WO2023237132A1 - 一种双色成型抗堵塞圆柱滴头 - Google Patents

一种双色成型抗堵塞圆柱滴头 Download PDF

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Publication number
WO2023237132A1
WO2023237132A1 PCT/CN2023/110559 CN2023110559W WO2023237132A1 WO 2023237132 A1 WO2023237132 A1 WO 2023237132A1 CN 2023110559 W CN2023110559 W CN 2023110559W WO 2023237132 A1 WO2023237132 A1 WO 2023237132A1
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WIPO (PCT)
Prior art keywords
water outlet
baffle
area
water
dripper
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Application number
PCT/CN2023/110559
Other languages
English (en)
French (fr)
Inventor
张亮
李传胜
谷体晓
马雪梅
皮特
马杰
Original Assignee
莱芜春雨节水器材有限公司
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Application filed by 莱芜春雨节水器材有限公司 filed Critical 莱芜春雨节水器材有限公司
Publication of WO2023237132A1 publication Critical patent/WO2023237132A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/04—Combinations of filters with settling tanks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion

Definitions

  • the invention relates to the technical field of water-saving irrigation, and in particular to a two-color molded anti-clogging cylindrical dripper.
  • Drip irrigation is an advanced irrigation technology in water-saving irrigation. It has attracted more and more attention from all over the world.
  • the so-called drip irrigation is based on the water requirements of crops. Through the pipeline system and the dripper installed on the capillary pipe, water and the moisture needed by the crop are transferred.
  • An irrigation method in which nutrients are dripped drop by drop, evenly and slowly into the soil in the root zone of crops. Drip irrigation does not destroy the soil structure.
  • the water, fertilizer, air and heat inside the soil are always in good conditions suitable for crop growth.
  • the evaporation loss is small, no surface runoff is generated, and there is almost no deep leakage. It is a water-saving irrigation method.
  • Underground drippers have higher water utilization efficiency.
  • the disadvantage of the underground dripper is that the dripper is easily clogged, which may cause the entire system to fail to work properly or even be scrapped in severe cases.
  • the cause of the clog may be physical, biological or chemical factors: such as sediment in the water, Organic matter or microorganisms and chemical sediments, etc.; on the one hand, these clogging factors come from the irrigation water source, that is, clogging occurs in the direction of irrigation; on the other hand, when irrigation stops, the water in the soil will flow from the drip irrigation The mouth pours back into the dripper, causing blockage.
  • the present invention provides a two-color molded anti-clogging cylindrical dripper, which reduces the clogging of the dripper flow channel by impurities from the water source, and at the same time reduces the impact of sediment on the dripper flow channel when water in the soil is back-irrigated. Clogging, and the sedimentation tank set up is more tolerant of sediment, which improves the anti-clogging performance of the dripper, thereby extending the service life of the dripper.
  • a two-color molded anti-clogging cylindrical dripper includes a dripper body, and also includes a water inlet area, a water outlet area and a filtering area integrated on the dripper body; the water inlet area passes through The filter area is connected with the water outlet area.
  • the outer wall of the dripper body and the inner wall of the water pipe form a closed flow channel.
  • the water inlet area is the area where the water source enters the dropper to dissipate energy and stabilize pressure.
  • the water outlet area is the area where the stabilized water source flows out of the dripper. Filter The area is set between the water inlet area and the water outlet area.
  • the filter area can filter impurities from the water inlet area to prevent impurities from clogging the drip irrigation port; on the other hand, it can filter impurities from the water outlet area to prevent impurities from clogging the flow channel of the water inlet area and shortening the dripper. service life.
  • the filtration area includes a first-level filtration area; the first-level filtration area includes a first-level sedimentation tank, a first-level filter grid and a second-level filter grid; the first-level sedimentation tank is connected to the water inlet area, and the first-level sedimentation tank
  • the two sides of the pool along the length direction of the dripper body are respectively provided with a first-level filter grid and a second-level filter grid.
  • a first-level sedimentation tank is set up in the first-level filtration area, which can accommodate impurities and avoid direct blockage due to impurities flowing into the water inlet area. Some impurities may also be washed away after being washed continuously for a long time. were flushed out of the dripper; a first-level filter grid and a second-level filter grid were set up on both sides of the first-level sedimentation tank, realizing the diversion of the water source and increasing the number of grids. After the grid is clogged, it will not affect the water output of the dripper, extending the service life of the dripper.
  • the filtration area also includes a secondary filtration area;
  • the secondary filtration area includes a first secondary sedimentation tank, a second secondary sedimentation tank, a first secondary filter grid and a second secondary filter grid;
  • the first-level sedimentation tank is connected to the first-level sedimentation tank through the first-level filter grid, and the first- and second-level filter grids are set on the side of the first-level sedimentation tank away from the first-level filter grid;
  • the second-level sedimentation tank The tank is connected to the first-level sedimentation tank through a second-level filter grid, and the second-level filter grid is arranged on the side of the second-level sedimentation tank away from the second-level filter grid.
  • a secondary filtration area is set up, which improves the filtration performance of the filtration area, and adds a first- and second-level sedimentation tank and a second-level sedimentation tank, which can accommodate more impurities and increase the tolerance of impurities. properties to extend the service life of the dripper.
  • the grid width of the first-level filtering grid and the second-level filtering grid is greater than the grid width of the first-level filtering grid and the second-level filtering grid.
  • the impurities can be divided into the first-level sedimentation tank, the first-secondary sedimentation tank and the second-level sedimentation tank according to their size. Large-volume impurities are deposited in the first-level sedimentation tank, and small-volume impurities are deposited in the first-level sedimentation tank. In the first and second stage sedimentation tanks, the dispersed deposition of impurities is achieved, which improves the anti-clogging performance of the dripper.
  • the first level filtering grid and the second level filtering grid have no less than 2 cells.
  • the first and second level filtering grids and the second and second level filtering grids have no less than 5 cells.
  • the number of grids provided is sufficient, which avoids the phenomenon of grids being blocked and extends the service life of the dripper.
  • the water inlet area includes a water inlet connected to the inner cavity of the dripper body, and the other end of the water inlet is connected to a hard labyrinth flow channel; a water inlet filter grid is provided at the water inlet; the hard labyrinth flow channel is arranged around the water inlet, The hard labyrinth flow channel is surrounded by an external toothed baffle and an internal toothed baffle.
