JP2980153B2 - Control device for vacuum valve - Google Patents
Control device for vacuum valveInfo
- Publication number
- JP2980153B2 JP2980153B2 JP6105827A JP10582794A JP2980153B2 JP 2980153 B2 JP2980153 B2 JP 2980153B2 JP 6105827 A JP6105827 A JP 6105827A JP 10582794 A JP10582794 A JP 10582794A JP 2980153 B2 JP2980153 B2 JP 2980153B2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- valve
- vacuum
- atmospheric pressure
- pressure
- 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
Links
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- Sewage (AREA)
- Fluid-Driven Valves (AREA)
- Details Of Valves (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、真空式汚水収集システ
ムを用いた下水管路において使用する真空弁の制御装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a vacuum valve used in a sewage line using a vacuum type wastewater collection system.
【0002】[0002]
【従来の技術】従来の真空式汚水収集システムとして
は、例えば特開平2−292426号公報に記載された
ものがあり、真空下水管路における真空弁の制御装置
は、図2に示すようなものであった。図2において、真
空弁1は一端が真空汚水管2に連通し、他端が真空弁吸
込管3に連通している。真空汚水管2は真空ポンプ場の
真空源(図示せず)に連通し、真空弁吸込管3は各家庭
の自然流下管が集まる汚水桝に連通している。真空弁1
の内部に配置した弁体4は、弁箱1a内の弁座1bに圧
接した閉状態と、弁座1bから離間した開状態とにわた
って出退自在である。弁箱1aの上部に形成したシリン
ダ室1cの内部には弁体4に連結したピストン1dを配
置しており、ピストン1dの背面に弁体4を閉動方向に
付勢するスプリング1eを設けている。2. Description of the Related Art A conventional vacuum-type wastewater collecting system is disclosed, for example, in Japanese Patent Application Laid-Open No. 2-292426. A control device for a vacuum valve in a vacuum sewage pipe is as shown in FIG. Met. In FIG. 2, one end of the vacuum valve 1 communicates with the vacuum sewage pipe 2 and the other end communicates with the vacuum valve suction pipe 3. The vacuum sewage pipe 2 communicates with a vacuum source (not shown) of a vacuum pumping station, and the vacuum valve suction pipe 3 communicates with a sewage basin where the natural drain pipes of each household gather. Vacuum valve 1
The valve element 4 disposed inside the valve body 1 is movable in and out of a closed state in which the valve body 4 is pressed against the valve seat 1b in the valve box 1a and an open state which is separated from the valve seat 1b. A piston 1d connected to the valve body 4 is disposed inside a cylinder chamber 1c formed at an upper portion of the valve box 1a, and a spring 1e for urging the valve body 4 in the closing direction is provided on the back surface of the piston 1d. I have.
【0003】真空弁1の制御装置5は、圧力検出室6
と、圧力検出室6に副ダイヤフラム7を介して隣接する
大気圧室8と、大気圧室8に小弁口9を通して連通する
可変真空室10と、可変真空室10に主ダイヤフラム1
1を介して隣接する恒真空室12と、恒真空室12に隔
壁13を介して隣接する分配室14と、分配室14に大
弁口15を介して連通する通路16と、通路16に連通
するとともに大弁口15に対向して開口する大気導入孔
17とを備えており、圧力検出室6が気体圧導入管18
を通して汚水桝Sの水位検知管18aに連通し、大気導
入孔17が通気管19を通して大気開放している。The control device 5 of the vacuum valve 1 includes a pressure detection chamber 6
An atmospheric pressure chamber 8 adjacent to the pressure detection chamber 6 via a sub-diaphragm 7, a variable vacuum chamber 10 communicating with the atmospheric pressure chamber 8 through a small valve port 9, and a main diaphragm 1 connected to the variable vacuum chamber 10.
1, a distribution chamber 14 adjacent to the constant vacuum chamber 12 via a partition 13, a passage 16 communicating with the distribution chamber 14 via a large valve port 15, and a communication with the passage 16. And an air introduction hole 17 which is opened opposite to the large valve port 15, and the pressure detection chamber 6 is provided with a gas pressure introduction pipe 18.
