JPS6330720Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案はタンクローリ車等に所定量の油液をオ
ーバーフローすることなく給液しうる給液停止装
置に関する。[Detailed Description of the Invention] The present invention relates to a liquid supply stop device that can supply a predetermined amount of oil to a tank truck or the like without overflowing.

一般に、タンクローリ車等に所定量の油液を出
荷する給液出荷装置は第１図に示す構成である。
給液出荷装置１では、タンク２内に油液３を配管
４のポンプ５、空気分離器６、流量計７、定量弁
８を順次介して給送し、更に立上り配管部４ａ、
回動自在のローデイングアーム９、給液停止装置
１０、ドロツプパイプ１１を介してタンクローリ
車１２のハツチ１３内に供給する。この際にはタ
ンクローリ車１２の入場の都度ローデイングアー
ム９を操作してドロツプパイプ１１をハツチ１３
内に移し変え挿入して油液を供給するのである。
そして通常時は定量弁８が所定量給液時に閉弁し
て給液を終了するが、定量弁８が故障したとき等
の非常時には液面が更に上昇し、液面検知パイプ
１４が上限の液面を検知したとき給液停止装置１
０が閉弁状態となり、ハツチ１３から油液がオー
バーフローするのを防止している。 Generally, a liquid supply and shipping device for shipping a predetermined amount of oil to a tank truck or the like has a configuration shown in FIG.
In the liquid supply and shipping device 1, the oil liquid 3 is fed into the tank 2 through the pump 5 of the piping 4, the air separator 6, the flow meter 7, and the metering valve 8 in order, and further the rising piping section 4a,
The liquid is supplied into the hatch 13 of the tank truck 12 via the rotatable loading arm 9, the liquid supply stop device 10, and the drop pipe 11. At this time, each time the tank truck 12 enters, the loading arm 9 is operated to connect the drop pipe 11 to the hatch 13.
The oil is then transferred and inserted inside to supply the oil.
Under normal conditions, the metering valve 8 closes when a predetermined amount of liquid has been supplied to end the liquid supply, but in an emergency such as when the metering valve 8 breaks down, the liquid level rises further and the liquid level detection pipe 14 reaches the upper limit. Liquid supply stop device 1 when liquid level is detected
0 is in a closed state to prevent oil from overflowing from the hatch 13.

上記の如く液面を検知して閉弁状態となる給液
停止装置としては、例えば実願昭57−115423号
「給液停止装置」がある。 An example of a liquid supply stop device that detects the liquid level and closes the valve as described above is ``Liquid Supply Stop Device'' published in Japanese Utility Model Application No. 57-115423.

この装置では、主弁の前後をバイパスする分流
路に分流弁及びベンチユリーを設け、ベンチユリ
ーを液面検知パイプに連通している。これによれ
ば、給液開始時のハンドル操作により主弁の開弁
と共に分流弁もその弁棒が連動的に押上げられて
開弁して液体がバイパス的に流れ、ベンチユリー
に負圧が発生する。 In this device, a diverter valve and a ventilator are provided in a diverter channel that bypasses the main valve before and after the main valve, and the ventilator is communicated with the liquid level detection pipe. According to this, when the handle is operated at the start of liquid supply, the main valve opens, and the valve stem of the diverter valve is also pushed up and opens, allowing liquid to flow in a bypass manner, creating negative pressure in the ventilate. do.

従つて液面が上昇して液面検知パイプ下端を閉
塞すると、液面検知パイプ内にも負圧が発生し
て、この負圧信号によりロツク解除機構が作動し
て主弁体のロツクを解除し閉弁復帰せしめる。こ
のときハンドル及び分流弁も連動的に閉弁復帰す
る。 Therefore, when the liquid level rises and blocks the lower end of the liquid level detection pipe, negative pressure is also generated within the liquid level detection pipe, and this negative pressure signal activates the lock release mechanism to release the lock on the main valve body. and return the valve to closed. At this time, the handle and the diverter valve also return to close in conjunction with each other.

ここで、上記液面上限位置を検出して主弁が閉
弁することは、定量弁８の故障等の原因により正
常な通常給液停止がなされず非常給液停止がなさ
れたことを意味している。従つて、引続き他のハ
ツチへ給液を開始するためには、上記原因を究明
し、この原因に応じた修理を施した後主弁を再び
開弁しなければならない。 Here, if the main valve closes after detecting the liquid level upper limit position, it means that the normal liquid supply was not stopped normally due to a failure of the metering valve 8, etc., and an emergency liquid supply was stopped. ing. Therefore, in order to continue supplying liquid to other hatches, it is necessary to investigate the cause, make repairs according to the cause, and then open the main valve again.

しかるに、非常給液停止時には主弁体はその上
流側に液圧が作用しているため、ハンドル操作で
開弁することは不可能である。従つてまず分流弁
の弁棒を押し上げて分流弁を開弁させてローデイ
ングアーム９中の油液を下流側へ抜き取り上記液
圧を除去した後、ハンドル操作して主弁を開弁さ
せればよい。 However, when the emergency liquid supply is stopped, hydraulic pressure is applied to the upstream side of the main valve element, so it is impossible to open the valve by operating the handle. Therefore, first push up the valve stem of the diverter valve to open the diverter valve, drain the oil in the loading arm 9 to the downstream side and remove the above fluid pressure, and then operate the handle to open the main valve. Bye.

しかるに上記先願に係る給液停止装置では、分
流弁の弁棒の押上げ用突出部は周囲に何らガード
体が設けられていなかつたため、ローリ車の運転
手でも勝手に上記原因の究明、修理のなされる以
前にドライバ等の汎用工具により押上げて開弁さ
せ給液を続行させることができた。従つて、分流
弁の弁棒が傷付き易いと共に、給液出荷装置１の
メインテナンス上重大な故障を生ずるおそれがあ
るという欠点があつた。 However, in the liquid supply stop device according to the above-mentioned prior application, since no guard body was provided around the protrusion for pushing up the valve stem of the diverter valve, even the driver of the lorry car could investigate the cause and repair it without permission. It was possible to push up the valve using a general-purpose tool such as a screwdriver to open the valve and continue liquid supply before this was done. Therefore, there are disadvantages in that the valve stem of the diversion valve is easily damaged, and there is a risk of serious failure during maintenance of the liquid supply and shipping device 1.