  • the external toothed baffle and the internal toothed baffle are arranged relative to each other according to the meshing position, and the external toothed baffle and the internal toothed baffle are There is a distance between the opposite directions to form a continuous zigzag flow channel.
  • the upper surfaces of the outer toothed baffle and the inner toothed baffle along the radial direction match the inner wall of the water pipe; the outer toothed baffle and the inner toothed baffle match
  • the linear shape of the plate in plan view is at least one of a straight line or a curve.
  • a water inlet filter grid is provided at the water inlet to achieve the first step of filtration of the water source, preventing impurities from flowing into the water inlet area and blocking the flow channel.
  • the setting of the hard labyrinth flow channel on the one hand, achieves It dissipates energy from the water source to ensure constant pressure.
  • the zigzag flow channel creates a water velocity difference, which is conducive to flushing impurities entering the hard labyrinth flow channel and preventing clogging.
  • the water inlet area also includes an elastic labyrinth flow channel connected to the water outlet end of the hard labyrinth flow channel;
  • the elastic labyrinth flow channel includes an elastic diaphragm, a first elastic tooth chain and a second elastic tooth chain;
  • the elastic diaphragm is arranged on On the outer wall of the dripper body, the dripper body below the elastic diaphragm is provided with a water pressure window that communicates with the inner cavity of the dripper body.
  • the first elastic tooth chain and the second elastic tooth chain are located directly above the elastic diaphragm.
  • the tooth chain and the second elastic tooth chain are arranged relatively according to the meshing position, and there is a distance between the opposite directions of the first elastic tooth chain and the second elastic tooth chain to form a continuous zigzag flow channel.
  • the first elastic tooth chain and The radial lower surface of the second elastic tooth chain and the elastic diaphragm form a pressure regulating flow channel; the elastic labyrinth flow channel is injection molded in one step and integrated into the dripper body.
  • an elastic labyrinth channel is set behind the hard labyrinth channel.
  • the cross-sectional area of the pressure-regulating channel can be adjusted according to the water pressure from the water pipe.
  • the water source acts on the elastic diaphragm through the water pressure window.
  • the elastic diaphragm is deformed in the direction of the first elastic tooth chain and the second elastic tooth chain, resulting in a smaller flow area of the pressure regulating flow channel.
  • the pressure regulating flow channel is The flow area becomes larger, thereby realizing that the water flow rate coming out of the elastic labyrinth flow channel is constant, which plays the role of regulating and maintaining a constant dripper flow rate;
  • the impurities when impurities enter the elastic labyrinth flow channel, the impurities cause the pressure regulation
  • the flow area of the flow channel becomes smaller and the water pressure increases, forcing the elastic diaphragm to deform, thereby allowing impurities to pass through the elastic labyrinth flow channel, which plays a self-flushing role.
  • the material of the elastic labyrinth flow channel is thermoplastic elastomer.
  • the elastic labyrinth flow channel uses a fully recyclable thermoplastic elastomer to replace the silicone pressure compensation piece of the traditional dripper, which is easy to recycle, saves energy and is beneficial to environmental protection.
  • the radial lower surfaces of the first elastic tooth chain and the second elastic tooth chain are inclined surfaces or curved surfaces, so that the cross section constituting the pressure regulating flow channel is a polygon.
  • the cross-section circumference of the pressure regulating flow channel is enlarged and the turning points on each side are smoother, which prevents impurities from depositing in the pressure regulating flow channel and prevents clogging.
  • the water outlet area includes a first water outlet curve and a first water outlet ring; the first water outlet curve is located on the outer side of the water inlet area in the circumferential direction and is connected to the filtering area; the first water outlet curve is composed of a plurality of baffles and is located at Surrounded by first circumferential baffles and second circumferential baffles near both ends of the dripper body, a plurality of baffles are staggered along the outer wall of the dripper body to form a continuous curve, and the first circumferential baffle is provided with The first water outlet; the first water outlet loop is surrounded by the first peripheral baffle and the first circumferential baffle located at the first end of the dripper body; the first water outlet loop and the first water outlet curve pass through the first water outlet Connected; baffle 1, the first circumferential baffle and the radial upper surface of the first peripheral baffle are adapted to the inner wall of the water pipe.
  • the setting of the first water outlet curve increases the length of the water outlet channel, achieving the effect of preventing impurities from entering.
  • the setting of the baffle also has the function of accommodating impurities, and also supports the pipe wall, improving This improves the pipe's ability to withstand pressure and deformation when buried underground; in addition, when the dripper is installed on the inner wall of the water pipe, a drip irrigation port must be set at the position corresponding to the first water outlet ring on the water pipe, and the first water outlet ring is set to surround The entire perimeter of the dripper body reduces the difficulty of opening a drip irrigation port on the water pipe wall.
  • the water outlet area further includes a second water outlet curve; the second water outlet curve is located on the other outer side of the water inlet area in the circumferential direction and is connected to the filter area; the second water outlet curve is composed of a plurality of baffles and is located near Surrounded by first circumferential baffles and second circumferential baffles at both ends of the dripper body, a plurality of baffles are staggered along the outer wall of the dripper body to form a continuous curve, and a third circumferential baffle is provided on the first circumferential baffle.
  • Three water outlets; the first water outlet ring and the second water outlet curve are connected through the third water outlet; the radial upper surfaces of the second baffle and the second circumferential baffle are adapted to the inner wall of the water pipe.
  • the second water outlet curve provided on the other outer side of the circumferential direction of the water inlet area has Equipped with the same function as the first water outlet curve, it improves the anti-clogging and pressure-resistant performance of the entire dripper, and makes the balance of the dripper better.
  • the water outlet area also includes a second water outlet ring; the second water outlet ring is surrounded by a second peripheral baffle and a second circumferential baffle located at the second end of the dripper body; the second circumferential baffle is provided with The second water outlet, the second water outlet ring and the first water outlet curve are connected through the second water outlet; a fourth water outlet is provided on the second circumferential baffle, and the second water outlet ring and the second water outlet curve are connected through the second water outlet.
  • the four water outlets are connected; the radial upper surface of the second peripheral baffle is adapted to the inner wall of the water pipe.
  • a second water outlet loop is added, and the number and location of the drip irrigation ports can be selectively opened. It can be opened on both water outlet loops, or one can be opened selectively.
  • the present invention has the following beneficial technical effects:
  • the function of accommodating impurities is achieved, and direct blockage caused by impurities flowing into the water inlet area is avoided.