Through the water level detection pipe 18a of the wastewater basin S, and the air introduction hole 17 is opened to the atmosphere through the ventilation pipe 19.
【0004】大気圧室8は通気路20を通して大気導入
孔17に連通しており、分配室14は配管21を通して
恒真空室12および可変真空室10に連通している。可
変真空室10に連通する配管21の途中には流量調整弁
22を介装している。可変真空室10には副ダイヤフラ
ム7に連動して小弁口9を開閉する弁装置23を設けて
いる。恒真空室12と分配室14を隔てる隔壁13を出
退自在に貫通して配置した弁棒24は、一端を主ダイヤ
フラム11に連結し、他端に大弁口15を開閉する弁2
5を設けたものであり、隔壁13と主ダイヤフラム11
の間に介装したコイルスプリング26が弁25を大弁口
15の閉動方向に付勢している。弁25は大弁口15を
閉塞する位置と、大気導入孔17の開口を閉塞する位置
にわたって出退する。制御装置5の分配室14は第1導
管27を通して真空汚水管2に連通し、真空弁1のスプ
リング1eが内在するシリンダ室1cの後部室は第2導
管28を通して通路16に連通している。また、シリン
ダ室1cのピストン1dを隔てた前部室には通気管19
から分岐した吸排気導管29が連通している。The atmospheric pressure chamber 8 communicates with the air introduction hole 17 through a ventilation path 20, and the distribution chamber 14 communicates with the constant vacuum chamber 12 and the variable vacuum chamber 10 through a pipe 21. A flow control valve 22 is interposed in the middle of a pipe 21 communicating with the variable vacuum chamber 10. The variable vacuum chamber 10 is provided with a valve device 23 that opens and closes the small valve port 9 in conjunction with the sub-diaphragm 7. A valve stem 24, which extends through a partition 13 separating the constant vacuum chamber 12 and the distribution chamber 14 so as to be able to move back and forth, has one end connected to the main diaphragm 11 and the other end having a valve 2 for opening and closing the large valve port 15.
5 and a partition 13 and a main diaphragm 11
A coil spring 26 interposed therebetween urges the valve 25 in the closing direction of the large valve port 15. The valve 25 moves back and forth between a position where the large valve opening 15 is closed and a position where the opening of the air introduction hole 17 is closed. The distribution chamber 14 of the control device 5 communicates with the vacuum sewage pipe 2 through the first conduit 27, and the rear chamber of the cylinder chamber 1 c in which the spring 1 e of the vacuum valve 1 resides communicates with the passage 16 through the second conduit 28. A vent pipe 19 is provided in the front chamber of the cylinder chamber 1c separated by the piston 1d.
Is connected to the intake / exhaust conduit 29 branching from the outlet.
【0005】この構成においては、汚水桝Sにおける汚
水が少ない時には、弁体4は弁座1bに圧接する閉状態
にあり、弁装置23が小弁口9を閉塞し、弁25が大弁
口15を閉塞する。この状態において、真空汚水管2内
の真空圧は第1導管27を通して分配室14に作用し、
さらに配管21を通して可変真空室10および恒真空室
12に作用する。このため、可変真空室10と恒真空室
12が同圧となり、コイルスプリング26の付勢力を受
けて弁25が大弁口15を閉塞する。一方、大気導入孔
17における大気圧が通気路20を通して大気圧室8に
作用し、副ダイヤフラム7は弁装置23から離間し、弁
装置23が小弁口9を閉塞する。In this configuration, when the amount of sewage in the sewage basin S is small, the valve body 4 is in a closed state in which it is pressed against the valve seat 1b, the valve device 23 closes the small valve port 9, and the valve 25 is closed. 15 is closed. In this state, the vacuum pressure in the vacuum sewage pipe 2 acts on the distribution chamber 14 through the first conduit 27,
Further, it acts on the variable vacuum chamber 10 and the constant vacuum chamber 12 through the pipe 21. Therefore, the variable vacuum chamber 10 and the constant vacuum chamber 12 have the same pressure, and the valve 25 closes the large valve port 15 by receiving the urging force of the coil spring 26. On the other hand, the atmospheric pressure in the air introduction hole 17 acts on the atmospheric pressure chamber 8 through the ventilation path 20, the sub-diaphragm 7 is separated from the valve device 23, and the valve device 23 closes the small valve port 9.