本考案は、分流弁の弁棒の突出部の周囲を弁棒
押上専用工具のみ挿入可能のガード体を設け、ガ
ード体によりローリの運転手等が勝手に弁棒を操
作することを禁止すると共に、給液作業監督者の
みが上記専用工具により適正な時期に弁棒を押上
げて分流弁を開弁可能として、上記従来の欠点を
除去した給液停止装置を提供することを目的とす
る。 The object of this device is to provide a liquid supply stop device which eliminates the above-mentioned drawbacks of the conventional method by providing a guard body around the protruding portion of the valve stem of the diversion valve, into which only a special tool for pushing up the valve stem can be inserted, thereby preventing the truck driver or other person from manipulating the valve stem without permission, and allowing only the liquid supply work supervisor to push up the valve stem at the appropriate time using the special tool to open the diversion valve.

そのための構成は、給液管途中に設けられ、弁
座を有する弁本体と、該弁本体に上下動自在に設
けられ該弁座に離着座して液流路の開閉用主弁を
構成する主弁体と、ハンドルを有して前記弁本体
に回動自在に設けられ、該ハンドルの操作により
回動されて該主弁体を連動的に開弁せしめるハン
ドル軸と、前記主弁体を上動開弁位置にロツクす
るロツク機構部と、前記弁本体の該主弁上流側か
ら分岐した分流路と、該分流路途中に設けられ、
該ハンドル軸の回動に連動して弁棒が上下動され
て開閉弁される分流弁と、該分流路途中に液面検
知パイプと連通して設けられ該液面検知パイプが
所定位置に達した液面により閉塞されたとき該液
面検知パイプ内を負圧にせしめるベンチユリー
と、前記負圧の信号を供給されて作動し、前記ロ
ツクを解除し前記主弁を閉弁せしめるロツク解除
機構部とよりなり、前記分流弁の弁棒の突出部周
囲にこれを囲むガード体を設け、該ガード体に弁
棒押上専用工具が挿入される孔部と該孔部の近傍
に該工具の回動支点となる支点部とを設けたもの
である。 The structure for this purpose includes a valve body provided in the middle of the liquid supply pipe and having a valve seat, and a main valve provided on the valve body so as to be movable up and down and seated on and off the valve seat to open and close the liquid flow path. a main valve body, a handle shaft having a handle, which is rotatably provided on the valve body, and which is rotated by operation of the handle to open the main valve body in conjunction with the main valve body; a locking mechanism portion that locks the valve in an upwardly moving valve opening position; a branch passage branching from the upstream side of the main valve of the valve body; and a branch passage provided midway through the branch passage;
A diversion valve whose valve stem is moved up and down in conjunction with the rotation of the handle shaft to open and close the valve, and a diversion valve that is provided midway through the diversion path and communicates with a liquid level detection pipe until the liquid level detection pipe reaches a predetermined position. a ventilator that creates a negative pressure in the liquid level detection pipe when the pipe is blocked by a liquid level; and a lock release mechanism that operates upon being supplied with a signal of the negative pressure to release the lock and close the main valve. Therefore, a guard body is provided around the protrusion of the valve stem of the diverter valve, and a guard body is provided in the guard body to insert a special tool for pushing up the valve stem, and a hole in the vicinity of the hole is provided with a guard body that surrounds the protrusion of the valve stem. A fulcrum portion that serves as a fulcrum is provided.

次に、その一実施例につき説明する。 Next, one example will be explained.

第２図は本考案になる給液停止装置の一実施例
の正面図、第３図Ａ，Ｂは夫々は第２図中Ａ−
Ａ線及びＢ−Ｂ線に沿う断面矢視図であ
る。 FIG. 2 is a front view of an embodiment of the liquid supply stop device according to the present invention, and FIGS. 3A and 3B are A--A in FIG.
FIG. 3 is a cross-sectional view taken along line A and line B-B.

図中、給液停止装置２１は、弁本体２２及びこ
れを閉蓋する上部ケーシング２０を有する。弁本
体２２は、ローデイングアーム９に接続される流
入口２２ａと、ドロツプパイプ１１に接続される
流出口２２ｂと、室２２ｃ下部の弁座部材２３と
を有する。弁座部材２３はリング状弁座２３ａと
リブ部２３ｂを介した中央有底筒状のシリンダ部
２３ｃ（内部がダンパ室２３ｄとなる）とを有し、
シリンダ部２３ｃはその周囲で底面から略寸法l₁
（第９図に示す）の高さ位置に複数の連通孔２３
ｅ（流入口２２ａとダンパ室２３ｄを連通する）
と底部の絞り連通孔２３ｆ（ダンパ室２３ｄと流
出口２２ｂを連通する）とを有している。 In the drawing, the liquid supply stop device 21 has a valve body 22 and an upper casing 20 that closes the valve body 22. The valve body 22 has an inlet 22a connected to the loading arm 9, an outlet 22b connected to the drop pipe 11, and a valve seat member 23 at the bottom of a chamber 22c. The valve seat member 23 has a ring-shaped valve seat 23a and a central bottomed cylindrical cylinder portion 23c (the inside of which becomes a damper chamber 23d) with a rib portion 23b interposed therebetween.
The cylinder portion 23c has a circumference with a dimension of approximately _l1 from the bottom surface.
A plurality of communication holes 23 at the height of (shown in FIG. 9)
e (connects the inlet 22a and the damper chamber 23d)
and a throttle communication hole 23f at the bottom (which communicates between the damper chamber 23d and the outflow port 22b).

２４は主弁体で、弁体部２４ａを有し、上記弁
座２３ａと共に主弁２５を構成する。主弁体２４
はその下部に筒形状ピストン部２４ｂ（中心孔２
４ｃを有する）が突設され、後述する弁体軸２９
と一体的にコイルバネ２６により下方へ付勢さ
れ、弁体部２４ａが弁座２３ａに着座している。
尚ピストン部２４ｂはシリンダ部２３ｃに対し比
較的密に且つ上下動自在に常時嵌入しており、両
者２４ｂ，２３ｃ間に上記ダンパ室２３ｄが主弁
２５の下流側で構成される。 A main valve body 24 has a valve body portion 24a, and constitutes a main valve 25 together with the valve seat 23a. Main valve body 24
has a cylindrical piston part 24b (center hole 2
4c) is provided protrudingly, and a valve body shaft 29 (described later)
The valve body portion 24a is integrally urged downward by the coil spring 26, and the valve body portion 24a is seated on the valve seat 23a.
The piston portion 24b is always fitted relatively tightly into the cylinder portion 23c so as to be vertically movable, and the damper chamber 23d is formed on the downstream side of the main valve 25 between the piston portion 24b and the piston portion 23c.