  • Some impurities may be crushed and flushed out of the dripper after continuous flushing for a long time, thus realizing
  • the impurities are divided into the first-level sedimentation tank, the first-secondary sedimentation tank and the second-level sedimentation tank according to their size. Large-volume impurities are deposited in the first-level sedimentation tank, while small-volume impurities are deposited in the first- and second-level sedimentation tanks.
  • the dispersed deposition of impurities is achieved, which increases the tolerance of impurities, improves the anti-clogging performance of the dripper, and thereby extends the service life of the dripper.
  • the water inlet is equipped with a water filter grid to achieve the first step of filtration of the water source, preventing impurities from flowing into the water inlet area and blocking the flow channel.
  • the setting of the hard labyrinth flow channel can achieve the elimination of the water source on the one hand. It can ensure constant pressure, and at the same time, the zigzag flow channel creates a water velocity difference, which is conducive to flushing out impurities entering the hard labyrinth flow channel and preventing clogging.
  • the cross-sectional area of the pressure-regulating channel can be adjusted according to the water pressure from the water pipe.
  • the water source acts on the elastic diaphragm through the water pressure window.
  • the water pressure When the water pressure is large, the elastic diaphragm is deformed in the direction of the first elastic tooth chain and the second elastic tooth chain, causing the flow area of the pressure regulating flow channel to become smaller.
  • the water pressure when the water pressure is small, the flow area of the pressure regulating flow channel becomes larger. , thereby realizing that the water flow rate coming out of the elastic labyrinth flow channel is constant; it plays the role of regulating and maintaining a constant dripper flow rate.
  • the impurities when impurities enter the elastic labyrinth flow channel, the impurities cause the pressure-regulating flow channel to flow The area becomes smaller and the water pressure becomes larger, forcing the elastic diaphragm to deform, thereby allowing impurities to pass through the elastic labyrinth flow channel, which acts as a self-flushing function.
  • Figure 1 is a three-dimensional view of a two-color molded anti-clogging cylindrical dripper
  • Figure 2 is a front view of a two-color molded anti-clogging cylindrical dripper
  • Figure 3 is a cross-sectional view along line A-A of Figure 2;
  • Figure 4 is a top view of a two-color molded anti-clogging cylindrical dripper
  • Figure 5 is a bottom view of a two-color molded anti-clogging cylindrical dripper
  • Figure 6 is a front view of a two-color molded anti-clogging cylindrical dripper in Embodiment 2;
  • Figure 7 is a schematic diagram of the elastic labyrinth flow channel
  • Figure 8 is a B-direction view of the elastic labyrinth flow channel in Figure 7 .
  • 23-Elastic labyrinth flow channel 231-Elastic diaphragm; 232-First elastic tooth chain; 233-Second elastic tooth chain; 234-Pressure regulating flow channel;
  • 3-water outlet area 31-first water outlet curve; 311-baffle one; 312-first circumferential baffle; 313-second circumferential baffle; 314-first water outlet; 315-second water outlet ;
  • This embodiment discloses a two-color molded anti-clogging cylindrical dripper. Referring to Figure 1, it includes a dripper body 1, and also includes a water inlet area 2, a water outlet area 3 and a filter area 4 integrated on the dripper body 1; the water inlet area 2 is connected to the water outlet area 3 through the filter area 4.
  • the water inlet area 2 includes a water inlet 21 connected to the inner cavity of the dripper body 1.
  • the other end of the water inlet 21 is connected to a hard labyrinth flow channel 22; the hard labyrinth flow channel 22 is arranged around the water inlet 21.
  • a water inlet filter grid 211 is provided around the water inlet 21; the hard labyrinth flow channel 22 is formed by an external toothed baffle 221 and the inner toothed baffle 222.
  • the outer toothed baffle 221 and the inner toothed baffle 222 are arranged relative to each other according to the meshing position, and there is a gap between the outer toothed baffle 221 and the inner toothed baffle 222 in the opposite directions. distance to form a continuous zigzag flow channel, the upper surfaces of the outer toothed baffle 221 and the inner toothed baffle 222 along the radial direction match the inner wall of the water pipe; the outer toothed baffle 221 and the inner toothed baffle 222 are viewed from above
  • the linear shape is a combination of straight lines and curves.
  • the water inlet area 2 also includes an elastic labyrinth flow channel 23 connected to the water outlet of the hard labyrinth flow channel 22;
  • the elastic labyrinth flow channel 23 includes an elastic diaphragm 231, a first elastic tooth chain 232 and a second elastic tooth chain 233; the elastic diaphragm 231 is arranged on the outer wall of the dripper body 1, and the elastic diaphragm 231
  • the dripper body 1 below is provided with a water pressure window 24 that communicates with the inner cavity of the dripper body 1.
  • the first elastic tooth chain 232 and the second elastic tooth chain 233 are located directly above the elastic diaphragm 231.
  • the elastic tooth chain 232 and the second elastic tooth chain 233 are arranged relatively according to the meshing position, and there is a distance between the first elastic tooth chain 232 and the second elastic tooth chain 233 in the opposite directions to form a continuous zigzag flow channel.
  • the radial lower surfaces of an elastic tooth chain 232 and a second elastic tooth chain 233 form a pressure regulating flow channel 234 with the elastic diaphragm 231, see Figure 8; the elastic labyrinth flow channel 23 is injection molded in one step and integrated into the dripper body 1 .
  • the elastic labyrinth flow channel 23 is made of thermoplastic elastomer.
  • the radial lower surfaces of the first elastic tooth chain 232 and the second elastic tooth chain 233 are inclined surfaces or curved surfaces, so that the cross section constituting the pressure regulating flow channel 234 is a polygon.
  • the filtration area 4 includes a primary filtration area 41 and a secondary filtration area 42;
  • the primary filtration area 41 includes a primary sedimentation tank 411, a first-level filter grid 412 and a second-level filter grid.
  • the first-level sedimentation tank 411 is connected with the water inlet area 2, and the first-level filter grid 412 and the second-level filter are respectively provided on the two sides of the first-level sedimentation tank 411 along the length direction of the dripper body.
  • the secondary filtration area 42 includes a first secondary sedimentation tank 421, a second secondary sedimentation tank 422, a first secondary filter grid 423 and a second secondary filter grid 424; the first secondary sedimentation tank 421 passes through the first secondary sedimentation tank 421.
