JP2579832B2 - Gate valve - Google Patents

Gate valve

Info

Publication number
JP2579832B2
JP2579832B2 JP2268202A JP26820290A JP2579832B2 JP 2579832 B2 JP2579832 B2 JP 2579832B2 JP 2268202 A JP2268202 A JP 2268202A JP 26820290 A JP26820290 A JP 26820290A JP 2579832 B2 JP2579832 B2 JP 2579832B2
Authority
JP
Japan
Prior art keywords
water
gate valve
valve
flow path
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2268202A
Other languages
Japanese (ja)
Other versions
JPH04145272A (en
Inventor
武夫 西脇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEIBU SHOJI JUGENGAISHA
Original Assignee
SEIBU SHOJI JUGENGAISHA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SEIBU SHOJI JUGENGAISHA filed Critical SEIBU SHOJI JUGENGAISHA
Priority to JP2268202A priority Critical patent/JP2579832B2/en
Publication of JPH04145272A publication Critical patent/JPH04145272A/en
Application granted granted Critical
Publication of JP2579832B2 publication Critical patent/JP2579832B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、弁箱の流路に対してほぼ直交方向に昇降
してその流路を開閉する仕切弁体を備えた仕切弁に関す
る。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate valve provided with a gate valve that moves up and down in a direction substantially perpendicular to a flow path of a valve box to open and close the flow path.

(従来技術) この種の仕切弁の多くは、仕切弁体が下降して流路を
完全に閉じることができるように、仕切弁体の直下の弁
箱内底部にその仕切弁体の下部との当接を避けるための
凹溝が設けられている。ところで、この凹溝には、流路
内を流れる流体によつて運び込まれた土、砂、ゴミなど
が堆積し易く、しかも、これらの堆積物は、開閉する仕
切弁体によつてあたかも踏み固められるがごとく下方に
押し付けられ、やがては前記凹溝を固く埋め尽くしてし
まう。このため、仕切弁体の下降に障害が生じ流路を完
全に閉じることができなくなり、漏水の原因となつた。
(Prior art) Many of these types of gate valves are provided with a lower part of the gate valve at the bottom of the valve box immediately below the gate valve so that the gate valve can be lowered to completely close the flow path. Are provided to avoid abutment. By the way, soil, sand, dust and the like carried by the fluid flowing in the flow passage are liable to accumulate in this concave groove, and these sediments are compacted as if by a gate valve that opens and closes. As a result, the groove is pressed downward, and eventually the groove is firmly filled. As a result, the lowering of the gate valve body was obstructed, and the flow path could not be completely closed, resulting in water leakage.

そこで、従来の仕切弁は、凹溝の両側壁部にプラグと
称されるねじ蓋を設け、このねじ蓋を適宜明けて前記凹
溝内に堆積した堆積物を弁箱外部と掻き出すようにして
いた。
Therefore, in the conventional gate valve, a screw cap called a plug is provided on both side walls of the groove, and the screw cap is appropriately opened to scrape off the deposits accumulated in the groove with the outside of the valve box. Was.

(発明が解決しようとする課題) しかしながら、このような掻き出し作業は面倒である
ため怠る傾向にあり、やがて既述の通り堆積物が凹溝内
に固くこびりついて掻き出し不能の状態となり、ついに
は仕切弁体の下降に障害が生じるというように、漏水対
策としては不充分なものであつた。しかも、堆積物を掻
き出すためには、流路内を流れる流体をせき止める必要
があるが、せき止めることができない状況にあつては、
その堆積物を弁箱外部に掻き出す作業を行うこと自体が
不可能であつた。
(Problems to be Solved by the Invention) However, such a scraping operation is troublesome and tends to be neglected. Then, as described above, the sediment is firmly stuck in the concave groove and cannot be scraped. Inadequate measures were taken to prevent water leakage, such as a failure to lower the valve. In addition, in order to scrape out the sediment, it is necessary to block the fluid flowing in the flow path.
It was impossible to scrape the deposit out of the valve box.

