WO2017201637A1 - 一种防热回流的除草机用喷嘴 - Google Patents

一种防热回流的除草机用喷嘴 Download PDF

Info

Publication number
WO2017201637A1
WO2017201637A1 PCT/CN2016/000289 CN2016000289W WO2017201637A1 WO 2017201637 A1 WO2017201637 A1 WO 2017201637A1 CN 2016000289 W CN2016000289 W CN 2016000289W WO 2017201637 A1 WO2017201637 A1 WO 2017201637A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
air outlet
cover body
bottom end
support portion
Prior art date
Application number
PCT/CN2016/000289
Other languages
English (en)
French (fr)
Inventor
杨伟明
韩挺
Original Assignee
杨伟明
韩挺
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
Application filed by 杨伟明, 韩挺 filed Critical 杨伟明
Publication of WO2017201637A1 publication Critical patent/WO2017201637A1/zh

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M21/00—Apparatus for the destruction of unwanted vegetation, e.g. weeds

Definitions

  • the invention relates to the technical field of weeding machines, in particular to a nozzle for preventing heat backflow on a weeding machine.
  • the methods of weed control in farmland mainly include mechanical, chemical, manpower, static electricity, and biological weeding.
  • chemical weeding has made it a major method of weeding, but the widespread use of chemical weeding methods has also led to a series of agricultural environmental degradation and food security problems. Therefore, non-chemical weeding methods are beginning to receive more and more attention.
  • mechanical weeding, hot weeding, etc. mechanical weeding can lead to serious water evaporation loss, and should be used with caution in places where water resources are scarce.
  • the principle is to use grasses that are heated to remove grass.
  • the Chinese patent CN204070269U discloses a novel hot air weeding and pest control device, which comprises an electric control box, a heating unit and a draft unit, and the heating unit comprises a box body and a resistance wire disposed in the box body,
  • the air guiding unit comprises a wind guiding cylinder, an exhaust fan fixed in the air guiding cylinder, and a flared opening at one end communicating with the exhaust port of the air guiding cylinder and the other end facing the ground. After the heating unit is turned on, the electric resistance wire is inside the box.
  • the air is heated, and when heated to the required temperature, the air-inducing unit is turned on, the heat is discharged to the air-conducting cylinder through the air blower, and the heat and the wind are discharged to the ground through the flared opening through the exhaust fan.
  • the air outlet portion of the air guiding unit is only a flared opening, and the hot air cannot be treated after the hot air destroys the weeds. Therefore, when the weeds are destroyed, the hot air tends to flow back upward, causing the device to be overheated and damaged; in addition, the hot air tends to be discharged from the lower edge of the flared opening, thereby causing the surrounding non-weed vegetation to be destroyed, thereby Unnecessary losses and even threats to the safety of users.
  • the technical problem to be solved by the present invention is to provide a nozzle for a weeding machine that uses heat and backflow which is safe and has improved herbicidal efficiency in view of the problems of the prior art described above.
  • a nozzle for a lawn machine for preventing heat backflow comprising a cover body and a connecting portion for connecting with the body of the weeder, the connecting portion being disposed at the top of the cover body,
  • the bottom of the cover body is provided with a folding portion, and the cover body, the connecting portion and the folding portion are integrally connected;
  • the folding portion includes a circle formed by extending from the outer side of the bottom surface of the cover body to the outside. a folding surface, and a support portion extending downward from an outer edge of the folding surface, the folding surface is provided with at least one air outlet hole, and a distance between the air outlet hole and a bottom end surface of the support portion is less than or Equal to 2cm.
  • the hot air flow entering the nozzle can be more smoothly guided to the air outlet hole on the folding surface, and the bottom inner side of the cover body is downward.
  • the side extends to form an annular retaining ring.
  • the longitudinal section of the cover body has a frustoconical shape which is arranged to be small and large.
  • the bottom end surface of the support portion is inclined with respect to a horizontal plane, and the angle of inclination is 0 to 30°. Preferably, it is 15°.
  • the distance between the air outlet and the bottom end surface of the support portion is 1 cm. It has been proved by experiments that when the distance between the air outlet and the bottom end surface of the nozzle is 1 cm, the hot airflow encounters the ground and blocks back to the inside of the nozzle, and rapidly spreads to both sides, and then immediately discharges the nozzle from a plurality of close-out air outlets. Beyond that, it is very effective.