  • the primary filter grid 412 is connected with the primary sedimentation tank 411, and the first and secondary filter grids 423 are arranged on the side of the first secondary sedimentation tank 421 away from the first primary filter grid 412;
  • the second secondary sedimentation tank 422 is connected to the first-level sedimentation tank 411 through the second-level filter grid 413, and the second-level filter grid 424 is provided on the side of the second-level sedimentation tank 422 away from the second-level filter grid 413;
  • the first The grid width of the first-level filtering grid 412 and the second-level filtering grid 413 is larger than the grid width of the first-level filtering grid 423 and the second-level filtering grid 424 Width, the first-level filtering grid 412 and the second-level
  • the water outlet area 3 includes a first water outlet curve 31 and a first water outlet ring 32; the first water outlet curve 31 is located on the outside of the water inlet area 2 in the circumferential direction and is connected to the filter area 4.
  • the curve 31 is surrounded by a plurality of baffles 311 and a first circumferential baffle 312 and a second circumferential baffle 313 located near both ends of the dripper body 1.
  • the plurality of baffles 311 are staggered along the outer wall of the dripper body 1 Set to form a continuous curve
  • the first circumferential baffle 312 is provided with a first water outlet 314
  • the first water outlet ring 32 consists of a first peripheral baffle 321 located at the first end of the dripper body 1 and a first circumferential surrounded by a baffle 312
  • the first water outlet ring 32 and the first water outlet curve 31 are connected through the first water outlet 314
  • the baffle 311, the first circumferential baffle 312 and the first peripheral baffle 321 are arranged along the radial direction.
  • the upper surface matches the inner wall of the water pipe.
  • the water outlet area 3 also includes a second water outlet curve 33 and a second water outlet ring 34; the second water outlet curve 33 is located on the other outer side of the water inlet area 2 in the circumferential direction and is connected to the filter area 4;
  • the second water outlet curve 33 is surrounded by a plurality of baffles 331 and a first circumferential baffle 312 and a second circumferential baffle 313 located near both ends of the dripper body 1.
  • the plurality of baffles 331 are along the dripper body. 1.
  • the outer walls are staggered to form continuous curves.
  • the first circumferential baffle 312 is provided with a third water outlet 332; the first water outlet ring 32 and the second water outlet curve 33 are connected through the third water outlet 332; the baffle The upper surfaces of the second 331 and the second circumferential baffle 313 in the radial direction are adapted to the inner wall of the water pipe.
  • the second water outlet ring 34 is surrounded by a second peripheral baffle 341 and a second circumferential baffle 313 located at the second end of the dripper body 1; the second circumferential baffle 313 is provided with a second water outlet 315.
  • the water outlet ring 34 and the first water outlet curve 31 are connected through the second water outlet 315; the second circumferential baffle 313 is provided with a fourth water outlet 333, and the second water outlet ring 34 and the second water outlet curve 33 pass through the fourth water outlet 333.
  • the four water outlets 333 are connected; the radial upper surface of the second peripheral baffle 341 is adapted to the inner wall of the water pipe.
  • the working process of this embodiment is: the water source is filtered by the water inlet filter grid 211, flows from the water inlet 21 into the hard labyrinth flow channel 22 to dissipate energy, and then flows into the elastic labyrinth flow channel 23. At this time, the water in the elastic labyrinth flow channel 23 and the water in the water pipe, a pressure difference is formed on both sides of the elastic diaphragm 231.
  • the water source acts on the elastic diaphragm 231 through the water pressure window 24. When the water pressure is high, the elastic diaphragm 231 is pressed toward the first elastic tooth chain 232 and The direction deformation of the second elastic tooth chain 233 causes the flow area of the pressure-regulating flow channel 234 to become smaller.
  • the flow area of the pressure-regulating flow channel 234 becomes larger, thereby realizing the flow of water out of the elastic labyrinth flow channel 23.
  • the flow rate is constant; the constant flow water flows into the first-level sedimentation tank 411 and passes through the first-level filter grid 412 and the second-level filter grid 413, larger impurities remain in the first-level sedimentation tank 411, and then the water flows into the first- and second-level sedimentation tanks 421 and the second-level sedimentation tank 422 respectively, passing through the first-level sedimentation tank 411 respectively.
  • the water outlet area 3 only includes the first water outlet curve 31, the second water outlet curve 33 and the first water outlet loop 32; in this embodiment, the self-filtration area 4 , the water flows out in two directions, one direction is through the first water outlet curve 31 and flows into the first water outlet ring 32 through the first water outlet 314, and the other direction is through the second water outlet curve 33 and through the third water outlet.
  • 332 flows into the first water outlet ring 32, a drip irrigation port is opened on the water pipe wall at a position corresponding to the first water outlet ring 32, and the water flows out from the drip irrigation port to complete the drip irrigation process.