この発明は、従来技術がもつこのような欠陥に鑑みて
創作されたものであり、その目的とするところは、弁箱
の流路内に流れる流体をせき止めることなく、凹溝内に
溜まる土、砂、ゴミなどを、簡単に弁箱外部へと排出で
き、よつてその堆積を防止して漏水の原因を取り除くこ
とができるようにした、仕切弁を提供しようとするもの
である。
The present invention has been made in view of the above-described deficiencies of the related art, and has as its object to prevent soil flowing in the groove of the valve box without damming the fluid flowing in the flow path of the valve box. It is an object of the present invention to provide a gate valve capable of easily discharging sand, dust and the like to the outside of a valve box, thereby preventing the accumulation of the sand and dust and removing the cause of water leakage.

(課題を解決するための手段) この発明に係る仕切弁は、前記目的を達成するために
次の構成からなる。即ち、弁箱の流路に対してほぼ直交
方向に昇降してその流路を開閉する仕切弁体と、この仕
切弁体が下降して前記流路を完全に閉じることができる
ように、仕切弁体の直下の弁箱内底部に、その仕切弁体
の下部との当接を避けるための凹溝とを備えるものであ
る。そして、前記凹溝に開口し、その凹溝を挟んで直接
対面するように互いに向かい合う送水口および排水口を
設け、かつ、前記弁箱に、その送水口に通じる送水管お
よびその排水口に通じる排水管を取り付けて、これらの
送水管および排水管を介して、洗いだし水を、前記凹溝
内に送り込みかつ通過させて、前記凹溝内に溜まつた
土、砂、ゴミなどを前記洗いだし水とともに弁箱外へと
排出できるようにしたものである。
(Means for Solving the Problems) A gate valve according to the present invention has the following configuration to achieve the above object. That is, a partition valve body that moves up and down in a direction substantially orthogonal to the flow path of the valve box to open and close the flow path, and a partition valve that lowers the flow path to completely close the flow path. At the bottom inside the valve box immediately below the valve body, there is provided a concave groove for avoiding contact with the lower part of the gate valve body. An opening is formed in the groove, and a water inlet and a drain are provided so as to face each other so as to directly face each other with the groove interposed therebetween, and the valve box communicates with a water pipe and a drain which communicates with the water inlet. A drain pipe is attached, and washing water is sent into and passed through the groove through the water pipe and the drain pipe to wash soil, sand, dust, and the like accumulated in the groove. However, it can be discharged outside the valve box together with the water.

また、前記送水管および排水管には、それぞれ、前記
仕切弁体が流路を完全に閉じる前に開弁するように制御
されて前記洗いだし水を送水および排水し、かつ、前記
仕切弁体が流路を完全に閉じた後に閉弁するように制御
されて前記洗いだし水の送水および排水を停止する送水
弁および排水弁が設けられいるのが好ましい。
Further, the water supply pipe and the drain pipe are controlled so that the gate valve body opens before the flow path is completely closed, respectively, to feed and drain the wash water, and the gate valve body. It is preferable to provide a water supply valve and a water discharge valve which are controlled so as to close after completely closing the flow path and stop the water supply and drainage of the washing water.

また、前記洗いだし水は、圧縮空気とともに送水され
るジエツト水であるのが望ましい。
Preferably, the rinsing water is jet water supplied with compressed air.

(作用) 洗いだし水が、送水管から、凹溝に開口する送水口を
通って、凹溝内へと送り込まれると、その凹溝内に溜ま
つた土、砂、ゴミなどは、洗いだし水により洗い流され
て、凹溝を挟んで直接対面するように送水口と向かい合
つて凹溝に開口する排水口へ直接押しやられ、洗いだし
水とともに、その排水口に通じる排水管を介して弁箱外
部へと排出される。
(Action) When the washing water is sent from the water pipe into the groove through the water opening opening in the groove, the soil, sand, dust, etc. accumulated in the groove are washed out. The water is washed away by water, and is pushed directly to the drain opening in the groove facing the water supply opening so as to face directly across the groove, and together with the wash water, a valve is provided through the drain pipe leading to the drain. It is discharged outside the box.