  • the hot air flow can be cooled while being discharged, avoiding damage to the surrounding vegetation to be retained, and ensuring the safety of the user.
  • the folding portion and the air outlet form a blocking member for preventing the return of the hot air flow, which avoids the situation that the hot air flow returns straight from the inside of the nozzle to the inside of the lawn mower body, which causes the inside of the lawn mower body to be overheated and damaged.
  • Figure 1 is a schematic view of a weeder to which the nozzle of the present invention is applied;
  • FIG. 2 is a schematic structural view of a nozzle according to an embodiment of the present invention.
  • Figure 3 is a cross-sectional view of a nozzle in accordance with an embodiment of the present invention.
  • FIG. 1 it is a schematic structural view of a weeding machine to which the nozzle of the present invention is applied.
  • the weeding machine includes a rod portion 1 for easy grip, a lawn mower body 2 connected to one end of the rod portion 1, and a nozzle 3 connected to an air outlet of the head of the lawn mower body 2.
  • a heating device is disposed in the lawn mower body 2, and a hot air flow generated by heating by the heating device is injected into the inner cavity of the nozzle 3, and is ejected through the nozzle 3 to a portion where weeds are removed, and the hot air stream heats the weeds. It is destroyed in a short period of time to complete the weeding.
  • the nozzle 3 includes a cover 31, a connecting portion 32 provided at the top of the cover 31, and a folded portion 33 provided at the bottom of the cover 31, the cover 31, the connecting portion 32 and the fold
  • the inside of the portion 33 is hollow to form a cavity and is integrally connected to each other.
  • the top surface opening of the cover body 31 is smaller than the bottom surface opening, and the longitudinal section thereof has a frusto-conical shape which is large and small, so as to ensure the flow rate of the hot air and expand the range of the hot air action.
  • the inner side surface of the bottom of the cover 31 extends downward to form an annular retaining ring 311.
  • the connecting portion 32 is for connecting to the head of the weeder body 2.
  • the folded portion 33 includes a ring-folding surface 331 formed to extend outward from the bottom outer side of the cover body 31, and a support portion 332 extending downward from the outer edge of the folded surface 331.
  • the support portion 332 The bottom end can be supported on the ground or slightly spaced from the ground.
  • the bottom end surface of the support portion 332 is inclined with respect to the horizontal plane, and the inclination angle ⁇ is 0 to 30°, which is 15° in the present embodiment.
  • At least one air outlet 333 is defined in the folding surface 331.
  • the air outlet holes 333 are plural, and each of the air outlet holes 333 is formed in a waist shape and arranged along the circumferential direction of the folding surface 331.
  • the direction indicated by the arrow is the flow direction of the hot gas flow.
  • the nozzle 3 is placed on the weeds to be removed, so that the bottom end surface of the support portion 332 is supported on the ground so that the weeds are accommodated in the nozzle 3; then, the weeder body 2 is activated, and the weeder is activated.
  • the heated hot gas stream in the body 2 is guided into the nozzle 3 for weeding; and the latter part of the hot air stream encounters the ground to block the inside of the nozzle 3 and rapidly spreads toward the circumference side, and then immediately from the top of the close-up folded portion 33.
  • the air outlet 333 flows out of the nozzle 3, effectively avoiding the flow from the gap between the bottom end surface of the nozzle 3 and the grassland to the grass near the periphery of the nozzle 3, without damaging the surrounding vegetation that is not desired to be removed;
  • the bottom of the cover body 31 is provided with a retaining ring 311, the retaining ring 311 and the folded portion 33 cooperate to form a blocking member for blocking the return of the hot air flow, so that the hot air flow is prevented from flowing back from the inside of the nozzle 3 to the herbicide body 2 Internally, this causes the inside of the lawnmower body 2 to be overheated and damaged, and the retaining ring 311 can guide the hot air flow more smoothly to the air outlet 333;
  • the distance between the air outlet 333 and the bottom end surface of the support portion 332 was 1 cm.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Catching Or Destruction (AREA)

Abstract

一种防热回流的除草机用喷嘴（3），包括罩体（31）、连接部（32）、翻折部（33）；翻折部（33）包括一圈翻折面（331）和支承部（332），翻折面（331）上开设有至少一个出气孔（333），且出气孔（333）与支承部（332）的底端面之间的距离小于或等于2cm，与现有技术相比，喷嘴（3）使得部分遇到地面的阻挡返回喷嘴（3）内部后，迅速向外周测扩散，继而立即从近距离设置的翻折部（33）顶部的出气孔排出，有效地避免了从喷嘴（3）的底端面与所在草地之间的间隙流向喷嘴（3）外围附近的草地，热气流在排出的同时还能冷却，避免破坏周围的需要保留的植被，还能确保使用者的安全。

