JP4700503B2 - Soil disinfector - Google Patents

Soil disinfector Download PDF

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JP4700503B2
JP4700503B2 JP2006015557A JP2006015557A JP4700503B2 JP 4700503 B2 JP4700503 B2 JP 4700503B2 JP 2006015557 A JP2006015557 A JP 2006015557A JP 2006015557 A JP2006015557 A JP 2006015557A JP 4700503 B2 JP4700503 B2 JP 4700503B2
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chemical
pump
intermittent drive
suction
chemical liquid
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JP2007195423A (en
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勝善 前田
恭生 高山
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Agritecno Yazaki Co Ltd
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Description

本発明は、園芸作物や野菜等を栽培する圃場において発生する、立枯れ病の病原菌等をあらかじめ殺菌・消毒するため、トラクタ等の走行車輌に装着して、播種前の圃場に薬液を注入する土壌消毒機に関する。   In order to sterilize and disinfect the pathogenic bacteria of bacterial wilt that occur in fields where horticultural crops, vegetables, etc. are cultivated in advance, the present invention is mounted on a traveling vehicle such as a tractor and injects chemicals into the field before sowing. It relates to soil disinfection machines.

従来より、トラクタ等の走行車輌に装着されるマルチ同時土壌消毒機においては、ダイヤフラム等の間欠駆動ポンプによって、薬液タンクからの薬液を吸入ホースを介して吸入した後、圧力を付加して吐出ホースから吐出し、薬液注入爪を介して土壌内に注入する技術、更には、前記吸入ホースや吐出ホースの途中部に薬液流確認計を設けて薬液の吸入や吐出の有無を目視で確認する技術が公知となっている(例えば特許文献1)。
特許第3029910号公報
Conventionally, in a multi-simultaneous soil sterilizer mounted on a traveling vehicle such as a tractor, a chemical solution from a chemical solution tank is sucked in via a suction hose by an intermittent drive pump such as a diaphragm, and then a pressure is applied to a discharge hose. Technology that discharges from the liquid and injects into the soil via the chemical liquid injection claw, and furthermore, a technology that visually confirms the presence or absence of chemical liquid inhalation or discharge by providing a chemical flow confirmation meter in the middle of the suction hose or discharge hose Is known (for example, Patent Document 1).
Japanese Patent No. 3029910

前記間欠駆動ポンプによる消毒作業の作業効率の更なる向上を図るには、複数の間欠駆動ポンプを並置して多数の薬液注入爪を使用可能とすることで、薬液の注入範囲を拡大すると共に、各間欠駆動ポンプ間における薬液吸入時期をずらして土壌内に薬液を注入する薬液注入時期もずらすことで、間欠駆動に起因する未注入期間を短縮することが、極めて有効である。しかし、これに伴い、吸入ホースの本数も増加するため、薬液タンクにはたくさんの吸入ホースの吸入端が挿入されることとなる。ところが、薬液のガス化やオーバーフローによる流出などを防止する目的から薬液タンクの薬液取出口は小さく設計されており、そのために吸入端を挿入できない吸入ホース用として新たに薬液タンクを開缶する必要が生じ、その結果、薬液が残った開缶済みの薬液タンクが増え、このような開缶済みの薬液タンクでは、薬液タンク内に浸入した水分による薬液タンク本体の腐食の促進、該薬液タンク本体と缶蓋との隙間からの薬液ガスの流出、または外気に暴露されたことによる薬液自体の品質劣化、等が生じるという問題があった。また、前記薬液流確認計では、外部から内部を目視可能な筒内に遊動体が内設され、該遊動体は、前記間欠駆動ポンプによって間欠的に吸入される薬液の脈動により前記筒内を往復移動可能に構成されると共に、その往復移動方向は、略水平方向に設定されている。しかしながら、トラクタ等の走行車輌に装着された土壌消毒機にあっては、作業中のエンジン駆動や走行・旋回に伴う振動は、鉛直方向成分に比べて水平方向成分が著しく大きいため、該水平方向成分のせいで遊動体自体が薬液流確認計の筒内で往復移動方向に大きく振動してピストンとして薬液に作用し、吸入流路内の薬液を強制的に脈動させる結果、薬液の注入・停止の確実な制御ができずに、薬液注入爪等からの液だれが発生する、という問題があった。   In order to further improve the work efficiency of the disinfection work by the intermittent drive pump, a plurality of intermittent drive pumps can be juxtaposed and a large number of chemical liquid injection claws can be used, thereby expanding the injection range of the chemical liquid, It is extremely effective to shorten the non-injection period caused by intermittent drive by shifting the chemical solution intake timing between the intermittent drive pumps and also shifting the chemical injection timing for injecting the chemical solution into the soil. However, since the number of suction hoses increases with this, many suction hoses of suction hoses are inserted into the chemical tank. However, the chemical solution outlet of the chemical solution tank is designed to be small for the purpose of preventing the chemical solution from being gasified or overflowing, so that it is necessary to open a new chemical solution tank for the suction hose where the suction end cannot be inserted. As a result, the number of opened chemical tanks with chemicals remaining increases, and in such opened chemical tanks, the corrosion of the chemical tank main body due to moisture that has entered the chemical liquid tank is accelerated. There has been a problem in that chemical gas flows out from the gap with the can lid, or the quality of the chemical itself is deteriorated due to exposure to the outside air. Further, in the chemical flow confirmation meter, a floating body is provided in a cylinder that can be visually observed from the outside, and the floating body is moved in the cylinder by the pulsation of the chemical liquid that is intermittently sucked by the intermittent drive pump. The reciprocating movement direction is set to a substantially horizontal direction. However, in a soil disinfector mounted on a traveling vehicle such as a tractor, the horizontal component is significantly larger than the vertical component in the vibration caused by engine driving or running / turning during work. Due to the components, the floating body itself vibrates greatly in the reciprocating direction in the cylinder of the chemical flow confirmation meter, acting as a piston on the chemical liquid, and forcibly pulsating the chemical liquid in the suction flow path. However, there is a problem in that liquid dripping from the chemical injection nail or the like occurs without reliable control.