(実施例) 以下、この発明の一実施例を第1図から第3図に基づ
いて説明する。
Embodiment An embodiment of the present invention will be described below with reference to FIGS.

この仕切弁の弁本体1は、弁箱2と、この弁箱2のほ
ぼ中央上部に形成される弁収容室3を覆う弁蓋4とを備
える。弁箱2は断面円形状であつて、水平方向に流路5
が形成されており、この流路5に対してほぼ直交方向に
昇降するように、弁軸6に連結された仕切弁体7が設け
られている。仕切弁体7は、例えば第2図および第3図
で明示するように中空状であつて、一方の側面には所要
の勾配が施された周縁を形成する環状砲金部8が、ま
た、他方の側面にはそのような勾配が施されない周縁を
形成する環状砲金部9がそれぞれ設けられている。そし
て、これら環状砲金部8,9は、弁箱2側に取り付けられ
た砲金製の環状弁座10,11に対してくさび状に密接する
ようになつている。よつて、図示しない電気駆動装置
(もしくは手動回転ハンドル)の操作により弁軸6が回
転すると、仕切弁体7は、弁収容室3の両側に形成され
た案内溝12に沿つて昇降し、流路5を開閉する。
The valve main body 1 of the gate valve includes a valve box 2 and a valve cover 4 that covers a valve storage chamber 3 formed substantially at the upper center of the valve box 2. The valve box 2 has a circular cross section and has a flow passage 5 extending in the horizontal direction.
A gate valve body 7 connected to a valve shaft 6 is provided so as to ascend and descend in a direction substantially orthogonal to the flow path 5. The gate valve body 7 is hollow as shown in FIGS. 2 and 3, for example, and has an annular metal shell 8 forming a peripheral edge having a required slope on one side, and the other side. Each of the side surfaces is provided with an annular metal shell 9 forming a peripheral edge where such a gradient is not applied. The annular metal parts 8, 9 are in close contact with the annular metal valve seats 10, 11 attached to the valve box 2 side in a wedge shape. Thus, when the valve shaft 6 is rotated by operating an electric drive device (or a manual rotary handle) (not shown), the gate valve body 7 moves up and down along the guide grooves 12 formed on both sides of the valve accommodating chamber 3 to flow. Road 5 is opened and closed.

