JP2013146262A - Antifreeze spray beam - Google Patents

Antifreeze spray beam Download PDF

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Publication number
JP2013146262A
JP2013146262A JP2012186305A JP2012186305A JP2013146262A JP 2013146262 A JP2013146262 A JP 2013146262A JP 2012186305 A JP2012186305 A JP 2012186305A JP 2012186305 A JP2012186305 A JP 2012186305A JP 2013146262 A JP2013146262 A JP 2013146262A
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Prior art keywords
valve
spray
pipe
spray liquid
stop cock
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JP2012186305A
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JP5204339B1 (en
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Yoshinari Imagawa
良成 今川
Seiko Yamamoto
成子 山本
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Yamaho Industry Co Ltd
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Yamaho Industry Co Ltd
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Priority to JP2012186305A priority Critical patent/JP5204339B1/en
Priority to KR1020120110634A priority patent/KR101999302B1/en
Priority to CN201210544520XA priority patent/CN103170423A/en
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Publication of JP5204339B1 publication Critical patent/JP5204339B1/en
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    • 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
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A01M7/005—Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields
    • A01M7/0071—Construction of the spray booms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1627—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock
    • B05B1/1636—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative rotative movement of the valve elements
    • B05B1/1645—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative rotative movement of the valve elements the outlets being rotated during selection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/005—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour the liquid or other fluent material being a fluid close to a change of phase
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material

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  • 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)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

PROBLEM TO BE SOLVED: To eliminate a problem of breakage due to freezing and temporary use regulation by preventing the generation of freeze of remaining spray liquid in a spray beam of a sprayer.SOLUTION: A water releasing valve 5 is arranged in a spray beam of a sprayer having a water stop cock 4 opening and closing a pipe channel 2b in a root part of a spray pipe 2 and a spray nozzle in at least the distal end of the spray pipe 2 respectively, there by remaining spray liquid in the spray pipe 2 can be discharged via the water releasing valve 5 when the water stop cock 4 is closed. Although the water stop cock 4 and the water releasing valve 5 are constituted of a three-way valve 11 and are compounded, they are arranged as independent valves.

Description

この発明は、薬剤などを散布する噴霧機の散布竿、特に、使用後に内部に噴霧液が残存しやすい長尺の噴管（管竿）を有する散布竿であって、残存噴霧液の凍結を無くし得るようにした凍結防止散布竿に関する。   The present invention relates to a sprayer for a sprayer for spraying a medicine or the like, and in particular, a sprayer having a long jet tube (tube tube) in which the sprayed liquid tends to remain after use, and freezing the remaining sprayed liquid. The present invention relates to an anti-freezing sprayer that can be eliminated.

殺虫剤の噴霧などに利用される噴霧機の中に、ひとつの噴管に対して複数の噴霧ノズルを設けたものがある。その構造の噴霧機に用いる散布竿のひとつを、本出願人は下記特許文献１で提案している。   Some sprayers used for spraying insecticides have a plurality of spray nozzles for one jet tube. The applicant of the present invention has proposed one of the spray baskets used in the sprayer having such a structure in Patent Document 1 below.

その散布竿は、外パイプとその外パイプの内側に挿入した内パイプとで１本の噴管を構成し、内パイプをスライドさせることで噴管を伸縮させる。   In the sprinkler, an outer pipe and an inner pipe inserted inside the outer pipe constitute one jet pipe, and the inner pipe is slid to expand and contract the jet pipe.

なお、外パイプの内側に内パイプを挿入し、その内パイプを抜き差しすることで長さを可変となした噴管は、市販品の中にも存在する。   Note that there are also commercially available products that have a variable length by inserting an inner pipe inside the outer pipe and then removing the inner pipe.