２７は弁体軸で、中心孔２７ａ、上部孔２７
ｂ、下方段部２７ｃを有し、下方より順次シリン
ダ部２３ｃ、主弁体２４の中心孔２４ｃ及び上部
ケーシング２０の孔２０ａに嵌挿され、しかも段
部２７ｃ及びストツプリング２８間に主弁体２４
が固定されるため、該主弁体２４と一体的に上下
動自在となる。 27 is a valve body shaft, which includes a center hole 27a and an upper hole 27.
b. It has a lower stepped portion 27c, which is fitted into the cylinder portion 23c, the center hole 24c of the main valve body 24, and the hole 20a of the upper casing 20 in order from below, and the main valve body 24 is fitted between the stepped portion 27c and the stop ring 28.
Since it is fixed, it can move up and down integrally with the main valve body 24.

２９はリセツト軸で、弁体軸２７の中心孔２７
ａに相対的に上下動自在に嵌入され、第３図Ａ中
自重により下動してロツド下端が後述する押圧片
４２に当接して停止している。 29 is a reset shaft, which is inserted into the center hole 27 of the valve body shaft 27.
The rod is fitted so as to be movable up and down relative to A, and as shown in FIG. 3A, it moves downward due to its own weight, and the lower end of the rod comes into contact with a pressing piece 42, which will be described later, and stops.

３０は回動自在のハンドル軸で、押圧レバー３
１（第３図Ｂ、第４図に示す）、ハンドル３２、
後述する第２のロツク解除機構部５３を構成する
押圧ピン３３、一対の扇形凸部よりなる第１のク
ラツチ部３４（第８図中斜線で示す）が固着され
る。尚ハンドル３２はねじりバネ３５（第３図Ｂ
に示す）により第３図Ａにおいて下方向へ付勢さ
れている。 30 is a rotatable handle shaft, and a push lever 3
1 (shown in Figures 3B and 4), handle 32,
A pressing pin 33 constituting a second lock release mechanism section 53, which will be described later, and a first clutch section 34 (shown with diagonal lines in FIG. 8) consisting of a pair of fan-shaped convex sections are fixed. The handle 32 is attached to a torsion spring 35 (Fig. 3B).
) is biased downward in FIG. 3A.

４１は二又状のリンクで、ハンドル軸３０に別
体で回転自在に嵌合されており、第７図、第８図
の如く、先端切欠溝４１ａ、上記第２のロツク解
除機構部５３を構成する押圧片４２、一対の扇形
凸部よりなる第２のクラツチ部４３（第８図中梨
地で示す）を有する。リンク４１は切欠溝４１ａ
が弁体軸２７下部にピン４４を介して連結され弁
体軸２７と連動して第３図Ａ、第６図、第７図の
如き閉弁時には、反時計方向回動限に位置する。 Reference numeral 41 denotes a forked link, which is separately rotatably fitted to the handle shaft 30, and as shown in FIGS. It has a pressing piece 42 and a second clutch portion 43 (shown with satin finish in FIG. 8) consisting of a pair of fan-shaped convex portions. The link 41 has a notched groove 41a
is connected to the lower part of the valve body shaft 27 via a pin 44, and in conjunction with the valve body shaft 27, is located at the limit of counterclockwise rotation when the valve is closed as shown in FIGS. 3A, 6, and 7.

４５はロツク機構部で、上部ケーシング２０の
ダイヤフラム膜４６に固着したニードル４７（テ
ーパ部４７ａを有する）と、弁体軸２７の上部孔
２７ｂに収納したボール４８と、中心孔２０ａ上
部のテーパ状リング部材４９とよりなる。 Reference numeral 45 denotes a locking mechanism, which includes a needle 47 (having a tapered part 47a) fixed to the diaphragm membrane 46 of the upper casing 20, a ball 48 housed in the upper hole 27b of the valve shaft 27, and a tapered part at the upper part of the center hole 20a. It consists of a ring member 49.

５０は第１のロツク解除機構部で、上記ダイヤ
フラム膜４６（コイルバネ５１により下方へ付勢
される）と、該ダイヤフラム膜４６により画成さ
れた上室２０ｂ、下室２０ｃとよりなり、上室２
３ｂは第２図、第６図の如く液面検知パイプ５２
を連通され、且つ下室２０ｃは大気に開放され
る。 Reference numeral 50 denotes a first lock release mechanism section, which is composed of the diaphragm membrane 46 (biased downward by a coil spring 51), and an upper chamber 20b and a lower chamber 20c defined by the diaphragm membrane 46. 2
3b is a liquid level detection pipe 52 as shown in FIGS. 2 and 6.
The lower chamber 20c is opened to the atmosphere.

５３は第２のロツク解除機構部で、第７図の如
くハンドル軸３０の軸直交方向に固着した上記押
圧ピン３３と、リンク４１にピン５４により枢支
された上記押圧片４２とよりなり、第３図Ａ、第
６図、第７図の閉弁時には押圧片４２は自重によ
り反時計方向へ回動し押圧ピン３３に当接して停
止している。 Reference numeral 53 denotes a second lock release mechanism section, which consists of the above-mentioned pressing pin 33 fixed in the direction orthogonal to the axis of the handle shaft 30 as shown in FIG. When the valve is closed in FIGS. 3A, 6, and 7, the pressing piece 42 rotates counterclockwise due to its own weight, comes into contact with the pressing pin 33, and stops.

