WO2021128651A1 - 具有防堵功能的滴灌管及其加工方法 - Google Patents

具有防堵功能的滴灌管及其加工方法 Download PDF

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Publication number
WO2021128651A1
WO2021128651A1 PCT/CN2020/084075 CN2020084075W WO2021128651A1 WO 2021128651 A1 WO2021128651 A1 WO 2021128651A1 CN 2020084075 W CN2020084075 W CN 2020084075W WO 2021128651 A1 WO2021128651 A1 WO 2021128651A1
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WO
WIPO (PCT)
Prior art keywords
annular groove
water
drip irrigation
water outlet
supply pipe
Prior art date
Application number
PCT/CN2020/084075
Other languages
English (en)
French (fr)
Inventor
秦春明
秦晓汉
Original Assignee
秦春明
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201911366070.8A external-priority patent/CN111053021A/zh
Priority claimed from CN202010249724.5A external-priority patent/CN111264349A/zh
Application filed by 秦春明 filed Critical 秦春明
Publication of WO2021128651A1 publication Critical patent/WO2021128651A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151—Coating hollow articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining

Definitions

  • the invention relates to the technical field of agricultural irrigation, in particular to a drip irrigation pipe with anti-blocking function and a processing method thereof.
  • 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 is not supplied with water, the water outlet easily enters the debris and the roots of plants and becomes blocked, causing the dripper to fail, and the corresponding crops cannot get sufficient water supply and affect their growth. , Resulting in poor anti-blocking performance and low reliability of drip irrigation pipes.
  • the technical problem to be solved by the present invention is to provide a drip irrigation pipe with anti-blocking function and a processing method thereof, so as to improve the anti-blocking performance and use reliability of the drip irrigation pipe.
  • a drip irrigation pipe with anti-blocking function including:
  • a water supply pipe which is used to transport irrigation water
  • a cylindrical dripper the cylindrical dripper is provided with an annular groove, and the annular groove is provided with a water outlet hole penetrating the cylindrical dripper;
  • an elastic sleeve the elastic sleeve is sleeved on the cylindrical dripper and is located in the annular groove, and the elastic sleeve covers the water outlet hole;
  • the cylindrical dripper is arranged in the water supply pipe, and a water outlet matched with the cylindrical dripper is opened on the water supply pipe, and the water outlet is located outside the annular groove.
  • a plurality of the water outlets are arranged on the periphery of each of the cylindrical drippers, and the plurality of water outlets are distributed around the annular groove.
  • the thickness dimension of the elastic sleeve is not greater than the depth dimension of the annular groove.
  • the width dimension of the water outlet is larger than the width dimension of the annular groove.
  • a concave structure or a convex structure is also formed on the circumferential surface of the cylindrical dripper on the side of the annular groove.
  • a plurality of the water outlet holes are provided in the annular groove.
  • edge of the annular groove is provided with an inner chamfer
  • the present invention also provides a method for processing the above-mentioned drip irrigation pipe with anti-blocking function, including:
  • Step 1 Put the elastic sleeve on the cylindrical dripper, and make the elastic sleeve tightly fit in the annular groove;
  • Step 2 In the process of extrusion molding of the water supply pipe, the cylindrical dripper is embedded in the water supply pipe that is extruded;
  • Step 3 Perform opening treatment on the wall of the water supply pipe, and make the water outlet span across the corresponding annular groove.
  • the step 1 further includes: after the elastic sleeve is sleeved on the cylindrical dripper, applying an anti-sticking coating on the outside of the elastic sleeve.
  • the advantages and positive effects of the present invention are: the drip irrigation pipe with anti-blocking function provided by the present invention, by setting the annular groove on the cylindrical dripper to place the elastic sleeve, the elastic sleeve can be tightly wrapped in The cylindrical dripper covers the water outlet hole, and the corresponding opening on the outside of the annular groove on the water supply pipe forms a water outlet. When there is water flowing in the water supply pipe, the elasticity outside the water outlet hole will be pushed out under the action of water pressure. The water in the water supply pipe is output from the outlet hole and flows out through the gap between the elastic sleeve and the annular groove to achieve drip irrigation.