特願２０１０−１３６９９４号Japanese Patent Application No. 2010-136994

長尺の噴管を用いて噴霧範囲を広げる散布竿は特に、使用後に噴管の内部に噴霧液が残存しやすい。噴管の根元部（畦畔噴口と称されている部分の後方）には、噴管の管路を開閉する止水コックが設けられており、その止水コックを閉じると、管路の出口に流出抵抗の大きい噴霧ノズルがあることから、噴管の内部に充満した噴霧液が排出されずに残ってしまう。   In particular, a spray basket that uses a long jet tube to expand the spray range tends to leave the spray liquid inside the jet tube after use. A water stop cock that opens and closes the pipe line of the tube is provided at the base of the tube (behind the part called the quayside nozzle). When the water stop cock is closed, the outlet of the pipe Since there is a spray nozzle having a large outflow resistance, the spray liquid filling the inside of the nozzle tube remains without being discharged.

その残存噴霧液が冬季に凍結すると、凍結による噴霧液の体積膨張によって散布竿が破損する。また、破損には至らなくても噴管が詰まった状態になる。加えて、伸縮式散布竿の場合、凍結によって噴管の伸縮も妨げられ、噴霧液が溶けるまでの間、散布竿が使用不能となる。   When the remaining spray liquid freezes in winter, the spray basket is damaged by the volume expansion of the spray liquid due to freezing. In addition, the tube is clogged even if it does not break. In addition, in the case of a telescopic sprinkler, the expansion and contraction of the jet tube is also hindered by freezing, and the sprinkler can not be used until the spray liquid is melted.

この発明は、噴霧機の散布竿を、残存噴霧液の凍結が生じないものにして凍結による破損や一時的な使用規制の問題をなくすることを課題としている。   It is an object of the present invention to eliminate the problem of damage due to freezing and temporary use restrictions by making the spraying basket of the sprayer free from the residual spray liquid.

上記の課題を解決するため、この発明においては、噴管の根元部に噴霧液供給管から噴管に至る管路を開閉する止水コックを有し、さらに、噴管の少なくとも先端に噴霧ノズルを有する噴霧機の散布竿に水抜き弁を設け、止水コック閉弁時に噴管内の残存噴霧液をその水抜き弁経由で排出可能となした。   In order to solve the above-described problems, in the present invention, the nozzle has a water stop cock that opens and closes a pipe line from the spray liquid supply pipe to the jet pipe at the base of the jet pipe, and further, a spray nozzle at least at the tip of the jet pipe A spray valve is provided in the spraying spout of the sprayer having a so that when the water stop cock is closed, the remaining spray liquid in the nozzle can be discharged via the drain valve.

前記止水コックと前記水抜き弁は、複合化（一体化）されたものが好ましく、両弁を３方弁で構成することでその複合化を実現することができる。   The water stop cock and the drain valve are preferably combined (integrated), and the combination can be realized by configuring both valves as three-way valves.

その３方弁は、弁体の位置の切り替えによって前記噴管を前記噴霧液供給管に接続する（連通させる）第１の位置と、前記噴管を前記噴霧液供給管及び前記排水口の２者から同時に切り離す（連通を断つ）第２の位置と、前記噴管を前記排水口に接続する（連通させる）第３の位置を選択できる構造の弁が特に好ましい。   The three-way valve has a first position for connecting (communicating) the jet tube to the spray liquid supply pipe by switching the position of the valve body, and the jet pipe is connected to the spray liquid supply pipe and the drain port 2. A valve having a structure capable of selecting a second position for simultaneously disconnecting (disconnecting) from a person and a third position for connecting (communicating) the nozzle to the drain outlet is particularly preferable.

前記水抜き弁は、前記噴管と前記噴霧液供給ホースとの間に下向き分岐の排水口を有する管継手を設けてその管継手に設置することもできる。   The drain valve may be installed in a pipe joint provided with a pipe joint having a downward branching drain port between the jet pipe and the spray liquid supply hose.

止水コックから独立させて設ける水抜き弁は、レバーを９０度回転させるだけで弁部の開閉ができる排水コック（市販品でよい）が操作性に優れるが、凍結防止の目的は、ゲートバルブなどを水抜き弁として用いても達成される。   The drain valve provided independently from the water stop cock is a drain cock (which can be a commercial product) that can be opened and closed by simply rotating the lever 90 degrees. This is also achieved by using a water drain valve.