６１は分流弁で、第４図Ａ〜Ｄ、第６図の如
く、室２２ｃと流出口２２ｂとを分流する分流路
６２途中に設けられ、弁本体２２の孔２２ｄに嵌
入固定された分流弁本体６３の弁座６３ａと弁体
６４の弁体部６４ａとよりなる。分流弁本体６３
（弁座６３ａ）は更に中心孔６３ｂと弁本体２２
の下方に突出する円筒形ガード部６３ｃを有し、
ガード部６３ｃは孔６３ｄ、一の軸方向切欠溝６
３ｅ、一の長孔６３ｆ及びその両側の一対の係合
溝６３ｇを有する。弁体６４（弁体部６４ａ）は
更に軸部６４ｂを有し、バネ６５により下方へ付
勢され弁体部６４ａが弁座６３ａに着座して分流
弁６１を閉弁し、且つ軸部６４ｂが中心孔６３ｂ
を挿通してガード部６３ｃの孔６３ｄ内に所定量
突出している。尚押圧レバー３１は切欠溝６３ｅ
を介して孔６３ｄ内に進入し、弁体６４の軸部６
４ｂ下端に対向している。 Reference numeral 61 designates a flow divider valve, which is provided in the middle of the flow divider path 62 that divides the flow between the chamber 22c and the outlet 22b, as shown in FIGS. 4A to D and FIG. 6, and is fitted and fixed into the hole 22d of the valve body 22. It consists of a valve seat 63a of the main body 63 and a valve body portion 64a of the valve body 64. Diversion valve body 63
(The valve seat 63a) is further connected to the center hole 63b and the valve body 22.
It has a cylindrical guard part 63c projecting downward,
The guard portion 63c has a hole 63d and one axial notch groove 6.
3e, one elongated hole 63f and a pair of engagement grooves 63g on both sides thereof. The valve body 64 (valve body part 64a) further has a shaft part 64b, and is urged downward by a spring 65 so that the valve body part 64a seats on the valve seat 63a to close the flow dividing valve 61, and the shaft part 64b is the center hole 63b
is inserted into the hole 63d of the guard portion 63c and protrudes by a predetermined amount. Note that the pressing lever 31 has a notch groove 63e.
The shaft portion 6 of the valve body 64 enters the hole 63d through the hole 63d.
It faces the lower end of 4b.

第５図Ａ，Ｂの６６は弁開用（分流弁の弁棒押
上用）専用工具で、把持部６６ａ、軸部６６ｂ
（一対の係合ピン部６６ｃを有する）、先端押圧部
６６ｄを有する。 Reference numeral 66 in FIGS. 5A and 5B is a special tool for opening the valve (for pushing up the valve stem of the diversion valve), which includes a grip part 66a and a shaft part 66b.
(having a pair of engagement pin parts 66c) and a tip pressing part 66d.

６７は負圧発生部としてのベンチユリーで、第
４図Ａ、第６図の如く、分流路６２の分流弁６１
の下流側に設けられ、液面検知パイプ５２の分岐
管５２ａが開口される。 67 is a ventilator as a negative pressure generating part, and as shown in FIG. 4A and FIG.
A branch pipe 52a of the liquid level detection pipe 52 is opened.

次に、上記給液停止装置２１の操作に付き説明
する。第３図Ａ、第６図は定量弁８が閉弁して後
述の如くローデイングアーム９中の油液を流出さ
せた後ハンドル３２の回動復帰操作により主弁２
５を閉弁させた状態とする。尚ダンパ室２３ｄ内
には空気が満たされている。同図中、ハンドル３
２を操作して第８図の如く第１のクラツチ部３４
をリンク４１の第２のクラツチ部４３にかみ合
せ、この状態でハンドル３２を時計方向へ回動さ
せる。すると、リンク４１が上記クラツチかみ合
いにより同方向へ一体的に回動するため、ピン４
４を介して弁体軸２７及び主弁体２４が連動的に
上動変位し、弁体部２４ａが弁座２３ａから離座
して主弁２５が開弁される。主弁体２４は第９図
の如く大略寸法l₂上動し（但しl₂＞l₁）、流入口２
２ａの油液が主弁２５を介してドロツプパイプ１
１に流れ始め給液が開始される。 Next, the operation of the liquid supply stop device 21 will be explained. 3A and 6, after the metering valve 8 has been closed and the oil in the loading arm 9 has flowed out as described later, the main valve 2 is moved back by rotating the handle 32.
5 is in a closed state. Note that the damper chamber 23d is filled with air. In the figure, handle 3
2 to open the first clutch portion 34 as shown in FIG.
is engaged with the second clutch portion 43 of the link 41, and in this state, the handle 32 is rotated clockwise. Then, the link 41 integrally rotates in the same direction due to the engagement of the clutch, so that the pin 4
4, the valve body shaft 27 and the main valve body 24 are moved upward in conjunction with each other, the valve body portion 24a is separated from the valve seat 23a, and the main valve 25 is opened. As shown in Fig. 9, the main valve body 24 moves upward by approximately dimension l ₂ (however, l ₂ > l ₁ ), and the inlet 2
2a is passed through the main valve 25 to the drop pipe 1.
1, and liquid supply begins.

ここで、上記寸法l₂＞l₁の関係によりピストン
部２４ｂはシリンダ部２３ｃ内を連通孔２３ｅよ
り上方位置まで変位する。従つて流入口２２ａの
油液が連通孔２３ｅを介してダンパ室２３ｄ内に
も流入し、ダンパ室２３ｄ内の空気は絞り連通孔
２３ｆから流出口２２ｂ側へ押出され、ダンパ室
２３ｄ内は油液に置換される。 Here, the piston portion 24b is displaced within the cylinder portion 23c to a position above the communication hole 23e due to the relationship of the above-described dimension l ₂ >l ₁ . Therefore, the oil in the inlet 22a also flows into the damper chamber 23d through the communication hole 23e, the air in the damper chamber 23d is pushed out from the throttle communication hole 23f toward the outlet 22b, and the damper chamber 23d is filled with oil. It is replaced by liquid.