  • the elastic sleeve When the water pressure is low and no water is supplied, the elastic sleeve can be tightly attached to the outlet hole In order to prevent the water outlet from being blocked by the sediment and root system; at the same time, because the diameter of the water outlet is larger than that of the water outlet, when the water is not supplied, the mud and sand will block the water outlet. However, when water is supplied, The water flowing out of the pipe can flush away the sediment at the water outlet to meet the requirements of normal drip irrigation and to improve the anti-blocking performance and reliability of the drip irrigation pipe. Moreover, compared with the root system, due to the larger size of the water outlet, the growing root system will not block the water outlet.
  • Fig. 1 is a schematic structural diagram of Embodiment 1 of a drip irrigation pipe with anti-blocking function according to the present invention
  • FIG. 2 is an exploded view of Embodiment 1 of the drip irrigation pipe with anti-blocking function according to the present invention
  • Embodiment 3 is a cross-sectional view of Embodiment 1 of the drip irrigation pipe with anti-blocking function according to the present invention.
  • Fig. 4 is a partial enlarged schematic diagram of area A in Fig. 3;
  • Figure 5 is an exploded view of Embodiment 2 of the drip irrigation pipe with anti-blocking function according to the present invention.
  • Embodiment 6 is a cross-sectional view of Embodiment 2 of the drip irrigation pipe with anti-blocking function according to the present invention.
  • Fig. 7 is a partial enlarged schematic diagram of area B in Fig. 6;
  • FIG. 8 is a perspective view of the cylindrical dripper in the second embodiment of the anti-blocking drip irrigation water supply pipe for agriculture of the present invention.
  • Fig. 9 is a front view of the cylindrical dripper in the second embodiment of the anti-clogging drip irrigation water supply pipe for agriculture of the present invention.
  • the drip irrigation pipe with anti-blocking function in this embodiment includes: a water supply pipe 1, a cylindrical dripper 2 and an elastic sleeve 3.
  • the water supply pipe 1 is used to transport irrigation water;
  • the cylindrical dripper 2 is provided There is an annular groove 21 in which is provided a water outlet 22 penetrating the cylindrical dripper 2;
  • the elastic sleeve 3 is sleeved on the cylindrical dripper 2 and is located in the annular groove 21, and the elastic sleeve 3 covers the water outlet 22;
  • the cylindrical dripper 2 is arranged in the water supply pipe 1, and the water supply pipe 1 is provided with a water outlet 11 matching the cylindrical dripper 2, and the water outlet 11 is located outside the annular groove 21.
  • the water supply pipe 1 can be laid on the ground or buried below the ground.
  • the water supply pipe 1 is connected with a water supply device (for example, a water supply pump, etc.), and the water supply device supplies a certain pressure of water to the water supply pipe 1 to achieve drip irrigation.
  • a water supply device for example, a water supply pump, etc.
  • the water in the water supply pipe 1 uses water pressure to push up the elastic sleeve 3 provided on the cylindrical dripper 2, so that the elastic sleeve 3 is deformed and then the elastic sleeve 3 and the annular groove 21 A gap is formed between the bottom of the groove.
  • the water output from the water outlet 22 can flow out through the gap between the elastic sleeve 3 and the annular groove 21, and finally the water flows to the outside of the water supply pipe 1 through the water outlet 11 to achieve drip irrigation.
  • the elastic sleeve 3 When the water is stopped or the water pressure is low, the elastic sleeve 3 will tightly wrap the outside of the cylindrical dripper 2 under the action of its own elastic force, and then block the water outlet 22. In this way, the outlet hole of the general drip irrigation head can be prevented from being blocked by mud due to the negative pressure inhaled by the negative pressure caused by the water stop, and it can also be avoided that the roots of the plant grow into the outlet hole and cause root blockage. Moreover, under the elastic action of the elastic sleeve 3, the water supply pressure can be increased in a short time, so that the gap between the elastic sleeve 3 and the annular groove 21 is significantly increased, and the water flow is increased in a short time, which can flush out some blockages. Compared with the turbulent flow channel of the general drip irrigation head, it can avoid the dirty block and has a better anti-blocking ability.
  • the aperture of the water outlet 22 is small, it is easy to be blocked, and the elastic sleeve 3 is used for protection, which can effectively improve the anti-blocking performance.