この発明の散布竿は、止水コックを閉じて水抜き弁を開くことで、噴管内に残存した噴霧液を外部に排出することができる。その操作で、噴霧液そのものが無くなるため、噴管内での凍結が起こらず、凍結による散布竿の損傷や使用規制が回避される。   The spraying spout of the present invention can discharge the spray liquid remaining in the nozzle tube to the outside by closing the water stop cock and opening the drain valve. In that operation, since the spray liquid itself disappears, freezing in the injection tube does not occur, and damage to the spraying tub due to freezing and usage restrictions are avoided.

なお、前記水抜き弁を、止水コックと一体の３方弁で構成したもの、中でも、弁体の位置の切り替えによって前記第１〜第３の位置を選択できる３方弁を用いたものは、弁体を前記第２の位置に動かすことで噴管を噴霧液供給ホースと排水口の双方から切り離して噴管内の噴霧液を短期間であれば保持することもできる。   In addition, what comprised the said drain valve with the three-way valve integral with the water stop cock, and what used the three-way valve which can select the said 1st-3rd position by switching the position of a valve body especially By moving the valve body to the second position, the spray tube can be separated from both the spray solution supply hose and the drain port and the spray solution in the tube can be held for a short period of time.

薬剤入り噴霧液を散布する用途では、凍結の懸念が無ければ噴霧液の浪費をできるだけ減らすのがよく、３方弁として、噴管を噴霧液供給ホースと排水口の双方から切り離し得るものを用いることは噴霧液の浪費抑制に関して有効である。水抜き弁と止水コックを複合化したものは操作性に優れ、小型化や低コスト化も実現できる。   In applications where spray liquid containing medicine is sprayed, waste of spray liquid should be reduced as much as possible if there is no concern about freezing. Use a three-way valve that can separate the jet tube from both the spray liquid supply hose and the drain. This is effective in reducing waste of spray. The combination of the water drain valve and the water stop cock is excellent in operability, and can be reduced in size and cost.

止水コックと水抜き弁は、単独で設置されるもの、複合化されたもののどちらも手動弁でよく、電源を必要としない。   The water stop cock and drain valve, which are either installed alone or combined, may be manual valves and do not require a power source.

そのために、散布竿を使用する上での支障が全く生じない。また、電磁駆動の弁に比べて部品数が少なく、構造が単純で安価であり、故障する心配も殆どない。   For this reason, there is no problem in using the spreader. In addition, the number of parts is smaller than that of an electromagnetically driven valve, the structure is simple and inexpensive, and there is almost no risk of failure.

この発明の凍結防止散布竿の一例を示す斜視図The perspective view which shows an example of the anti-freezing spreader of this invention 図１の凍結防止散布竿の平面図Top view of the antifreeze sprinkler in FIG. （ａ）：図１の凍結防止散布竿の根元側を、止水コック開、水抜き弁閉の状態にして示す側面視断面図、（ｂ）：図３（ａ）のIII−III線に沿った位置の水抜き弁開状態の断面図(A): A cross-sectional side view showing the root side of the antifreezing sprinkler in FIG. 1 with the water stop cock open and the water drain valve closed, (b): along line III-III in FIG. Sectional view of the drain valve open state along the position 図１の凍結防止散布竿の根元側を止水コック閉、水抜き弁開の状態にして示す側面視断面図1 is a side sectional view showing the root side of the anti-freezing sprinkler in FIG. 1 with the water stop cock closed and the drain valve open. （ａ）：止水コックと水抜き弁を複合化した３方弁を、止水コック開、水抜き弁閉の状態にして示す断面図、（ｂ）：図５（ａ）の状態での３方弁のレバー位置を示す側面図(A): A cross-sectional view showing a three-way valve in which a stop cock and a drain valve are combined with the stop cock open and the drain valve closed, (b): in the state of FIG. Side view showing lever position of 3-way valve （ａ）：図５の３方弁を止水コック、水抜き弁が共に閉の状態にして示す断面図、（ｂ）：図６（ａ）の状態での３方弁のレバー位置を示す側面図(A): A cross-sectional view showing the three-way valve in FIG. 5 with both the water stop cock and the drain valve closed, (b): showing the lever position of the three-way valve in the state shown in FIG. 6 (a). Side view （ａ）：図５の３方弁を止水コック閉、水抜き弁閉の状態にして示す断面図、（ｂ）：図７（ａ）の状態での３方弁のレバー位置を示す側面図(A): Cross-sectional view showing the three-way valve of FIG. 5 with the water stop cock closed and the drain valve closed, (b): Side view showing the lever position of the three-way valve in the state of FIG. 7 (a) Figure

