WO2020206717A1 - 滴灌连接头及滴灌管 - Google Patents

滴灌连接头及滴灌管 Download PDF

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Publication number
WO2020206717A1
WO2020206717A1 PCT/CN2019/083569 CN2019083569W WO2020206717A1 WO 2020206717 A1 WO2020206717 A1 WO 2020206717A1 CN 2019083569 W CN2019083569 W CN 2019083569W WO 2020206717 A1 WO2020206717 A1 WO 2020206717A1
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WIPO (PCT)
Prior art keywords
water
water inlet
mounting hole
drip irrigation
hole
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PCT/CN2019/083569
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English (en)
French (fr)
Inventor
秦春明
秦晓汉
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秦春明
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Application filed by 秦春明 filed Critical 秦春明
Publication of WO2020206717A1 publication Critical patent/WO2020206717A1/zh

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    • 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
    • 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
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • 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
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • 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
    • 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
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Definitions

  • the invention relates to the technical field of agricultural irrigation, in particular to a drip irrigation connector and a drip irrigation pipe.
  • Drip irrigation pipes are generally laid on the ground.
  • Drip irrigation pipes usually include a water pipe and a dripper.
  • the dripper is arranged on the inner pipe wall of the water pipe.
  • a turbulent flow channel is formed between the dripper and the water pipe.
  • the water in the water pipe passes through the turbulent flow channel from the water pipe.
  • the nozzle is discharged.
  • the drip irrigation pipe does not supply water
  • the water outlet easily enters the debris and the roots of plants and is blocked, causing the dripper to fail, and the corresponding crops cannot get sufficient water supply and affect their growth.
  • Resulting in poor anti-clogging performance and low reliability of the drip irrigation pipe How to design a drip irrigation technology with good anti-blocking performance and high reliability is the technical problem to be solved by the present invention.
  • the technical problem to be solved by the present invention is to provide a drip irrigation connector and a drip irrigation pipe, so as to improve the anti-blocking performance and use reliability of the drip irrigation pipe through the drip irrigation connector.
  • a drip irrigation connector including:
  • Connecting pipes at least one mounting hole is opened on the pipe wall of the connecting pipe;
  • the elastic baffle abuts against the inner pipe wall of the connecting pipe and sealingly covers the mounting hole, and a through hole is opened on the elastic baffle opposite to the mounting hole;
  • the drip head is inserted into the installation hole and connected with the elastic baffle, a water inlet cavity communicating with the through hole is formed in the drip head, and the side wall of the drip head is opened There is a water outlet communicating with the water inlet cavity;
  • the elastic baffle deforms toward the mounting hole under the action of the water pressure in the connecting pipe and pushes the drip head to protrude from the mounting hole, so that the water outlet is removed from the mounting hole. Exposed in the hole.
  • the drip head further includes: a first sealing ring, the first sealing ring is distributed around the outer circumference of the drip head and located outside the water outlet.
  • the first sealing ring abuts against the wall of the mounting hole or the first sealing ring abuts against the periphery of the mounting hole.
  • the drip head further includes: a second sealing ring, the second sealing ring is distributed around the outer circumference of the drip head and is located inside the water outlet, and the edge of the second sealing ring abuts on the The wall of the mounting hole; wherein the water outlet is located between the first sealing ring and the second sealing ring.
  • a water inlet component wherein a plurality of water inlet channels are formed in the water inlet part, and the water inlet direction of the water inlet channel is inclined and opposite to the water flow direction in the connecting pipe; wherein, The water inlet component is arranged in the through hole, the water inlet channel is connected to the water inlet cavity, and the water in the connecting pipe enters the water inlet cavity through the water inlet channel.
  • the water inlet component includes: a chassis, a plurality of first water inlet passages are formed in the chassis, and the water inlet direction of the first water inlet passage is inclined and opposite to the water flow direction in the connecting pipe Plug, a plurality of second water inlet channels are formed in the plug, the plug is arranged on the chassis, and the second water inlet channel is connected with the corresponding first water inlet channel and forms the water inlet Channel; wherein, the plug is inserted in the through hole, and the edge of the chassis abuts on the elastic baffle.
  • edge of the chassis facing the water flow direction in the connecting pipe is provided with an inclined flow guide surface.
  • the mounting hole is a stepped hole or a flared hole, and the inner diameter of the mounting hole is larger than the outer diameter of the mounting hole.
  • the present invention also provides a drip irrigation pipe, which includes a plurality of water delivery pipes, and also includes the above-mentioned drip irrigation connector, and the connection pipe of the drip irrigation connector is connected between two adjacent water delivery pipes.