  • the water outlet 11 since the aperture of the water outlet 11 is relatively large, the water outlet 11 will not be completely blocked by soil. Specifically, when the water is stopped, for the water supply pipe 1 buried in the ground, the water outlet 11 will be blocked by soil, and when water is supplied, the soil at the water outlet 11 can be washed away under the action of water pressure to achieve Normal drip irrigation. As for the water supply pipe 1 laid on the ground, the water outlet 11 is less likely to be blocked by soil.
  • the sediment will block the water outlet.
  • the water flowing from the water pipe can also remove the mud at the water outlet 11.
  • the sand is flushed to meet the requirements of normal drip irrigation and to improve the anti-blocking performance and reliability of the agricultural anti-blocking drip irrigation water supply pipe.
  • the growing root system will not block the water outlet.
  • a plurality of water outlets 11 are provided on the periphery of each cylindrical dripper 2, and the plurality of water outlets 11 are distributed around the annular groove 21.
  • the water supply pipe 1 is provided with multiple water outlets 11 on the outer circumference of each cylindrical dripper 2.
  • multiple water outlets 11 are communicated with each other inside the water supply pipe 1.
  • a plurality of water outlet holes 22 may be provided in the annular groove 21.
  • the cylindrical dripper 2 is simultaneously built into the water supply pipe 1 that has just been extruded. After the water supply pipe 1 is cooled and solidified, the cylindrical dripper 2 is firmly installed in the water supply pipe 1.
  • the above-mentioned extrusion method of the supply tube can be a drip irrigation tube processing method equipped with a cylindrical dripper in the prior art, which is not limited and repeated here.
  • the thickness dimension of the elastic sleeve 3 is not greater than the depth dimension of the annular groove 21.
  • the elastic sleeve 3 can be protected by the annular groove 21, so that the opening cutter of the opening will not affect the elasticity. Set of 3 causes damage.
  • the thickness of the elastic sleeve 3 selected is smaller than the depth of the annular groove 21. In this way, during the extrusion process of the water supply pipe 1, the inner wall of the water supply pipe 1 is prevented from contacting with the elastic sleeve 3 to cause adhesion. Improve the yield of products.
  • the width dimension of the elastic sleeve 3 is also designed to be equivalent to the width dimension of the annular groove 21, so that after the elastic sleeve 3 is pushed up by the water pressure, the water flow can flow out smoothly through the end surface of the elastic sleeve 3, and it can also start at the same time. To the effect of steady flow.
  • the width dimension of the water outlet 11 is greater than the width dimension of the annular groove 21. In this way, when opening, the opening portion of the water supply pipe 1 can be evenly supported by the two sides of the annular groove 21 to improve the quality of the opening.
  • the elastic sleeve 3 located at the water outlet 11 can avoid the restraint of the wall of the water supply pipe 1 under the action of water pressure, which is more conducive to the elastic sleeve 3 at the water outlet. Deformation occurs at 11 places so that water flows out from the outlet 11.
  • the elastic sleeve 3 can be made of elastic materials such as silica gel or rubber, and the above-mentioned materials can also meet the requirements of being buried in the ground for a long time and immersed in water. Has a long service life.
  • the cylindrical dripper 2 can be made of plastic material and processed by injection molding.
  • the material of the water supply pipe 1 can be PP or PE.
  • the size range of the water outlet 22 can be 0.5mm ⁇ 2mm, the size of the water outlet 11 can be 4mm ⁇ 6mm, the width of the annular groove 21 is 3mm-5mm, and the depth of the annular groove 21 It is 1mm ⁇ 2mm.
  • the surface of the cylindrical dripper 2 is also formed with a concave structure or a convex structure.
  • the pattern structure 23 is located on one side of the annular groove 21 or On both sides. Specifically, by forming a pattern structure on the surface of the cylindrical dripper 2, during the extrusion process of the water supply pipe 1, the pattern structure 23 can be more closely connected with the inner wall of the water supply pipe 1 to improve the reliability of the assembly of the cylindrical dripper 2. Sex.
  • the edge of the annular groove 21 is provided with an inner chamfer 211.
  • the edge of the annular groove 21 expands in the outward direction to form an inner chamfer 211.