以下、添付図面の図１〜図７に基づいて、この発明の凍結防止散布竿の実施の形態を説明する。図１及び図２に例示した凍結防止散布竿１は、噴管２に複数の噴霧ノズル３を取り付け、さらに、噴管２の根元部に止水コック４と、この発明を特徴づける水抜き弁５を設けてなる。   Hereinafter, an embodiment of the antifreezing sprinkler of the present invention will be described based on FIGS. 1 to 7 of the accompanying drawings. The antifreezing sprinkler 1 illustrated in FIGS. 1 and 2 has a plurality of spray nozzles 3 attached to a jet tube 2, a water stop cock 4 at the root of the jet tube 2, and a drainage valve characterizing the present invention. 5 is provided.

６は、噴管２の畦畔噴口２ａ（根元側のパイプ）の外周に設けた手持ち用のグリップ、７は肩掛け用ベルトである。このグリップ６と肩掛け用ベルト７は必要に応じて設けられるものであって、必須の要素ではない。図中Ｈは、凍結防止散布竿１に接続される噴霧液供給ホースであって、ポンプ（図示せず）で汲み上げた噴霧液がこのホースを通して凍結防止散布竿１に送り込まれる。   Reference numeral 6 denotes a grip for hand-holding provided on the outer periphery of the ridge-side nozzle hole 2a (base pipe) of the injection tube 2, and 7 denotes a shoulder belt. The grip 6 and the shoulder belt 7 are provided as necessary, and are not essential elements. In the figure, H is a spray liquid supply hose connected to the antifreeze sprinkler 1, and the spray liquid pumped up by a pump (not shown) is fed into the freeze preventive sprinkler 1 through this hose.

噴霧ノズル３は、噴管２の先端と長手途中の２箇所に設けられている。畦畔噴口２ａよりも前方に配置される噴管の長手途中の噴霧ノズル３は、噴管２の外周にノズルホルダ８を装着してそのノズルホルダ８に取り付けているが、噴霧ノズル３は、散布竿の大きさによっては噴管２の先端のみに設けることも有り得る。   The spray nozzle 3 is provided at two locations in the middle of the tip and the longitudinal end of the jet tube 2. The spray nozzle 3 in the middle of the longitudinal direction of the jet tube arranged in front of the shore jet nozzle 2a is attached to the nozzle holder 8 by attaching the nozzle holder 8 to the outer periphery of the jet tube 2, but the spray nozzle 3 is Depending on the size of the spreader, it may be provided only at the tip of the jet tube 2.

ノズルホルダ８の内部には図示しない流路が設けられており、その流路が噴管２に貫通させて設けた連絡孔（これも図示せず）を介して噴管２の内側の管路２ｂ（図３、図４参照）に連通し、管路２ｂから前記連絡孔経由でノズルホルダ８内の流路に噴霧液が流れ、それがノズルホルダ８に保持された噴霧ノズル３から霧化されて噴射される。   A flow path (not shown) is provided inside the nozzle holder 8, and the flow path inside the nozzle tube 2 through a communication hole (also not shown) provided through the nozzle tube 2. 2b (see FIGS. 3 and 4), the spray liquid flows from the pipe line 2b to the flow path in the nozzle holder 8 via the communication hole, and is atomized from the spray nozzle 3 held in the nozzle holder 8. Is injected.