上記弁体軸２７が上動限に至ると同時に、第９
図中相対的にニードル４７のテーパ部４７ａがボ
ール４８を押圧してリング部材４９に押当てるた
め、弁体軸２７は同図の上動位置にロツクされ
る。尚弁体軸２７の上動開始時に押圧片４２もリ
ンク４１に対し相対的に第７図の関係を保つたま
まハンドル軸３０を中心に時計方向へ回動して第
９図の位置に至る。従つて、リセツト軸２９は押
圧片４２により押されて上動し、第９図の如く、
リセツト軸２９上端がニードル４７下端に略接す
る。 At the same time that the valve body shaft 27 reaches its upper limit of movement, the ninth
In the figure, the tapered portion 47a of the needle 47 presses the ball 48 against the ring member 49, so that the valve shaft 27 is locked in the upward position in the figure. When the valve body shaft 27 starts to move upward, the pressing piece 42 also rotates clockwise around the handle shaft 30 while maintaining the relationship shown in FIG. 7 relative to the link 41 to reach the position shown in FIG. 9. . Therefore, the reset shaft 29 is pushed by the pressing piece 42 and moves upward, as shown in FIG.
The upper end of the reset shaft 29 substantially contacts the lower end of the needle 47.

一方、上記ハンドル３２の回動時に第９図の如
く押圧レバー３１が分流弁６１の弁体６４の軸部
６４ｂを介して弁体６４を上方へ押圧変位せし
め、分流弁６１を開弁せしめる。ハンドル軸３０
及び押圧レバー３１はねじりバネ３５の付勢力に
より第９図〜第１１図の下方回動位置に保持され
るため、分流弁６１は開弁状態を保持する。従つ
て、室２２ｃの油液の一部が分流路６２を経由し
て流出口２２ｂに定常的に流れ始めベンチユリ６
７の機能により分岐管５２ａに負圧が発生する。
しかるに、給液開始当初はタンクローリ車のハツ
チ１３内の液面は低く液面検知パイプ５２が液面
によつて塞がれることはないため、分岐管５２ａ
の負圧発生により吸引される空気は液面検知パイ
プ５２の開口から補給され上室２０ｂが負圧にな
ることはない。 On the other hand, when the handle 32 is rotated, the pressing lever 31 presses and displaces the valve element 64 upward via the shaft portion 64b of the valve element 64 of the flow dividing valve 61, opening the flow dividing valve 61, as shown in FIG. Handle shaft 30
Since the pressing lever 31 is held in the downward rotational position shown in FIGS. 9 to 11 by the biasing force of the torsion spring 35, the diversion valve 61 is maintained in the open state. Therefore, a part of the oil in the chamber 22c begins to steadily flow to the outlet 22b via the branch channel 62, and
7, negative pressure is generated in the branch pipe 52a.
However, at the beginning of the liquid supply, the liquid level in the hatch 13 of the tank truck is low and the liquid level detection pipe 52 is not blocked by the liquid level, so the branch pipe 52a
The air sucked in due to the generation of negative pressure is replenished from the opening of the liquid level detection pipe 52, so that the upper chamber 20b does not become under negative pressure.

しかるに、給液の進行と共に液面が上昇して上
限位置に至り（非常時）、液面検知パイプ５２の
開口が塞がれると、該パイプ５２側からの空気補
給が断たれ上室２０ｂ内の空気が吸引され低圧と
なる。ここで下室２０ｃは常時大気圧であるか
ら、ダイヤフラム膜４６がバネ５１に抗して上動
する。即ち第１のロツク解除機構部５０が作動し
てニードル４７が上動され、ロツク機構部４５の
ロツクが解除される。かくして弁体軸２７及び主
弁体２４はバネ２６により下動され弁体部２４ａ
が弁座２３ａに着座復帰し主弁２５は閉弁され給
液が停止される。このときピストン部２４ｂがシ
リンダ部２３ｃ内で下動するため、ダンパ室２３
ｄ内の油液は絞り連通孔２３ｆから下流側へ押し
出されるが、絞り連通孔２３ｆの絞り効果により
徐々にしか押し出されず主弁体２４にダンパ効果
を付与する。従つて、主弁体２４は上記ダンパ効
果により緩やかに下動されて上記着座を行うた
め、閉弁時にウオータハンマーを生ずることなく
ウオータハンマーに伴なう定量弁８、流量計７等
への悪影響を生ずることはない。又主弁体２４の
下動速度は絞り連通孔２３ｆの絞り部内径を適宜
選定することにより容易に調整することができ
る。またこの絞り連通孔２３ｆを固定絞りでなく
可変絞りとすれば、その調整は一層容易になる。 However, as the liquid supply progresses, the liquid level rises and reaches the upper limit position (in an emergency), and when the opening of the liquid level detection pipe 52 is blocked, air supply from the pipe 52 side is cut off and the inside of the upper chamber 20b is air is sucked in and the pressure becomes low. Here, since the lower chamber 20c is always at atmospheric pressure, the diaphragm membrane 46 moves upward against the spring 51. That is, the first lock release mechanism 50 is operated to move the needle 47 upward, and the lock mechanism 45 is unlocked. In this way, the valve body shaft 27 and the main valve body 24 are moved downward by the spring 26, and the valve body portion 24a is moved downwardly by the spring 26.
is returned to the valve seat 23a, the main valve 25 is closed, and liquid supply is stopped. At this time, since the piston portion 24b moves downward within the cylinder portion 23c, the damper chamber 23
The oil in d is pushed out downstream from the throttle communication hole 23f, but is pushed out only gradually due to the throttle effect of the throttle communication hole 23f, giving the main valve body 24 a damper effect. Therefore, the main valve body 24 is gently moved down by the damper effect to take the seat, so water hammer does not occur when the valve is closed, and the adverse effects on the metering valve 8, flow meter 7, etc. caused by water hammer are avoided. will not occur. Further, the downward movement speed of the main valve body 24 can be easily adjusted by appropriately selecting the inner diameter of the throttle portion of the throttle communication hole 23f. Further, if the diaphragm communication hole 23f is made of a variable diaphragm instead of a fixed diaphragm, the adjustment becomes easier.

弁体軸２７の下動時に、リンク４１及び押圧片
４２も連動的に反時計方向へ回動して第６図の位
置に復帰し、上記クラツチかみ合いによりハンド
ル軸３０、ハンドル３２もリンク４１と一体的に
第６図の位置まで回動復帰し、分流弁６１も弁体
６４が下動して閉弁状態となる。尚弁体軸２７の
下動中にリセツト軸２９もニードル４７の下端か
ら離れて下動する。 When the valve body shaft 27 moves downward, the link 41 and the pressing piece 42 also rotate counterclockwise in conjunction with each other and return to the position shown in FIG. The valve body 64 integrally rotates back to the position shown in FIG. 6, and the valve body 64 of the flow dividing valve 61 also moves downward to be in a closed state. Incidentally, while the valve body shaft 27 is moving downward, the reset shaft 29 also moves downward away from the lower end of the needle 47.