  • the inner chamfer 211 facilitates the expansion of the elastic ring 3 to increase the water output, and on the other hand, it facilitates the elastic ring 3 to follow the inner chamfer.
  • the chamfer 211 is smoothly retracted into the annular groove 21.
  • the punching tool punches the wall of the water supply pipe 1, and the cylindrical dripper 2 avoids the punching tool through the inner chamfer 211 to prevent the punching tool from injuring the cylinder
  • the dripper 2 and the elastic ring 3 also make the shape of the water outlet 11 more regular.
  • the inner chamfer 211 By providing the inner chamfer 211 on the edge of the annular groove 21, the inner chamfer can avoid the punching tool when punching the water supply pipe. On the one hand, it prevents the cylindrical dripper from being damaged by the tool, and on the other hand, The shape of the water outlet is more regular to improve the yield of the product.
  • the annular groove 21 is provided with at least one pair of coaxially arranged water outlet holes 22.
  • the mold parts are coaxially arranged on the two sides of the annular groove 21 to form a pair of coaxially arranged water outlet holes 22.
  • the two ports of the cylindrical dripper 2 are provided with inner chamfers 25.
  • the present invention also provides a method for processing the above-mentioned drip irrigation pipe with anti-blocking function, including:
  • Step 1 Put the elastic sleeve on the cylindrical dripper, and make the elastic sleeve tightly fit in the annular groove. Specifically, the operator first installs the elastic sleeve into the annular groove, and then puts the cylindrical dripper assembled with the elastic sleeve into the processing equipment for standby.
  • Step 2 In the process of extrusion molding of the water supply pipe, the cylindrical dripper is embedded in the extrusion molding water supply pipe. Specifically, in the process of extruding the water supply pipe through the extruder, the cylindrical dripper is embedded in the extruded water supply pipe.
  • Step 3 Perform opening treatment on the wall of the water supply pipe, and make the water outlet span across the annular groove of the corresponding cylindrical dripper.
  • the step 1 further includes: after the elastic sleeve is sleeved on the cylindrical dripper, an anti-sticking coating is applied to the outside of the elastic sleeve.
  • an anti-sticking coating can be used during the extrusion process of the water supply pipe. Even if the inner wall of the water supply pipe in a hot melt state touches the elastic sleeve, the two will not stick together. .
  • the anti-sticking coating can be made of materials such as a release agent, which is not limited and repeated here.
  • the advantages and positive effects of the present invention are: the drip irrigation pipe with anti-blocking function provided by the present invention, by setting the annular groove on the cylindrical dripper to place the elastic sleeve, the elastic sleeve can be tightly wrapped in The cylindrical dripper covers the water outlet hole, and the corresponding opening on the outside of the annular groove on the water supply pipe forms a water outlet. When there is water flowing in the water supply pipe, the elasticity outside the water outlet hole will be pushed out under the action of water pressure. The water in the water supply pipe is output from the outlet hole and flows out through the gap between the elastic sleeve and the annular groove to achieve drip irrigation.
  • the elastic sleeve When the water pressure is low and no water is supplied, the elastic sleeve can be tightly attached to the outlet hole In order to prevent the water outlet from being blocked by the roots of sediment and plants; at the same time, since the diameter of the water outlet is larger than that of the water outlet, in the state of no water supply, the mud and sand will block the water outlet.