【0006】汚水桝Sに汚水が溜ると、水位の上昇に伴
って水位検知管18aの内部圧力が上昇し、気体圧導入
管18を通して圧力検出室6に作用する空気圧が高ま
り、副ダイヤフラム7が大気圧室8の側に変位して弁装
置23を押圧し、弁装置23が小弁口9を開放する。小
弁口9の開放により、大気圧室8に作用する大気圧が可
変真空室10に作用し、主ダイヤフラム11が恒真空室
12の側に変位して弁棒24をコイルスプリング26の
付勢力に抗して押圧し、弁25が大弁口15から離間し
て大弁口15を開放するとともに、大弁口15に対向す
る大気導入孔17の開口を閉塞する。When the sewage accumulates in the sewage basin S, the internal pressure of the water level detecting pipe 18a rises as the water level rises, the air pressure acting on the pressure detecting chamber 6 through the gas pressure introducing pipe 18 increases, and the sub-diaphragm 7 The valve device 23 is displaced toward the atmospheric pressure chamber 8 and presses the valve device 23, and the valve device 23 opens the small valve port 9. When the small valve opening 9 is opened, the atmospheric pressure acting on the atmospheric pressure chamber 8 acts on the variable vacuum chamber 10, the main diaphragm 11 is displaced toward the constant vacuum chamber 12, and the valve rod 24 is biased by the coil spring 26. The valve 25 is separated from the large valve opening 15 to open the large valve opening 15 and closes the opening of the air introduction hole 17 facing the large valve opening 15.
【0007】このため、第1導管27を通して分配室1
4に作用する真空汚水管2の真空圧が大弁口15を通し
て通路16に作用し、さらに第2導管28を通してシリ
ンダ室1cの後部室に作用する。一方、シリンダ室1c
の前部室には吸排気管29を通して通気管19の大気圧
が作用しており、シリンダ室1cの前部室に作用する大
気圧とシリンダ室1cの後部室に作用する真空圧との差
圧によってピストン1dがスプリング1cの付勢力に抗
して後退し、弁体4が弁座1bから離間して開状態とな
る。この状態で、汚水桝に滞留する汚水が真空弁吸込管
3および真空汚水管1を通して吸い上げられる。For this reason, the distribution chamber 1 is passed through the first conduit 27.
The vacuum pressure of the vacuum sewage pipe 2 acting on 4 acts on the passage 16 through the large valve port 15 and further acts on the rear chamber of the cylinder chamber 1c through the second conduit 28. On the other hand, the cylinder chamber 1c
At the front chamber, the atmospheric pressure of the ventilation pipe 19 is acting through the intake / exhaust pipe 29, and the piston is operated by the differential pressure between the atmospheric pressure acting on the front chamber of the cylinder chamber 1c and the vacuum pressure acting on the rear chamber of the cylinder chamber 1c. 1d is retracted against the urging force of the spring 1c, and the valve body 4 is separated from the valve seat 1b to be in an open state. In this state, the sewage remaining in the sewage tank is sucked up through the vacuum valve suction pipe 3 and the vacuum sewage pipe 1.