  • the drip irrigation connector and drip irrigation pipe provided by the present invention are formed by connecting the drip irrigation connector between two adjacent water delivery pipes to form a drip irrigation pipe.
  • the elastic baffle uses water pressure to produce deformation. Under the action of water pressure, the elastic baffle deforms toward the mounting hole to push the drip head to extend from the mounting hole of the connecting pipe, so that the water outlet can be made from the mounting hole When the water is exposed, the water will be output through the water outlet to achieve drip irrigation.
  • the water pressure in the connecting pipe is reduced, and the elastic baffle relies on its own elastic reset to drive the drip head to retract into the installation hole.
  • the water outlet is installed The hole wall of the hole is blocked, which can effectively avoid the clogging of the water outlet due to the clogging of sand and plant roots under the condition of no water supply, and the anti-blocking performance and reliability of the drip irrigation pipe are improved.
  • Figure 1 is one of the cross-sectional views of the drip irrigation connector of the present invention.
  • Fig. 2 is a partial enlarged schematic diagram of area A in Fig. 1;
  • Figure 3 is the second cross-sectional view of the drip irrigation connector of the present invention.
  • Fig. 4 is a partial enlarged schematic diagram of area B in Fig. 3;
  • Figure 5 is the third cross-sectional view of the drip irrigation connector of the present invention.
  • Fig. 6 is a partial enlarged schematic diagram of area C in Fig. 5;
  • Figure 7 is a schematic diagram of the structure of the water inlet component in the drip irrigation connector of the present invention.
  • the drip irrigation connector of this embodiment includes:
  • the connecting pipe 1 is provided with at least one mounting hole 11 on the pipe wall of the connecting pipe 1;
  • the elastic baffle 2 is pressed against the inner pipe wall of the connecting pipe 1 and sealingly covers the mounting hole 11, and a through hole (not marked) is opened on the elastic baffle 2 opposite to the mounting hole 11;
  • the drip head 3 is inserted into the mounting hole 11 and connected to the elastic baffle 2.
  • the drip head 3 is formed with a water inlet cavity 31 with a communicating through hole, and the side wall of the drip head 3 is provided with a water inlet cavity
  • the water outlet 32 connected to the body 31;
  • the elastic baffle 2 deforms toward the mounting hole 11 under the action of the water pressure in the connecting pipe 1 and pushes the drip head 3 to extend from the mounting hole 11 so that the water outlet 32 is exposed from the mounting hole 11.
  • the connecting pipe 1 in the drip irrigation connector of this embodiment is used to transport water, and the water flow direction is shown by the arrow in Figure 1.
  • the water flow direction is shown by the arrow in Figure 1.
  • the connecting pipe 1 in the drip irrigation connector of this embodiment is used to transport water, and the water flow direction is shown by the arrow in Figure 1.
  • the water is not supplied, refer to Figure 1 and Figure 1 2.
  • the elastic baffle 2 is in the original posture.
  • the drip head 3 is located in the mounting hole 11, and the wall of the mounting hole 11 will shield the water outlet 32, so as to prevent the mud and plant roots from blocking the water outlet 32 and the outlet 32 is blocked.
  • water enters the connecting pipe 1, and the water pressure in the connecting pipe 1 gradually increases.
  • the elastic baffle 2 relies on its own elasticity to reset, and at the same time, it will drive the drip head 3 to retract into the mounting hole 11, and the drip During the retraction process of the head 3, the water outlet 32 always maintains the water outlet state to ensure that the sand will not stick to the water outlet 32 during the return process.
  • the water outlet 32 When the water outlet enters the installation hole 11, the water outlet 32 will Further, the hole wall of the mounting hole 11 is shielded and protected. Among them, the distance between the drip head 3 and the hole wall of the mounting hole 11 is set as required. Under the premise of ensuring that the drip head 3 can expand and contract smoothly, it is also necessary to ensure that the hole wall of the mounting hole 11 effectively prevents the water outlet 32.
  • the specific distance range value can be set adaptively according to the specific use scenario. For example, when used in a soil environment, the distance should be smaller, and when used in a sandy environment, the distance can be larger. This does not limit the specific distance range.
  • the mounting hole 11 is a stepped hole or a flared hole. The inner diameter of the mounting hole 11 is larger than the outer diameter of the mounting hole 11. Specifically, a stepped hole is used as an example.
  • the size of the hole body of the mounting hole 11 close to the outer pipe wall of the connecting pipe 1 is smaller than the size of the hole body of the mounting hole 11 near the inner pipe wall of the connecting pipe 1, while the part of the drip head 3 with the outlet 32 is located in the outer hole.