Description

一种防热回流的除草机用喷嘴 技术领域
本发明涉及除草机的技术领域，尤其是一种用于除草机上的能防止热回流的喷嘴。
背景技术
农田杂草防除的方法主要有机械、化学、人力、静电、生物除草等。近年来，由于化学除草的高效性使其成为了主要的除草方式，但化学除草方法的广泛使用也引发了一系列的农业环境恶化和粮食安全问题。因此，非化学的除草方法开始受到越来越多的重视。如机械除草、热除草等，然而机械除草会导致严重的水分蒸发丢失，在水资源稀少的地方需谨慎使用。
而热除草提供了一种不使用除草剂的方法，其原理是利用加热后的空气除草灭虫。如中国专利CN204070269U(专利号为ZL201420592889.2)，公开了一种新型热风除草灭虫装置，包括电控箱、加热单元和引风单元，加热单元包括箱体和设置在箱体内的电阻丝，引风单元包括导风筒、固定在导风筒内的排风机和一端与导风筒的排气口连通另一端朝向地面的喇叭形开口三部分，加热单元开启后，电阻丝将箱体内的空气加热，当加热到需要的温度后，开启引风单元，将热量通过鼓风机排到导风筒中，再通过排风机将热量和风通过喇叭形开口排到地上。
上述热风除草灭虫装置，引风单元的出风部分仅为一个喇叭形开口，则在热空气将杂草破坏后，不能对热空气进行处理。因此，当破坏杂草后，热空气趋向于向上回流，使得装置过度加热而损坏；此外，热空气趋向于从喇叭形开口的下边缘排出，从而导致周围的非杂草植被被毁坏，从而带来不必要的损失，甚至对使用者的安全造成威胁。
发明内容
本发明所要解决的技术问题是针对上述现有技术存在的问题，提供一种使用安全、提高除草有效性的防热回流的除草机用喷嘴。
本发明解决上述技术问题所采用的技术方案为：一种防热回流的除草机用喷嘴，包括罩体和用于与除草机本体连接的连接部，所述连接部设置在罩体顶部，其特征在于：所述罩体的底部设置有翻折部，罩体、连接部、翻折部一体相连；所述翻折部包括从所述罩体的底部外侧面向外侧延伸而形成的一圈翻折面、以及从翻折面的外边缘向下延伸的支承部，所述翻折面上开设有至少一个出气孔，并且所述出气孔与所述支承部的底端面之间的距离小于或等于2cm。
为了与翻折面配合能阻挡热空气的回流到除草机本体，同时也使得进入到喷嘴内的热气流能够更加顺利地引导至翻折面上的出气孔，所述罩体的底部内侧面向下侧延伸而形成环状的挡圈。
为便于既能确保热空气的流速，又能扩大热空气作用的范围，所述罩体的纵截面呈上小下大设置的截头圆锥形。
为便于使用者操控并移动除草机，优选地，所述支承部的底端面相对于水平面倾斜，倾斜的角度为0～30°。优选地，为15°。
为了使出气孔的位置具有最佳的引导热气流排出的效果，有效避免破坏周围的植被，所述出气孔与所述支承部的底端面之间的距离为1cm。经试验证明，当出气孔与喷嘴的底端面之间的距离为1cm时，热气流遇到地面的阻挡返回喷嘴内部，并向两侧迅速扩散，继而立即从近距离的多个出气孔排出喷嘴之外，非常有效。
与现有技术相比，本发明的优点在于：
通过在喷嘴的底部设置向外侧一体延伸的翻折部，使得部分热气流遇到地面的阻挡返回喷嘴内部后，迅速向外周侧扩散，继而立即从近距离设置的翻折部顶部的出气孔排出，有效地避免了从喷嘴的底端面与所在草地之间的间隙流向喷嘴外围附近的草地，热气流在排出的同时还能冷却，避免破坏周围的需要保留的植被，还能确保使用者的安全；
同时，翻折部及出气孔形成了防止热气流回流的阻挡部件，避免了热气流从喷嘴内部径直向上又回流到除草机本体内部，而导致除草机本体内部过热而损坏的这种情况发生。
附图说明
图1为应用有本发明的喷嘴的除草机的示意图；
图2为本发明实施例的喷嘴的结构示意图；
图3为本发明实施例的喷嘴的剖视图。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
如图1所示，为应用有本发明的喷嘴的除草机的结构示意图。该除草机包括便于握持的杆部1，连接到杆部1一端的除草机本体2，以及连接在除草机本体2头部的出风口处的喷嘴3。
除草机本体2内设置有加热装置，经加热装置加热而产生的热气流射入到喷嘴3的内部容腔内，并经由喷嘴3喷出到需要除去杂草的部位，热气流加热杂草并且在很短的时间内将其破坏而完成除草。
如图2和图3所示，喷嘴3包括罩体31，设置在罩体31顶部的连接部32，以及设置在罩体31底部的翻折部33，罩体31、连接部32和翻折部33内部中空形成容腔并且一体相连、互相连通。
罩体31的顶面开口小于底面开口，其纵截面呈上小下大的截头圆锥形，从而既能确保热空气的流速，又能扩大热空气作用的范围。罩体31底部内侧面向下延伸而形成环状的挡圈311。
连接部32用于与除草机本体2的头部连接。
翻折部33包括从罩体31的底部外侧面向外侧延伸而形成的一圈翻折面331、以及从翻折面331的外边缘向下延伸的支承部332，在使用时，支承部332的底端可支承在地面上，或离地面稍有间隙。支承部332的底端面相对于水平面倾斜，倾斜的角度α为0～30°，在本实施例中为15°。
翻折面331上开设有至少一个出气孔333，在本实施例中，出气孔333为多个，各出气孔333呈腰形，并沿翻折面331的周向间隔布置。
如图3所示，其中的箭头所示方向为热气流的流动方向。当需要除草时，将喷嘴3放置于需要取出的杂草上，使得支承部332的底端面支承在地面上，从而杂草容置在喷嘴3内；然后，启动除草机本体2，将除草机本体2中加热后的热气流引导到喷嘴3内进行除草；而后部分热气流遇到地面的阻挡返回喷嘴3内部，并向周侧迅速扩散，继而立即从近距离设置的翻折部33顶部上的出气孔333向喷嘴3外部流出，有效地避免了从喷嘴3的底端面与所在草地之间的间隙流向喷嘴3外围附近的草地，不会破坏周围的不想除去的植被；
同时，由于罩体31底部设置有挡圈311，该挡圈311和翻折部33配合形成了阻挡热气流回流的阻挡部件，避免了热气流从喷嘴3内部径直向上又回流到除草机本体2内部，而导致除草机本体2内部过热而损坏的这种情况发生，并且，挡圈311对热气流能够更加顺利地流向出气孔333起到很好的引导作用；
另外，具有一定流速的热气流从出气孔333流出时能带走周围的部分凉爽空气，使热气流被冷却，而不会对使用者造成伤害。出气孔333与支承部332的底端面之间的距离为1cm。