【0008】吸引によって汚水桝の水位が低下すると、
水位検知管18aの内部圧力の低下に伴って気体圧導入
管18を通して圧力検出室6に作用する空気圧が低下
し、副ダイヤフラム7が大気圧室8の大気圧に押されて
通常状態に復帰し、弁装置23に対する押圧力を解除
し、弁装置23が小弁口9を閉塞する。この状態で可変
真空室10が真空圧となり、主ダイヤフラム11がコイ
ルスプリング26の付勢力を受けて通常状態に復帰する
とともに、弁25が大弁口15を閉塞する。このため、
シリンダ室1cの前部室と後部室に共に大気圧が作用
し、スプリング1eの付勢力によって弁体4が弁座1b
に圧接する位置に閉動し、通常状態に復帰する。When the water level of the sewage basin drops due to suction,
As the internal pressure of the water level detecting pipe 18a decreases, the air pressure acting on the pressure detecting chamber 6 through the gas pressure introducing pipe 18 decreases, and the sub-diaphragm 7 is pushed by the atmospheric pressure of the atmospheric pressure chamber 8 to return to the normal state. Then, the pressing force on the valve device 23 is released, and the valve device 23 closes the small valve port 9. In this state, the variable vacuum chamber 10 becomes a vacuum pressure, the main diaphragm 11 receives the urging force of the coil spring 26, returns to the normal state, and the valve 25 closes the large valve port 15. For this reason,
Atmospheric pressure acts on both the front chamber and the rear chamber of the cylinder chamber 1c, and the valve body 4 is moved by the urging force of the spring 1e.
It closes to the position where it comes into pressure contact with, and returns to the normal state.
【0009】[0009]
【発明が解決しようとする課題】しかしながら、上記し
たような制御装置では、装置の内部に結露が生じたりゴ
ミが浸入したりすると、制御装置が誤動作して真空弁の
開時間が長くなることがあり、真空弁を通過する汚水と
空気の気液比を予め定められた値に保つことができない
という問題がある。However, in the above-described control device, if dew condensation occurs or dust enters inside the control device, the control device may malfunction and the opening time of the vacuum valve may be prolonged. In addition, there is a problem that the gas-liquid ratio of sewage and air passing through the vacuum valve cannot be maintained at a predetermined value.
【0010】本発明は上記問題を解決するもので、真空
弁の開状態において制御装置の誤動作が生じたときに、
強制的に弁体を閉動させることができる真空弁の制御装
置を提供することを目的とするものである。The present invention solves the above-mentioned problem. When a malfunction of the control device occurs when the vacuum valve is open,
An object of the present invention is to provide a vacuum valve control device that can forcibly close a valve body.
【0011】[0011]
【課題を解決するための手段】上記問題を解決するため
に、本発明の真空弁の制御装置は、真空弁に接続した真
空汚水管路に連通する真空圧流路系と、大気圧下に連通
する大気圧流路系と、真空弁のシリンダ室の後部室に連
通する通路と、この通路に対する真空圧流路系の接続口
をなす大弁口と、前記通路に対する大気圧流路系の接続
口をなして大弁口に対向して開口する大気導入孔と、大
弁口を閉塞する位置と大気導入孔の開口を閉塞する位置
にわたって出退する主弁手段と、真空圧流路系の恒真空
室と可変真空室を仕切り可変真空室の圧力を受けて主弁
手段を大気導入孔の開口に向けて押圧可能な主ダイヤフ
ラムと、可変真空室に小弁口を介して連通する大気圧室
と、大気圧室に配置した小弁口を開閉する副弁手段と、
圧力検出室と大気圧室とを仕切り圧力検出室の圧力を受
けて副弁手段を開動方向に付勢する副ダイヤフラムと、
大気圧流路系の一部をなして大気導入孔に連通する通気
管と、通気管の途中から分岐して真空弁のシリンダ室の
前部室に連通する吸排気導管と、汚水桝内の水位を気体
圧として圧力検出室に導入する気体圧導入手段とを備え
たを備えた制御装置において、真空弁のシリンダ室の前
部室と後部室とを連通させる大気圧導入管を設け、この
大気圧導入管に流量調節手段を介装したものである。In order to solve the above-mentioned problems, a control apparatus for a vacuum valve according to the present invention communicates with a vacuum pressure passage system communicating with a vacuum sewage pipe connected to a vacuum valve under atmospheric pressure. And a passage communicating with a rear chamber of the cylinder chamber of the vacuum valve, a large valve opening serving as a connection port of the vacuum pressure passage system to this passage, and a connection port of the atmospheric pressure passage system for the passage. An air introduction hole that opens to face the large valve opening, main valve means that moves back and forth over a