  • the elastic baffle 2 can deform in the hole body of the mounting hole 11 close to the inner pipe wall of the connecting pipe 1.
  • the space formed by the inner hole body is larger, so The elastic baffle 2 has enough space for deformation, so that the deformation amount of the elastic baffle 2 can be increased to drive the drip head 3 to effectively extend outside the mounting hole 11 to expose the water outlet 32.
  • the connecting pipe 1 can be made of harder materials, such as PVC pipes, to ensure that the mounting hole 11 has sufficient structural strength and will not be deformed.
  • the thickness of the pipe wall of the connecting pipe 1 should meet When the drip head 3 is retracted, the wall of the mounting hole 11 is used to shield the water outlet 32.
  • the specific pipe wall thickness and the size of the opening of the mounting hole 11 are not limited here, and those skilled in the art can follow the actual situation.
  • the elastic baffle 2 can be made of materials with elastic deformation functions such as elastic rubber or silicone, and the edge of the elastic baffle 2 can be glued or thermally welded The method is fixed on the pipe wall of the connecting pipe 1.
  • the elastic baffle 2 can be connected to the pipe wall of the connecting pipe 1 by hot melt welding or laser welding. There is no restriction here; for the drip head 3, it can be connected with
  • the elastic baffle 2 is an integral structure, or the drip head 3 is also connected to the elastic baffle 2 by means of glue or thermal welding.
  • the opening method can adopt a method of gradually increasing the diameter along the water outlet direction, so that even if the water outlet 32 is blocked by sediment In the next water supply, the water pressure is used to cooperate with the deformation of the drip head 3 to quickly discharge the sediment in the water outlet 32 to improve the anti-blocking ability.
  • the drip head 3 further includes: a first sealing ring 33 distributed around the outer circumference of the drip head 3 and located outside the water outlet 32. Specifically, after the drip head 3 is retracted into the mounting hole 11, the first sealing ring 33 will seal and block the outside of the water outlet 32, so as to more effectively block the external mud and sand from entering the water outlet. There are many ways to block the first sealing ring 33. For example, as shown in Figs. 1 and 2, the first sealing ring 33 is arranged on the side wall of the drip head 3, and the drip head 3 is retracted into the mounting hole 11.
  • the first sealing ring 33 is also located in the mounting hole 11, and the edge of the first sealing ring 33 abuts against the wall of the mounting hole 11; or, as shown in FIGS. 5 and 6, the first sealing ring 33 Set at the outer end of the drip head 3, when the drip head 3 is retracted into the mounting hole 11, the first sealing ring 33 is located outside the connecting pipe 1 and the edge of the first sealing ring 33 abuts against the outer pipe of the connecting pipe 1 On the wall, and the first sealing ring 33 will cover the gap between the drip head 3 and the mounting hole 11 on the outside.
  • the drip head 3 is further provided with a second sealing ring 34 around its outer circumference, the second sealing ring 34 is located inside the water outlet 32, so that the water outlet 32 is located between the first sealing ring 33 and the second sealing ring 34, The edge of the second sealing ring 34 will always abut on the hole wall of the mounting hole 11. In this way, as the drip head 3 gradually extends out of the mounting hole 11 during the drip irrigation process, the second sealing ring 34 will follow It moves in the installation hole 11, so that even if sand enters between the installation hole 11 and the drip head 3, the second sealing ring 34 can push the sand out and follow the water outlet 32 when drip irrigation is again provided. The output water is discharged to further improve the anti-blocking performance.
  • the connecting pipe 1 in order to reduce the clogging of the drip head 3 from the inside due to impurities contained in the water flowing in the connecting pipe 1, it also includes a water inlet part 4, and a plurality of water inlet channels 400 are formed in the water inlet part 4.
  • the water inlet direction is inclined and opposite to the direction of water flow in the connecting pipe 1; wherein the water inlet component 4 is arranged in the through hole, the water inlet channel 400 is connected to the water inlet cavity 31, and the water in the connecting pipe 1 passes through the water inlet channel 400 enters into the water inlet cavity 31.
  • the water flow direction in the connecting pipe 1 is the direction indicated by the solid arrow
  • the water inlet direction of the water inlet channel 400 is the direction indicated by the dotted arrow
  • the water inlet direction is relative to The direction of the water flow is inclined and set in the opposite direction.
  • the water flow through the water inlet of the water inlet channel 400 will form a pressure drop zone, which makes the flow rate of the water flowing into the water inlet channel 400 slower.