尚上記非常時での閉弁の後は、ローデイングア
ーム９中に油液は満たされており、主弁体２４の
上面には液圧が作用しているため、この後ハンド
ル３２を操作しても手動力では回動させることは
できず、ハンドル誤操作により油液が漏洩するお
それはないと共に、ハンドル操作により油液が盗
難されるおそれもない。又ハンドル操作の不可能
を知ることにより、逆に上記非常時用の閉弁がな
された、即ち定量弁等が故障したことを知ること
ができ、直ちに対応策を取れるという利点もあ
る。尚、上述の如く非常時での閉弁の後にハンド
ル３２の操作によつては主弁２５が開弁しない理
由は、主弁体２４の上流側に液圧が作用している
からであり、従来の如くまずパイロツト弁のみを
開弁させるのであれば上記非常時の閉弁の後でも
容易に主弁の開弁もなしうるのである。 Note that after the valve is closed in the above-mentioned emergency, the loading arm 9 is filled with oil and hydraulic pressure is acting on the upper surface of the main valve body 24, so the handle 32 cannot be operated after this. However, it cannot be rotated by manual force, so there is no risk of oil leakage due to erroneous operation of the handle, and there is no risk of the oil being stolen due to handle operation. In addition, by knowing that the handle cannot be operated, it is possible to know that the emergency valve has been closed, that is, that the metering valve or the like has failed, and there is the advantage that countermeasures can be taken immediately. As mentioned above, the reason why the main valve 25 does not open by operating the handle 32 after closing in an emergency is that hydraulic pressure is acting on the upstream side of the main valve body 24. If only the pilot valve is opened first as in the conventional case, the main valve can also be easily opened even after the valve is closed in an emergency.

上記構成になる給液停止装置２１は、液面が所
定位置まで変位したときに液面検知パイプ５２の
開口が塞がれてダイヤフラム膜４６の上室２０
ｂ、下室２０ｃ間で生ずる差圧によつて第１のロ
ツク解除機構部５０が作動する構成であるから、
微圧の液面検知信号によつても確実に動作する。 The liquid supply stop device 21 configured as described above is configured so that when the liquid level is displaced to a predetermined position, the opening of the liquid level detection pipe 52 is closed and the upper chamber 20 of the diaphragm membrane 46 is closed.
b. Since the first lock release mechanism section 50 is configured to operate due to the differential pressure generated between the lower chamber 20c,
It operates reliably even with a low pressure liquid level detection signal.

次に、上記定量弁の故障等の原因により非常時
用閉弁がなされた後、給液所側で原因が究明され
修理が完了した際には、迅速にハンドル３２の操
作により給液が可能の状態に復帰してやらなけれ
ばいけないが、これには分流弁６１を開弁させて
ローデイングアーム９中の油液を抜いてやればよ
い。（このときハンドル３２の操作は上記理由に
より不可能である。） ここで、ローリ車の運転手が勝手にドライバ等
により弁体６４を押上げることができるとする
と、分流弁６１が傷付いたり上記原因の究明がな
される以前に再び給液が開始される等のメインテ
ナンス上の不都合を生ずるおそれがある。従つて
本願では、上記分流弁６１にガード部６３ｃを設
けて上記ドライバ等の汎用工具ではガード部６３
ｃが邪魔になつて開弁操作不可能としており、給
液作業監督者が確実に上記原因の究明、修理を行
つた後第５図Ａ，Ｂに示す専用工具６６により開
弁させるのであり、以下その説明をする。 Next, after the emergency valve is closed due to a failure of the metering valve, etc., when the cause has been investigated and repairs have been completed at the liquid supply station, liquid can be supplied quickly by operating the handle 32. It is necessary to return to the above state, but this can be done by opening the flow dividing valve 61 and draining the oil in the loading arm 9. (At this time, it is impossible to operate the handle 32 for the reason mentioned above.) If the driver of the lorry vehicle were to be able to push up the valve body 64 without permission using a screwdriver, etc., the diverter valve 61 could be damaged. There is a risk that maintenance problems may occur, such as liquid supply being restarted before the cause is investigated. Therefore, in the present application, the diverter valve 61 is provided with a guard portion 63c, and the guard portion 63c is provided in the general-purpose tool such as the driver.
c is in the way, making it impossible to open the valve, and the liquid supply work supervisor must properly investigate the cause and repair it before opening the valve using a special tool 66 shown in FIGS. 5A and 5B. The explanation will be given below.

上記原因究明、修理が完了した後、給液作業監
督者は、第４図Ａ中、二点鎖線で示す如く専用工
具６６の先端をガード部６３ｃの長孔６３ｆを挿
通させて孔６３ｄ内に差込み、一対の係合ピン部
６６ｃを夫々係合溝６３ｇに係合させて当てが
い、先端押圧部６６ｄを弁体６４の軸部６４ｂ下
方に対向させる。そして工具６６の把持部６６ａ
を握つて上記係合部を支点として下方へ回動させ
ると、てこの原理により押圧部６６ｄが上動して
大なる力で軸部６４ｂに当接して弁体６４をバネ
６５に抗して押上げる。従つて分流弁６１が開弁
し、ローデイングアーム９中の油液が分流路６２
を通つて流出口２２ｂ側へ流出し、ハンドル３２
の操作により開弁可能の最初の状態に復帰する。 After the above cause investigation and repair are completed, the liquid supply work supervisor inserts the tip of the special tool 66 through the long hole 63f of the guard portion 63c and into the hole 63d, as shown by the two-dot chain line in FIG. 4A. The pair of engagement pin portions 66c are respectively engaged with the engagement grooves 63g and applied, and the tip pressing portion 66d is opposed to the lower side of the shaft portion 64b of the valve body 64. And the grip part 66a of the tool 66
When the user grasps the lever and rotates it downward using the engaging portion as a fulcrum, the pressing portion 66d moves upward due to the lever principle and abuts against the shaft portion 64b with a large force, pushing the valve body 64 against the spring 65. Push up. Therefore, the diversion valve 61 opens, and the oil in the loading arm 9 flows into the diversion path 62.
through the handle 32 to the outlet 22b side.
The operation returns to the initial state where the valve can be opened.