本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。
請求項1においては、走行車輌(2)に装着され、消毒用の薬液を貯溜する薬液タンク(12)と、該薬液タンク(12)からの薬液を間欠的に吸入し吐出する2組の間欠駆動ポンプ(7・8)とを備え、各間欠駆動ポンプ(7・8)間における薬液吸入時期の位相が少なくとも一部で異なる土壌消毒機において、前記薬液タンク(12)から間欠駆動ポンプ(7・8)までの吸入流路(29)の途中部に、前記薬液タンク(12)からの薬液を分岐して、各間欠駆動ポンプ(7・8)に吸入させる分岐構造(29c)を設け、前記間欠駆動ポンプ(7・8)から薬液の吐出口までの吐出流路と、前記吸入流路(29)との少なくとも一方の途中部に、薬液流を確認するための薬液流確認計(15)を設け、該薬液流確認計(15)には、前記間欠駆動ポンプ(7・8)によって間欠的に吸入または吐出される薬液の脈動により往復移動する遊動体(55)を設け、該遊動体(55)の往復移動方向を、略鉛直方向に設定し、前記薬液流確認計(15)を固定するための取付プレート(14)を備え、該取付プレート(14)には階段状の取付部(14a)を設け、各階段状の取付部(14a)から突設した支持ステー(14b)に、前記薬液流確認計(15)の取付ステー(57)を固定したものである。
請求項2においては、請求項1記載の土壌消毒機において、前記間欠駆動ポンプ(7・8)の各組において、両間欠駆動ポンプ(7・8)間における薬液吸入時期の位相を略180度ずらしたものである。
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
According to claim 1, a chemical tank (12) that is mounted on the traveling vehicle (2) and stores a chemical liquid for disinfection, and two sets of intermittents that intermittently inhale and discharge the chemical liquid from the chemical tank (12). In a soil disinfecting machine having a drive pump (7, 8), and the phase of the chemical solution suction timing between the intermittent drive pumps (7, 8) is different at least in part, the intermittent drive pump (7 A branch structure (29c) is provided in the middle of the suction flow path (29) up to 8) for branching the chemical liquid from the chemical liquid tank (12) and causing each intermittent drive pump (7, 8) to inhale, A chemical flow confirmation meter (15) for confirming the chemical flow in the middle of at least one of the discharge flow path from the intermittent drive pump (7, 8) to the discharge port of the chemical liquid and the suction flow path (29). ) And the chemical flow confirmation meter (15) A floating body (55) that reciprocates due to the pulsation of the chemical liquid that is intermittently sucked or discharged by the intermittent drive pump (7, 8) is provided, and the reciprocating direction of the floating body (55) is set to a substantially vertical direction. And a mounting plate (14) for fixing the chemical flow confirmation meter (15). The mounting plate (14) is provided with a stepped mounting portion (14a), and each stepped mounting portion (14a). A mounting stay (57) of the chemical flow confirmation meter (15) is fixed to a support stay (14b) projecting from the support .
According to a second aspect of the present invention, in the soil disinfector according to the first aspect, in each pair of the intermittent drive pumps (7, 8), the phase of the chemical solution suction timing between the two intermittent drive pumps (7, 8) is approximately 180 degrees. It is a staggered one.

本発明は、以上のように構成したので、以下に示す効果を奏する。
すなわち、請求項1においては、走行車輌に装着され、消毒用の薬液を貯溜する薬液タンクと、該薬液タンクからの薬液を間欠的に吸入し吐出する複数の間欠駆動ポンプとを備え、各間欠駆動ポンプ間における薬液吸入時期の位相が少なくとも一部で異なる土壌消毒機において、前記薬液タンクから間欠駆動ポンプまでの吸入流路の途中部に、薬液タンクからの薬液を分岐して各間欠駆動ポンプに吸入させる分岐構造を設けたので、吸入ホース等の吸入流路の吸入端の数を減らして、少ない薬液タンクで消毒作業を実施することができ、開缶済みの薬液タンクの数を減らして、開缶により発生する、薬液タンク中に浸入した水分による薬液タンク本体の腐食促進、該薬液タンク本体と缶蓋との隙間からの薬液ガスの流出、外気に暴露されたことによる薬液自体の品質劣化を、防止することができる。更に、土壌消毒機に予備の薬液タンクを積載するための空間を確保することができ、同種又は異種の薬液の入った薬液タンクを薬液タンク保管所等まで消毒作業中に取りに戻る必要がなくなり、作業範囲の拡大や使用薬液の変更を作業中でも迅速に行うことができ、消毒作業効率の更なる向上を図ることができる。
また、各間欠駆動ポンプ間における薬液吸入時期の位相が全く同じ場合には、薬液タンクから分岐構造までの吸入流路は、複数の間欠駆動ポンプによって同時に使用されるために著しい拡径化が避けられないが、本発明のように薬液吸入時期の位相が少なくとも異なるという条件下では、分散使用が可能であり、吸入流路の吸入端の拡径を抑制して薬液タンクの薬液取出口に挿入可能な吸入端の数をできるだけ多くすることができ、上述の分岐構造の効果を更に有効に発揮することができる。
また、前記間欠駆動ポンプから薬液の吐出口までの吐出流路と、前記吸入流路との少なくとも一方の途中部に、薬液流を確認するための薬液流確認計を設け、該薬液流確認計には、前記間欠駆動ポンプによって間欠的に吸入または吐出される薬液の脈動により往復移動する遊動体を設け、該遊動体の往復移動方向を、略鉛直方向に設定するので、作業中のエンジン駆動や走行・旋回に伴う振動のせいで遊動体が往復移動方向に大きく振動することがなく、吸入流路内の薬液の強制的な脈動を軽減することができ、薬液注入爪等からの液だれを防止して、薬液の注入・停止を確実に制御することができる。
また、前記薬液流確認計を固定するための支持体を備え、該支持体には階段状の取付部を設けるので、薬液流確認計を、前記取付部に上下方向にずらして配置することができ、隣接する薬液流確認計間の空間を拡大できるため、薬液流確認計の支持体からの着脱が容易となり、メンテナンス性の向上を図ることができる。
請求項2においては、前記間欠駆動ポンプの各組において、両間欠駆動ポンプ間における薬液吸入時期の位相を略180度ずらすので、一方の間欠駆動ポンプの薬液吸入時期と、他方の間欠駆動ポンプの薬液吸入休止時期とを完全に一致させることができ、薬液タンクから分岐構造までの吸入流路を両間欠駆動ポンプが同時に使用することがないため、薬液タンクから分岐構造までの吸入流路を、分岐構造から両間欠駆動ポンプまでの吸入流路よりも拡径する必要がなく、同一規格のホース部品を使用することができ、部品共通化による部品コストの低減を図ることができる。更には、両間欠駆動ポンプのいずれかより薬液注入爪に薬液を常時供給することができ、間欠駆動に起因する未注入期間を完全になくし、消毒作業の作業効率を更に高めることができる。
Since this invention was comprised as mentioned above, there exists an effect shown below.
That is, according to the first aspect of the present invention, there is provided a chemical tank that is mounted on a traveling vehicle and stores a chemical liquid for disinfection, and a plurality of intermittent drive pumps that intermittently inhale and discharge the chemical liquid from the chemical tank. In a soil disinfecting machine in which the phase of the chemical solution suction timing between the drive pumps is different at least in part, the chemical solution from the chemical solution tank is branched in the middle of the suction flow path from the chemical solution tank to the intermittent drive pump, and each intermittent drive pump Since a branch structure for inhaling is provided, the number of suction ends of the suction flow path such as a suction hose can be reduced, disinfection work can be performed with a small number of chemical tanks, and the number of opened chemical tanks can be reduced. The corrosion of the chemical tank body caused by moisture that has entered the chemical tank generated by opening the can, promotes corrosion of the chemical liquid tank body, the outflow of chemical liquid gas from the gap between the chemical liquid tank body and the can lid, and exposure to the outside air The quality deterioration of the chemical itself due, it is possible to prevent. Furthermore, it is possible to secure a space for loading a spare chemical tank on the soil disinfecting machine, and there is no need to return the chemical tank containing the same or different chemical liquid to the chemical tank storage place during the disinfection work. In addition, the work range can be expanded and the chemical solution used can be changed quickly even during the work, and the disinfection work efficiency can be further improved.
Also, if the phase of the chemical solution suction timing between the intermittent drive pumps is exactly the same, the intake flow path from the chemical solution tank to the branch structure is used simultaneously by a plurality of intermittent drive pumps, so avoiding a significant increase in diameter. However, under the condition that the phase of the chemical solution suction timing is at least different as in the present invention, it can be used in a distributed manner and inserted into the chemical solution outlet of the chemical solution tank while suppressing the diameter expansion of the suction end of the suction channel. The number of possible suction ends can be increased as much as possible, and the effects of the above-described branch structure can be more effectively exhibited.
In addition , a chemical flow confirmation meter for confirming the chemical flow is provided in the middle of at least one of the discharge flow path from the intermittent drive pump to the chemical discharge outlet and the suction flow path, and the chemical flow confirmation meter Is provided with a floating body that reciprocates due to the pulsation of the chemical liquid that is intermittently drawn or discharged by the intermittent drive pump, and the reciprocating direction of the floating body is set to a substantially vertical direction. The moving body does not vibrate greatly in the reciprocating direction due to vibrations caused by running or turning, and the forced pulsation of the chemical in the suction flow path can be reduced, and the liquid dripping from the liquid injection claw etc. It is possible to reliably control the injection / stop of the chemical solution.
In addition, since the support for fixing the chemical flow confirmation meter is provided, and the support is provided with a step-like attachment portion, the chemical flow confirmation meter can be arranged on the attachment portion while being shifted in the vertical direction. In addition, since the space between the adjacent chemical flow confirmation meters can be expanded, the chemical flow confirmation meter can be easily attached to and detached from the support, and the maintainability can be improved.
In the second aspect of the present invention, since the phase of the chemical solution suction timing between the two intermittent drive pumps is shifted by about 180 degrees in each pair of the intermittent drive pumps, the chemical solution suction timing of one intermittent drive pump and the other intermittent drive pump The chemical liquid suction suspension time can be completely matched, and since the both intermittent drive pumps do not use the suction flow path from the chemical liquid tank to the branch structure at the same time, the suction flow path from the chemical liquid tank to the branch structure is It is not necessary to expand the diameter of the suction flow path from the branch structure to the both intermittent drive pumps, the same standard hose parts can be used, and the parts cost can be reduced by sharing the parts. Furthermore, the chemical solution can be constantly supplied from either one of the two intermittent drive pumps to the chemical solution injection claw, so that the non-injection period caused by the intermittent drive can be completely eliminated, and the work efficiency of the disinfection operation can be further improved.