Claims (5)

  1. 一种防热回流的除草机用喷嘴，包括罩体(31)和用于与除草机本体连接的连接部(32)，所述连接部(32)设置在罩体(31)顶部，其特征在于：
    所述罩体(31)的底部设置有翻折部(33)，罩体(31)、连接部(32)、翻折部(33)一体相连；
    所述翻折部(33)包括从罩体(31)的底部外侧面向外侧延伸而形成的一圈翻折面(331)、以及从翻折面(331)的外边缘向下延伸的支承部(332)，所述翻折面(331)上开设有至少一个出气孔(333)，并且所述出气孔(333)与所述支承部(332)的底端面之间的距离小于或等于2cm。
  2. 如权利要求1所述的防热回流的除草机用喷嘴，其特征在于：所述罩体(31)的底部内侧面向下侧延伸而形成环状的挡圈(311)。
  3. 如权利要求1所述的防热回流的除草机用喷嘴，其特征在于：所述罩体(31)的纵截面呈上小下大设置的截头圆锥形。
  4. 如权利要求1～3中任一项所述的防热回流的除草机用喷嘴，其特征在于：所述支承部(332)的底端面相对于水平面倾斜，倾斜的角度(α)为0～30°。
  5. 如权利要求1～3中任一项所述的防热回流的除草机用喷嘴，其特征在于：所述出气孔(333)与所述支承部(332)的底端面之间的距离为1cm。
PCT/CN2016/000289 2016-05-25 2016-06-01 一种防热回流的除草机用喷嘴 WO2017201637A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201620488161.4U CN205756808U (zh) 2016-05-25 2016-05-25 一种防热回流的除草机用喷嘴
CN201620488161.4 2016-05-25

Publications (1)

Publication Number Publication Date
WO2017201637A1 true WO2017201637A1 (zh) 2017-11-30