  • the water flowing out of the water supply pipe can flush away the sediment at the water outlet to meet the requirements of normal drip irrigation and improve the anti-blocking performance and reliability of the drip irrigation pipe.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
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Abstract

一种具有防堵功能的滴灌管及其加工方法，滴灌管包括：供水管（1），供水管（1）用于输送灌溉用水；圆柱滴头（2），圆柱滴头（2）上设置有环形凹槽（21），环形凹槽（21）中设置有贯穿圆柱滴头（2）的出水孔（22）；弹性套（3），弹性套（3）套在圆柱滴头（2）上并位于环形凹槽（21）中，弹性套（3）遮盖住出水孔（22）；其中，圆柱滴头（2）设置在供水管（1）中，供水管（1）上开设有与圆柱滴头（2）匹配的出水口（11），出水口（11）位于环形凹槽（21）的外侧。加工方法包括：在供水管（1）挤出成型的过程中，圆柱滴头（2）内嵌在挤出成型的供水管（1）中。

Description

具有防堵功能的滴灌管及其加工方法 技术领域
本发明涉及农业灌溉技术领域，尤其涉及一种具有防堵功能的滴灌管及其加工方法。
 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。
 技术问题
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。
 技术解决方案
本发明所要解决的技术问题是：提供一种具有防堵功能的滴灌管及其加工方法，实现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：一种具有防堵功能的滴灌管，包括：
供水管，所述供水管用于输送灌溉用水；
圆柱滴头，所述圆柱滴头上设置有环形凹槽，所述环形凹槽中设置有贯穿所述圆柱滴头的出水孔；
弹性套，所述弹性套套在所述圆柱滴头上并位于所述环形凹槽中，所述弹性套遮盖住所述出水孔；
其中，所述圆柱滴头设置在所述供水管中，所述供水管上开设有与所述圆柱滴头匹配的出水口，所述出水口位于所述环形凹槽的外侧。
进一步的，每个所述圆柱滴头的外围设置有多个所述出水口，多个所述出水口绕所述环形凹槽分布。
进一步的，所述弹性套的厚度尺寸不大于所述环形凹槽的深度尺寸。
进一步的，所述出水口的宽度尺寸大于所述环形凹槽的宽度尺寸。
进一步的，所述圆柱滴头的圆周面上位于所述环形凹槽的侧部还形成有凹陷结构或凸起结构。
进一步的，所述环形凹槽中设置有多个所述出水孔。
进一步的，所述环形凹槽中开设有至少一对同轴设置的所述出水孔。
进一步的，所述环形凹槽的边缘设置有内倒角
本发明还提供一种上述具有防堵功能的滴灌管的加工方法，包括：
步骤1、将弹性套套在圆柱滴头上，并使得弹性套紧套在环形凹槽中；
步骤2、在供水管挤出成型的过程中，圆柱滴头内嵌在挤出成型的供水管中；
步骤3、在供水管的管壁进行开口处理，并使得出水口横跨在对应的环形凹槽上。
进一步的，所述步骤1还包括：在将弹性套套在圆柱滴头上后，在弹性套外涂抹防粘涂层。
 有益效果
与现有技术相比，本发明的优点和积极效果是：本发明提供的具有防堵功能的滴灌管，通过在圆柱滴头上设置环形凹槽来放置弹性套，弹性套能够紧密的包裹在圆柱滴头上并遮挡住出水孔，而在供水管上在环形凹槽的外侧对应的开口形成出水口，在供水管内有水流动时，在水压的作用下将顶开出水孔外的弹性套，使得供水管中的水从出水孔输出并经由弹性套与环形凹槽之间的间隙流出，以实现滴灌，而当水压较低不供水时，弹性套又能够紧密的贴在出水孔的外部，进而避免泥沙和根系将出水孔堵塞；同时，由于出水口的口径相对于出水孔较大，在不供水的状态下，泥沙将堵塞出水口，但是，在供水时，从供水管流出的水又可以将出水口处的泥沙冲开，以满足正常滴灌的要求，实现提高滴灌管的防堵性能和使用可靠性。并且，相对于根系而言，由于出水口的尺寸较大，生长的根系则不会对出水口造成堵塞。