次に、発明の実施の形態を説明する。図1は本発明に関わる土壌消毒機の全体構成を示す斜視図、図2は同じく側面図、図3は薬液供給構成を示す説明図、図4は薬液流確認計の構造を示す薬液流確認計の斜視図、図5は取付プレートの構造を示す取付プレートの斜視図である。   Next, embodiments of the invention will be described. FIG. 1 is a perspective view showing the overall configuration of a soil disinfecting machine according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is an explanatory diagram showing a chemical supply configuration, and FIG. 4 is a chemical flow confirmation showing the structure of a chemical flow confirmation meter. FIG. 5 is a perspective view of the mounting plate showing the structure of the mounting plate.

まず、本発明に係わる土壌消毒機1の全体構成について、図1、図2により説明する。なお、本実施例の土壌消毒機1は、トラクタ等の走行車輌2の後部に装着する牽引タイプであるが、走行車輌2の前部にポンプやタンクを装着するタイプでもよく、装着位置や移動形式は特に限定されるものではない。この走行車輌2のトップリンクとロアリンクが、土壌消毒機1の本体前部のトップリンクマスト3に装着され、該トップリンクマスト3の左右両側にはサブソイラ4L・4Rが配置され、該サブソイラ4L・4Rは、走行車輌2のタイヤの通過位置を通るように構成している。   First, the whole structure of the soil disinfector 1 concerning this invention is demonstrated with FIG. 1, FIG. The soil disinfecting machine 1 according to the present embodiment is a towing type that is attached to the rear part of the traveling vehicle 2 such as a tractor, but may be a type in which a pump or a tank is attached to the front part of the traveling vehicle 2. The format is not particularly limited. The top link and the lower link of the traveling vehicle 2 are attached to the top link mast 3 at the front of the main body of the soil disinfecting machine 1, and sub soilers 4L and 4R are arranged on the left and right sides of the top link mast 3, and the sub soiler 4L -4R is comprised so that the passing position of the tire of the traveling vehicle 2 may be passed.

前記サブソイラ4の後部には、後方に開いた平面視コ字状のメインフレーム5が配置され、該メインフレーム5には複数の薬液注入爪6・6・・・が配置されている。そして、該薬液注入爪6・6・・・の後部には、駆動部9と、該駆動部9によって間欠駆動される第一薬液ポンプ7と第二薬液ポンプ8が機体左右方向に複数組配置され、これら駆動部9、第一薬液ポンプ7、第二薬液ポンプ8は、前記メインフレーム5に連結された支持フレーム10によって支持されている。   At the rear of the subsoiler 4, a U-shaped main frame 5 opened rearward is disposed, and a plurality of chemical liquid injection claws 6, 6,. In the rear part of the chemical liquid injection claws 6, 6..., A drive unit 9, and a plurality of first chemical liquid pumps 7 and a plurality of second chemical liquid pumps 8 that are intermittently driven by the drive unit 9 are arranged in the lateral direction of the body. The drive unit 9, the first chemical liquid pump 7, and the second chemical liquid pump 8 are supported by a support frame 10 connected to the main frame 5.

前記メインフレーム5の上方には、薬液タンク12を載置するタンク載置台11・11が配置され、該左右のタンク載置台11の間には、前記メインフレーム5の後部に立設されたポール13の上端に固定された取付プレート14が配置され、該取付プレート14には複数の薬液流確認計15が取り付けられている。   Above the main frame 5, tank mounting tables 11 and 11 for mounting the chemical liquid tank 12 are arranged, and between the left and right tank mounting tables 11, a pole erected at the rear of the main frame 5. An attachment plate 14 fixed to the upper end of 13 is disposed, and a plurality of chemical flow confirmation meters 15 are attached to the attachment plate 14.

前記駆動部9、第一薬液ポンプ7、第二薬液ポンプ8の後部には土壌均平板16が配置され、該土壌均平板16は、前記メインフレーム5の左右端部から後方に突設されると共に、前後フレーム17・17に支持されており、該前後フレーム17上の支持部18を介して前後方向に摺動可能に構成されている。これにより、土のたまり量が多くて駆動輪19の回転に支障をきたす場合には、土壌均平板16を後方へ移動させることができる。   A soil leveling plate 16 is disposed at the rear of the drive unit 9, the first chemical solution pump 7, and the second chemical solution pump 8, and the soil leveling plate 16 projects rearward from the left and right end portions of the main frame 5. At the same time, it is supported by the front and rear frames 17 and 17 and is configured to be slidable in the front-rear direction via a support portion 18 on the front and rear frame 17. Thereby, when the amount of soil accumulation is large and the rotation of the drive wheel 19 is hindered, the soil leveling plate 16 can be moved backward.