position that closes the large valve opening and a position that closes the opening of the air introduction hole, and a constant vacuum of the vacuum pressure flow path system. A main diaphragm capable of separating the chamber from the variable vacuum chamber and receiving pressure from the variable vacuum chamber to press the main valve means toward the opening of the air introduction hole; and an atmospheric pressure chamber communicating with the variable vacuum chamber via a small valve port. Auxiliary valve means for opening and closing a small valve port arranged in the atmospheric pressure chamber;
A sub-diaphragm that partitions the pressure detection chamber and the atmospheric pressure chamber and receives the pressure of the pressure detection chamber and urges the sub-valve means in the opening direction;
A vent pipe that forms part of the atmospheric pressure flow path system and communicates with the air introduction hole; an intake / exhaust conduit that branches off from the middle of the vent pipe and communicates with the front chamber of the cylinder chamber of the vacuum valve; And a gas pressure introducing means for introducing a gas pressure into the pressure detection chamber, wherein an atmospheric pressure introducing pipe for communicating the front chamber and the rear chamber of the cylinder chamber of the vacuum valve is provided. This is one in which flow control means is interposed in the introduction pipe.
【0012】[0012]
【作用】真空弁の開状態においては、シリンダ室の後部
室は真空になっており、シリンダ室の前部室には通気管
より吸排気導管を通じて空気が導入されている。上記構
成によれば、この前部室と後部室とを流量調整手段を備
えた大気圧導入管により連通させたため、前部室に導入
される空気は流量調整手段を通して微量ずつ後部室へ流
入していき、一定時間後に前部室と後部室がともに大気
圧となった時点で真空弁が閉動される。When the vacuum valve is open, the rear chamber of the cylinder chamber is evacuated, and air is introduced into the front chamber of the cylinder chamber through a ventilation pipe through a ventilation pipe. According to the above configuration, the front chamber and the rear chamber are communicated with each other by the atmospheric pressure introduction pipe having the flow rate adjusting means, so that a small amount of air introduced into the front chamber flows into the rear chamber through the flow rate adjusting means. After a certain period of time, when both the front chamber and the rear chamber reach the atmospheric pressure, the vacuum valve is closed.
【0013】[0013]
【実施例】以下、本発明の一実施例を図1の要部断面図
を参照しながら説明する。先に図2において説明したも
のと同様の作用を行う部材については同一番号を付して
説明を省略する。図1において、通気管より真空弁1の
シリンダ室の前部室1fに導かれた吸排気導管29は、
途中で分岐して、シリンダ室の後部室1gに接続する大
気圧導入管31を設けており、前部室1fと後部室1g
とは大気圧導入管31により連通している。大気圧導入
管31には、管内の空気の流量を調節する絞り弁32が
介装されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to a sectional view of a main part of FIG. Members that perform the same operations as those described above with reference to FIG. 2 are denoted by the same reference numerals, and description thereof is omitted. In FIG. 1, an intake / exhaust conduit 29 guided from a ventilation pipe to a front chamber 1 f of a cylinder chamber of the vacuum valve 1 includes:
An atmospheric pressure introducing pipe 31 is provided which branches off on the way and is connected to the rear chamber 1g of the cylinder chamber. The front chamber 1f and the rear chamber 1g are provided.
Are communicated with each other by an atmospheric pressure introducing pipe 31. The atmospheric pressure introducing pipe 31 is provided with a throttle valve 32 for adjusting a flow rate of air in the pipe.