  • the impurities contained in the middle water flow follow the water flow, the impurities are not easy to enter the water inlet channel 400 under the action of inertia, thereby effectively reducing the clogging of the drip head 3 caused by impurities in the water supply flow.
  • the water inlet component 4 includes a chassis 41 and a plug 42, a plurality of first water inlet channels 401 are formed in the chassis 41, and the water inlet direction of the first water inlet channel 401 is connected to the pipe 1 The direction of the water flow is inclined and reversed; the plug 42 is formed with a plurality of second water inlet channels 402, the plug 42 is arranged on the chassis 41, and the second water inlet channel 402 is connected with the corresponding first water inlet channel 401 and forms the water inlet Channel 400; Among them, the plug 42 is inserted in the through hole, and the edge of the chassis 41 abuts on the elastic baffle 2.
  • the water inlet component 4 is assembled by the chassis 41 and the plug 42.
  • the chassis 41 and the plug 42 can be an integral structure, or can be assembled by a split design, the plug 42 is inserted into the through hole, and the chassis 41 serves as a fixed
  • the parts are connected to the elastic baffle 2, and the connection method of the chassis 41 and the elastic baffle 2 can be glued or thermally welded.
  • the water inlet part 4 can be made of hard plastic as required
  • the water inlet member 4 also adopts an elastic material, such as elastic rubber or silicone.
  • the edge of the chassis 41 facing the water flow direction in the connecting pipe 1 is provided with an inclined diversion surface 411.
  • the inclined diversion surface 411 can Incline along the direction of the water flow to effectively guide the water flow to flow smoothly through the inclined guide surface 411.
  • the edge of the elastic baffle 2 toward the water flow direction in the connecting pipe 1 can also be arranged as described above.
  • the present invention also provides a drip irrigation pipe, which includes a plurality of water delivery pipes, and also includes the above-mentioned drip irrigation connector, and the connection pipe of the drip irrigation connector is connected between two adjacent water delivery pipes.
  • a drip irrigation pipe which includes a plurality of water delivery pipes, and also includes the above-mentioned drip irrigation connector, and the connection pipe of the drip irrigation connector is connected between two adjacent water delivery pipes.
  • the specific connection method can be threaded connection or welding. In this way, in actual use, when the drip irrigation connector at a certain location is damaged, the broken drip irrigation connector can be removed and replaced with a new one, which effectively improves the service life of the drip irrigation pipe. And by controlling the difference in water pressure of the water supply, the amount of the drip head can be controlled, and then the amount of water from the outlet can be adjusted to adjust the speed of drip irrigation.
  • water pressure can also be used to flush the water outlet of the drip head.
  • the water outlet of the water outlet increases, on the other hand, the water outlet The amount of deformation is also increased, so as to achieve the purpose of cleaning the blocked water outlet.
  • the drip irrigation connector and drip irrigation pipe provided by the present invention are formed by connecting the drip irrigation connector between two adjacent water delivery pipes to form a drip irrigation pipe.
  • the elastic baffle uses water pressure to produce deformation. Under the action of water pressure, the elastic baffle deforms toward the mounting hole to push the drip head to extend from the mounting hole of the connecting pipe, so that the water outlet can be made from the mounting hole When the water is exposed, the water will be output through the water outlet to achieve drip irrigation.
  • the water pressure in the connecting pipe is reduced, and the elastic baffle relies on its own elastic reset to drive the drip head to retract into the installation hole.
  • the water outlet is installed The hole wall of the hole is blocked, which can effectively avoid the clogging of the water outlet due to the clogging of sand and plant roots under the condition of no water supply, and the anti-blocking performance and reliability of the drip irrigation pipe are improved.