該土壌均平板16の左右側方位置には、溝切りディスク20L・20Rが配置されており、該溝切りディスク20L・20Rは、前記前後フレーム17・17後端部の折り畳み部21・21に枢支されるL字型の支持フレーム22・22に支持されている。該支持フレーム22・22には、マルチフィルム23を巻いた状態のフィルム筒24が架設支持され、該フィルム筒24は、前記溝切りディスク20の後方位置に配置されている。   Grooving discs 20L and 20R are arranged at the left and right side positions of the soil leveling plate 16, and the grooving discs 20L and 20R are arranged on the folding portions 21 and 21 at the rear end portions of the front and rear frames 17 and 17, respectively. It is supported by L-shaped support frames 22 and 22 that are pivotally supported. On the support frames 22, 22, a film cylinder 24 in a state where a multi-film 23 is wound is installed and supported, and the film cylinder 24 is disposed at a rear position of the grooving disk 20.

該フィルム筒24の後部には、フィルム押圧輪25・25と覆土ディスク26・26が配置され、該フィルム押圧輪25・25と覆土ディスク26・26は、前記支持フレーム22の後端部に枢支される解除支持フレーム27に支持されている。該解除支持フレーム27は、バネ28の付勢力によって上方へ回動解除可能に構成されており、作業終了後は、上方へ回動して収納位置に維持されるようにしている。   Film pressing wheels 25 and 25 and soil covering disks 26 and 26 are arranged at the rear of the film cylinder 24. The film pressing wheels 25 and 25 and the soil covering disks 26 and 26 are pivoted to the rear end of the support frame 22. It is supported by the supported release support frame 27. The release support frame 27 is configured such that it can be pivoted upward by the urging force of the spring 28, and is pivoted upward and maintained at the storage position after the work is completed.

このような構成において、消毒作業時には、前記サブソイラ4L・4Rにより走行車輌2のタイヤの軌跡を消した後、薬液注入爪6・6・・・により薬液を土壌内に注入し、この土壌の上を駆動部9の駆動輪19・19・・・にて鎮圧することにより薬液を圧封し、その後、土壌均平板16により土壌表面を均平にし、溝切りディスク20L・20Rにより土壌に溝を設け、該溝にフィルム筒24のマルチフィルム23の左右の端部をフィルム押圧輪25により押圧した状態で、覆土ディスク26にて覆土し、これにより、マルチフィルム23が風で飛ぶことのないように押さえ、消毒力の強い薬液が気化してマルチフィルム23の下に滞留し、土壌内を完全に消毒できるようにしている。   In such a configuration, at the time of disinfection, the trajectory of the tire of the traveling vehicle 2 is erased by the subsoilers 4L and 4R, and then the chemical solution is injected into the soil by the chemical solution injection claws 6, 6,. Is compressed by the drive wheels 19, 19... Of the drive unit 9, and then the soil surface is leveled by the soil leveling plate 16, and the grooves are formed in the soil by the grooving disks 20 L and 20 R. In the groove, the left and right ends of the multi-film 23 of the film cylinder 24 are pressed by the film-pressing wheel 25 and covered with a soil-covering disk 26, so that the multi-film 23 is not blown by wind. The chemical solution with strong disinfecting power is vaporized and stays under the multi-film 23 so that the soil can be completely disinfected.

次に、前記薬液ポンプ7・8による薬液タンク12から薬液注入爪6までの薬液供給構成について、図3により説明する。前記薬液タンク12上部には薬液取出口12aが開口され、該薬液取出口12aから、薬液タンク12の内部に吸入ホース29の吸入端29aが挿入され、該吸入端29aは、薬液タンク12内に貯溜された薬液51中に浸漬されている。そして、この吸入ホース29は、途中の分岐部29cで、前記吸入端29aに連通する1本のタンク側ホース29bから、第一ポンプ側ホース29dと第二ポンプ側ホース29eとの2本のホースに分岐した後、それぞれ第一薬液流確認計15aと第二薬液流確認計15bを介して、前記第一薬液ポンプ7の吸入弁36と第二薬液ポンプ8の吸入弁38とに接続されている。   Next, the chemical solution supply configuration from the chemical solution tank 12 to the chemical solution injection claw 6 by the chemical solution pumps 7 and 8 will be described with reference to FIG. A chemical solution outlet 12 a is opened at the top of the chemical solution tank 12, and a suction end 29 a of a suction hose 29 is inserted into the chemical solution tank 12 from the chemical solution outlet 12 a, and the suction end 29 a is inserted into the chemical solution tank 12. It is immersed in the stored chemical solution 51. The suction hose 29 has two branches, a first pump side hose 29d and a second pump side hose 29e, from one tank side hose 29b communicating with the suction end 29a at a branch portion 29c. Are branched to the suction valve 36 of the first chemical liquid pump 7 and the suction valve 38 of the second chemical liquid pump 8 via the first chemical liquid flow confirmation meter 15a and the second chemical liquid flow confirmation meter 15b, respectively. Yes.

この第一薬液ポンプ7は、該吸入弁36と吐出弁37とを上方に突設する固定壁47と、該固定壁47の下部に取り付けられたダイヤフラム可動壁48と、これら固定壁47とダイヤフラム可動壁48との間に形成される図示せぬポンプ室とから構成され、該ダイヤフラム可動壁48は弾性材料から成ると共に、その下部中央部は、ロッド43を介してカムフォロワ45に連結されている。そして、該カムフォロワ45は、前記駆動輪19間に横架された枢支軸40に中心が固定された第一カム41上に当接されている。   The first chemical pump 7 includes a fixed wall 47 that projects the suction valve 36 and the discharge valve 37 upward, a diaphragm movable wall 48 that is attached to the lower part of the fixed wall 47, and the fixed wall 47 and the diaphragm. A diaphragm chamber (not shown) formed between the movable wall 48 and the diaphragm movable wall 48 is made of an elastic material, and a lower central portion thereof is connected to the cam follower 45 via a rod 43. . The cam follower 45 abuts on a first cam 41 whose center is fixed to a pivot shaft 40 that is horizontally mounted between the drive wheels 19.

第二薬液ポンプ8においても同様に、前記吸入弁38と吐出弁39とを上方に突設する固定壁49と、該固定壁49の下部に取り付けられたダイヤフラム可動壁50と、これら固定壁49とダイヤフラム可動壁50との間に形成される図示せぬポンプ室とから構成され、該ダイヤフラム可動壁50の下部中央部は、ロッド44を介してカムフォロワ46に連結され、該カムフォロワ46も前記枢支軸40に固定された第二カム42上に当接されている。   Similarly, in the second chemical pump 8, a fixed wall 49 that projects the suction valve 38 and the discharge valve 39 upward, a diaphragm movable wall 50 attached to a lower portion of the fixed wall 49, and these fixed walls 49. And a pump chamber (not shown) formed between the diaphragm movable wall 50 and a lower central portion of the diaphragm movable wall 50 is connected to a cam follower 46 via a rod 44, and the cam follower 46 is also connected to the pivot. It abuts on a second cam 42 fixed to the support shaft 40.