【0014】以下、上記構成における作用を説明する。
真空弁1の開状態においては、シリンダ室の後部室1g
は真空になっており、シリンダ室の前部室1fには通気
管より吸排気導管29を通じて空気が導入されている。
しかるに、後部室1gに大気圧導入管31が接続されて
いるので、吸排気導管29からの空気が大気圧導入管3
1と絞り弁32とを通じて微量ずつ後部室1gに流入
し、一定時間後には後部室1g内は大気圧となる。この
ようにして後部室1gが前部室1fとともに大気圧とな
った時点で、スプリング1eに付勢されてピストン1が
押し出され、弁体4が弁座1bに当接して、真空弁1が
閉じられる。絞り弁32に代えて、オリフィスなどの流
量調節手段を用いても同じ効果が得られる。The operation of the above configuration will be described below.
When the vacuum valve 1 is open, the rear chamber 1g of the cylinder chamber
Is in a vacuum, and air is introduced into the front chamber 1f of the cylinder chamber through an intake / exhaust conduit 29 from a ventilation pipe.
However, since the atmospheric pressure introducing pipe 31 is connected to the rear chamber 1g, the air from the intake / exhaust pipe 29 is supplied to the atmospheric pressure introducing pipe 3
1 and a small amount flow into the rear chamber 1g through the throttle valve 32, and after a certain time, the pressure in the rear chamber 1g becomes atmospheric pressure. When the rear chamber 1g reaches the atmospheric pressure together with the front chamber 1f in this way, the piston 1 is pushed by the spring 1e, the piston 1 is pushed out, the valve body 4 comes into contact with the valve seat 1b, and the vacuum valve 1 is closed. Can be The same effect can be obtained by using a flow rate adjusting means such as an orifice instead of the throttle valve 32.
【0015】[0015]
【発明の効果】以上のように本発明によれば、真空弁の
シリンダ室の前部室と後部室とを大気圧導入管により連
通させ、この大気圧導入管に絞り弁やオリフィスなどの
流量調節手段を介装したため、一定時間後に前部室と後
部室をともに大気圧とすることができ、これによって、
強制的に真空弁を閉動させることができる。したがっ
て、制御装置の誤動作によって真空弁が開状態になった
り開時間が長くなったときも、このようにして一定時間
後に強制的に真空弁を閉じ、真空弁を通過する汚水と空
気の気液比を予め定めた値に保って、汚水をスムーズに
真空ポンプ場へ送ることができる。As described above, according to the present invention, the front chamber and the rear chamber of the cylinder chamber of the vacuum valve are communicated with each other through the atmospheric pressure introducing pipe, and the flow rate of the throttle valve, the orifice, and the like is adjusted to the atmospheric pressure introducing pipe. Since the means is interposed, both the front chamber and the rear chamber can be set to the atmospheric pressure after a certain time,
The vacuum valve can be forcibly closed. Therefore, even when the vacuum valve is opened or the open time is prolonged due to malfunction of the control device, the vacuum valve is forcibly closed after a certain period of time in this manner, and the gas-liquid By maintaining the ratio at a predetermined value, the wastewater can be smoothly sent to the vacuum pumping station.
【図1】本発明の一実施例の制御装置の要部を示した断
面図である。FIG. 1 is a sectional view showing a main part of a control device according to an embodiment of the present invention.
【図2】従来の制御装置の全体構成を示した説明図であ
る。FIG. 2 is an explanatory diagram showing an overall configuration of a conventional control device.