Abstract

一种双色成型抗堵塞圆柱滴头，包括集成在滴头本体（1）±的进水区（2）、出水区（3）和过滤区（4）;进水区（2）通过过滤区（4）与出水区（3）连通；进水区（2）包括连通滴头本体（1）内腔的进水口（21）,进水口（21）另一端连通有硬质迷宫流道（22）,进水口（21）处设置有进水过滤栅格（211）,过滤区（4）包括一级过滤区（41）和二级过滤区（42）。如此设置减少了水源杂质造成的堵塞，同时减少了土壤中的水倒灌时泥沙对滴头流道的堵塞，提高了滴头的抗堵性能，进而提高了滴头的使用寿命。

Description

一种双色成型抗堵塞圆柱滴头 技术领域
本发明涉及节水灌溉技术领域，特别是涉及一种双色成型抗堵塞圆柱滴头。
背景技术
滴灌是节水灌溉中一种先进的灌溉技术，越来越受到世界各国的重视，所谓滴灌是按照作物需水要求，通过管道系统与安装在毛管上的滴头，将水和作物需要的水分和养分一滴一滴，均匀而又缓慢地滴入作物根区土壤中的灌水方法。滴灌不破坏土壤结构，土壤内部水、肥、气、热经常保持适宜于作物生长的良好状况，蒸发损失小，不产生地面径流，几乎没有深层渗漏，是一种省水的灌水方式，而地埋式的滴头的水的利用率更高。
但是地埋式滴头的不足之处是滴头易堵塞，严重时会使整个系统无法正常工作，甚至报废；引起堵塞的原因可能是物理因素、生物因素或化学因素：如水中的泥沙、有机物质或是微生物以及化学沉凝物等；而这些堵塞的因素，一方面来自于灌溉的水源，即在浇灌的方向发生堵塞；另一方面，当灌溉停止时，土壤中水份会从滴灌口倒灌回滴头，引起堵塞。
发明内容
为了解决以上技术问题，本发明提供一种双色成型抗堵塞圆柱滴头，减少了来自水源的杂质对滴头流道的堵塞，同时减少了土壤中的水倒灌时泥沙对滴头流道的堵塞，并且设置的沉淀池对于泥沙有更大的包容性，提高了滴头的抗堵性能，进而延长了滴头的使用寿命。
为了达到上述目的，本发明采用的技术方案为：一种双色成型抗堵塞圆柱滴头包括滴头本体，还包括集成在滴头本体上的进水区、出水区和过滤区；进水区通过过滤区与出水区连通。
此技术方案中，滴头本体外壁与水管内壁形成密闭的流道，进水区为水源进入滴管中消能稳压的区域，出水区为经过稳压的水源流出滴头的区域，过滤 区设置在进水区和出水区之间。
通过采用此技术方案，过滤区一方面可以过滤进水区过来的杂质，避免杂质堵塞滴灌口，另一方面可以过滤出水区倒灌回来的杂质，以防杂质堵塞进水区流道而缩短滴头的使用寿命。
作为优选，过滤区包括一级过滤区；一级过滤区包括一级沉淀池、第一一级过滤栅格和第二一级过滤栅格；一级沉淀池与进水区连通，一级沉淀池沿滴头本体长度方向上的两个侧边上分别设有第一一级过滤栅格和第二一级过滤栅格。
通过采用此技术方案，一级过滤区设置了一级沉淀池，实现了容纳杂质的作用，避免了因杂质流入进水区而直接堵塞，有些杂质经过长时间不断地冲刷也可能被冲碎而被冲出滴头；在一级沉淀池的两侧分别设置了第一一级过滤栅格和第二一级过滤栅格，实现了水源的分流，同时增多了栅格的数量，当有的栅格堵塞之后，不会影响滴头出水，延长了滴头的使用寿命。
作为优选，过滤区还包括二级过滤区；二级过滤区包括第一二级沉淀池、第二二级沉淀池、第一二级过滤栅格和第二二级过滤栅格；第一二级沉淀池通过第一一级过滤栅格与一级沉淀池连通，第一二级过滤栅格设置在第一二级沉淀池远离第一一级过滤栅格的一侧；第二二级沉淀池通过第二一级过滤栅格与一级沉淀池连通，第二二级过滤栅格设置在第二二级沉淀池远离第二一级过滤栅格的一侧。
通过采用此技术方案，设置二级过滤区，提高了过滤区的过滤性能，增设了第一二级沉淀池、第二二级沉淀池，可以容纳更多的杂质，增大了对杂质的包容性，以延长滴头的使用寿命。
作为优选，第一一级过滤栅格和第二一级过滤栅格的格子宽度大于第一二级过滤栅格和第二二级过滤栅格的格子宽度。
通过采用此技术方案，实现了将杂质按照大小分到一级沉淀池、第一二级沉淀池和第二二级沉淀池内，体积大的杂质沉积在一级沉淀池，体积小的杂质沉积在第一二级沉淀池和第二二级沉淀池内，实现杂质的分散沉积，提高了滴头的抗堵性能。
作为优选，第一一级过滤栅格和第二一级过滤栅格的格子不少于2个，第 一二级过滤栅格和第二二级过滤栅格的格子不少于5个。
通过采用此技术方案，设置的栅格的数量足够多，避免了栅格一堵俱堵的现象，延长滴头的使用寿命。
作为优选，进水区包括连通滴头本体内腔的进水口，进水口另一端连通有硬质迷宫流道；进水口处设置有进水过滤栅格；硬质迷宫流道围绕进水口设置，硬质迷宫流道由外齿形挡板和内齿形挡板围成，外齿形挡板和内齿形挡板按啮合的位置相对设置，且外齿形挡板和内齿形挡板相对的方向间留有距离以形成连续的折线形流道，外齿形挡板和内齿形挡板沿径向的上表面与水管内壁相适配；外齿形挡板和内齿形挡板俯视的线性形状为直线或曲线中的至少一种。
通过采用此技术方案，进水口处设置有进水过滤栅格实现了对水源的第一步过滤，避免了杂质流入进水区而堵塞流道，另外硬质迷宫流道的设置，一方面实现对水源的消能以保证其压力恒定，同时折线型流道形成水流速度差，有利于将进入硬质迷宫流道的杂质进行冲刷，起到防堵塞的作用。
作为优选，进水区还包括与硬质迷宫流道出水端连通的弹性迷宫流道；弹性迷宫流道，包括弹性膜片、第一弹性齿链和第二弹性齿链；弹性膜片设置在滴头本体外壁上，弹性膜片下方的滴头本体上设置有连通滴头本体内腔的水压窗口，第一弹性齿链和第二弹性齿链位于弹性膜片的正上方，第一弹性齿链和第二弹性齿链按啮合的位置相对排布，且第一弹性齿链和第二弹性齿链相对的方向间留有距离以形成连续的折线形流道，第一弹性齿链和第二弹性齿链径向的下表面与弹性膜片形成一个调压流道；弹性迷宫流道一次注塑成型并集成在滴头本体上。
通过采用此技术方案，在硬质迷宫流道后面设置弹性迷宫流道，一方面可以实现根据水管中来的水压来调整调压流道的截面积，水源通过水压窗口作用在弹性膜片上，水压大时，弹性膜片被压向第一弹性齿链和第二弹性齿链的方向变形，导致调压流道通流面积变小，相反，当水压小时调压流道通流面积变大，进而实现经弹性迷宫流道出来的水流量是恒定的，起到调节和保持恒定的滴头流量的作用；另一方面，当杂质进入弹性迷宫流道中时，杂质使调压流道通流面积变小，水压变大，迫使弹性膜片变形，从而使杂质通过弹性迷宫流道，起到自冲洗的作用。
作为优选，弹性迷宫流道的材质为热塑性弹性体。
