JPS58146705A - Exhaust valve of residual pressure in pneumatic pressure circuit - Google Patents

Exhaust valve of residual pressure in pneumatic pressure circuit

Info

Publication number
JPS58146705A
JPS58146705A JP2697482A JP2697482A JPS58146705A JP S58146705 A JPS58146705 A JP S58146705A JP 2697482 A JP2697482 A JP 2697482A JP 2697482 A JP2697482 A JP 2697482A JP S58146705 A JPS58146705 A JP S58146705A
Authority
JP
Japan
Prior art keywords
pressure
solenoid valve
valve
exhaust
residual 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.)
Pending
Application number
JP2697482A
Other languages
Japanese (ja)
Inventor
Satoshi Obata
小畑　敏
Shigeru Tajima
繁 田島
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP2697482A priority Critical patent/JPS58146705A/en
Publication of JPS58146705A publication Critical patent/JPS58146705A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3138—Directional control characterised by the positions of the valve element the positions being discrete
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40576—Assemblies of multiple valves
    • F15B2211/40584—Assemblies of multiple valves the flow control means arranged in parallel with a check valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
    • F15B2211/41536—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/47—Flow control in one direction only
    • F15B2211/473—Flow control in one direction only without restriction in the reverse direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE:To improve safety of operation, by integrally mounting a residual pressure exhaust valve to a solenoid valve of normally closed type connected to a load and immediately evacuating residual pressure in a circuit in the rear stage from the solenoid valve. CONSTITUTION:If the first solenoid valve 4 is selected to a right position, air pressure from a pressure source 2 reaches the second solenoid valve 5, when the valve 5 is placed, for instance, in a right position, the air pressure is introduced to a chamber RH of a pneumatic cylinder 1 via ports P2, B2 to move advancing a piston rod 1a. Under this operating condition, if a work stop signal is input, each solenoid 4a, 5a, 6b is deexcited to hold the valves 4, 5 to a normal position (neutral position). Then air pressure in a pressure pipe line 7c and pilot pipe line 7d is discharged to the atmosphere, and a residual pressure exhaust valve 10 is selected to a right position by spring tension. In consequence, air in main pipe lines 7a, 7b and the cylinder 1 is all discharged from exhaust ports R3, R4.

Description

【発明の詳細な説明】 この発明は、空気圧回路内の残圧【急速に排気できるよ
うにした残圧排気弁に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a residual pressure exhaust valve that can rapidly exhaust residual pressure in a pneumatic circuit.

−例として、第１図には複動形エアシリンダー１【駆動
するための従来のｉＩｋも一般的な空気圧回路【示す、
同図において、２は圧力源、８は一般的な空気圧調整ユ
ニット、４は入方圧カ切換用の６ポ一ト２位置タイプの
第１の電磁弁、りは同じく６ポ一ト８位置タイプ（ノー
マル・／　０−　ス）’竜ンタニ）のｌｌ＋２の電磁弁
ｔｅａ、６ｂは逆止弁付可変流量！ＩＩＩ整弁である。- As an example, FIG. 1 shows a conventional pneumatic circuit for driving a double-acting air cylinder 1.
In the figure, 2 is a pressure source, 8 is a general air pressure adjustment unit, 4 is a 6-point, 2-position type first solenoid valve for switching incoming pressure, and 2 is also a 6-point, 8-position type solenoid valve. Type (Normal / 0-S)'Ryuntani) ll+2 solenoid valve tea, 6b is a variable flow rate with a check valve! This is valve adjustment III.

このような空気圧囲路においては、第１の電磁弁４が図
中左方向にオフセット動作し、かつ第２の電磁弁６が中
立位置から左方向にオフセット動作したときにエアシリ
ンダー１のピストンロッド１ａが矢印Ａ、方向に往動し
、また第２の電磁弁６が申立位置から右方向にオフセッ
ト動作し九ときにピストンロッドｌａが矢印４方向に復
動するものである。In such an air pressure enclosure, when the first solenoid valve 4 is offset to the left in the figure and the second solenoid valve 6 is offset to the left from the neutral position, the piston rod of the air cylinder 1 1a moves forward in the direction of arrow A, the second solenoid valve 6 is offset from the applied position to the right, and at 9 o'clock, the piston rod la moves back in the direction of arrow 4.

しかしながら、上記の空気圧回路においては。However, in the pneumatic circuit described above.

作動停止信号あるいは非常停止信号により！１　。By a stop signal or an emergency stop signal! 1.