止水コック４は、図３、図４に示す球状の弁体４ａを、操作レバー４ｂの操作によって０°〜９０°の範囲で回転させて管路２ｂ（その管路の弁座４ｃとの間の通路）を開閉する周知のコックである。図示の止水コック４は操作性に優れるが、ボールバルブ以外のバルブと置き換えても差し支えない。   The water stop cock 4 rotates the spherical valve body 4a shown in FIG. 3 and FIG. 4 in the range of 0 ° to 90 ° by the operation of the operation lever 4b, so that the pipe 2b (with the valve seat 4c of the pipe) It is a well-known cock that opens and closes the passage between them. The illustrated stop cock 4 is excellent in operability, but may be replaced with a valve other than the ball valve.

なお、図３の水抜き弁５は、球状の弁体５ａと、操作レバー５ｂと、弁座５ｃを組み合わせた手動操作式のボールバルブであるが、この水抜き弁５は、止水コック４に類似したゲートバルブなどとの置き換えが可能である。   3 is a manually operated ball valve in which a spherical valve body 5a, an operation lever 5b, and a valve seat 5c are combined. The drain valve 5 includes a water stop cock 4; It can be replaced with a gate valve similar to.

水抜き弁５は、止水コック４と噴管２との間に下向き分岐の排水口１０を有する管継手９を配置してその管継手９に設けたが、止水コック４と水抜き弁５を複合化したバルブを採用することもできる。   In the drain valve 5, a pipe joint 9 having a downward branching drain port 10 is arranged between the water stop cock 4 and the injection pipe 2 and provided in the pipe joint 9. A valve in which 5 is combined can also be adopted.

その複合化したバルブの一例を図５〜図７に示す。例示のバルブは、メイン通路Ｍｐとそのメイン通路から分岐したサブ通路Ｓｐを有する単一の弁体（図示の弁体はボール状）１１ａと、その弁体を回転させる操作レバー１１ｂと、３個の弁座１１ｃを組み合わせた３方弁１１で構成されている。   An example of the combined valve is shown in FIGS. The illustrated valve includes a single valve body 11a having a main passage Mp and a sub passage Sp branched from the main passage (the valve body shown in the figure is a ball) 11a, an operation lever 11b for rotating the valve body, and three pieces. The three-way valve 11 is a combination of the valve seat 11c.

その３方弁の操作レバー１１ｂは、凍結防止散布竿１の側部に設けられており、その操作レバー１１ｂを図５（ｂ）の第１の切り替え位置に保持すると、図５（ａ）に示すように、弁体１１ａのメイン通路Ｍｐが解放され、サブ通路Ｓｐが排水口１０側の弁座１１ｃによって閉鎖されて３方弁１１よりも噴霧液供給ホースＨ側の管路２ｂが噴管２に接続される。   The operation lever 11b of the three-way valve is provided on the side portion of the antifreezing sprinkler 1 and when the operation lever 11b is held at the first switching position in FIG. 5B, the operation lever 11b is shown in FIG. As shown, the main passage Mp of the valve body 11a is released, the sub passage Sp is closed by the valve seat 11c on the drain port 10 side, and the pipe line 2b on the spray liquid supply hose H side than the three-way valve 11 is the injection tube. 2 is connected.

また、操作レバー１１ｂを図６（ｂ）の位置に回動させると、弁体４ａの位置が図６（ａ）に示した第２の位置に切り替えられてその弁体に設けられたメイン通路Ｍｐとサブ通路Ｓｐが弁座１１ｃによって閉鎖され、噴霧液供給ホースＨの噴管２に対する接続と噴管２の排水口１０に対する接続が共に断たれる。   When the operation lever 11b is rotated to the position shown in FIG. 6B, the position of the valve body 4a is switched to the second position shown in FIG. 6A, and the main passage provided in the valve body. Mp and the sub passage Sp are closed by the valve seat 11c, and the connection of the spray liquid supply hose H to the injection tube 2 and the connection of the injection tube 2 to the drain port 10 are both cut off.