そして、該第二カム42の外周には凸部42aと凹部42bとが交互に形成され、前記第一カム41の外周にも凸部41aと凹部41bが交互に形成されており、第一カム41の凸部41a・凹部41bと、第二カム42の凸部42a・凹部42bとは、枢支軸40に対して、軸芯方向視でそれぞれが重複しないように配設されている。   And the convex part 42a and the recessed part 42b are alternately formed in the outer periphery of this 2nd cam 42, and the convex part 41a and the recessed part 41b are alternately formed in the outer periphery of the said 1st cam 41, The 1st cam The convex portion 41a / concave portion 41b of 41 and the convex portion 42a / concave portion 42b of the second cam 42 are arranged so as not to overlap each other with respect to the pivot shaft 40 when viewed in the axial direction.

このような構成において、走行車輌によって牽引されて土壌消毒機1が移動し、駆動輪19が回転されると、枢支軸40が回転して前記カム41・42によって、ダイヤフラム可動壁48・50の一方が下降して他方が上昇する。例えば、ダイヤフラム可動壁48が下降しダイヤフラム可動壁50が上昇した際には、第一薬液ポンプ7のポンプ室容積が拡大し、前記薬液タンク12内の薬液51が、吸入端29a、タンク側ホース29b、分岐部29c、ポンプ側ホース29d、薬液流確認計15a、吸入弁36を介して、第一薬液ポンプ7のポンプ室内に吸入される。この吸入された薬液は、次に、ダイヤフラム可動壁48が上昇しダイヤフラム可動壁50が下降し、第一薬液ポンプ7のポンプ室容積が縮小した際に、ポンプ室内から吐出弁37を介して第一吐出ホース30に吐き出される。   In such a configuration, when the soil disinfector 1 is moved by being pulled by the traveling vehicle and the driving wheel 19 is rotated, the pivot shaft 40 is rotated and the diaphragm movable walls 48 and 50 are rotated by the cams 41 and 42. One of them goes down and the other goes up. For example, when the diaphragm movable wall 48 is lowered and the diaphragm movable wall 50 is raised, the volume of the pump chamber of the first chemical liquid pump 7 is expanded, and the chemical liquid 51 in the chemical liquid tank 12 is supplied to the suction end 29a and the tank side hose. 29b, the branching portion 29c, the pump side hose 29d, the chemical liquid flow check meter 15a, and the suction valve 36 are sucked into the pump chamber of the first chemical liquid pump 7. Next, when the diaphragm movable wall 48 is raised and the diaphragm movable wall 50 is lowered and the pump chamber volume of the first chemical liquid pump 7 is reduced, the inhaled chemical liquid is first discharged from the pump chamber through the discharge valve 37. It is discharged to one discharge hose 30.

第二薬液ポンプ8についても同様に、ポンプ室容積の拡大・縮小に伴って、前記第一薬液ポンプ7とは逆のタイミングで、薬液タンク12内の薬液51が、吸入端29a、タンク側ホース29b、分岐部29c、ポンプ側ホース29e、薬液流確認計15b、吸入弁38を介して、第二薬液ポンプ8のポンプ室内に吸入され、更に、該ポンプ室内から吐出弁39を介して第二吐出ホース31に吐き出される。   Similarly for the second chemical pump 8, the chemical liquid 51 in the chemical liquid tank 12 is supplied to the suction end 29 a, the tank side hose at the timing opposite to that of the first chemical liquid pump 7 as the pump chamber volume is enlarged or reduced. 29b, the branch portion 29c, the pump side hose 29e, the chemical flow confirmation meter 15b, and the suction valve 38 are sucked into the pump chamber of the second chemical pump 8 and further from the pump chamber through the discharge valve 39 to the second It is discharged to the discharge hose 31.

つまり、第一薬液ポンプ7が薬液51を吸入している間(以下「薬液吸入時期」とする)には、第二薬液ポンプ8は、薬液51の吸入を休止して吐出を行っており(以下「薬液吸入休止時期」とする)、第一薬液ポンプ7が薬液51を吐出している間は、第二薬液ポンプ8は、薬液51の吐出を休止して吸入を行っているのである。しかも、このような第一薬液ポンプ7、第二薬液ポンプ8のいずれにおいても、共通の吸入端29aから薬液51を吸入するようにしている。   That is, while the first chemical liquid pump 7 is inhaling the chemical liquid 51 (hereinafter referred to as “chemical liquid inhalation timing”), the second chemical liquid pump 8 pauses the inhalation of the chemical liquid 51 and performs the discharge ( (Hereinafter referred to as “medical solution suction stop timing”), while the first chemical pump 7 is discharging the chemical 51, the second chemical pump 8 stops the discharge of the chemical 51 and performs the inhalation. Moreover, in both the first chemical liquid pump 7 and the second chemical liquid pump 8, the chemical liquid 51 is sucked from the common suction end 29a.

また、前記薬液注入爪6の背面には、深い位置に吐出口34aを開口した第一薬液注入ノズル34と、浅い位置に吐出口35aを開口した第二薬液注入ノズル35とが固定され、これら第一薬液注入ノズル34と第二薬液注入ノズル35に、それぞれ前記第一吐出ホース30と第二吐出ホース31が接続されており、前記第一薬液ポンプ7と第二薬液ポンプ8からの薬液が異なる深さに交互に注入されるようにしている。これにより、走行中、前後方向の第一薬液注入ノズル34の注入円の間に、第二薬液注入ノズル35の注入円が入り込む形で薬液が注入され、未注入範囲が小さくなり、薬液注入による消毒範囲が広がり、消毒効果がより大きくなるようにしている。   Further, a first chemical liquid injection nozzle 34 having a discharge port 34a opened at a deep position and a second chemical liquid injection nozzle 35 having a discharge port 35a opened at a shallow position are fixed to the rear surface of the chemical liquid injection claw 6. The first discharge hose 30 and the second discharge hose 31 are connected to the first chemical liquid injection nozzle 34 and the second chemical liquid injection nozzle 35, respectively, and the chemical liquid from the first chemical liquid pump 7 and the second chemical liquid pump 8 is supplied. The different depths are injected alternately. As a result, during traveling, the chemical solution is injected in such a manner that the injection circle of the second chemical solution injection nozzle 35 enters between the injection circles of the first chemical solution injection nozzle 34 in the front-rear direction, the uninjected range is reduced, and the chemical solution injection The range of disinfection has been expanded so that the disinfection effect is greater.

なお、前記第一吐出ホース30・第二吐出ホース31の途中部には、それぞれ第一コック32・第二コック33が介設され、このうちの第一コック32の開閉操作により、第一薬液注入ノズル34による薬液の注入・停止、第二コック33の開閉操作により、第二薬液注入ノズル35による薬液の注入・停止を操作できるようにしている。   A first cock 32 and a second cock 33 are interposed in the middle of the first discharge hose 30 and the second discharge hose 31, respectively. The injection / stop of the chemical solution by the injection nozzle 34 and the opening / closing operation of the second cock 33 enable the injection / stop of the chemical solution by the second chemical solution injection nozzle 35.