第２の電磁弁４，６がＯＦＦ　（消磁）状態となると各
電磁弁４，６はノーマル位置（第２の電磁弁にあっては
中立位置）に保持され、第２の電磁弁すの各々のポー）
　Ｐｇ　ｔ　Ｒｍｉ　＃　恥ｐ　’ｌ　ｒ　”富が全て
閉塞される定め、１ｌｉ２の電磁弁すとエアシリンダー
１とｔ結ぶ主管路７ｍ　、７ｂ内には空気圧が残圧とし
てそのまま残されることになる。When the second solenoid valves 4 and 6 are in the OFF (demagnetized) state, each of the solenoid valves 4 and 6 is held at the normal position (neutral position for the second solenoid valve), and each of the second solenoid valves Po)
Pg t Rmi # Shame p 'l r ``It is decided that all the wealth will be blocked, and when the solenoid valve 1li2 is operated, the air pressure will remain as residual pressure in the main pipes 7m and 7b connecting the air cylinder 1 and t.

このため、例えばエアシリンダーＩＶｔ駆動源とする図
外の機械装置の駆動機構について分解あるいは異常処理
【行なうと、たとえ前記空気圧（ロ）路自体が停止状態
にあっても（９）路内の残圧によりその駆動機構が作動
し、それ罠よって人体に危害ｉ加見たｐ他設備と干渉し
た〕して不測の事！Ｉを招くおそれがある。したがって
、このような安全上の点よりして空気圧回路内の残圧は
零にする必要がある。For this reason, for example, if the drive mechanism of a mechanical device (not shown) used as the air cylinder IVt drive source is disassembled or abnormally treated, even if the air pressure (b) path itself is stopped, (9) The drive mechanism was activated by the pressure, and the trap caused harm to the human body and interfered with other equipment. There is a risk of inviting I. Therefore, for safety reasons, it is necessary to reduce the residual pressure in the pneumatic circuit to zero.

この発明は以上のような点に鑑み、電磁弁がノーマルク
ローズド位置に切プ換見られたと春に該電磁弁よりも俵
段の回路内の残圧を急速に排気できるようにするとと【
目的としてなされたもので、この目的【達成するため本
発明においては、ｗ数の出力ボート會有するノーマルク
ローズドタイプの電磁弁に一体的に取着される排気弁に
して、そＯ排気弁本体は、負荷と電磁弁とを結ぶ管路に
それぞれに接続される複数の入力ポートと、大気に開放
される排気ポートと、電磁弁の前段から導かれ為パイロ
ット圧に応じて移動して前記入力ポートと排気ポートと
會連通・遮断するスプールとを有してなるものである。In view of the above-mentioned points, this invention is designed to enable the residual pressure in the circuit of the bale stage to be exhausted more rapidly than the solenoid valve in the spring when the solenoid valve is switched to the normally closed position.
In order to achieve this purpose, in the present invention, the exhaust valve is integrally attached to a normally closed type solenoid valve having an output boat of W number, and the exhaust valve body is , a plurality of input ports each connected to a pipe connecting the load and the solenoid valve, an exhaust port opened to the atmosphere, and a plurality of input ports that move according to the pilot pressure guided from the front stage of the solenoid valve. It has an exhaust port, and a spool that communicates with and shuts off communication.

次ＶＣ，この発明の実施ガミ図面に基づいて詳細に説明
する。ただし、前記従来例と同一部分には同一符号を付
すものとする。In the next VC, this invention will be explained in detail based on the drawings. However, the same parts as in the conventional example are given the same reference numerals.

すなわち、第２図〜第４図はこの発明の一実施例會示す
もので、特に第２図およびｔｉｋｓ図は残圧排気弁単体
での構成を示しておシ、残圧排気弁１０は前記第２の電
磁弁６の背面部に図外のボルトにより一体的に取着され
ているものである。That is, FIGS. 2 to 4 show one embodiment of the present invention, and especially FIG. 2 and TIKS show the configuration of the residual pressure exhaust valve alone, and the residual pressure exhaust valve 10 is the same as the one described above. It is integrally attached to the back side of the electromagnetic valve 6 of No. 2 with bolts not shown.

１１は全体として矩形状【なす平担な排気弁本体で、こ
の排気弁本体ｌｌ内には左右方向に移動可能なスプール
１２が収容されていて、その両側ｍはスプールカバー１
８およびスプリングホルダー１４忙て閉塞されている。Reference numeral 11 designates a flat exhaust valve body having a rectangular shape as a whole, and a spool 12 movable in the left and right direction is accommodated in this exhaust valve body 11.
8 and spring holder 14 are closed.