通过采用此技术方案，实现了滴头本体与弹性迷宫流道一次注塑成型，省掉了传统滴头加工过程中需要多套模具和定位及焊接工序，简化了加工工艺，降低了生产成本；另外，弹性迷宫流道采用可完全回收利用的热塑性弹性材质弹性体代替传统滴头的硅胶材质压力补偿片，易回收利用，节约能源且利于环境保护。
作为优选，第一弹性齿链和第二弹性齿链径向的下表面为斜面或曲面，以使构成调压流道的截面为多边形。
通过采用此技术方案，使调压流道的截面的周长变大，各边转折处更平滑，防止杂质淤积在调压流道内，起到防堵塞的作用。
作为优选，出水区包括第一出水弯道和第一出水环道；第一出水弯道位于进水区周向的外侧并与过滤区连通，第一出水弯道由多个挡板一和位于近滴头本体两端的第一周向挡板和第二周向挡板围成，多个挡板一沿滴头本体外壁交错设置以形成连续的弯道，第一周向挡板上设置有第一出水口；第一出水环道由位于滴头本体第一端的第一周边挡板和第一周向挡板围成；第一出水环道与第一出水弯道通过第一出水口连通；挡板一、第一周向挡板和第一周边挡板沿径向的上表面与水管内壁相适配。
通过采用此技术方案，第一出水弯道的设置增加了出水流道的长度，实现了阻止杂质进入的效果，挡板的设置也具备容纳杂质的作用，同时还对管壁有支撑作用，提高了地埋时管子的抗压、抗变形的能力；另外，当滴头安装到水管内壁时，要在水管上第一出水环道对应的位置上设置滴灌口，第一出水环道设置为环绕整个滴头本体的一周，降低了在水管壁上开滴灌口的难度。
作为优选，出水区还包括第二出水弯道；所述第二出水弯道位于进水区周向的另一外侧并与过滤区连通；第二出水弯道由多个挡板二和位于近滴头本体两端的第一周向挡板和第二周向挡板围成，多个挡板二沿滴头本体外壁交错设置以形成连续的弯道，第一周向挡板上设置有第三出水口；第一出水环道与第二出水弯道通过第三出水口连通；挡板二和第二周向挡板沿径向的上表面与水管内壁相适配。
通过采用此技术方案，在进水区周向的另一外侧设置的第二出水弯道，具 备了与第一出水弯道的同样的功能，提高了整个滴头的抗堵、抗压的性能，而且使得滴头的平衡性更好。
作为优选，出水区还包括第二出水环道；第二出水环道由位于滴头本体第二端的第二周边挡板和第二周向挡板围成；第二周向挡板上设置有第二出水口，第二出水环道与第一出水弯道通过第二出水口连通；第二周向挡板上设置有第四出水口，第二出水环道与第二出水弯道通过第四出水口连通；第二周边挡板沿径向的上表面与水管内壁相适配。
通过采用此技术方案，增加了第二出水环道，可以有选择的开设滴灌口的数量和位置，既可以两个出水环道上都开，也可以择一开。
综上所述，本发明具有如下的有益技术效果：
1.通过设置两级过滤区，实现了容纳杂质的作用，避免了因杂质流入进水区而直接堵塞，有些杂质经过长时间不断地冲刷也可能被冲碎而被冲出滴头，实现了将杂质按照大小分到一级沉淀池、第一二级沉淀池和第二二级沉淀池内，体积大的杂质沉积在一级沉淀池，体积小的杂质沉积在第一二级沉淀池和第二二级沉淀池内，实现杂质的分散沉积，增大了对杂质的包容性，提高了滴头的抗堵性能，进而延长了滴头的使用寿命。
2.进水口处设置有进水过滤栅格实现了对水源的第一步过滤，避免了杂质流入进水区而堵塞流道，另外硬质迷宫流道的设置，一方面实现对水源的消能以保证其压力恒定，同时折线型流道形成水流速度差，有利于将进入硬质迷宫流道的杂质进行冲刷，起到防堵塞的作用。
3.在硬质迷宫流道后面设置弹性迷宫流道，一方面可以实现根据水管中来的水压来调整调压流道的截面积，水源通过水压窗口作用在弹性膜片上，水压大时，弹性膜片被压向第一弹性齿链和第二弹性齿链的方向变形，导致调压流道通流面积变小，相反，当水压小时调压流道通流面积变大，进而实现经弹性迷宫流道出来的水流量是恒定的；起到调节和保持恒定的滴头流量的作用，另一方面，当杂质进入弹性迷宫流道中时，杂质使调压流道通流面积变小，水压变大，迫使弹性膜片变形，从而使杂质通过弹性迷宫流道，起到自冲洗的作用。
附图说明
图1是一种双色成型抗堵塞圆柱滴头的立体图；
图2是一种双色成型抗堵塞圆柱滴头的主视图；
图3是图2的A-A剖视图；
图4是一种双色成型抗堵塞圆柱滴头的俯视图；
图5是一种双色成型抗堵塞圆柱滴头的仰视图；
图6是实施例2的一种双色成型抗堵塞圆柱滴头的主视图；
图7是弹性迷宫流道的示意图；
图8是图7中弹性迷宫流道的B向视图。
附图标记说明：1-滴头本体；2-进水区；21-进水口；211-进水过滤栅格；
22-硬质迷宫流道；221-外齿形挡板；222-内齿形挡板；
23-弹性迷宫流道；231-弹性膜片；232-第一弹性齿链；233-第二弹性齿链；234-调压流道；
24-水压窗口；
3-出水区；31-第一出水弯道；311-挡板一；312-第一周向挡板；313-第二周向挡板；314-第一出水口；315-第二出水口；
32-第一出水环道；321-第一周边挡板；
33-第二出水弯道；331-挡板二；332-第三出水口；333-第四出水口；
34-第二出水环道；341-第二周边挡板；
4-过滤区；41-一级过滤区；411-一级沉淀池；412-第一一级过滤栅格；413-第二一级过滤栅格；
42-二级过滤区；421-第一二级沉淀池；422-第二二级沉淀池；423-第一二级过滤栅格；424-第二二级过滤栅格。
具体实施方式
以下结合附图对本发明作进一步详细说明。
本实施例公开一种双色成型抗堵塞圆柱滴头，参照图1，包括滴头本体1，还包括集成在滴头本体1上的进水区2、出水区3和过滤区4；进水区2通过过滤区4与出水区3连通。
参照图1和图2，进水区2包括连通滴头本体1内腔的进水口21，进水口21另一端连通有硬质迷宫流道22；硬质迷宫流道22围绕进水口21处设置，围绕进水口21处设置有进水过滤栅格211；硬质迷宫流道22由外齿形挡板221 和内齿形挡板222围成，外齿形挡板221和内齿形挡板222按啮合的位置相对设置，且外齿形挡板221和内齿形挡板222相对的方向间留有距离以形成连续的折线形流道，外齿形挡板221和内齿形挡板222沿径向的上表面与水管内壁相适配；外齿形挡板221和内齿形挡板222俯视的线性形状为直线和曲线相结合。
参照图1和图2，进水区2还包括与硬质迷宫流道22出水端连通的弹性迷宫流道23；