すなわち、走行車輌2に装着され、消毒用の薬液51を貯溜する薬液タンク12と、該薬液タンク12からの薬液51を間欠的に吸入し吐出する複数の間欠駆動ポンプである第一薬液ポンプ7・第二薬液ポンプ8とを備え、該第一薬液ポンプ7と第二薬液ポンプ8間における薬液吸入時期の位相が少なくとも一部で異なる土壌消毒機1において、前記薬液タンク12から第一薬液ポンプ7・第二薬液ポンプ8までの吸入流路である吸入ホース29の途中部に、薬液タンク12からの薬液51を分岐して第一薬液ポンプ7と第二薬液ポンプ8に吸入させる分岐構造である分岐部29cを設けたので、吸入ホース29等の吸入流路の吸入端の数を減らして、少ない薬液タンク12で消毒作業を実施することができ、開缶済みの薬液タンク12の数を減らして、開缶により発生する、薬液タンク中に浸入した水分による薬液タンク本体の腐食促進、該薬液タンク本体と缶蓋との隙間からの薬液ガスの流出、外気に暴露されたことによる薬液自体の品質劣化を、防止することができる。更に、土壌消毒機1に予備の薬液タンクを積載するための空間を確保することができ、同種又は異種の薬液の入った薬液タンクを薬液タンク保管所等まで消毒作業中に取りに戻る必要がなくなり、作業範囲の拡大や使用薬液の変更を作業中でも迅速に行うことができ、消毒作業効率の更なる向上を図ることができる。また、第一薬液ポンプ7と第二薬液ポンプ8間における薬液吸入時期の位相が全く同じ場合には、薬液タンク12から分岐部29cまでの吸入流路であるタンク側ホース29bは、第一薬液ポンプ7と第二薬液ポンプ8によって同時に使用されるために著しい拡径化が避けられないが、本発明のように薬液吸入時期の位相が少なくとも一部で異なるという条件下では、分散使用が可能であり、タンク側ホース29bの吸入端29aの拡径を抑制して薬液タンク12の薬液取出口12aに挿入可能な吸入端29aの数をできるだけ多くすることができ、上述の分岐構造である分岐部29cの効果を更に有効に発揮することができるのである。   That is, the chemical liquid tank 12 that is mounted on the traveling vehicle 2 and stores the chemical liquid 51 for disinfection, and the first chemical liquid pump 7 that is a plurality of intermittent drive pumps that intermittently inhale and discharge the chemical liquid 51 from the chemical liquid tank 12. In the soil disinfecting machine 1 that includes the second chemical pump 8 and the phase of the chemical liquid suction timing between the first chemical pump 7 and the second chemical pump 8 is at least partially different from the first chemical pump 12 from the chemical tank 12. 7. A branch structure in which the chemical liquid 51 from the chemical liquid tank 12 is branched to the first chemical liquid pump 7 and the second chemical liquid pump 8 in the middle of the suction hose 29 that is the suction flow path to the second chemical liquid pump 8. Since a certain branch portion 29c is provided, the number of suction ends of the suction flow path such as the suction hose 29 can be reduced, and the disinfection operation can be performed with a small number of chemical solution tanks 12, and the number of opened chemical solution tanks 12 can be reduced. Reduced and chemicals generated by opening the can, corrosion of the chemical tank main body due to moisture entering the chemical liquid tank, outflow of chemical liquid gas from the gap between the chemical liquid tank main body and the can lid, chemical liquid itself by being exposed to the outside air Quality degradation can be prevented. In addition, it is possible to secure a space for loading a spare chemical tank on the soil disinfecting machine 1, and it is necessary to return the chemical tank containing the same or different chemical liquid to the chemical tank storage or the like during disinfection work. Thus, the working range can be expanded and the chemical solution used can be changed quickly even during the work, and the disinfection work efficiency can be further improved. When the phase of the chemical solution suction timing between the first chemical solution pump 7 and the second chemical solution pump 8 is exactly the same, the tank side hose 29b, which is the suction flow path from the chemical solution tank 12 to the branch portion 29c, Since the pump 7 and the second chemical pump 8 are used at the same time, a significant increase in diameter is unavoidable. The diameter of the suction end 29a of the tank side hose 29b can be suppressed to increase the number of suction ends 29a that can be inserted into the chemical solution outlet 12a of the chemical solution tank 12 as much as possible. The effect of the portion 29c can be more effectively exhibited.

更に、本実施例のように、各組の前記第一薬液ポンプ7・第二薬液ポンプ8において、両薬液ポンプ7・8間における薬液吸入時期の位相を略180度ずらすと、一方の間欠駆動ポンプの薬液吸入時期と、他方の間欠駆動ポンプの薬液吸入休止時期とを完全に一致させることができ、薬液タンク12から分岐構造である分岐部29cまでの吸入流路であるタンク側ホース29bを第一薬液ポンプ7・第二薬液ポンプ8が同時に使用することがないため、タンク側ホース29bを、分岐部29cから第一薬液ポンプ7・第二薬液ポンプ8までの吸入流路であるポンプ側ホース29d・29eよりも拡径する必要がなく、同一規格のホース部品を使用することができ、部品共通化による部品コストの低減を図ることができる。更には、第一薬液ポンプ7・第二薬液ポンプ8のいずれかより薬液注入爪6に薬液を常時供給することができ、間欠駆動に起因する未注入期間を完全になくし、消毒作業の作業効率を更に高めることができる。   Further, as in this embodiment, in the first chemical pump 7 and the second chemical pump 8 of each set, if the phase of the chemical solution suction timing between the chemical pumps 7 and 8 is shifted by approximately 180 degrees, one intermittent drive is performed. The chemical solution suction timing of the pump and the chemical solution suction stop timing of the other intermittently driven pump can be completely matched, and the tank side hose 29b that is a suction flow path from the chemical solution tank 12 to the branching portion 29c having a branch structure is provided. Since the first chemical liquid pump 7 and the second chemical liquid pump 8 are not used at the same time, the tank side hose 29b is connected to the pump side which is a suction flow path from the branch portion 29c to the first chemical liquid pump 7 and the second chemical liquid pump 8. It is not necessary to expand the diameter of the hoses 29d and 29e, hose parts of the same standard can be used, and part cost can be reduced by sharing parts. Furthermore, the chemical solution can be constantly supplied from either the first chemical solution pump 7 or the second chemical solution pump 8 to the chemical injection claw 6, completely eliminating the non-injection period due to intermittent drive, and the work efficiency of the disinfection work Can be further increased.

なお、本実施例では、左右方向に所定間隔をあけて配設された各薬液注入爪に、深さを変えて複数の吐出口を設け、該吐出口から薬液を異なる深さに注入するようにしているが、各薬液注入爪には単一の吐出口を設け、所定の深さのみに薬液を注入するようにしてもよく、また、間欠駆動ポンプの各組の数を3個以上として、特定の間欠駆動ポンプが他の間欠駆動ポンプと同位相であってもよい。すなわち、薬液吸入時期の位相が一部でも異なる土壌消毒機であればよく、薬液の吐出位置、各組の間欠駆動ポンプ数等に限定されるものではない。   In the present embodiment, a plurality of discharge ports are provided at different depths in each chemical solution injection nail arranged at a predetermined interval in the left-right direction, and the chemical solution is injected from the discharge ports to different depths. However, each chemical injection nail may be provided with a single discharge port to inject the chemical only at a predetermined depth, and the number of groups of intermittent drive pumps is set to 3 or more. The specific intermittent drive pump may be in the same phase as other intermittent drive pumps. In other words, any soil disinfecting machine may be used, even if the phase of the chemical solution inhalation phase is partially different, and is not limited to the discharge position of the chemical solution, the number of intermittent drive pumps in each group, and the like.