さらに、操作レバー１１ｂを図７（ｂ）の位置に回動させると、弁体１１ａの位置が図７（ａ）に示した第３の位置に切り替わって弁座１１ｃによる弁体のメイン通路Ｍｐの噴管２からの切り離しが継続された状態で弁体のサブ通路Ｓｐが噴管２に接続され、そのサブ通路Ｓｐとメイン通路Ｍｐ経由で噴管２の内部が排水口１０に連通して噴管２内の残存噴霧液が外部に排出される。   Further, when the operation lever 11b is rotated to the position of FIG. 7B, the position of the valve body 11a is switched to the third position shown in FIG. 7A, and the main passage Mp of the valve body by the valve seat 11c. The sub-passage Sp of the valve element is connected to the jet tube 2 in a state where the disconnection from the jet tube 2 is continued, and the interior of the jet tube 2 communicates with the drain port 10 via the sub-passage Sp and the main passage Mp. The residual spray liquid in the jet tube 2 is discharged to the outside.

なお、操作レバー１１ｂの切り替え位置の確認は、レバーと弁ハウジングに照合用のマークを付したり、周知のラチェット機構を設けて行うと便利であるが、操作レバー１１ｂの操作位置によって噴霧液が散布されたり、散布が停止したり、存噴霧液が外部に排出されたりするので、照合用マークやラチェット機構は必ずしも必要ではない。   It is convenient to confirm the switching position of the operating lever 11b by putting a check mark on the lever and the valve housing or providing a known ratchet mechanism. However, depending on the operating position of the operating lever 11b, Since it is sprayed, spraying is stopped, or the existing spray liquid is discharged to the outside, the reference mark and the ratchet mechanism are not necessarily required.

この発明の凍結防止散布竿１は、上述したように、使用後に止水コック４を閉じ、その後、レバー１１ｂの操作によって水抜き弁５を開いて噴管２の内部に残存している噴霧液を外部に排出することができる。また、凍結の心配が無ければ使用後に止水コック４と水抜き弁５の双方を閉じて噴管２の内部の残存噴霧液を保持することもできる。   As described above, the antifreezing sprinkler 1 of the present invention closes the water stop cock 4 after use, and then opens the drain valve 5 by operating the lever 11b to remain in the inside of the injection tube 2. Can be discharged to the outside. If there is no concern about freezing, both the water stop cock 4 and the drain valve 5 can be closed after use to hold the remaining spray liquid inside the injection tube 2.

なお、水抜き弁５が開弁したときの残存噴霧液の排出は、特に排出圧を加えるわけではない。従って、排水口１０は、噴管２の下側に設けるのがよい。   The discharge of the remaining spray liquid when the drain valve 5 is opened does not particularly apply a discharge pressure. Therefore, the drain port 10 is preferably provided below the jet tube 2.

水抜き弁５を有する排水口１０を噴管２の下側に設けたものは、止水コック４を閉じ、水抜き弁５を開いた状態で散布竿１の先端側を少し持ち上げると、噴霧ノズル３の穴から噴管２に空気が流入して噴管２内の残存噴霧液が排水口１０から自然に流出する。   If the drainage port 10 having the drainage valve 5 is provided on the lower side of the nozzle tube 2, the spray cock 1 is sprayed when the water stop cock 4 is closed and the drainage valve 5 is opened and the tip end side of the spraying tub 1 is lifted up slightly. Air flows into the tube 2 from the hole of the nozzle 3, and the remaining spray liquid in the tube 2 naturally flows out from the drain port 10.

また、噴霧ノズル３の穴が水抜き弁５よりも低い位置にあるときには排水口１０から噴管２に空気が流入して噴霧ノズル３の穴から残存噴霧液が流出する。 Further, when the hole of the spray nozzle 3 is at a position lower than the drain valve 5, air flows into the injection pipe 2 from the drain port 10 and the remaining spray liquid flows out of the hole of the spray nozzle 3.

なお、噴管２は、内パイプと、その内パイプを内側にスライド自在に挿入する外パイプと、内パイプをスライドの各点に固定するロック機構を組み合わせて構成される伸縮式の管であってもよい。勿論これに限定されるものではなく、周知の散布竿の全てにこの発明を適用できる。   The jet tube 2 is a telescopic tube configured by combining an inner pipe, an outer pipe into which the inner pipe is slidably inserted, and a lock mechanism for fixing the inner pipe to each point of the slide. May be. Of course, the present invention is not limited to this, and the present invention can be applied to all well-known spreading baskets.