参照图1和图7，弹性迷宫流道23，包括弹性膜片231、第一弹性齿链232和第二弹性齿链233；弹性膜片231设置在滴头本体1外壁上，弹性膜片231下方的滴头本体1上设置有连通滴头本体1内腔的水压窗口24，参照图3；第一弹性齿链232和第二弹性齿链233位于弹性膜片231的正上方，第一弹性齿链232和第二弹性齿链233按啮合的位置相对排布，且第一弹性齿链232和第二弹性齿链233相对的方向间留有距离以形成连续的折线形流道，第一弹性齿链232和第二弹性齿链233径向的下表面与弹性膜片231形成一个调压流道234，参照图8；弹性迷宫流道23一次注塑成型并集成在滴头本体1上。
弹性迷宫流道23的材质为热塑性弹性体。
参照图8，第一弹性齿链232和第二弹性齿链233径向的下表面为斜面或曲面，以使构成调压流道234的截面为多边形。
参照图1和图2，过滤区4包括一级过滤区41和二级过滤区42；一级过滤区41包括一级沉淀池411、第一一级过滤栅格412和第二一级过滤栅格413；一级沉淀池411与进水区2连通，一级沉淀池411沿滴头本体长度方向上的两个侧边上分别设有第一一级过滤栅格412和第二一级过滤栅格413。二级过滤区42包括第一二级沉淀池421、第二二级沉淀池422、第一二级过滤栅格423和第二二级过滤栅格424；第一二级沉淀池421通过第一一级过滤栅格412与一级沉淀池411连通，第一二级过滤栅格423设置在第一二级沉淀池421远离第一一级过滤栅格412的一侧；第二二级沉淀池422通过第二一级过滤栅格413与一级沉淀池411连通，第二二级过滤栅格424设置在第二二级沉淀池422远离第二一级过滤栅格413的一侧；第一一级过滤栅格412和第二一级过滤栅格413的格子宽度大于第一二级过滤栅格423和第二二级过滤栅格424的格子 宽度，第一一级过滤栅格412和第二一级过滤栅格413的格子有4个，第一二级过滤栅格423的格子有24个，第二二级过滤栅格424的格子有20个。
参照图1和图4，出水区3包括第一出水弯道31和第一出水环道32；第一出水弯道31位于进水区2周向的外侧并与过滤区4连通，第一出水弯道31由多个挡板一311和位于近滴头本体1两端的第一周向挡板312和第二周向挡板313围成，多个挡板一311沿滴头本体1外壁交错设置以形成连续的弯道，第一周向挡板312上设置有第一出水口314；第一出水环道32由位于滴头本体1第一端的第一周边挡板321和第一周向挡板312围成；第一出水环道32与第一出水弯道31通过第一出水口314连通；挡板一311、第一周向挡板312和第一周边挡板321沿径向的上表面与水管内壁相适配。
参照图1和图5，出水区3还包括第二出水弯道33和第二出水环道34；第二出水弯道33位于进水区2周向的另一外侧并与过滤区4连通；第二出水弯道33由多个挡板二331和位于近滴头本体1两端的第一周向挡板312和第二周向挡板313围成，多个挡板二331沿滴头本体1外壁交错设置以形成连续的弯道，第一周向挡板312上设置有第三出水口332；第一出水环道32与第二出水弯道33通过第三出水口332连通；挡板二331和第二周向挡板313沿径向的上表面与水管内壁相适配。第二出水环道34由位于滴头本体1第二端的第二周边挡板341和第二周向挡板313围成；第二周向挡板313上设置有第二出水口315，第二出水环道34与第一出水弯道31通过第二出水口315连通；第二周向挡板313上设置有第四出水口333，第二出水环道34与第二出水弯道33通过第四出水口333连通；第二周边挡板341沿径向的上表面与水管内壁相适配。
本实施例的工作过程为：水源经进水过滤栅格211过滤，自进水口21流入硬质迷宫流道22消能，再流入弹性迷宫流道23，此时弹性迷宫流道23内的水和水管内的水，在弹性膜片231两侧形成压差，水源通过水压窗口24作用在弹性膜片231上，水压大时，弹性膜片231被压向第一弹性齿链232和第二弹性齿链233的方向变形，导致调压流道234通流面积变小，相反，当水压小时调压流道234通流面积变大，进而实现经弹性迷宫流道23出来的水流量是恒定的；恒定流量的水流再流入一级沉淀池411，经第一一级过滤栅格412 和第二一级过滤栅格413过滤，较大的杂质留在一级沉淀池411，接下来水流分别流入第一二级沉淀池421和第二二级沉淀池422，分别经过第一二级过滤栅格423和第二二级过滤栅格424的过滤，较小的杂质留在第一二级沉淀池421和第二二级沉淀池422中，接下来，经过第一二级过滤栅格423过滤的水流流入第一出水弯道31，分别经第一出水口314和第二出水口315流入第一出水环道32和第二出水环道34，经过第二二级过滤栅格424过滤的水流流入第二出水弯道33，再分别经第三出水口332和第四出水口333流入第一出水环道32和第二出水环道34，最后水流在水管壁对应第一出水环道32和第二出水环道34的位置上开设滴灌口流出水管，完成滴灌过程。
实施例2
本实施例与实施例1的不同在于，参照图6：出水区3只包括第一出水弯道31、第二出水弯道33和第一出水环道32；本实施例中，自过滤区4，流出的水分两个方向，一个方向是经第一出水弯道31，通过第一出水口314流入第一出水环道32，另一个方向是经第二出水弯道33，通过第三出水口332流入第一出水环道32，在水管壁对应第一出水环道32的位置开设滴灌口，水流自滴灌口流出，完成滴灌过程。
以上，仅是本发明的较佳实施例而已，并非是对本发明作其他形式的限制，任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例应用于其他领域，但是凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化，仍属于本发明技术方案的保护范围。

Claims (10)

  1. 一种双色成型抗堵塞圆柱滴头，包括滴头本体(1)，其特征在于：还包括集成在所述滴头本体(1)上的进水区(2)、出水区(3)和过滤区(4)；
    所述进水区(2)通过所述过滤区(4)与所述出水区(3)连通。
  2. 根据权利要求1所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述过滤区(4)包括一级过滤区(41)；
    所述一级过滤区(41)包括一级沉淀池(411)、第一一级过滤栅格(412)和第二一级过滤栅格(413)；所述一级沉淀池(411)与所述进水区(2)连通，所述一级沉淀池(411)沿滴头本体长度方向上的两个侧边上分别设有所述第一一级过滤栅格(412)和所述第二一级过滤栅格(413)。