1 真空弁 1c シリンダ室 1f 前部室 1g 後部室 4 弁体 5 制御装置 6 圧力検出室 7 副ダイヤフラム 8 大気圧室 9 小弁口 10 可変真空室 11 主ダイヤフラム 16 通路 17 大気導入孔 19 通気管 23 弁装置 25 弁 29 吸排気導管 31 大気圧導入管 32 絞り弁(流量調節手段) Reference Signs List 1 vacuum valve 1c cylinder chamber 1f front chamber 1g rear chamber 4 valve body 5 control device 6 pressure detection chamber 7 sub-diaphragm 8 atmospheric pressure chamber 9 small valve port 10 variable vacuum chamber 11 main diaphragm 16 passage 17 air introduction hole 19 ventilation pipe 23 Valve device 25 Valve 29 Intake / exhaust conduit 31 Atmospheric pressure introduction pipe 32 Throttle valve (flow control means)
Claims (1)
る真空圧流路系と、大気圧下に連通する大気圧流路系
と、真空弁のシリンダ室の後部室に連通する通路と、こ
の通路に対する真空圧流路系の接続口をなす大弁口と、
前記通路に対する大気圧流路系の接続口をなして大弁口
に対向して開口する大気導入孔と、大弁口を閉塞する位
置と大気導入孔の開口を閉塞する位置にわたって出退す
る主弁手段と、真空圧流路系の恒真空室と可変真空室を
仕切り可変真空室の圧力を受けて主弁手段を大気導入孔
の開口に向けて押圧可能な主ダイヤフラムと、可変真空
室に小弁口を介して連通する大気圧室と、大気圧室に配
置した小弁口を開閉する副弁手段と、圧力検出室と大気
圧室とを仕切り圧力検出室の圧力を受けて副弁手段を開
動方向に付勢する副ダイヤフラムと、大気圧流路系の一
部をなして大気導入孔に連通する通気管と、通気管の途
中から分岐して真空弁のシリンダ室の前部室に連通する
吸排気導管と、汚水桝内の水位を気体圧として圧力検出
室に導入する気体圧導入手段とを備えた制御装置におい
て、真空弁のシリンダ室の前部室と後部室とを連通させ
る大気圧導入管を設け、この大気圧導入管に流量調節手
段を介装したことを特徴とする真空弁の制御装置。A vacuum pressure passage system communicating with a vacuum sewage pipe connected to a vacuum valve, an atmospheric pressure passage system communicating under atmospheric pressure, a passage communicating with a rear chamber of a cylinder chamber of the vacuum valve, A large valve port serving as a connection port of the vacuum pressure flow path system to this passage;
An air introduction hole that forms a connection port of the atmospheric pressure flow path system to the passage and opens to face the large valve port, and a main port that moves back and forth over a position where the large valve port is closed and a position where the opening of the air introduction hole is closed. A valve means, a main diaphragm capable of partitioning a constant vacuum chamber and a variable vacuum chamber of the vacuum pressure flow path system and receiving pressure from the variable vacuum chamber to press the main valve means toward the opening of the air introduction hole; An atmospheric pressure chamber communicating through a valve port, sub-valve means for opening and closing a small valve port disposed in the atmospheric pressure chamber, and a sub-valve means for dividing the pressure detection chamber and the atmospheric pressure chamber and receiving the pressure of the pressure detection chamber Sub-diaphragm that urges the valve in the opening direction, a ventilation pipe that forms part of the atmospheric pressure flow path system and communicates with the air introduction hole, and branches off from the middle of the ventilation pipe and communicates with the front chamber of the cylinder chamber of the vacuum valve Gas to be introduced into the pressure detection chamber as gas pressure using the water level in the sewage tank In a control device provided with an introduction means, an atmospheric pressure introduction pipe for communicating a front chamber and a rear chamber of a cylinder chamber of a vacuum valve is provided, and a flow rate adjusting means is interposed in the atmospheric pressure introduction pipe. Control device for vacuum valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6105827A JP2980153B2 (en) | 1994-05-20 | 1994-05-20 | Control device for vacuum valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6105827A JP2980153B2 (en) | 1994-05-20 | 1994-05-20 | Control device for vacuum valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07310852A JPH07310852A (en) | 1995-11-28 |
JP2980153B2 true JP2980153B2 (en) | 1999-11-22 |
Family
ID=14417894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6105827A Expired - Lifetime JP2980153B2 (en) | 1994-05-20 | 1994-05-20 | Control device for vacuum valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2980153B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5292693B2 (en) * | 2006-12-07 | 2013-09-18 | トヨタ自動車株式会社 | Fuel cell system |
JP5194443B2 (en) * | 2006-12-08 | 2013-05-08 | トヨタ自動車株式会社 | Valve for fuel cell |
-
1994
- 1994-05-20 JP JP6105827A patent/JP2980153B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07310852A (en) | 1995-11-28 |
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