そして、仕切弁体7が下降して流路5を完全に閉じる
ことができるように、仕切弁体7の直下の弁箱内底部に
その仕切弁体7の下部との当接を避けるための凹溝13が
設けられている。この凹溝13の側壁部14,15には、凹溝1
3に通じる小径の貫通孔16および大径の貫通孔17がそれ
ぞれ対応位置するように明けられている。つまり、貫通
孔16の凹溝13に開口する送水口16aと、貫通孔17の凹溝1
3に開口する排水口17aとは、その凹溝13を挟んで直接対
面するように互いに向かい合つている。そして、小径の
貫通孔16には、例えば電動弁などからなる送水弁18およ
び手動で開閉できる予備のスリース弁19を備えた、送水
管20が接続される。また、大径の貫通孔17には、同じく
電動弁からなる排水弁21および手動で開閉できる予備の
スリース弁22を備えた、排水管23が取り付けられる。そ
して、排水管20には図示しない給水源から洗いだし水、
望ましくは圧縮空気とともに送水されるジエツト水が供
給され、かつ、その洗いだし水は、流路5内を流れる流
体の流れの方向に対して直交する方向に凹溝13内へと送
り込まれて、凹溝13内に溜まつた土、砂、ゴミなどを洗
い流し、排水管23を通じて弁箱2の外部へと排水され
る。もつとも、これら送水管20および排水管23を開閉し
て洗いだし水を排水する送水弁18および排水弁21は、好
ましくは仕切弁体7が流路5を完全に閉じる前に開弁
し、流路を完全に閉じた後に閉弁するように制御され
る。また、洗いだし水の送水および土、砂、ゴミなどの
排出が容易となるように、送水管20および排水管21の径
を連続的に徐々に大きくなるように形成し、かつ、両管
20,21の上部側が水平で底部側が下り勾配となるような
構造としても良い。
In order to prevent the gate valve 7 from descending and completely close the flow path 5, the bottom of the gate valve immediately below the gate valve 7 is prevented from contacting the bottom of the gate valve 7. A concave groove 13 is provided. The side walls 14 and 15 of the groove 13 have grooves 1
The small-diameter through-hole 16 and the large-diameter through-hole 17 leading to 3 are opened so as to correspond to each other. That is, the water supply port 16a that opens into the concave groove 13 of the through hole 16 and the concave groove 1 of the through hole 17
The drain opening 17a opening to 3 is opposed to each other so as to directly face each other with the concave groove 13 interposed therebetween. The small-diameter through hole 16 is connected to a water supply pipe 20 having a water supply valve 18 composed of, for example, an electric valve and a spare three-way valve 19 that can be manually opened and closed. Further, a drain pipe 23 having a drain valve 21, which is also an electric valve, and a spare three-way valve 22 which can be manually opened and closed, is attached to the large-diameter through hole 17. Then, the drain pipe 20 is washed with water from a water supply source (not shown),
Desirably, jet water fed with compressed air is supplied, and the washing water is fed into the groove 13 in a direction perpendicular to the direction of the flow of the fluid flowing in the flow path 5, The soil, sand, dust and the like accumulated in the concave groove 13 are washed away and drained to the outside of the valve box 2 through the drain pipe 23. In any case, the water supply valve 18 and the drainage valve 21 for opening and closing the water supply pipe 20 and the drainage pipe 23 to drain the wash water are preferably opened before the gate valve element 7 completely closes the flow path 5, The valve is controlled so as to close after completely closing the passage. Also, the diameter of the water supply pipe 20 and the drain pipe 21 are formed so as to be gradually increased continuously so that the water for washing water and the discharge of soil, sand, dust and the like are easily formed.
It is good also as a structure where the upper part of 20,21 is horizontal and the bottom part has a downward slope.

仕切弁体7は、流路5を完全に閉じたり開いたりする
ばかりでなく、流量を調整するために半開きなど全開し
ない状態で使用される場合がある。このような全開しな
い使用状態にあつては、流体物が仕切弁体7に激しくぶ
つかつてその弁体7をがたつかせ、永きにわたつて使用
する間に弁体7あるいは弁箱2とくにその弁座10,11な
どに傷が生じ、ついには仕切弁体7を完全に閉じてもそ
れらの傷から漏水することとなる。このような漏水の発
生を未然に防止するために、弁体ぶれ止め機構Pが設け
られる。
In some cases, the gate valve body 7 is used not only to completely close or open the flow path 5 but also to be not fully opened, such as half open, to adjust the flow rate. In such a use state in which the valve is not fully opened, the fluid hits the partition valve 7 violently, causing the valve body 7 to rattle, and the valve body 7 or the valve box 2, especially the valve, during use for a long time. Scratches occur in the seats 10, 11 and the like. Eventually, even if the gate valve body 7 is completely closed, water leaks from those scratches. In order to prevent such water leakage from occurring, a valve body shake prevention mechanism P is provided.