次に、薬液流確認計15の構造について、前記第一薬液流確認計15aをもとに図4により説明する。なお、他の薬液流確認計についても同じ構造を有する。第一薬液流確認計15aは、前記ポンプ側ホース29dの途中に吸入流路の一部を構成するように、硬質ガラス又は樹脂等から成る透明なのぞき窓53を少なくとも一部に設けたパイプ状の筒体52が挿入され、該筒体52に、例えば浮子から成る遊動体55と、該遊動体55に付勢力を付与するバネ54とが収納されて構成されている。該遊動体55は、筒体52内をその長さ方向に往復移動可能であり、前記バネ54によって筒体52内の所定位置に保たれるように収納されている。   Next, the structure of the chemical flow confirmation meter 15 will be described with reference to FIG. 4 based on the first chemical flow confirmation meter 15a. The other chemical flow confirmation meters have the same structure. The first chemical flow confirmation meter 15a has a pipe-like shape in which a transparent observation window 53 made of hard glass or resin is provided at least partially so as to constitute a part of the suction flow path in the middle of the pump side hose 29d. The cylindrical body 52 is inserted, and a floating body 55 made of, for example, a float and a spring 54 for applying a biasing force to the floating body 55 are accommodated in the cylindrical body 52. The floating body 55 can reciprocate in the length direction in the cylindrical body 52, and is accommodated so as to be maintained at a predetermined position in the cylindrical body 52 by the spring 54.

前述のようにして、第一薬液ポンプ7によってポンプ側ホース29dに吸入された薬液が前記筒体52内に流入すると、筒体52内に薬液流が生じ、該薬液流によって、遊動体55は、流れ方向の力を受け、所定位置に保とうとするバネ54による保持力に抗して、流れ方向に移動するようになる。その後、第一薬液ポンプ7によるポンプ側ホース29dへの吸入が停止すると、これに伴い、筒体52内への薬液の流入も停止し、筒体52内の薬液流が停止する。すると、それまで薬液流によって遊動体55が受けていた流れ方向の力も無くなるので、筒体52内でバネ54の保持力に抗して移動していた遊動体55は、元の所定位置に復帰するようになる。このような遊動体55の往復移動の状態を監視することにより、薬液流の有無を確認することができるのである。   As described above, when the chemical liquid sucked into the pump side hose 29d by the first chemical liquid pump 7 flows into the cylindrical body 52, a chemical liquid flow is generated in the cylindrical body 52, and the floating body 55 is caused by the chemical liquid flow. In response to the force in the flow direction, the spring 54 moves in the flow direction against the holding force of the spring 54 that tries to keep it in a predetermined position. Thereafter, when the suction to the pump side hose 29d by the first chemical pump 7 is stopped, the inflow of the chemical liquid into the cylindrical body 52 is also stopped accordingly, and the chemical liquid flow in the cylindrical body 52 is stopped. Then, since the force in the flow direction that the floating body 55 has received by the chemical flow until then disappears, the floating body 55 that has been moved against the holding force of the spring 54 in the cylindrical body 52 returns to the original predetermined position. To come. By monitoring the state of such reciprocating movement of the floating body 55, the presence or absence of the chemical flow can be confirmed.

そして、このような遊動体55の往復移動方向56が略鉛直方向となるように、薬液流確認計15aは立設状態に配設されている。これにより、たとえ、作業中のエンジン駆動や走行・旋回に伴って大きな振動が発生しても、主たる振動成分である水平方向成分が前記往復移動方向56とは一致することがないため、遊動体55の往復動に異常な振動が加算わり遊動体55がピストンとして薬液に作用して大きな脈動が発生するのを、確実に防止することができる。なお、本実施例では、薬液流確認計15は吸入流路である吸入ホース29の途中部にのみ設けているが、吐出流路である第一吐出ホース30や第二吐出ホース31の途中部に設けてもよく、その設置位置は、薬液の脈動が検出可能であれば特に限定されるものではない。   And the chemical | medical solution flow confirmation meter 15a is arrange | positioned in the standing state so that the reciprocation direction 56 of such a floating body 55 may become a substantially vertical direction. As a result, even if a large vibration occurs due to engine driving or running / turning during work, the horizontal component, which is the main vibration component, does not coincide with the reciprocating direction 56. It is possible to reliably prevent abnormal vibrations from being added to the reciprocating motion of 55 and the floating body 55 to act on the chemical liquid as a piston to generate a large pulsation. In the present embodiment, the chemical flow confirmation meter 15 is provided only in the middle of the suction hose 29 that is the suction flow path, but in the middle of the first discharge hose 30 and the second discharge hose 31 that are the discharge flow paths. The installation position is not particularly limited as long as the pulsation of the chemical solution can be detected.

すなわち、間欠駆動ポンプである第一薬液ポンプ7・第二薬液ポンプ8から薬液の吐出口34a・35aまでの吐出流路である第一吐出ホース30・第二吐出ホース31と、前記吸入流路である吸入ホース29との少なくとも一方の途中部に、薬液流を確認するための薬液流確認計15を設け、該薬液流確認計15には、前記第一薬液ポンプ7・第二薬液ポンプ8によって間欠的に吸入または吐出される薬液51の脈動により往復移動する遊動体55を設け、該遊動体55の往復移動方向56を、略鉛直方向に設定するので、作業中のエンジン駆動や走行・旋回に伴う振動のせいで遊動体55が往復移動方向56に大きく振動することがなく、吸入ホース29内の薬液51の強制的な脈動を軽減することができ、薬液注入爪6等からの液だれを防止して、薬液の注入・停止を確実に制御することができるのである。   That is, the first discharge hose 30 and the second discharge hose 31 that are discharge flow paths from the first chemical liquid pump 7 and the second chemical liquid pump 8 that are intermittent drive pumps to the discharge openings 34a and 35a of the chemical liquid, and the suction flow path A chemical flow confirmation meter 15 for confirming the chemical flow is provided in the middle of at least one of the suction hose 29 and the chemical flow confirmation meter 15 includes the first chemical pump 7 and the second chemical pump 8. Since the floating body 55 that reciprocates due to the pulsation of the chemical solution 51 that is intermittently sucked or discharged by the fluid is provided, and the reciprocation direction 56 of the floating body 55 is set in a substantially vertical direction, The floating body 55 does not vibrate greatly in the reciprocating direction 56 due to vibrations associated with the turning, and the forced pulsation of the drug solution 51 in the suction hose 29 can be reduced. Who Prevention to, it is possible to reliably control the injection and stopping of the chemical.

