CN104303957B - Microporous labyrinth type anti-blocking drip irrigation pipe - Google Patents

Abstract

The invention provides a microporous labyrinth anti-blocking drip irrigation pipe, which is composed of a drip irrigation pipe and an embedded dripper. The dripper is cylindrical, with water outlet slits arranged on both sides or in the middle of the cylinder, and made of fiber material or open foaming microporous material outside the cylinder. The microporous labyrinth prevents blocking of the water seepage layer. The drippers are set at intervals greater than 30cm in the drip irrigation pipe. The drip irrigation pipe wall corresponds to the position of the dripper outlet slit and is staggered and uniformly distributed along the circumference. The technological progress effect of the present invention is that the anti-blocking performance is greatly improved, the filter equipment of the drip irrigation system can be simplified, and the energy consumption of the drip irrigation system can be reduced. The shape of the dripper labyrinth is cylindrical, and it can be directly embedded in the dripper during production, which greatly reduces the cost of the dripper production process, and the hardware of the drip irrigation tube production line does not need to be changed in any way.

Description

A microporous labyrinth anti-blocking drip irrigation pipe

technical field

The invention relates to a microporous labyrinth anti-clogging drip irrigation pipe, in particular to a drip irrigation pipe suitable for underground application of field crops, and belongs to the technical field of water-saving irrigation agricultural equipment.

Background technique

Various embedded drip irrigation pipes currently used in the field of agricultural micro-irrigation technology are equipped with a set of labyrinths on each dripper to damp and reduce the pressure inside the drip irrigation pipe, and to balance the water outlet pressure and water output of each drip outlet. , so as to ensure that the water output of each drip outlet of the drip irrigation pipe is basically the same within a certain laying length. The production method is generally to engrave various labyrinth grooves or inlaid labyrinth patches on the outer cylindrical surface of the dripper, and then the dripper is embedded in the drip irrigation pipe during the extrusion and stretching process of the drip irrigation pipe.

When the drip irrigation pipe is laid on the ground, the evaporation loss of irrigation water is large, which affects farming, needs to be recycled every year, and the drip irrigation pipe is easily aged by the sun. Therefore, modern agriculture vigorously promotes buried drip irrigation technology, which is to bury drip irrigation pipes underground. However, when the existing drip irrigation pipes and drip irrigation belts are buried in the ground, the water tendency of the crop root system will cause the fibrous roots to stick into the drip outlet of the drip irrigation pipe; Outlet recharging, block the water outlet or the labyrinth close to the outlet. Since the length of the labyrinth is generally 80 to 400 mm, the water pressure reduction effect of the labyrinth pin has made the end water pressure tend to zero. When watering again, the water pressure at the end of the maze cannot flush the blocked part, causing the drip irrigation system to be scrapped due to blockage. The defects in the existing drip irrigation pipes/belts have become a bottleneck hindering the development of buried drip irrigation technology.

Contents of the invention

The object of the present invention is to provide a microporous labyrinth anti-blocking drip irrigation pipe with simple structure and low manufacturing cost, so as to solve the problem that the buried drip irrigation pipe blocks the water outlet.

The technical solution of the present invention is realized as follows: the microporous labyrinth anti-blocking drip irrigation pipe is composed of a drip irrigation pipe and an embedded dripper. The microporous labyrinth anti-blocking water seepage layer made of material or open foaming microporous material, the drippers are set in the drip irrigation pipe at an interval greater than 30cm, and the drip irrigation pipe wall corresponds to the position of the dripper water outlet slits, and the water outlet holes are evenly distributed along the circumference.

In the microporous labyrinth anti-clogging drip irrigation pipe, stoppers are provided at both ends of the dripper to fix the anti-clogging water seepage layer material.

In the microporous labyrinth anti-blocking drip irrigation pipe, ring grooves and elastic snap rings are arranged at both ends of the dripper to fix the anti-blocking water seepage layer material.

In the microporous labyrinth anti-blocking drip irrigation pipe, one end of the dripper is provided with a spigot, and the other end is provided with a ring groove and an elastic snap ring to fix the anti-blocking water seepage layer material.

For the microporous labyrinth anti-blocking drip irrigation pipe, the material of the anti-blocking water seepage layer is a braided sleeve or an open braided sleeve of acrylic, ethylene, or polypropylene fibers.

For the microporous labyrinth anti-blocking drip irrigation pipe, the anti-blocking water seepage layer material is polyurethane open foam material.

In the microporous labyrinth anti-blocking drip irrigation pipe, the water outlet gap of the dripper is arranged parallel to the center line on the cylindrical surface of the dripper.

The technical progress effect of the microporous labyrinth anti-blocking drip irrigation pipe of the present invention is:

1. The anti-blocking performance is greatly improved. Because the microporous maze composed of fiber materials has extremely small water seepage gaps, which can reach the micron level, crop fibrous roots cannot penetrate into the microporous maze to cause blockage. It can simplify the filter equipment of the drip irrigation system and reduce the energy consumption of the drip irrigation system.

2. The shape of the dripper labyrinth is cylindrical, and it can be directly set on the dripper during production, which greatly reduces the cost of the dripper production process, and the hardware of the drip irrigation pipe production line does not need to be changed in any way.

3. Intermittent irrigation, when the muddy water refills under the action of negative pressure to block the outlet, the microporous labyrinth flow formed by the fiber gap is only a few millimeters. The formed capillary water seepage dual function will also flush out the blocked part.