 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为本发明具有防堵功能的滴灌管实施例一的结构示意图；
图2为本发明具有防堵功能的滴灌管实施例一的爆炸图；
图3为本发明具有防堵功能的滴灌管实施例一的剖视图；
图4为图3中A区域的局部放大示意图；
图5为本发明具有防堵功能的滴灌管实施例二的爆炸图；
图6为本发明具有防堵功能的滴灌管实施例二的剖视图；
图7为图6中B区域的局部放大示意图；
图8为本发明农业用防堵滴灌供水管实施例二中圆柱滴头的立体图；
图9为本发明农业用防堵滴灌供水管实施例二中圆柱滴头的主视图。
 本发明的最佳实施方式
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。
实施例一
如图1-图4所示，本实施例具有防堵功能的滴灌管，包括：供水管1、圆柱滴头2和弹性套3，供水管1用于输送灌溉用水；圆柱滴头2上设置有环形凹槽21，环形凹槽21中设置有贯穿圆柱滴头2的出水孔22；弹性套3套在圆柱滴头2上并位于环形凹槽21中，弹性套3遮盖住出水孔22；其中，圆柱滴头2设置在供水管1中，供水管1上开设有与圆柱滴头2匹配的出水口11，出水口11位于环形凹槽21的外侧。
具体而言，在实际使用过程中，供水管1可以铺设在地表，也可以埋在地面以下。供水管1与供水设备（例如：供水泵等）连接，供水设备向供水管1中供给一定压力的水来实现滴灌。
其中，在实际灌溉过程中，供水管1中的水利用水压将圆柱滴头2上套设置的弹性套3顶起，以使得弹性套3发生形变进而在弹性套3与环形凹槽21的槽底部之间形成间隙。这样，从出水孔22中输出的水便可以经由弹性套3与环形凹槽21之间的间隙向外流出，最终水经过出水口11流到供水管1的外部以实现滴灌。
而在停水状态下或水压较低时，弹性套3在自身弹力作用下将重新紧密的包裹在圆柱滴头2外部，进而将出水孔22遮挡住。这样，既可以避免一般滴灌头的出水孔由于停水造成的负压吸入泥沙而造成泥堵，也可以避免植物的根生长进入出水孔而产生根堵。并且，在弹性套3的弹性作用下，还可以通过短时间加大供水压力，让弹性套3与环形凹槽21之间的间隙明显加大，同时水流短时间加大，可以冲洗掉一些堵塞物，比一般的滴灌头的紊流通道更能避免脏堵，具有更好的防堵能力。
由于出水孔22的孔径较小极易被堵塞，通过弹性套3进行保护，可以有效的提高防堵的性能。而对于出水口11而言，由于出水口11的孔径较大，出水口11不会被泥土完全的堵塞。具体的，在停水时，对于埋在地下的供水管1，出水口11会被泥土封堵住，而在供水时，在水压作用下又可以将出水口11处的泥土冲开，实现正常的滴灌。而对于铺设在地表的供水管1，出水口11更不易被泥土堵住。
同时，由于出水口11的口径相对于出水孔22较大，在不供水的状态下，泥沙将堵塞出水口，但是，在供水时，从水管流出的水又可以将出水口11处的泥沙冲开，以满足正常滴灌的要求，实现提高农业用防堵滴灌供水管的防堵性能和使用可靠性。并且，相对于根系而言，由于出水口11的尺寸较大，生长的根系则不会对出水口造成堵塞。
进一步的，每个圆柱滴头2的外围设置有多个出水口11，多个出水口11绕环形凹槽21分布。具体的，供水管1在每个圆柱滴头2的外周圈上开设多个出水口11，通过布置多个出水口11，一方面可以在圆周方向上出水，另一方面，在多个出水口11之间在供水管1内部相互连通，在出水时，对于覆盖在出水口11处的泥沙，由于出水口11的尺寸较大，出水口11处的泥沙能够跟随水顺畅的排出。同样的，为了使得周圈出水均匀，则可以在环形凹槽21中设置有多个出水孔22。
