlet window 21 at the two end sides of the arc surface 211, thereby further reducing the amount of impurities entering the water collection tank 23, further reducing the amount of impurities collected in the water collection tank 23 per unit time, and further improving the performance of preventing the water outlet holes 111 from being clogged.

[0027] As shown in Figures 1 to 4 A partition ring set 25 is formed at the central position of the water collection tank 23. The partition ring set 25 at least includes an outer partition ring surrounded by a plurality of outer ring pieces 251 and an inner partition ring surrounded by a plurality of inner ring pieces 252. A large radial spacing is formed between the outer partition ring and the inner partition ring, which is generally controlled to be more than 3 mm.

[0028] After the patch dripper 20 is fixed with the drip irrigation tape body 10, the water outlet holes 111 correspond to the central area of the inner partition ring. It is preferred that at least one outer ring piece 251 corresponds to the water inlet 24 that communicates the labyrinth flow passage 22 and the water collection tank 23, so as to block the water flow from directly impacting the inner ring piece 252, thereby better delaying the speed of impurities deposited in the water collection tank 23 from entering the inner partition ring, facilitating relatively more dispersed entry of the impurities into the inner partition ring, and being discharged to the outside of the drip irrigation tape.

[0029] The inner ring sheet 252 corresponds to the inner side of the opposite ends of the two adjacent outer ring sheets 251, and the two ends of the inner ring sheet 252 are both extended in the circumferential direction relative to the end portions of the two outer ring sheets 251, so that the inner ring sheet 252 blocks the spacing between the two adjacent outer ring sheets 251, delays the speed of impurities gathering into the inner isolation ring and the total amount of impurities gathered in unit time, and effectively prevents the water outlet hole 111 from being blocked.

[0030] The outer ring sheet 251 and the inner ring sheet 252 are both arc-shaped fins, so that the plurality of outer ring sheets 251 are substantially located on one circular ring body, and the plurality of inner ring sheets 252 are substantially located on one circular ring body.

[0031] A slope 2512 is formed at both end sides of the outer wall surface of the outer ring sheet 251, and the slope 2512 can thin the end portion of the outer ring sheet 251 relative to the body of the outer ring sheet 251. By providing the slope 2512, impurities gathered around the end portion of the outer ring sheet 251 can flow in the direction away from the outer ring sheet 251 with the water body, increasing the difficulty of impurities entering the inner side of the inner ring sheet 252.

[0032] The height of the inner ring sheet 252 is lower than the height of the outer ring sheet 251, and the height can be understood as the size in the depth direction of the water collecting groove 23. That is, as shown in Figure 4 The free end surface of the outer ring sheet 251, i.e. the first free end 2511, is in contact with the inner pipe wall 11, and the free end surface of the inner ring sheet 252, i.e. the second free end 2521, is spaced apart from the inner pipe wall 11 in the radial direction of the drip irrigation tape body 10. Such a design can flow the water body between the inner and outer isolation rings from the upper portion into the inner isolation ring, which helps to ensure that there is sufficient water supply to the water outlet hole 111 in the inner isolation ring.

[0033] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. The present application can be improved in many aspects without deviating from the general idea, and those skilled in the art can modify or change the above embodiments without deviating from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without deviating from the spirit and technical idea disclosed by the present application should be covered by the claims of the present application.

Claims

1. A patch-type drip irrigation tape, comprising a drip irrigation tape body (10) and a plurality of patch drippers (20); the patch drippers (20) are fixed on the inner tube wall (11) of the drip irrigation tape body (10) and arranged alternately along the axial direction; a comb-shaped water inlet window (21), a labyrinth flow channel (22), and a water collection groove (23) are formed on the patch drippers (20); characterized in that: The outer end face of the comb-shaped water inlet window (21) is distributed on the convex arc surface (211) and the arc surface (211) extends in the left and right directions.

2. The patch-type drip irrigation tape according to claim 1, characterized in that: Wedge surfaces (212) are formed at the left and right ends of the arc surface (211).

3. The patch-type drip irrigation tape according to claim 2, characterized in that: The angle formed by the wedge (212) tilting relative to the horizontal direction is between 10 degrees and 35 degrees.

4. The patch-type drip irrigation tape according to claim 1, characterized in that: An isolation ring group (25) is formed at the center of the water collection tank (23); the isolation ring group (25) includes at least an outer isolation ring surrounded by a plurality of outer ring pieces (251) and an inner isolation ring surrounded by a plurality of inner ring pieces (252), and a radial spacing is formed between the two isolation rings; The inner ring (252) is located at the opposite ends of the two adjacent outer rings (251) and both ends have an extension length in the circumferential direction relative to the ends of the two outer rings (251).

5. The patch-type drip irrigation tape according to claim 4, characterized in that: At least one outer ring piece (251) is positioned at the inlet (24) of the connecting labyrinth channel (22) and the water collection tank (23).

6. The patch-type drip irrigation tape according to claim 4, characterized in that: Inclined surfaces (2512) are formed on both ends of the outer wall surface of the outer ring piece (251), and the inclined surfaces (2512) can make the ends of the outer ring piece (251) relatively thinner.

7. The patch-type drip irrigation tape according to claim 4, characterized in that: The height of the inner ring plate (252) is lower than the height of the outer ring plate (251).

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