そして、スプール１２はスプリングホルダー１４に内装
されたコイルスゲリング１６によｐ図中左方向に付勢さ
れている。The spool 12 is biased toward the left in FIG.

また、排気弁本体１１には一対の排気ポートＲ，。Further, the exhaust valve main body 11 has a pair of exhaust ports R,.

−と、同じく一対の入力ポートとしての負＃接続ポート
ムＩＩ　ｅ　Ｂｆｉのほか、スプール１２とスプールカ
バー１８とで画成された室Ｒ，に連通するパイロットポ
ー）Ｐが形成されている。そして、第４図からも明らか
なように排気ポー）Ｒ，、Ｒ，Ｆ１大気に開放されると
ともに、負荷Ｉｉ！続ボートＡ□、Ｂ１．は負荷である
ところのエアシリンダー１と第２の電磁弁すの出カポ−
）　Ａ、　、　Ｂ、と會結ぶ主管ｗ８７　ａ　。In addition to the negative # connection port II e Bfi, which also serves as a pair of input ports, a pilot port (P) communicating with the chamber R defined by the spool 12 and the spool cover 18 is formed. As is clear from Fig. 4, the exhaust ports) R, , R, F1 are opened to the atmosphere, and the load Ii! Continuation boat A□, B1. is the load of the air cylinder 1 and the output of the second solenoid valve.
) A, , B, and the main conduit w87 a.

Ｔ′ｂＶＣ各別に接続され、−万パイロットポートＰは
第２の電磁弁すよシも前段の圧力管路７６に＠続されて
いる。T'bVC are connected to each other, and the -1000 pilot port P is also connected to the pressure line 76 at the previous stage through the second electromagnetic valve.

したがって、室１．内にパイロット圧が導入されないと
きにはスプール１２祉第２図の左方向に移動した位置に
あって、これにより排気ポートＲａと負荷接続ポー）Ａ
□　とが連通されるとともに、他方の排気ポートＲ４も
またスプリングホルダ一孔１４ａｔ介して負荷接続ポー
）　ｍｌ、、に連通されるようになっている。尚、第２
図中の１６はシールガスケツ）、１７はクッションパツ
キンである。Therefore, chamber 1. When no pilot pressure is introduced into the spool 12, the spool 12 is moved to the left in Fig. 2, thereby connecting the exhaust port Ra and the load connection port A).
□, and the other exhaust port R4 is also communicated with the load connection port (ml) through the spring holder hole 14at. Furthermore, the second
In the figure, 16 is a seal gasket) and 17 is a cushion gasket.

次に、以上のように構成された残圧排気弁の作用につい
て親羽する。Next, we will discuss the operation of the residual pressure exhaust valve configured as described above.

先ず、回路の停止状慧においては第４図に示すように第
１・第２の電磁弁４，６がノーマル位置にあり、圧力源
２から送られ九空気圧は空気圧調整エニット８【経て第
１の電磁弁４に達している。First, when the circuit is in a stopped state, the first and second solenoid valves 4 and 6 are in the normal position as shown in FIG. It has reached the solenoid valve 4.

ここで、第１の電磁弁４ｔ−励磁動作させると、その空
気圧は１１ｇ２の電磁弁５に達するが、該電磁弁６がノ
ーマルクローズの位ｔ（中立位置）に保持されて全ての
ボートＡｍ　ｔ　Ｂｌ　＋　ｐ＝　ｅ　Ｒ１１＋　Ｒｌ
ｍが遮断されているため、空気圧はパイロット管ｊｉｉ
！）　７　ｄ　ｌ−経てパイロットポー）Ｐから室Ｒ，
内に入る。このため、七〇　パイロット圧によシスプー
ル１２が第２図に示すように右方向に移動し、その結果
として残圧排気弁ｌＯの全てのボートＲａ　ｗ　”４１
　’１１１　Ｂ□が遮断される。Here, when the first solenoid valve 4t is excited, its air pressure reaches the solenoid valve 5 of 11g2, but the solenoid valve 6 is held at the normally closed position t (neutral position) and all boats Am t Bl + p= e R11+ Rl
Since m is blocked, the air pressure is
! ) 7 d l- via pilot port) P to chamber R,
Go inside. Therefore, due to the pilot pressure, the syspool 12 moves to the right as shown in Figure 2, and as a result, all the boats of the residual pressure exhaust valve lO
'111 B□ is cut off.