Description of drawings

Figure 1: Partial cross-sectional view of the drip irrigation pipe with drippers embedded in the cylinder (water outlet on both sides)

Figure 2: Partial cross-sectional view of the drip irrigation pipe with drippers embedded in the cylinder (water outlet in the middle)

Figure 3: Section A-A of Figure 1

Figure 4: Sectional view of dripper with ring groove inside cylinder

Figure 5: Partial cross-sectional view of the drip irrigation pipe of the cylindrical inner ring groove dripper

Figure 6: Sectional view of cylindrical spigot and inner ring groove dripper

Figure 7: Partial sectional view of elastic snap ring

In the figure: 1, drip irrigation pipe outlet hole 2, anti-blocking seepage layer 3, water outlet slit 4, dripper 4-1, stop 4-2, ring groove 4-3, elastic snap ring 5, drip irrigation pipe 6, overpass water channel

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The technical key of the microporous labyrinth anti-blocking drip irrigation pipe of the present invention is that the microporous fiber or foam material is used as the filling material for the microporous labyrinth flow channel on the dripper, and the water outlet slit of the dripper is interlaced with the water outlet hole of the drip irrigation pipe. Setting, with the help of the capillary action of the fiber material, the irrigation water will seep out from the dripper slit through the fiber material of the drip irrigation pipe.

As shown in Figure 1: the microporous labyrinth anti-blocking drip irrigation pipe of the present invention is composed of a drip irrigation pipe 5 and an embedded dripper 4, the dripper is cylindrical, and the hollow part is a water passage 6, and the circumference on both sides of the dripper cylinder Set the water outlet slit 3, the microporous labyrinth anti-blocking water seepage layer 2 made of fiber material or open foam microporous material outside the cylinder, the interval between the drippers in the drip irrigation pipe is determined by the amount of dripping water, generally greater than or equal to 30cm, the wall of the drip irrigation pipe A water outlet hole 1 is provided in the middle of the position corresponding to the water outlet slit of the dripper.

Figure 2 shows another technical solution of the present invention, in which a water outlet slit 3 is provided on the middle circumference of the dripper cylinder, and water outlet holes 1 are provided on both sides of the drip irrigation pipe wall corresponding to the position of the dripper outlet slit.

Wherein the water outlet slit 3 of the dripper is arranged parallel to the midline along the axial cylindrical surface of the dripper, as shown in FIG. 4 .

The material of the microporous labyrinth anti-blocking water seepage layer is selected from braided sleeves or open braided sleeves (available on the market) of acrylic, ethylene fiber, polypropylene fibers, and the described anti-blockage water seepage layer material is polyurethane open foam material ( market available). The braided sleeve can be cut into a cylinder and put on the cylindrical surface of the dripper. The open braided sleeve is cut into sections or the microporous sleeve is cut into rectangular pieces and wound on the cylindrical surface of the dripper. Among Fig. 1, the present invention is provided with notch 4-1 at the dripper two ends to fix anti-blocking water seepage layer material.

The working principle is: the pressurized irrigation water enters the middle part of the labyrinth of the microporous labyrinth anti-blocking water seepage layer 2 from the water outlet slit 3 of the dripper. When the pressure tends to be consistent, it will drip out of the pipe through each group of 1 to 3 water outlet holes 1 uniformly distributed along the circumference.

Figure 4 and Figure 5 show another extended technical solution of the dripper 4 of the present invention. Ring grooves 4-2 and elastic snap rings 4-3 are arranged at both ends of the dripper to fix the anti-blocking water seepage layer material.

The third technical solution for the extension of the dripper 4 of the present invention shown in Figure 6 is that a stopper 4-1 is provided at one end of the dripper, and a ring groove 4-2 and an elastic snap ring 4-3 are provided at the other end to fix the anti-blocking water seepage layer material .

Claims (4)

1. A microporous labyrinth anti-blocking drip irrigation pipe, which is composed of a drip irrigation pipe (5) and an embedded dripper (4), characterized in that: the dripper is cylindrical, and the water outlet slits (3) are set on both sides or in the middle of the cylinder , a microporous labyrinth anti-blocking water seepage layer (2) made of fiber material or open foam microporous material outside the cylinder, the drippers are set in the drip irrigation pipe at an interval greater than 30cm, and the positions of the dripper outlet slits on the drip irrigation pipe wall are staggered along the circumference. The cloth has water outlet holes (1); Stoppers (4-1) are provided at both ends of the dripper to fix the anti-blocking water seepage layer material; Or ring grooves (4-2) and elastic snap rings (4-3) are arranged at both ends of the dripper to fix the anti-blocking water seepage layer material; Or one end of the dripper is provided with a stop (4-1), and the other end is provided with a ring groove (4-2) and an elastic snap ring (4-3) to fix the anti-blocking water seepage layer material. 2. The microporous labyrinth anti-blocking drip irrigation pipe according to claim 1, characterized in that: the anti-blocking water seepage layer material is a braided sleeve of acrylic, ethylene, or polypropylene fiber or an open braided sleeve. 3. The microporous labyrinth anti-blocking drip irrigation pipe according to claim 1, characterized in that: the anti-blocking water seepage layer material is polyurethane open foam material. 4. The microporous labyrinth anti-blocking drip irrigation pipe according to claim 1, characterized in that: the water outlet slit of the dripper is arranged parallel to the centerline on the axial cylindrical surface of the dripper.