以下、この弁体ぶれ止め機構Pについて詳述すると、
同機構Pは流路5の入口側に設けられ、その駆動装置で
ある油圧シリンダ24は、弁箱2の外壁中央上部から水平
方向に延設された基台25の一側上に、スタンド26を介し
て倒立状態で固定されている。そして、この油圧シリン
ダ24のロツドヘツド27は、駆動軸28の一端に取り付けら
れたレバー29に連結されている。駆動軸28は、基台25の
一側上に固設された軸受け30によつてその一端部が軸支
されており、また、その他端部は、基台25の他側上に固
設されたハウジング31内へと延びて、その側蓋32の内側
に設けられた軸受け部33によつて回動可能に軸支されて
いる。そして、この駆動軸28の他端には、レバー34が取
り付けられている。レバー34は、弁箱2の中央上部に明
けられた通し孔35を介して弁箱2内へと延びており、そ
の下端には押さえ部材36が連結されている。
Hereinafter, the valve body shake preventing mechanism P will be described in detail.
The mechanism P is provided on the inlet side of the flow path 5, and a hydraulic cylinder 24 as a driving device thereof is provided on one side of a base 25 extending horizontally from the upper center of the outer wall of the valve box 2. It is fixed in an inverted state via. The rod head 27 of the hydraulic cylinder 24 is connected to a lever 29 attached to one end of a drive shaft 28. One end of the drive shaft 28 is supported by a bearing 30 fixed on one side of the base 25, and the other end is fixed on the other side of the base 25. The housing 31 extends into the housing 31 and is rotatably supported by a bearing 33 provided inside the side cover 32. A lever 34 is attached to the other end of the drive shaft 28. The lever 34 extends into the valve box 2 through a through hole 35 formed in the upper center of the valve box 2, and a holding member 36 is connected to a lower end thereof.

押さえ部材36は、流路5の方向と平行に延びその先端
部は仕切弁体7の側面部に臨むことができるようになつ
ており、また、その両側部長手方向には案内溝37が形成
されている。そして、この案内溝37には、第3図で明示
するように、弁箱2の上部内壁に固設された案内部材38
の側部案内爪39が嵌まり込んで、前記押さえ部材36を摺
動可能に支持している。40および41は、ハウジング31に
内装されたブツシユおよびグランドパツキン、42はグラ
ンドパツキン押さえである。
The holding member 36 extends in parallel with the direction of the flow path 5, and its tip end can face the side surface of the gate valve body 7, and guide grooves 37 are formed in the longitudinal direction of both sides. Have been. As shown in FIG. 3, a guide member 38 fixed to the upper inner wall of the valve box 2 is provided in the guide groove 37.
The side guide claws 39 are fitted to support the holding member 36 in a slidable manner. Reference numerals 40 and 41 denote a bush and a gland packing provided in the housing 31, and reference numeral 42 denotes a gland packing holder.

かくして、油圧シリンダ24が作動しそのピストンロツ
ドが延びると、レバー29、駆動軸28そしてレバー34を介
して、押さえ部材36が仕切弁体7方向に進むとともに、
その仕切弁体7が一方の弁座11に密着するようにその一
側面部を押圧し、前記弁座11との間でその仕切弁体7を
挟持固定する。
Thus, when the hydraulic cylinder 24 is operated and its piston rod is extended, the pressing member 36 advances toward the gate valve 7 via the lever 29, the drive shaft 28 and the lever 34,
One side portion of the gate valve 7 is pressed so as to be in close contact with one of the valve seats 11, and the gate valve 7 is sandwiched and fixed between the valve seat 11 and the valve seat 11.

なお、油圧シリンダ24は、仕切弁体7が昇降する際に
は、その作動を停止して押さえ部材36による仕切弁体7
の押圧を解除するようになつている。
When the gate valve body 7 moves up and down, the hydraulic cylinder 24 stops its operation and stops the gate valve body 7 by the holding member 36.
Is released.

また、図示実施例では、1つの押さえ部材36によつて
仕切弁体7を押圧する構成としたが、仕切弁体7が高重
量のものについては、複数個の押さえ部材36によつて押
圧する構成とするのが望ましい。
In the illustrated embodiment, the gate valve 7 is pressed by one pressing member 36. However, when the gate valve 7 is heavy, the gate valve 7 is pressed by a plurality of pressing members 36. It is desirable to have a configuration.