次いで、第２の電磁弁すの一万のソレノイド５ａを励磁
すると、該電磁弁δが右オフ−にット位ｔＫオフ七ット
動作するために空気圧は圧力ボートＰ雪から出カポ−）
Ｂａｔ経てエアシリンダー１のヘッドエンド側の室ＲＮ
Ｋ導入され、これによってエアシリンダー１のピストン
ｐット′１１が前進する。Then, when the solenoid 5a of the second solenoid valve is energized, the air pressure is released from the pressure boat P so that the solenoid valve δ moves to the right off position.
Chamber RN on the head end side of air cylinder 1 via Bat
K is introduced, thereby causing the piston put'11 of the air cylinder 1 to move forward.

オた、同様に第２の電磁弁６ｔ−左オフセット位置にオ
フセット動作させれば空気圧がエアシリンダー１のロン
ドエンド側の室ＲＬに導入されゐためにピストンロンド
ｌａが後退し、このような前後進を何回でも繰シ返すこ
とができる。この時、第１（Ｄ［磁弁４がノーマル位置
に切り換わらない限シ社残圧排気弁１００室ＲＰＫは常
にパイロット圧が作用しているために残圧排気弁１０は
何ら変化しない。Similarly, if the second solenoid valve 6t is offset to the left offset position, air pressure is introduced into the chamber RL on the rond end side of the air cylinder 1, so the piston rond la moves back, and this back and forth movement occurs. You can repeat the progression as many times as you like. At this time, as long as the first (D) magnetic valve 4 does not switch to the normal position, the pilot pressure is always acting on the residual pressure exhaust valve 100 chamber RPK, so the residual pressure exhaust valve 10 does not change at all.

一万、作動停止信号型たは非常停止信号がΔカされると
、第２の電磁弁６のソレノイドがいずれも消磁されてノ
ーマル位置（中立位置）Ｋ保持される九め、第２の電磁
弁６とエアシリンダー１と【結んでいる主管路７＆、７
ｂＰ３には空気圧がそのｔｔ閉じ込められるととになる
。10,000, When the operation stop signal type or the emergency stop signal is activated, the solenoids of the second solenoid valve 6 are both demagnetized and maintained at the normal position (neutral position). Valve 6 and air cylinder 1 [Connecting main pipe 7 &, 7
If the air pressure is confined at bP3, then tt will be trapped.

この第２の電磁弁６の消磁と同時に第１の電磁弁４もま
たそのソレノイドが消磁されてノーマル位置に切や換わ
るため、圧力ｇ１２から送られる空気圧蝶ポー）Ｐ、ｔ
−経てボートＡから大気中に排出され、オた圧力管路７
ｏ、パイロット管路７ｄおよびＷＩＲｐ内の空気圧は同
じく第１の電磁弁４のボートＲ１から大気中に排出され
、結果的にはパイロット圧そＯもＯが零となる。Simultaneously with the demagnetization of the second solenoid valve 6, the solenoid of the first solenoid valve 4 is also demagnetized and switched to the normal position, so that the pneumatic butterfly pressure sent from the pressure g12) P, t
- is discharged from boat A into the atmosphere through pressure pipe 7.
Similarly, the air pressure in the pilot pipe 7d and WIRp is discharged into the atmosphere from the boat R1 of the first electromagnetic valve 4, and as a result, the pilot pressure becomes zero.

こうして、パイロット圧が零になると残圧排気弁ｌＯの
スプール１２１−ｉコイルスプリング１ｂの力により第
２図の左方向に移動し、排気ポートＲ８゜−と負荷接続
ボートム１１　ａ　Ｂｔｌがそれぞれに連通す為ことに
なるため、前記のように主管路７ａ、７ｂおよびエアシ
リンダー１内に閉じ込められ九空気は排気ポートＲ，、
Ｒ，から全て排出され、よって回路内の残圧が直ちに零
となゐ。In this way, when the pilot pressure becomes zero, the spool 121-i of the residual pressure exhaust valve lO moves to the left in FIG. Therefore, as mentioned above, the air trapped in the main pipes 7a, 7b and the air cylinder 1 is sent to the exhaust ports R, .
The remaining pressure in the circuit immediately drops to zero.

以上の説明から明らかなようにこの発明によれば、電磁
弁がノー！ルク冑−ズ位置に切シ換わった場合には、少
なくとも電磁弁よシも後段の回路内の残圧は直ちに排気
されることになるため、人体に危害１加えたｐ他設備と
の干渉といった不測の事態【招くおそれがなく、安全性
の面できわめて有効なものとなる効果がある。As is clear from the above explanation, according to this invention, there is no solenoid valve! When the switch is switched to the lock position, the residual pressure in the downstream circuit of at least the solenoid valve will be exhausted immediately, resulting in harm to the human body and interference with other equipment. It has the effect of being extremely effective in terms of safety because there is no risk of unforeseen circumstances.