Abstract

一种滴灌连接头及滴灌管，其中，滴灌连接头包括：连接管道（1），连接管道（1）的管壁上开设有至少一个安装孔（11）；弹性挡板（2），弹性挡板（2）贴靠在连接管道（1）的内管壁上并密封遮盖住安装孔（11），弹性挡板（2）上与安装孔（11）相对的部位还开设有通孔；滴水头（3），滴水头（3）插在安装孔（11）中并与弹性挡板（2）连接，滴水头（3）中形成有连通通孔的进水腔体（31），滴水头（3）的侧壁开设有与进水腔体（31）连通的出水口（32）；其中，弹性挡板（2）在连接管道（1）中水压的作用下朝向安装孔（11）中变形并推动滴水头（3）从安装孔（11）中伸出，以使得出水口（32）从安装孔（11）中露出而对外滴水，水压减小后滴水头（3）在弹性挡板（2）作用下缩回进安装孔（11）。实现通过滴灌连接头提高滴灌管的防堵性能和使用可靠性。

Description

滴灌连接头及滴灌管 技术领域
本发明涉及农业灌溉技术领域，尤其涉及一种滴灌连接头及滴灌管。
背景技术
农业种植配合滴灌技术成为目前农业发展的趋势。滴灌管一般铺设在地表，滴灌管通常包括水管和滴头，滴头设置在水管的内管壁上，滴头和水管之间形成紊流通道，水管中的水经过紊流通道从水管的出水口排出。但是，在实际使用过程中，当滴灌管不供水的情况下，出水口容易进入杂物及植物的根而被堵塞，导致该滴头失效，相对应处的农作物无法获得充足的供水而影响生长，导致滴灌管的防堵性能较差且使用可靠性较低。如何设计一种防堵性能好且使用可靠性高的滴灌技术是本发明所要解决的技术问题。
发明内容
本发明所要解决的技术问题是：提供一种滴灌连接头及滴灌管，实现通过滴灌连接头提高滴灌管的防堵性能和使用可靠性。
本发明提供的技术方案是：一种滴灌连接头，包括：
连接管道，所述连接管道的管壁上开设有至少一个安装孔；
弹性挡板，所述弹性挡板贴靠在所述连接管道的内管壁上并密封遮盖住所述安装孔，所述弹性挡板上与所述安装孔相对的部位还开设有通孔；
滴水头，所述滴水头插在所述安装孔中并与所述弹性挡板连接，所述滴水头的中形成有连通所述通孔的进水腔体，所述滴水头的侧壁开设有与所述进水腔体连通的出水口；
其中，所述弹性挡板在所述连接管道中水压的作用下朝向所述安装孔中 变形并推动所述滴水头从所述安装孔中伸出，以使得所述出水口从所述安装孔中露出。
进一步的，所述滴水头还包括：第一密封圈，所述第一密封圈绕所述滴水头的外周分布并位于所述出水口的外侧。
进一步的，在所述弹性挡板未变形的情况下，所述第一密封圈贴靠在所述安装孔的孔壁上或所述第一密封圈绕所述安装孔的外围贴靠在所述连接管道的外壁上。
进一步的，所述滴水头还包括：第二密封圈，所述第二密封圈绕所述滴水头的外周分布并位于所述出水口的内侧，所述第二密封圈的边缘贴靠在所述安装孔的孔壁上；其中，所述出水口位于所述第一密封圈和所述第二密封圈之间。
进一步的，还包括：进水部件，所述进水部件中形成多条进水通道，所述进水通道的进水方向与所述连接管道中的水流方向倾斜且反向设置；其中，所述进水部件设置在所述通孔中，所述进水通道连通所述进水腔体，所述连接管道中的水经由所述进水通道进入到所述进水腔体。
进一步的，所述进水部件包括：底盘，所述底盘中形成多条第一进水流道，所述第一进水流道的进水方向与所述连接管道中的水流方向倾斜且反向设置；插头，所述插头中形成多条第二进水流道，所述插头设置在所述底盘上，所述第二进水流道与对应的所述第一进水流道连接并形成所述进水通道；其中，所述插头插在所述通孔中，所述底盘的边缘贴靠在所述弹性挡板上。
进一步的，所述底盘面向所述连接管道中的水流方向的边缘设置有倾斜导流面。
进一步的，所述安装孔为阶梯型孔或喇叭形孔，所述安装孔的内孔径大 于所述安装孔的外孔径。
本发明还提供一种滴灌管，包括多根输水管，还包括上述滴灌连接头，所述滴灌连接头的连接管道连接在相邻的两根所述输水管之间。