对于供水管1而言，通常采用挤出的方式加工而成，而在供水管1挤出过程中，圆柱滴头2便同时内置于刚挤出的供水管1中。供水管1降温固化后，使得圆柱滴头2牢固的安装在供水管1中。上述所述供述管的挤出方式，可以采用现有技术中配置圆柱滴头的滴灌管加工方式，在此不做限制和赘述。
优选地，为了在加工过程中，方便供水管1进行开口以形成出水口11，则弹性套3的厚度尺寸不大于环形凹槽21的深度尺寸。具体的，将弹性套3安装到环形凹槽21中后，在对供水管1进行开口的过程中，通过环形凹槽21能够对弹性套3进行保护，以使得开口的开口刀具不会对弹性套3造成损伤。而在实际加工时，则选用的弹性套3的厚度小于环形凹槽21的深度，这样，在供水管1挤出过程中，减少供水管1的内壁与弹性套3接触而发生黏连，以提高产品的成品率。
而针对弹性套3的宽度尺寸也设计为与环形凹槽21的宽度尺寸相当，这样，使得弹性套3被水压顶起后，水流能够经由弹性套3的端面顺畅的流出，又能同时起到稳流作用。
同时，对于出水口11的宽度尺寸则大于环形凹槽21的宽度尺寸。这样，开口时，供水管1的开口部位能被环形凹槽21的两侧部均衡的支撑，以提高开口的质量。同时，由于出水口11延伸到环形凹槽21的两侧部，位于出水口11处的弹性套3在水压作用下能够避让开供水管1壁的束缚，更有利于弹性套3在出水口11处发生形变，以使得水从出水口11处流出。
在材料选择上，则在满足弹性套3的弹性要求下，弹性套3可以采用硅胶或橡胶等弹性材质制成，且上述材料也能够满足在长时间埋在地下和被水浸泡的情况下，具有较长的使用寿命。而圆柱滴头2则可以采用塑料材料并通过注塑的方式加工而成。供水管1的材质可以采用PP或PE。
而在尺寸的选取上，对于出水孔22的尺寸范围可以在0.5mm~2mm，出水口11的尺寸可以在4mm~6mm，而环形凹槽21的宽度在3mm-5mm，环形凹槽21的深度为1mm~2mm。
而在实际使用过程中，另外，对于滴灌速度的控制，仅需要简单的控制供水管1中的水压大小。当需要增大滴灌量时，则调大水压，则使得弹性套3与环形凹槽21之间的间隙增大，并且，出水孔22的出水量增多，以增大滴灌量；反之，则调小水压，则使得弹性套3与环形凹槽21之间的间隙变小，出水孔22的出水量减少，以减小滴灌量。以采用1mm直径的出水孔22在每个凹槽中设置两个、5mm直径的出水口11对应设置三个和1.5mm厚的硅胶制成的弹性套3为例，在16mm直径供水管1内的水压为0.06Mpa时，三个出水口11的出水量可以达到9ml/分钟；而当调节水压至0.08Mpa时，三个出水口11的出水量可以达到20ml/分钟。
进一步的，圆柱滴头2的表面还形成有凹陷结构或凸起结构，以在圆柱滴头2的圆周面上形成凹陷的花纹结构23为例，花纹结构23位于环形凹槽21的一侧或两侧。具体的，通过在圆柱滴头2的表面形成花纹结构，在供水管1挤出过程中，花纹结构23能够与供水管1的内壁更加紧密的连接在一起，以提高圆柱滴头2的组装可靠性。
实施例二
如图5-图9所示，基于上述实施例公开的技术方案，可选的，所述环形凹槽21的边缘设置有内倒角211。具体的，环形凹槽21的边缘沿向外方向扩出以形成内倒角211，一方面内倒角211便于弹性圈3扩张时增大出水量，另一方面便于弹性圈3能够沿着内倒角211顺利回缩到环形凹槽21中。同时，在对供水管1进行打孔过程中，打孔工具对供水管1的管壁进行打孔，而圆柱滴头2通过内倒角211避让开打孔工具，避免打孔工具伤及圆柱滴头2和弹性圈3，并且，使得出水口11的形状更规则。
通过在环形凹槽21的边缘设置有内倒角211，可以在对供水管进行打孔时，通过内倒角避让开打孔的刀具，一方面避免圆柱滴头被刀具破损，另一方面使得出水口的外形更为规整，以提高产品的成品率。
进一步的，为了方便加工便于脱模，则环形凹槽21中开设有至少一对同轴设置的出水孔22，对于圆柱滴头2在环形凹槽21中形成的出水孔22，在加工过程中，则在环形凹槽21的两侧区域同轴设置模具部件，以形成一对同轴设置的出水孔22，这样，在脱模时，也方便模具部件从出水孔22中脱离出，降低模具的结构复杂程度并降低制造成本。同样的，为了方便脱模，所述圆柱滴头2的两端口设置有内倒角25。
实施例三