次に、このような構成からなる仕切弁の使用法につい
て説明すると、仕切弁体7が完全に閉じる前、例えば八
部通り閉じたところで、送水弁18および排水弁21を開弁
して、洗いだし水を、流路5内を流れる流体の流れの方
向に対して直交する方向に凹溝13内へと送り込む。洗い
だし水は、凹溝13内に溜まつている土、砂、ゴミなどを
洗い流し、凹溝13を挟んで直接対面するように送水口16
aと向かい合つて凹溝13に開口する排水口17aへ直接押し
やり、その排水口17aに通じる排水管23を介して弁箱2
外へと排出する。仕切弁体7が完全に閉じる前に洗いだ
し水を送水することにより、仕切弁体7が閉じる際に弁
座10,11との間に挟まり込むようなゴミなども取り除く
ことができる。仕切弁体7が完全に閉じたところで、送
水弁18および排水弁21を閉弁して、洗いだし水の送水を
遮断する。もちろん、場合によつては仕切弁体7が完全
に閉じたところで、洗いだし水を凹溝13へと送水するよ
うにしても良い。
Next, a method of using the gate valve having such a configuration will be described. Before the gate valve body 7 is completely closed, for example, when the eight-part closing is performed, the water supply valve 18 and the drain valve 21 are opened to wash. The soaking water is fed into the groove 13 in a direction perpendicular to the direction of the flow of the fluid flowing in the flow path 5. The washing water is used to wash away dirt, sand, dirt, and the like accumulated in the groove 13, and the water outlet 16 is provided so as to directly face the groove 13 therebetween.
and directly pushes into a drain port 17a opening in the concave groove 13 and a valve box 2 through a drain pipe 23 communicating with the drain port 17a.
Discharge to the outside. By supplying the washing water before the gate valve element 7 is completely closed, dust or the like that is caught between the valve seats 10 and 11 when the gate valve element 7 is closed can be removed. When the gate valve element 7 is completely closed, the water supply valve 18 and the drain valve 21 are closed to shut off the supply of the wash water. Of course, in some cases, the flush water may be supplied to the groove 13 when the gate valve 7 is completely closed.

また、第4図で示すように、仕切弁体7を半開き状態
にして流量の調整を行うような場合にあつては、油圧シ
リンダ24を作動させて、押さえ部材36を前進駆動させ
る。押さえ部材36は、仕切弁体7が一方の弁座11に密着
するようにその一側面部を押圧し、前記弁座11との間で
その仕切弁体7を挟持固定する。よつて、たとえ流体物
が激しくぶるかるようなことがあつても仕切弁体7のガ
タツキはなく、仕切弁体7自身あるいは弁座10,11を傷
めるようなことがなくなる。
In addition, as shown in FIG. 4, in the case where the flow rate is adjusted with the gate valve body 7 in a half-open state, the hydraulic cylinder 24 is operated to drive the holding member 36 forward. The pressing member 36 presses one side surface of the gate valve 7 so that the gate valve 7 is in close contact with one of the valve seats 11, and clamps and fixes the gate valve 7 with the valve seat 11. Therefore, even if the fluid material collides violently, the gate valve 7 does not rattle, and the gate valve 7 itself or the valve seats 10 and 11 are not damaged.

仕切弁体7をこのような半開き状態から全開あるいは
完全に閉じる状態に移行させる際には、仕切弁体7を上
下させる前に油圧シリンダ24の作動を停止させ、押さえ
部材36を第2図で示すような元の状態に復帰させて、仕
切弁体7の押圧を解除する。
When shifting the gate valve element 7 from such a half-open state to a fully open state or a completely closed state, the operation of the hydraulic cylinder 24 is stopped before the gate valve element 7 is moved up and down, and the holding member 36 is moved in FIG. It is returned to the original state as shown, and the pressing of the gate valve 7 is released.