与现有技术相比，本发明的优点和积极效果是：本发明提供的滴灌连接头及滴灌管，通过在相邻的两根输水管之间连接滴灌连接头形成滴灌管，滴灌连接头中的弹性挡板利用水压来产生形变，在水压作用下，弹性挡板朝向安装孔中变形以推动滴水头从连接管道的安装孔中伸出，这样，便可以使得出水口从安装孔中露出，水将经过出水口输出实现滴灌，而在供水结束后，连接管道中的水压降低，弹性挡板依靠自身弹性复位以带动滴水头回缩到安装孔中，此时，出水口被安装孔的孔壁遮挡住，可以有效的避免不供水情况下泥沙和植物根堵在出水口处而造成淤堵的情况发生，提高了滴灌管的防堵性能和使用可靠性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明滴灌连接头的剖视图之一；
图2为图1中A区域的局部放大示意图；
图3为本发明滴灌连接头的剖视图之二；
图4为图3中B区域的局部放大示意图；
图5为本发明滴灌连接头的剖视图之三；
图6为图5中C区域的局部放大示意图；
图7为本发明滴灌连接头中进水部件的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
如图1-图6所示，本实施例滴灌连接头，包括：
连接管道1，连接管道1的管壁上开设有至少一个安装孔11；
弹性挡板2，弹性挡板2贴靠在连接管道1的内管壁上并密封遮盖住安装孔11，弹性挡板2上与安装孔11相对的部位还开设有通孔(未标记)；
滴水头3，滴水头3插在安装孔11中并与弹性挡板2连接，滴水头3的中形成有连通通孔的进水腔体31，滴水头3的侧壁开设有与进水腔体31连通的出水口32；
其中，弹性挡板2在连接管道1中水压的作用下朝向安装孔11中变形并推动滴水头3从安装孔11中伸出，以使得出水口32从安装孔11中露出。
具体而言，本实施例滴灌连接头中的连接管道1用于输送水，水流方向如图1中的箭头所示，在实际使用过程中，当处于不供水的状态下，参考图1和图2，弹性挡板2处于原始姿态，此时，滴水头3位于安装孔11中，安装孔11的孔壁将对出水口32进行遮挡，这样，便可以避免泥沙和植物根堵在出水口32而造成出水口32淤堵。而在供水状态下，连接管道1中进入水，并且，连接管道1中的水压逐渐增大，参考图3和图4，随着连接管道1中水压的增大，在水压作用下使得弹性挡板2向安装孔11中发生形变，而由于滴水头3位于安装孔11中并连接在弹性挡板2上，弹性挡板2向安装孔11 中凸出后，会带动滴水头3朝向安装孔11的外侧移动，随着连接管道1中供水水压的持续增大最终使得出水口32从安装孔11中部分露出或全部露出，此时，水便可以经过出水口32输出实现滴灌作业。另外，在滴灌作业完成后，连接管道1中的水压逐渐下降，在此过程中，弹性挡板2依靠自身弹性复位，并同时将带动滴水头3回缩到安装孔11中，而在滴水头3回缩的过程中，出水口32始终保持出水状态，确保回水过程中泥沙不会粘附在出水口32中，而当出水口进入到安装孔11中后，出水口32又会进一步的被安装孔11的孔壁进行遮挡和保护。其中，滴水头3与安装孔11的孔壁之间的距离则根据需要设置，在保证滴水头3能够顺畅伸缩的前提下，还需要确保安装孔11的孔壁对出水口32进行有效的防堵保护，具体距离范围值，则可以根据具体的使用场景进行适应性的设置，例如：在泥土环境中使用，则距离要小一些，而在沙石环境中使用，则距离可以大一些，在此不对具体的距离范围进行限定。另外，为了增大弹性挡板2的变形量，安装孔11为阶梯型孔或喇叭形孔，安装孔11的内孔径大于安装孔11的外孔径，具体的，以采用阶梯型孔为例，安装孔11靠近连接管道1外管壁的孔体尺寸小于安装孔11靠近连接管道1内管壁的孔体尺寸，而滴水头3具有出水口32的部位则位于外侧的孔体中，在实际使用过程中，连接管道1内水压增大后，弹性挡板2能够在安装孔11靠近连接管道1内管壁的孔体中变形，而由于内侧的孔体所形成的空间较大，使得弹性挡板2具有足够的空间发生形变，从而可以增大弹性挡板2的变形量以带动滴水头3有效的伸出到安装孔11的外部以外露出出水口32。另外，针对连接管道1可以采用材质较硬的材料制成，例如可以采用PVC管等，以确保安装孔11具有足够的结构强度不会发生形变，同时，连接管道1的管壁厚度要满足在滴水头3回缩状态下，利用安装孔11的孔壁对出水口32进行遮挡，具体管壁厚度以及安装孔11的开孔尺寸，在此不做限制，本领域技术人员则可以根据实际情况进行设定和选择，以满足实际现场应用环境的要求；而弹性挡板2可以采用弹性橡胶或硅胶等具有弹性形变功能的材料制成，弹 性挡板2的边缘可以采用胶粘或热焊接的方式固定在连接管道1的管壁上，例如：可以采用热熔焊接或激光焊接的方式将弹性挡板2连接到连接管道1的管壁上，在此不做限制；针对滴水头3可以与弹性挡板2为一整体结构，或者，滴水头3也采用胶粘或热焊接的方式连接到弹性挡板2。