本发明还提供一种上述具有防堵功能的滴灌管的加工方法，包括：
步骤1、将弹性套套在圆柱滴头上，并使得弹性套紧套在环形凹槽中。具体的，操作人员先将弹性套安装到环形凹槽中，然后，将组装有弹性套的圆柱滴头上放入到加工设备中备用。
步骤2、在供水管挤出成型的过程中，圆柱滴头内嵌在挤出成型的供水管中。具体的，供水管通过挤出机挤出的过程中，使得圆柱滴头内嵌在挤出的供水管中。
步骤3、在供水管的管壁进行开口处理，并使得出水口横跨在对应的圆柱滴头的环形凹槽上。
优选地，为了避免或减少弹性套与供述管内部黏连，所述步骤1还包括：在将弹性套套在圆柱滴头上后，在弹性套外涂抹防粘涂层。具体的，弹性套的外表面涂覆有防粘涂层，防粘涂层能够在供水管挤出过程中，热熔状态的供水管内壁即便接触弹性套，也不会出现两者黏在一起。而防粘涂层可以采用脱模剂等材料，在此不做限制和赘述。
与现有技术相比，本发明的优点和积极效果是：本发明提供的具有防堵功能的滴灌管，通过在圆柱滴头上设置环形凹槽来放置弹性套，弹性套能够紧密的包裹在圆柱滴头上并遮挡住出水孔，而在供水管上在环形凹槽的外侧对应的开口形成出水口，在供水管内有水流动时，在水压的作用下将顶开出水孔外的弹性套，使得供水管中的水从出水孔输出并经由弹性套与环形凹槽之间的间隙流出，以实现滴灌，而当水压较低不供水时，弹性套又能够紧密的贴在出水孔的外部，进而避免泥沙和植物的根系将出水孔堵塞；同时，由于出水口的口径相对于出水孔较大，在不供水的状态下，泥沙将堵塞出水口，但是，在供水时，从供水管流出的水又可以将出水口处的泥沙冲开，以满足正常滴灌的要求，实现提高滴灌管的防堵性能和使用可靠性。

Claims (10)

  1. 一种具有防堵功能的滴灌管，其特征在于，包括：
    供水管，所述供水管用于输送灌溉用水；
    圆柱滴头，所述圆柱滴头上设置有环形凹槽，所述环形凹槽中设置有贯穿所述圆柱滴头的出水孔；
    弹性套，所述弹性套套在所述圆柱滴头上并位于所述环形凹槽中，所述弹性套遮盖住所述出水孔；
    其中，所述圆柱滴头设置在所述供水管中，所述供水管上开设有与所述圆柱滴头匹配的出水口，所述出水口位于所述环形凹槽的外侧。
  2. 根据权利要求1所述的具有防堵功能的滴灌管，其特征在于，每个所述圆柱滴头的外围设置有多个所述出水口，多个所述出水口绕所述环形凹槽分布。
  3. 根据权利要求1所述的具有防堵功能的滴灌管，其特征在于，所述弹性套的厚度尺寸不大于所述环形凹槽的深度尺寸。
  4. 根据权利要求1所述的具有防堵功能的滴灌管，其特征在于，所述出水口的宽度尺寸大于所述环形凹槽的宽度尺寸。
  5. 根据权利要求1所述的具有防堵功能的滴灌管，其特征在于，所述圆柱滴头的圆周面上位于所述环形凹槽的侧部还形成有凹陷结构或凸起结构。
  6. 根据权利要求1所述的具有防堵功能的滴灌管，其特征在于，所述环形凹槽中设置有多个所述出水孔。
  7. 根据权利要求6所述的具有防堵功能的滴灌管，其特征在于，所述环形凹槽中开设有至少一对同轴设置的所述出水孔。
  8. 根据权利要求1-7任一项所述的具有防堵功能的滴灌管，其特征在于，所述环形凹槽的边缘设置有内倒角。
  9. 一种如权利要求1-8任一所述的具有防堵功能的滴灌管的加工方法，其特征在于，包括：
    步骤1、将弹性套套在圆柱滴头上，并使得弹性套紧套在环形凹槽中；
    步骤2、在供水管挤出成型的过程中，圆柱滴头内嵌在挤出成型的供水管中；
    步骤3、在供水管的管壁进行开口处理，并使得出水口横跨在对应的环形凹槽上。
  10. 根据权利要求9所述的加工方法，其特征在于，所述步骤1还包括：
    在将弹性套套在圆柱滴头上后，在弹性套外涂抹防粘涂层。
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CN1270760A (zh) * 2000-02-01 2000-10-25 青岛化工学院高分子工程材料研究所 渗滴管及其生产设备
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