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

第１図は従来の最も一般的な空気圧回路の一ガミ示す回
路図、第２図はこの発明におけゐ残圧排気弁の構成を示
す断面図、第８図は第２図の■−■線矢視図、第４図は
前記残圧排気弁を用いた空気圧回路の一例を示す回路図
である。 １・・・エアシリンダー（負荷）、２・・・圧力源、６
・・・第２の電磁弁、１０・・・残圧排気弁、１１・・
・排気弁本体、１２・・・スプールｓ　”ａ　、Ｒ４・
・・排出ボート、４１　＊　”ｕ・・・負荷接続ボート
（入カポ−）Ｌ　Ｐ・・・パイロットボート、ム１．Ｂ
１・・出力ボート。 第４図Fig. 1 is a circuit diagram showing one of the most common conventional pneumatic circuits, Fig. 2 is a sectional view showing the configuration of the residual pressure exhaust valve in the present invention, and Fig. 8 is a circuit diagram showing the configuration of the residual pressure exhaust valve in the present invention. 4 is a circuit diagram showing an example of a pneumatic circuit using the residual pressure exhaust valve. 1... Air cylinder (load), 2... Pressure source, 6
...Second solenoid valve, 10...Residual pressure exhaust valve, 11...
・Exhaust valve body, 12...Spool s”a, R4・
...Discharge boat, 41 * "u...Load connection boat (input capo) L P...Pilot boat, M1.B
1... Output boat. Figure 4

Claims (1)

【特許請求の範囲】[Claims] （１）負荷に接続される複数の出カポ−）１有するノー
マルクローズドタイプの電磁弁に一体的に取着されると
ともに、排気弁本体は、前記負荷と電磁弁と【結ぶ管路
にそれすれＫｍ続される複数の入力ボートと、大気に開
放される排気ポートと、前記電磁弁よシも前段から導か
れるバイ闘ット圧に応じて移動し前記入力ポートと排気
ポートと【連通・遮断するスプールと會備えてなシ、前
記電磁弁かノーマルク關−ズド位置に移行したときに該
電磁弁よりも後段の空気圧回路内の残圧を排気するよう
に構成したことｔ％黴とする空気圧回路の残圧排気弁。(1) The exhaust valve body is integrally attached to a normally closed type solenoid valve having a plurality of output ports (1) connected to the load, and the exhaust valve body A plurality of input ports connected to each other, an exhaust port opened to the atmosphere, and the solenoid valve also move according to the bypass pressure led from the previous stage to connect and disconnect the input ports and exhaust ports. The spool shall be provided with a spool that is configured to exhaust the residual pressure in the pneumatic circuit downstream of the solenoid valve when the solenoid valve shifts to the normally closed position. Circuit residual pressure exhaust valve.
JP2697482A 1982-02-22 1982-02-22 Exhaust valve of residual pressure in pneumatic pressure circuit Pending JPS58146705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2697482A JPS58146705A (en) 1982-02-22 1982-02-22 Exhaust valve of residual pressure in pneumatic pressure circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2697482A JPS58146705A (en) 1982-02-22 1982-02-22 Exhaust valve of residual pressure in pneumatic pressure circuit

Publications (1)

Publication Number Publication Date
JPS58146705A true JPS58146705A (en) 1983-09-01

Family

ID=12208126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2697482A Pending JPS58146705A (en) 1982-02-22 1982-02-22 Exhaust valve of residual pressure in pneumatic pressure circuit

Country Status (1)

Country Link
JP (1) JPS58146705A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1860328A1 (en) 2006-05-27 2007-11-28 Asco Joucomatic GmbH Control device for a double-acting pneumatic actuator
CN102261513A (en) * 2011-07-11 2011-11-30 长沙理工大学 Inlet/exhaust valve for sewage containing lots of impurities and gases
CN102679026A (en) * 2011-03-18 2012-09-19 哈尔滨盛迪电力设备有限公司 Double-layer floating ball type vacuum breaking valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1860328A1 (en) 2006-05-27 2007-11-28 Asco Joucomatic GmbH Control device for a double-acting pneumatic actuator
CN102679026A (en) * 2011-03-18 2012-09-19 哈尔滨盛迪电力设备有限公司 Double-layer floating ball type vacuum breaking valve
CN102261513A (en) * 2011-07-11 2011-11-30 长沙理工大学 Inlet/exhaust valve for sewage containing lots of impurities and gases

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