次に、前記取付プレート14の構造について、図5により説明する。該取付プレート14の下部中央部は、前記ポール13上端に押さえ具60によってボルト59で固定されると共に、取付プレート14には階段状に複数の取付部14aが形成されると共に、各取付部14aで階段側の側辺からは支持ステー14bが前方(図5では手前)に突設されている。該支持ステー14bには、前記薬液流確認計15から後方に突設された取付ステー57が、ボルト58によって着脱自在に締結固定されている。   Next, the structure of the mounting plate 14 will be described with reference to FIG. The lower central portion of the mounting plate 14 is fixed to the upper end of the pole 13 with a bolt 59 by a presser 60, and a plurality of mounting portions 14a are formed on the mounting plate 14 in a stepped manner, and each mounting portion 14a. Thus, a support stay 14b is projected forward (front side in FIG. 5) from the side of the staircase. An attachment stay 57 protruding rearward from the chemical flow check meter 15 is fastened and fixed to the support stay 14b by a bolt 58 so as to be detachable.

このような構成において、薬液流確認計15を固定した支持ステー14bと、該薬液流確認計15に隣接する薬液流確認計15との間には、上下方向に広い作業空間を確保することができ、薬液流確認計15内のバネ54が腐食されて交換する必要が生じた場合等には、前記ボルト58の着脱を前記作業空間で容易に実施することができる。   In such a configuration, it is possible to secure a wide working space in the vertical direction between the support stay 14 b to which the chemical flow confirmation meter 15 is fixed and the chemical flow confirmation meter 15 adjacent to the chemical flow confirmation meter 15. If the spring 54 in the chemical flow check meter 15 is corroded and needs to be replaced, the bolt 58 can be easily attached and detached in the work space.

すなわち、前記薬液流確認計15を固定するための支持体である取付プレート14を備え、該取付プレート14には階段状の取付部14aを設けるので、薬液流確認計15を、前記取付部14aに上下方向にずらして配置することができ、隣接する薬液流確認計15間の空間を拡大できるため、薬液流確認計15の取付プレート14からの着脱が容易となり、メンテナンス性の向上を図ることができる。   That is, a mounting plate 14 is provided as a support for fixing the chemical flow confirmation meter 15, and the mounting plate 14 is provided with a stepped mounting portion 14a. Therefore, the chemical flow confirmation meter 15 is attached to the mounting portion 14a. Since the space between the adjacent chemical flow confirmation meters 15 can be expanded, the chemical flow confirmation meter 15 can be easily attached to and detached from the mounting plate 14 and the maintainability is improved. Can do.

本発明は、土壌消毒機だけでなく、間欠駆動タイプのポンプを備えたあらゆる液体吐出装置に適用することができる。   The present invention can be applied not only to a soil disinfector, but also to any liquid ejection device provided with an intermittent drive type pump.

本発明に関わる土壌消毒機の全体構成を示す斜視図である。It is a perspective view which shows the whole structure of the soil disinfector concerning this invention. 同じく側面図である。It is a side view similarly. 薬液供給構成を示す説明図である。It is explanatory drawing which shows a chemical | medical solution supply structure. 薬液流確認計の構造を示す薬液流確認計の斜視図である。It is a perspective view of a chemical flow confirmation meter showing the structure of a chemical flow confirmation meter. 取付プレートの構造を示す取付プレートの斜視図である。It is a perspective view of the attachment plate which shows the structure of an attachment plate.

1 土壌消毒機
2 走行車輌
7・8 間欠駆動ポンプ
12 薬液タンク
14 支持体
14a 取付部
15 薬液流確認計
29 吸入流路
29c 分岐構造
51 薬液
55 遊動体
56 往復移動方向
DESCRIPTION OF SYMBOLS 1 Soil disinfection machine 2 Traveling vehicle 7.8 Intermittent drive pump 12 Chemical liquid tank 14 Support body 14a Mounting part 15 Chemical liquid flow confirmation meter 29 Suction flow path 29c Branching structure 51 Chemical liquid 55 Moving body 56 Reciprocating direction

Claims (2)

走行車輌(2)に装着され、消毒用の薬液を貯溜する薬液タンク(12)と、該薬液タンク(12)からの薬液を間欠的に吸入し吐出する2組の間欠駆動ポンプ(7・8)とを備え、各間欠駆動ポンプ(7・8)間における薬液吸入時期の位相が少なくとも一部で異なる土壌消毒機において、前記薬液タンク(12)から間欠駆動ポンプ(7・8)までの吸入流路(29)の途中部に、前記薬液タンク(12)からの薬液を分岐して、各間欠駆動ポンプ(7・8)に吸入させる分岐構造(29c)を設け、前記間欠駆動ポンプ(7・8)から薬液の吐出口までの吐出流路と、前記吸入流路(29)との少なくとも一方の途中部に、薬液流を確認するための薬液流確認計(15)を設け、該薬液流確認計(15)には、前記間欠駆動ポンプ(7・8)によって間欠的に吸入または吐出される薬液の脈動により往復移動する遊動体(55)を設け、該遊動体(55)の往復移動方向を、略鉛直方向に設定し、前記薬液流確認計(15)を固定するための取付プレート(14)を備え、該取付プレート(14)には階段状の取付部(14a)を設け、各階段状の取付部(14a)から突設した支持ステー(14b)に、前記薬液流確認計(15)の取付ステー(57)を固定したことを特徴とする土壌消毒機。 A chemical tank (12) that is mounted on the traveling vehicle (2) and stores a chemical liquid for disinfection, and two sets of intermittent drive pumps (7, 8) that intermittently inhale and discharge the chemical liquid from the chemical tank (12) In a soil disinfecting machine in which the phase of the chemical solution suction timing between the intermittent drive pumps (7, 8) differs at least in part, suction from the chemical solution tank (12) to the intermittent drive pump (7.8) A branch structure (29c) for branching the chemical solution from the chemical solution tank (12) and sucking it into each intermittent drive pump (7, 8) is provided in the middle of the flow path (29), and the intermittent drive pump (7 A chemical flow confirmation meter (15) for confirming the chemical flow is provided in the middle of at least one of the discharge flow path from 8) to the chemical discharge outlet and the suction flow path (29). The flow confirmation meter (15) includes the intermittent drive pump (7 8) providing a floating body (55) that reciprocates due to the pulsation of the chemical liquid that is intermittently sucked or discharged in accordance with 8), and sets the reciprocating direction of the floating body (55) in a substantially vertical direction. (15) is provided with a mounting plate (14), the mounting plate (14) is provided with a stepped mounting portion (14a), and a support stay protruding from each stepped mounting portion (14a). (14b) A soil disinfecting machine , wherein an attachment stay (57) of the chemical flow confirmation meter (15) is fixed . 請求項1記載の土壌消毒機において、前記間欠駆動ポンプ(7・8)の各組において、両間欠駆動ポンプ(7・8)間における薬液吸入時期の位相を略180度ずらしたことを特徴とする土壌消毒機。 The soil disinfecting machine according to claim 1, wherein the phase of the chemical solution intake timing between the intermittent drive pumps (7, 8) is shifted by approximately 180 degrees in each set of the intermittent drive pumps (7, 8). Soil disinfection machine.
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JPS5064513U (en) * 1973-10-17 1975-06-11
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JPS5064513U (en) * 1973-10-17 1975-06-11
JPS63116079U (en) * 1987-01-23 1988-07-26

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