ここで、第１図の給液出荷装置１は、ローデイ
ングアーム９の上流側に定量弁８が設けてある
が、実際上はハツチ１３内に満タンになるまで
（油液が上限位置になるまで）給液するケース
（非常時）よりも予め設定した定量の給液がなさ
れたときに定量弁８を自動的に閉弁させて出荷を
停止させるケース（通常時）の方が多い。 Here, the liquid supply and shipping device 1 shown in FIG. 1 is provided with a metering valve 8 on the upstream side of the loading arm 9, but in reality, it is used until the hatch 13 is full (the oil reaches the upper limit position). There are more cases (in normal times) in which the metering valve 8 is automatically closed and shipping is stopped when a preset amount of liquid is supplied than in cases in which the liquid is supplied (in an emergency).

定量弁８によつて給液が自動停止すると、第９
図中、第１のロツク解除機構部４５は何ら作動し
ないから主弁２５は開弁したままである。従つ
て、第１図中ローデイングアーム９中に残留して
いる油液は重力によりそのまま給液停止装置２１
の弁部を流れてドロツプパイプ１１に流出する。
同時にダンパ室２３ｄ内の油液もドロツプパイプ
１１に流出する。 When the liquid supply is automatically stopped by the metering valve 8, the 9th
In the figure, since the first lock release mechanism 45 does not operate at all, the main valve 25 remains open. Therefore, the oil remaining in the loading arm 9 in FIG.
The liquid flows through the valve portion of the valve and flows out into the drop pipe 11.
At the same time, the oil in the damper chamber 23d also flows out into the drop pipe 11.

作業者は上記残留油液が完全に流出するまで若
干の時間待ちをした後、第１１図中、ハンドル３
２を点線矢印で示す反時計方向へ回動復帰させ
る。すると、同図の構成より明らかな如く、第１
のクラツチ部３４が同方向へ回動してもクラツチ
かみ合いがなされず、リンク４１は弁体軸２７と
共に第９図〜第１１図の回動位置にロツクされた
ままで、ハンドル軸３０、ハンドル３２のみが同
方向へ回動し第６図と同一位置に至る。従つて、
第１２図の如く、押圧ピン３３が同方向回動途中
に押圧片４２右端を押圧して時計方向へ回動させ
るため（このときのクラツチ部分の構成を第１３
図に示す）、押圧片４２はリセツト軸２９を上方
へ押圧変位せしめニードル４７を上動させる。 The operator waits for a while until the residual oil is completely drained, and then turns the handle 3 in Figure 11.
2 in the counterclockwise direction indicated by the dotted arrow. Then, as is clear from the configuration in the same figure, the first
Even if the clutch portions 34 of the two rotate in the same direction, the clutches are not engaged, and the link 41 remains locked in the rotational position shown in FIGS. only rotates in the same direction and reaches the same position as in FIG. Therefore,
As shown in FIG. 12, the pressing pin 33 presses the right end of the pressing piece 42 while rotating in the same direction to rotate it clockwise (the configuration of the clutch portion at this time is shown in Fig. 13).
(shown in the figure), the pressing piece 42 presses and displaces the reset shaft 29 upward, causing the needle 47 to move upward.

即ち、第２のロツク解除機構部５３が作動し、
最終的にニードル４７が所定寸法上動してボール
４８の押圧を解除させる。 That is, the second lock release mechanism section 53 operates,
Finally, the needle 47 moves up a predetermined distance to release the pressure on the ball 48.

従つて、第９図中、弁体軸２７及び弁体２４は
ロツク機構部４５によるロツクを解除されたこと
になり、同図の位置よりバネ２６により下動開始
し、上記の場合と同様に、主弁２４が閉弁する。 Therefore, in FIG. 9, the valve body shaft 27 and the valve body 24 are unlocked by the locking mechanism 45, and begin to move downward from the position shown in the figure by the spring 26, as in the above case. , the main valve 24 closes.

同時にリンク４１も反時計方向へ回動復帰して
第６図の位置に戻ると共に、押圧片４２も同図の
位置に戻る。 At the same time, the link 41 also rotates back counterclockwise and returns to the position shown in FIG. 6, and the pressing piece 42 also returns to the position shown in the same figure.

上記操作によれば、定量弁８が閉弁した定量給
液時に、ローデイングアーム９中に残留した油液
を完全に流出させた後に、マニユアル的に給液停
止装置２１を閉弁せしめている。従つて、第１図
中定量弁８及び給液停止装置２１間の配管部にお
いては、立上り配管部４ａに若干の油液が残留し
ているのみでローデイングアーム９には何ら油液
が残留していないため、この状態で外気温度が上
昇して油液が膨脹しても油液量が少ないためロー
デイングアーム９等を傷めることはなく、又ロー
デイングアーム９は油液が充満しておらず軽量の
ため、次のハツチへ移し変える回動操作が容易で
作業が楽になる。 According to the above operation, the liquid supply stop device 21 is manually closed after the oil remaining in the loading arm 9 has completely flowed out during metered liquid supply when the metering valve 8 is closed. . Therefore, in the piping section between the metering valve 8 and the liquid supply stop device 21 in FIG. Therefore, even if the outside air temperature rises and the oil expands in this state, the amount of oil is small and the loading arm 9 etc. will not be damaged, and the loading arm 9 will not be filled with oil. Because it is lightweight and has no holes, it is easy to rotate the hatch to move it to the next hatch, making work easier.