而针对滴水头3上出水口32的结构形式可以采用圆形、条形或椭圆形开口，而开口的方式可以采用沿出水方向口径逐渐增大的方式，这样，即便出水口32被泥沙遮挡，在下次供水时，利用水压配合滴水头3的形变使得出水口32中的泥沙快速排出，以提高防堵能力。
进一步的，为了更加有效的提高防堵性能，滴水头3还包括：第一密封圈33，绕滴水头3的外周分布并位于出水口32的外侧。具体的，在滴水头3回缩到安装孔11中后，第一密封圈33将对出水口32的外侧进行密封封堵，这样，更加有效的阻挡外部的泥沙进入到出水口中，而针对第一密封圈33的封堵方式有多种，例如：如图1和图2所示，第一密封圈33设置在滴水头3的侧壁上，在滴水头3回缩到安装孔11中后，第一密封圈33也位于安装孔11中，并且，第一密封圈33的边缘贴靠在安装孔11的孔壁上；或者，如图5和图6所示，第一密封圈33设置在滴水头3的外端部，在滴水头3回缩到安装孔11中，第一密封圈33位于连接管道1的外部并第一密封圈33的边缘贴靠在连接管道1的外管壁上，并且，第一密封圈33将在外侧遮盖住滴水头3与安装孔11之间的间隙。优选的，滴水头3绕其外周还设置有第二密封圈34，第二密封圈34位于出水口32的内侧，从而使得出水口32位于第一密封圈33和第二密封圈34之间，而第二密封圈34的边缘将始终贴靠在安装孔11的孔壁上，这样，在进行供水滴灌的过程中，随着滴水头3逐渐伸出安装孔11，第二密封圈34也随之在安装孔11中移动，这样，即便有泥沙进入到安装孔11和滴水头3之间，再次供水滴灌时，移动的第二密封圈34也能够将泥沙向外推出并跟随出水口32输出的水排出，进一步的提高防堵性能。
更进一步的，为了减少因连接管道1中流动的水中含有杂质而造成滴水头3从内侧堵塞，还包括进水部件4，进水部件4中形成多条进水通道400，进水通道400的进水方向与连接管道1中的水流方向倾斜且反向设置；其中，进水部件4设置在通孔中，进水通道400连通进水腔体31，连接管道1中的水经由进水通道400进入到进水腔体31。具体的，如图1和图2所示，连接管道1中的水流方向为实线箭头所指示的方向，而进水通道400的进水方向为虚线箭头所指示的方向，进水方向相对于水流方向倾斜且反向设置，在供水过程中，水流流经进水通道400的进水口处将形成降压区，使得流入到进水通道400中的水的流速变慢，进水通道400的中水流所夹杂的杂质跟随水流流动过程中，在受惯性作用下，杂质不容易进入到进水通道400中，从而有效的减少因供水水流中杂质造成滴水头3堵塞的情况发生。其中，如图2和图7所示，进水部件4包括底盘41和插头42，底盘41中形成多条第一进水流道401，第一进水流道401的进水方向与连接管道1中的水流方向倾斜且反向设置；插头42中形成多条第二进水流道402，插头42设置在底盘41上，第二进水流道402与对应的第一进水流道401连接并形成进水通道400；其中，插头42插在通孔中，底盘41的边缘贴靠在弹性挡板2上。具体的，进水部件4由底盘41和插头42组装，底盘41和插头42可以为一整体结构，也可以采用分体式设计组装而成，插头42则插入到通孔中，而底盘41作为固定部件则连接在弹性挡板2上，而底盘41与弹性挡板2的连接方式可以采用胶粘或热焊接的方式，同时，对于进水部件4而言，根据需要可以采用硬质塑料制成，而为了增大弹性挡板2的形变量，则进水部件4也采用弹性材料，例如弹性橡胶或硅胶等。另外，为了避免凸出于连接管道1内壁进水部件4对水流造成较大的阻流，底盘41面向连接管道1中的水流方向的边缘设置有倾斜导流面411，倾斜导流面411能够顺着水流方向倾斜，以有效的导向水流经由倾斜导流面411顺畅的流动，同样的，弹性挡板2向连接管道1中的水流方向的边缘也可采用上述设置。