１ 凍結防止散布竿
２ 噴管
２ａ 畦畔噴口
２ｂ 管路
３ 噴霧ノズル
４ 止水コック
４ａ 弁体
４ｂ 操作レバー
４ｃ 弁座
５ 水抜き弁
５ａ 弁体
５ｂ 操作レバー
５ｃ 弁座
６ グリップ
７ 肩掛け用ベルト
８ ノズルホルダ
９ 管継手
１０ 排水口
１１ 止水コックと水抜き弁を複合化した３方弁
１１ａ 弁体
１１ｂ 操作レバー
１１ｃ 弁座
Ｈ 噴霧液供給ホース DESCRIPTION OF SYMBOLS 1 Antifreeze sprinkle 2 Jet pipe 2a Vestibule nozzle 2b Pipe line 3 Spray nozzle 4 Water stopcock 4a Valve body 4b Operation lever 4c Valve seat 5 Drain valve 5a Valve body 5b Operation lever 5c Valve seat 6 Grip 7 Shoulder belt 8 Nozzle holder 9 Pipe joint 10 Drain port 11 Three-way valve 11a combined with water stop cock and drain valve 11a Valve body 11b Operation lever 11c Valve seat H Spray liquid supply hose

Claims (4)

噴管（２）の根元部に噴霧液供給ホース（Ｈ）から噴管に至る管路（２ｂ）を開閉する止水コック（４）を有し、さらに、前記噴管（２）の少なくとも先端に噴霧ノズル（３）を有する噴霧機の散布竿に水抜き弁（５）を設け、止水コック（４）を閉弁させたときに前記噴管（２）内の残存噴霧液をその水抜き弁（５）経由で排出可能となした凍結防止散布竿。   The root of the jet tube (2) has a water stop cock (4) for opening and closing a pipe (2b) from the spray liquid supply hose (H) to the jet tube, and at least the tip of the jet tube (2) A spray valve (5) is provided in a spray bottle of a sprayer having a spray nozzle (3), and when the water stop cock (4) is closed, the remaining spray liquid in the jet tube (2) is removed from the water. Freezing prevention sprayer that can be discharged via the drain valve (5). 前記止水コック（４）と前記水抜き弁（５）を、噴霧液供給ホース（Ｈ）に対する前記噴管（２）の接続と排水口（１０）に対する前記噴管（２）の接続を選択的に切り替える３方弁（１１）で構成した請求項１に記載の凍結防止散布竿。   The stop cock (4) and the drain valve (5) are selected for connection of the injection pipe (2) to the spray liquid supply hose (H) and connection of the injection pipe (2) to the drain port (10). The antifreezing sprinkler according to claim 1, comprising a three-way valve (11) that switches automatically. 前記３方弁（１１）として、弁体（１１ａ）の位置の切り替えによって前記噴管（２）を前記噴霧液供給ホース（Ｈ）に接続する第１の位置と、前記噴管（２）を前記噴霧液供給ホース（Ｈ）及び前記排水口（１０）の２者から同時に切り離す第２の位置と、前記噴管（２）を前記排水口（１０）に接続する第３の位置を選択できる構造の弁を設けた請求項２に記載の凍結防止散布竿。   As the three-way valve (11), a first position for connecting the jet pipe (2) to the spray liquid supply hose (H) by switching the position of the valve body (11a), and the jet pipe (2). A second position for simultaneously disconnecting the spray liquid supply hose (H) and the drainage port (10) and a third position for connecting the nozzle (2) to the drainage port (10) can be selected. The antifreezing sprinkler according to claim 2, wherein a valve having a structure is provided. 前記噴管（２）と前記噴霧液供給ホース（Ｈ）との間に下向き分岐の排水口（１０）を有する管継手（９）を設けてその管継手（９）に前記水抜き弁（５）を設置した請求項１に記載の凍結防止散布竿。   A pipe joint (9) having a downward branching drain port (10) is provided between the jet pipe (2) and the spray liquid supply hose (H), and the drain valve (5) is provided in the pipe joint (9). The anti-freezing sprayer according to claim 1 installed.
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