上述の如く、本考案になる給液停止装置によれ
ば、分流弁の弁棒の突出部の周囲にガード体を設
けると共に該ガード体に弁棒押上用専用工具のみ
挿入しうる孔及び工具回動操作用の支点部を設け
ているため、ガード体により給液作業監督者以外
の人が弁棒を操作することは不可能であり、給液
作業監督者のみが適正な時期に上記専用工具によ
り弁棒を押上げ分流弁を正しく開弁させることが
でき、弁棒が傷つくことを防止し且つ給液装置の
メインテナンスの信頼性を向上しうる等の特長を
有する。 As described above, according to the liquid supply stop device of the present invention, a guard body is provided around the protrusion of the valve stem of the diverter valve, and the guard body is provided with a hole and a tool hole into which only a special tool for pushing up the valve stem can be inserted. Since the valve stem is equipped with a fulcrum for dynamic operation, the guard body makes it impossible for anyone other than the liquid supply work supervisor to operate the valve stem, and only the liquid supply work supervisor can use the special tools mentioned above at an appropriate time. This has the advantage of being able to push up the valve stem and properly open the diversion valve, preventing damage to the valve stem, and improving the reliability of maintenance of the liquid supply device.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は一般的な給液出荷装置の概略構成図、
第２図は本考案になる給液停止装置の一実施例の
正面図、第３図Ａ，Ｂは夫々上記装置の第２図中
Ａ−Ａ線及びＢ−Ｂ線に沿う断面矢視
図、第４図Ａ〜Ｄは夫々上記装置の分流弁部分の
縦断正面図、側面図、同図Ａ中Ｃ−Ｃ線に沿
う断面矢視図、同図Ｂ中Ｄ−Ｄ線に沿う断面
矢視図、第５図Ａ，Ｂは夫々上記分流弁開弁用専
用工具の正面図及び側面図、第６図及び第９図は
夫々上記装置の動作を示す概略構成図、第７図、
第１０図、第１２図は夫々上記装置の第２のロツ
ク解除機構部の動作を示す一部切截側面部分図、
第８図、第１１図、第１３図は夫々上記装置のハ
ンドル軸及びリンクのクラツチ部分の動作を示す
一部切截側面部分図である。 １……給液出荷装置、８……定量弁、９……ロ
ーデイングアーム、１０，２１……給液停止装
置、１１……ドロツプパイプ、１３……ハツチ、
１４，５２……液面検知パイプ、２２……弁本
体、２３……弁座部材、２３ｄ……ダンパ室、２
４……主弁体、２５……主弁、２７……弁体軸、
２９……リセツト軸、３０……ハンドル軸、３１
……押圧レバー、３２……ハンドル、４１……リ
ンク、４５……ロツク機構部、５０……第１のロ
ツク解除機構部、５３……第２のロツク解除機構
部、６１……分流弁、６２……分流路、６３ｃ…
…ガード部、６４……弁体、６４ｂ……軸部、６
６……専用工具、６７……ベンチユリー。 Figure 1 is a schematic diagram of a general liquid supply and shipping device.
FIG. 2 is a front view of one embodiment of the liquid supply stop device according to the present invention, and FIGS. 3A and 3B are cross-sectional views of the device taken along lines A-A and B-B in FIG. 2, respectively. , FIGS. 4A to 4D are respectively a longitudinal sectional front view and a side view of the diverter valve portion of the above device, a sectional view taken along line C-C in FIG. 4A, and a sectional view taken along line DD in FIG. 5A and 5B are respectively a front view and a side view of the dedicated tool for opening the diverter valve, and FIGS. 6 and 9 are schematic configuration diagrams showing the operation of the device, and FIG.
FIGS. 10 and 12 are partially cutaway side views showing the operation of the second lock release mechanism of the device, respectively;
8, 11 and 13 are partially cut-away side views showing the operation of the handle shaft and the clutch portion of the link, respectively, of the above device. DESCRIPTION OF SYMBOLS 1...Liquid supply shipping device, 8...Dosing valve, 9...Loading arm, 10, 21...Liquid supply stop device, 11...Drop pipe, 13...Hatch,
14, 52...Liquid level detection pipe, 22...Valve body, 23...Valve seat member, 23d...Damper chamber, 2
4... Main valve body, 25... Main valve, 27... Valve body shaft,
29...Reset axis, 30...Handle axis, 31
... Press lever, 32 ... Handle, 41 ... Link, 45 ... Lock mechanism section, 50 ... First lock release mechanism section, 53 ... Second lock release mechanism section, 61 ... Diversion valve, 62...Diversion channel, 63c...
... Guard part, 64 ... Valve body, 64b ... Shaft part, 6
6...special tool, 67...bench yuri.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 給液管途中に設けられ、弁座を有する弁本体
と、該弁本体に上下動自在に設けられ該弁座に離
着座して液流路の開閉用主弁を構成する主弁体
と、ハンドルを有して前記弁本体に回動自在に設
けられ、該ハンドルの操作により回動されて該主
弁体を連動的に開弁せしめるハンドル軸と、前主
弁体を上動開弁位置にロツクするロツク機構部
と、前記弁本体の該主弁上流側から分岐した分流
路と、該分流路途中に設けられ、該ハンドル軸の
回動に連動して弁棒が上下動されて開閉弁される
分流弁と、該分流路途中に液面検知パイプと連通
して設けられ該液面検知パイプが所定位置に達し
た液面により閉塞されたとき該液面検知パイプ内
を負圧にせしめるベンチユリーと、前記負圧の信
号を供給されて作動し、前記ロツクを解除し前記
主弁を閉弁せしめるロツク解除機構部とよりな
り、前記分流弁の弁棒の突出部周囲にこれを囲む
ガード体を設け、該ガード体に弁棒押上専用工具
が挿入される孔部と該孔部の近傍に該工具の回動
支点となる支点部とを設けたことを特徴とする給
液停止装置。 a valve body provided in the middle of a liquid supply pipe and having a valve seat; a main valve body provided on the valve body so as to be movable up and down and seated on and off the valve seat to constitute a main valve for opening and closing a liquid flow path; A handle shaft is rotatably provided on the valve body and has a handle, and is rotated by operation of the handle to open the main valve body in conjunction, and a handle shaft that moves the front main valve body to an upward valve opening position. A lock mechanism section that locks the valve body, a branch passage branching from the upstream side of the main valve of the valve body, and a branch passage provided in the middle of the branch passage, and the valve stem is moved up and down in conjunction with the rotation of the handle shaft to open and close the valve. A diversion valve is provided in the middle of the diversion path in communication with a liquid level detection pipe, and when the liquid level detection pipe is blocked by the liquid level reaching a predetermined position, negative pressure is created in the liquid level detection pipe. and a lock release mechanism section that is operated by being supplied with the negative pressure signal to release the lock and close the main valve, and surrounds the protrusion of the valve stem of the diverter valve. A liquid supply stop device characterized in that a guard body is provided, a hole portion into which a tool dedicated to pushing up the valve stem is inserted, and a fulcrum portion serving as a pivot point for the tool near the hole portion. .