本发明还提供一种滴灌管，包括多根输水管，还包括上述滴灌连接头，滴灌连接头的连接管道连接在相邻的两根输水管之间。具体的，基于上述实施例中的滴灌连接头，在使用时，则将滴灌连接头连接在两根输水管之间，具体连接方式可以采用螺纹连接的方式也可以采用焊接的方式，而上述两种方式在实际使用过程中，当出现某一位置处的滴灌连接头发生损坏时，则可以拆下坏的滴灌连接头更换上新的，有效的提高了滴灌管的使用寿命。而通过控制供水水压的不同，便可以控制滴水头伸出的量，进而调节出水口的出水量，以达到调节滴灌的速度。另外，通过进一步的增大水压，还可以利用水压来对滴水头的出水口进行冲洗操作，在较大水压作用下，一方面出水口的出水量增大，另一方面出水口的形变量也增大，从而对于淤堵的出水口实现清理的目的。
与现有技术相比，本发明的优点和积极效果是：本发明提供的滴灌连接头及滴灌管，通过在相邻的两根输水管之间连接滴灌连接头形成滴灌管，滴灌连接头中的弹性挡板利用水压来产生形变，在水压作用下，弹性挡板朝向安装孔中变形以推动滴水头从连接管道的安装孔中伸出，这样，便可以使得出水口从安装孔中露出，水将经过出水口输出实现滴灌，而在供水结束后，连接管道中的水压降低，弹性挡板依靠自身弹性复位以带动滴水头回缩到安装孔中，此时，出水口被安装孔的孔壁遮挡住，可以有效的避免不供水情况下泥沙和植物根堵在出水口处而造成淤堵的情况发生，提高了滴灌管的防堵性能和使用可靠性。

Claims (9)

  1. 一种滴灌连接头，其特征在于，包括：
    连接管道，所述连接管道的管壁上开设有至少一个安装孔；
    弹性挡板，所述弹性挡板贴靠在所述连接管道的内管壁上并密封遮盖住所述安装孔，所述弹性挡板上与所述安装孔相对的部位还开设有通孔；
    滴水头，所述滴水头插在所述安装孔中并与所述弹性挡板连接，所述滴水头的中形成有连通所述通孔的进水腔体，所述滴水头的侧壁开设有与所述进水腔体连通的出水口；
    其中，所述弹性挡板在所述连接管道中水压的作用下朝向所述安装孔中变形并推动所述滴水头从所述安装孔中伸出，以使得所述出水口从所述安装孔中露出。
  2. 根据权利要求1所述的滴灌连接头，其特征在于，所述滴水头还包括：
    第一密封圈，所述第一密封圈绕所述滴水头的外周分布并位于所述出水口的外侧。
  3. 根据权利要求2所述的滴灌连接头，其特征在于，在所述弹性挡板未变形的情况下，所述第一密封圈贴靠在所述安装孔的孔壁上或所述第一密封圈绕所述安装孔的外围贴靠在所述连接管道的外壁上。
  4. 根据权利要求2所述的滴灌连接头，其特征在于，所述滴水头还包括：
    第二密封圈，所述第二密封圈绕所述滴水头的外周分布并位于所述出水口的内侧，所述第二密封圈的边缘贴靠在所述安装孔的孔壁上；
    其中，所述出水口位于所述第一密封圈和所述第二密封圈之间。
  5. 根据权利要求1所述的滴灌连接头，其特征在于，还包括：
    进水部件，所述进水部件中形成多条进水通道，所述进水通道的进水方向与所述连接管道中的水流方向倾斜且反向设置；
    其中，所述进水部件设置在所述通孔中，所述进水通道连通所述进水腔体，所述连接管道中的水经由所述进水通道进入到所述进水腔体。
  6. 根据权利要求5所述的滴灌连接头，其特征在于，所述进水部件包括：
    底盘，所述底盘中形成多条第一进水流道，所述第一进水流道的进水方向与所述连接管道中的水流方向倾斜且反向设置；
    插头，所述插头中形成多条第二进水流道，所述插头设置在所述底盘上，所述第二进水流道与对应的所述第一进水流道连接并形成所述进水通道；
    其中，所述插头插在所述通孔中，所述底盘的边缘贴靠在所述弹性挡板上。
  7. 根据权利要求5所述的滴灌连接头，其特征在于，所述底盘面向所述连接管道中的水流方向的边缘设置有倾斜导流面。
  8. 根据权利要求1所述的滴灌连接头，其特征在于，所述安装孔为阶梯型孔或喇叭形孔，所述安装孔的内孔径大于所述安装孔的外孔径。
  9. 一种滴灌管，包括多根输水管，其特征在于，还包括如权利要求1-8任一所述的滴灌连接头，所述滴灌连接头的连接管道连接在相邻的两根所述输水管之间。
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