なお、この発明は、既述した実施例の構成に限定され
るものでなく、例えば、仕切弁体7にくさび状の勾配を
形成しないなどその具体的構造を変更したり、あるいは
送水管20および排水管23の取り付け構造を変更するな
ど、この発明の趣旨を逸脱しない範囲で各部の構成を任
意に変更することができる。
Note that the present invention is not limited to the configuration of the embodiment described above. For example, the specific structure of the gate valve body 7 is not changed such that a wedge-shaped gradient is not formed, or the water pipe 20 and The configuration of each part can be arbitrarily changed without departing from the spirit of the present invention, such as by changing the mounting structure of the drain pipe 23.

(発明の効果) 以上、詳述したところから明らかなように、この発明
に係る仕切弁によれば、仕切弁体直下の凹溝内へ、洗い
だし水を、通水することにより、凹溝内に溜まる土、
砂、ゴミなどを洗い流して、凹溝を挟んで直接対面する
ように送水口と向かい合つて凹溝に開口する排水口へ直
接押しやるので、弁箱の流路内に流れる流体をせき止め
ることなく、しかも、凹溝内に溜まる土、砂、ゴミなど
を、特別の作業、労力を要せずして効率良く簡単に弁箱
外部へと排出できる。よつて、前記凹溝内に土、砂、ゴ
ミなどが固く堆積することもなく、仕切弁体は常に流路
を完全に閉じるように下降でき、漏水の発生を未然に防
止することができる。
(Effects of the Invention) As is apparent from the detailed description above, according to the gate valve of the present invention, the flushing water flows into the concave groove immediately below the gate valve body, thereby forming the concave groove. Soil that accumulates inside
Rinse away sand, dirt, etc., and push directly to the drain port that opens in the concave groove facing the water supply port so as to face directly across the groove, without damping the fluid flowing in the flow path of the valve box, In addition, the soil, sand, dust and the like accumulated in the groove can be efficiently and easily discharged to the outside of the valve box without requiring any special work or labor. Therefore, the partition valve body can always descend so as to completely close the flow path without solidly accumulating soil, sand, dust and the like in the concave groove, and it is possible to prevent the occurrence of water leakage.

また、送水管および排水管に、仕切弁体が流路を完全
に閉じる前に開弁し、かつ、流路を完全に閉じた後に閉
弁するように制御された、送排水の弁を設けることによ
り、仕切弁体が閉じる際に弁座との間に挟まり込むよう
なゴミなども取り除くことができる。
Further, the water supply pipe and the drain pipe are provided with a water supply / drainage valve that is controlled to open before the gate valve completely closes the flow path, and to close after completely closing the flow path. Thus, dust or the like that is caught between the gate valve body and the valve seat when the gate valve body closes can be removed.

また、洗いだし水が、圧縮空気とともに送水されるジ
エツト水であると、凹溝内に溜まる土、砂、ゴミなど
を、さらに一層容易に洗い流して、弁箱外部へと排出で
きる。
Further, if the washing water is jet water supplied with compressed air, the soil, sand, dust and the like accumulated in the groove can be more easily washed out and discharged to the outside of the valve box.

【図面の簡単な説明】[Brief description of the drawings]

第1図はこの発明に係る仕切弁において仕切弁体が開い
た状態の正面図、第2図は前記仕切弁において仕切弁体
が閉じた状態の縦断側面図、第3図は前記仕切弁に設け
た弁体ブレ止め機構の部分拡大断面図、第4図は前記仕
切弁において仕切弁体が半開き状態における縦断側面図
である。 2……弁箱、5……流路 7……仕切弁体、13……凹溝 16a……送水口、17a……排水口 18……送水弁、20……送水管 21……排水弁、23……排水管
FIG. 1 is a front view of a gate valve according to the present invention in a state in which a gate valve is open, FIG. 2 is a vertical side view of the gate in a state in which the gate valve is closed, and FIG. FIG. 4 is a vertical sectional side view of the gate valve in a half-open state in the gate valve. 2 ... valve box, 5 ... flow path 7 ... gate valve element, 13 ... groove 16a ... water supply port, 17a ... drainage port 18 ... water supply valve, 20 ... water supply pipe 21 ... drainage valve , 23 …… Drain pipe