  3. 根据权利要求2所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述过滤区(4)还包括二级过滤区(42)；
    所述二级过滤区(42)包括第一二级沉淀池(421)、第二二级沉淀池(422)、第一二级过滤栅格(423)和第二二级过滤栅格(424)；
    所述第一二级沉淀池(421)通过所述第一一级过滤栅格(412)与所述一级沉淀池(411)连通，所述第一二级过滤栅格(423)设置在所述第一二级沉淀池(421)远离所述第一一级过滤栅格(412)的一侧；
    所述第二二级沉淀池(422)通过所述第二一级过滤栅格(413)与所述一级沉淀池(411)连通，所述第二二级过滤栅格(424)设置在所述第二二级沉淀池(422)远离所述第二一级过滤栅格(413)的一侧；
    优选的，第一一级过滤栅格(412)和第二一级过滤栅格(413)的格子宽度大于第一二级过滤栅格(423)和第二二级过滤栅格(424)的格子宽度。
  4. 根据权利要求1所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述进水区(2)包括连通所述滴头本体(1)内腔的进水口(21)，所述进水口(21)另一端连通有硬质迷宫流道(22)；
    所述进水口(21)处设置有进水过滤栅格(211)；
    所述硬质迷宫流道(22)围绕所述进水口(21)设置，所述硬质迷宫流道 (22)由外齿形挡板(221)和内齿形挡板(222)围成，所述外齿形挡板(221)和所述内齿形挡板(222)按啮合的位置相对设置，且所述外齿形挡板(221)和所述内齿形挡板(222)相对的方向间留有距离以形成连续的折线形流道，所述外齿形挡板(221)和所述内齿形挡板(222)沿径向的上表面与水管内壁相适配；
    所述外齿形挡板(221)和所述内齿形挡板(222)俯视的线性形状为直线和曲线中的至少一种。
  5. 根据权利要求4所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述进水区(2)还包括与所述硬质迷宫流道(22)出水端连通的弹性迷宫流道(23)；
    所述弹性迷宫流道(23)包括弹性膜片(231)、第一弹性齿链(232)和第二弹性齿链(233)；所述弹性膜片(231)设置在所述滴头本体(1)外壁上，所述弹性膜片(231)下方的所述滴头本体(1)上设置有连通所述滴头本体(1)内腔的水压窗口(24)，所述第一弹性齿链(232)和所述第二弹性齿链(233)位于所述弹性膜片(231)的正上方，所述第一弹性齿链(232)和所述第二弹性齿链(233)按啮合的位置相对排布，且所述第一弹性齿链(232)和所述第二弹性齿链(233)相对的方向间留有距离以形成连续的折线形流道，所述第一弹性齿链(232)和所述第二弹性齿链(233)径向的下表面与所述弹性膜片(231)形成一个调压流道(234)；
    所述弹性迷宫流道(23)一次注塑成型并集成在所述滴头本体(1)上。
  6. 根据权利要求5所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述弹性迷宫流道(23)的材质为热塑性弹性体。
  7. 根据权利要求6所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述第一弹性齿链(232)和所述第二弹性齿链(233)径向的下表面为斜面或曲面，以使构成调压流道(234)的截面为多边形。
  8. 根据权利要求1所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述出水区(3)包括第一出水弯道(31)和第一出水环道(32)；
    所述第一出水弯道(31)位于所述进水区(2)周向的外侧并与所述过滤 区(4)连通，所述第一出水弯道(31)由多个挡板一(311)和位于近所述滴头本体(1)两端的第一周向挡板(312)和第二周向挡板(313)围成，多个所述挡板一(311)沿所述滴头本体(1)外壁交错设置以形成连续的弯道，所述第一周向挡板(312)上设置有第一出水口(314)；
    所述第一出水环道(32)由位于所述滴头本体(1)第一端的第一周边挡板(321)和所述第一周向挡板(312)围成；所述第一出水环道(32)与所述第一出水弯道(31)通过所述第一出水口(314)连通；
    所述挡板一(311)、所述第一周向挡板(312)和所述第一周边挡板(321)沿径向的上表面与水管内壁相适配。
  9. 根据权利要求8所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述出水区(3)还包括第二出水弯道(33)；
    所述第二出水弯道(33)位于所述进水区(2)周向的另一外侧并与所述过滤区(4)连通；所述第二出水弯道(33)由多个挡板二(331)和位于近所述滴头本体(1)两端的所述第一周向挡板(312)和所述第二周向挡板(313)围成，多个所述挡板二(331)沿所述滴头本体(1)外壁交错设置以形成连续的弯道，所述第一周向挡板(312)上设置有第三出水口(332)；所述第一出水环道(32)与所述第二出水弯道(33)通过所述第三出水口(332)连通；
    所述挡板二(331)和所述第二周向挡板(313)沿径向的上表面与水管内壁相适配。
  10. 根据权利要求9所述的一种双色成型抗堵塞圆柱滴头，其特征在于：所述出水区(3)还包括第二出水环道(34)；
    所述第二出水环道(34)由位于所述滴头本体(1)第二端的第二周边挡板(341)和所述第二周向挡板(313)围成；所述第二周向挡板(313)上设置有第二出水口(315)，所述第二出水环道(34)与所述第一出水弯道(31)通过所述第二出水口(315)连通；所述第二周向挡板(313)上设置有第四出水口(333)，所述第二出水环道(34)与所述第二出水弯道(33)通过所述第四出水口(333)连通；
    所述第二周边挡板(341)沿径向的上表面与水管内壁相适配。
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