Family

ID=58109771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/000289 WO2017201637A1 (zh) 2016-05-25 2016-06-01 一种防热回流的除草机用喷嘴

Country Status (2)

Country Link
CN (1) CN205756808U (zh)
WO (1) WO2017201637A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3539378A1 (en) * 2018-03-15 2019-09-18 Exel Industries Thermal weeders
GB2572026A (en) * 2018-03-15 2019-09-18 Exel Ind Sa Thermal Weeders

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014363A1 (en) * 1990-03-21 1991-10-03 Ernest Deryck Humphrey Plant-killing device
CN102216104A (zh) * 2008-07-23 2011-10-12 巴里·科林·布朗 燃料填充器盖
CN102562383A (zh) * 2010-12-07 2012-07-11 株式会社牧田 手持式作业机械
CN102845410A (zh) * 2011-07-01 2013-01-02 艾格赛尔工业公司 用于手动式局部除草的装置、组件及方法
CN104456930A (zh) * 2014-11-10 2015-03-25 浙江普莱得电器有限公司 一种多功能热风枪
CN205106135U (zh) * 2015-08-27 2016-03-30 常州武进长城工具有限公司 热风除草机风罩

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014363A1 (en) * 1990-03-21 1991-10-03 Ernest Deryck Humphrey Plant-killing device
CN102216104A (zh) * 2008-07-23 2011-10-12 巴里·科林·布朗 燃料填充器盖
CN102562383A (zh) * 2010-12-07 2012-07-11 株式会社牧田 手持式作业机械
CN102845410A (zh) * 2011-07-01 2013-01-02 艾格赛尔工业公司 用于手动式局部除草的装置、组件及方法
CN104456930A (zh) * 2014-11-10 2015-03-25 浙江普莱得电器有限公司 一种多功能热风枪
CN205106135U (zh) * 2015-08-27 2016-03-30 常州武进长城工具有限公司 热风除草机风罩

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3539378A1 (en) * 2018-03-15 2019-09-18 Exel Industries Thermal weeders
GB2572026A (en) * 2018-03-15 2019-09-18 Exel Ind Sa Thermal Weeders
GB2572026B (en) * 2018-03-15 2022-08-31 Exel Ind Sa Thermal Weeders
EP4331357A3 (en) * 2018-03-15 2024-05-22 Exel Industries Thermal weed diffuser

Also Published As

Publication number Publication date
CN205756808U (zh) 2016-12-07

Similar Documents

Publication Publication Date Title
US9010017B2 (en) Apparatus and method for controlling bedbugs
US10028499B2 (en) Apparatus, assembly and method for manual and localized weeding
WO2017201637A1 (zh) 一种防热回流的除草机用喷嘴
ES2757057T3 (es) Módulo de pulverización compacto, sistema de polarización y de gestión de una pluralidad de tales módulos y procedimiento de gestión de módulos de dicho sistema
JP5202511B2 (ja) 空中散布装置
WO2008071193A1 (en) Method and system for killing lice and nits
KR101633274B1 (ko) 공기소독장치에 구비되는 증발챔버
KR101385180B1 (ko) 원예작물 성장을 위한 송풍용 비닐덕트 장치
WO2019115820A1 (en) A method and apparatus for controlling vegetation by means of a heated gas
KR101399256B1 (ko) 화염제초기
ES2704867T3 (es) Sistema de limpieza y de desinfección de los suelos
US20200383312A1 (en) A method and apparatus for controlling vegetation by means of a heated gas
JP2008283908A (ja) ハウス栽培の換気システム
JP2015149925A (ja) 蜂駆除方法及びその装置
EP4331357A3 (en) Thermal weed diffuser
KR20220131095A (ko) 선박의 외기 유입 장치
US3409001A (en) Space heater base plate construction
CN205624104U (zh) 一种土壤消毒机的棋盘式吹风管道装置
CN106417217B (zh) 一种食用菌杀虫喷雾系统
KR102590446B1 (ko) 방제장치용 노즐어셈블리
JP2004275131A (ja) 消毒用器具、消毒用ホース及び土壌加熱消毒方法
KR200482831Y1 (ko) 연막방역시 꿀벌 화상 방지기
CN206284191U (zh) 散热装置
KR20180000838U (ko) 공기 순환장치
JP2022077436A (ja) 圃園用除草装置並びにこれを用いた圃園管理方法

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16902627

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 16902627

Country of ref document: EP

Kind code of ref document: A1