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】弁箱の流路に対してほぼ直交方向に昇降し
てその流路を開閉する仕切弁体と、この仕切弁体が下降
して前記流路を完全に閉じることができるように、仕切
弁体の直下の弁箱内底部に、その仕切弁体の下部との当
接を避けるための凹溝とを備えた仕切弁において、 前記凹溝に開口し、その凹溝を挟んで直接対面するよう
に互いに向かい合う送水口および排水口を設け、かつ、
前記弁箱に、その送水口に通じる送水管およびその排水
口に通じる排水管を取り付けて、これらの送水管および
排水管を介して、洗いだし水を、前記凹溝内に送り込み
かつ通過させて、前記凹溝内に溜まつた土、砂、ゴミな
どを前記洗いだし水とともに弁箱外へと排出できるよう
にした仕切弁。
1. A gate valve body which moves up and down in a direction substantially perpendicular to a flow path of a valve box to open and close the flow path, and a gate valve body which moves down to completely close the flow path. A gate valve provided with a concave groove for avoiding contact with the lower part of the gate valve body at the bottom in the valve box immediately below the gate valve body. Water and water outlets facing each other so as to face each other directly, and
Attached to the valve box is a water pipe leading to the water inlet and a drain pipe leading to the water outlet, and through these water pipes and the drain pipe, the washing water is fed into and passed through the groove. A gate valve configured to discharge dirt, sand, dust, and the like accumulated in the groove to the outside of the valve box together with the washing water.
【請求項2】前記送水管および排水管には、それぞれ、
前記仕切弁体が流路を完全に閉じる前に開弁するように
制御されて前記洗いだし水を送水および排水し、かつ、
前記仕切弁体が流路を完全に閉じた後に閉弁するように
制御されて前記洗いだし水の送水および排水を停止する
送水弁および排水弁が設けられいる請求項1に記載の仕
切弁。
2. The water pipe and the drain pipe, respectively,
The sluice valve is controlled to open before the flow path is completely closed, sending and discharging the rinsing water, and
2. The gate valve according to claim 1, further comprising a water supply valve and a drain valve that are controlled so as to close after the gate valve completely closes the flow path and stop the water supply and drainage of the wash water. 3.
【請求項3】前記洗いだし水は、圧縮空気とともに送水
されるジエツト水である請求項1または2に記載の仕切
弁。
3. The gate valve according to claim 1, wherein the rinsing water is jet water supplied with compressed air.
JP2268202A 1990-10-04 1990-10-04 Gate valve Expired - Lifetime JP2579832B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2268202A JP2579832B2 (en) 1990-10-04 1990-10-04 Gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2268202A JP2579832B2 (en) 1990-10-04 1990-10-04 Gate valve

Publications (2)

Publication Number Publication Date
JPH04145272A JPH04145272A (en) 1992-05-19
JP2579832B2 true JP2579832B2 (en) 1997-02-12

Family

ID=17455343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2268202A Expired - Lifetime JP2579832B2 (en) 1990-10-04 1990-10-04 Gate valve

Country Status (1)

Country Link
JP (1) JP2579832B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2350412A (en) 1999-05-22 2000-11-29 Robert Peter Enston Freeing of seized valves
JP2011241867A (en) * 2010-05-17 2011-12-01 Hitachi-Ge Nuclear Energy Ltd Valve which can be cleaned and valve cleaning system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5053499U (en) * 1973-09-20 1975-05-22
JPS5869170U (en) * 1981-10-31 1983-05-11 前澤工業株式会社 Attachment for removing dust during pipe cleaning in removable butterfly valves
JPS59166076U (en) * 1983-04-22 1984-11-07 日立造船株式会社 non-return valve
JPS643171U (en) * 1987-06-26 1989-01-10

Also Published As

Publication number Publication date
JPH04145272A (en) 1992-05-19

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