JPS58210824A - Compressed air drying system - Google Patents
Compressed air drying systemInfo
- Publication number
- JPS58210824A JPS58210824A JP57095065A JP9506582A JPS58210824A JP S58210824 A JPS58210824 A JP S58210824A JP 57095065 A JP57095065 A JP 57095065A JP 9506582 A JP9506582 A JP 9506582A JP S58210824 A JPS58210824 A JP S58210824A
- Authority
- JP
- Japan
- Prior art keywords
- main tank
- air
- pressure
- compressed air
- desiccant
- 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.)
- Granted
Links
Landscapes
- Compressor (AREA)
- Drying Of Gases (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、空気圧縮機から吐出される圧縮空気を乾燥す
る空気乾燥器を備えた圧縮空気乾燥ンステふに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compressed air drying step equipped with an air dryer for drying compressed air discharged from an air compressor.
圧縮空気中に水分が含まれていると、寒冷地等で圧縮空
気作動装置を使用する際、その水分か装置の弁又は作動
器内で凍結し、装置が作動不良になるばかりでなく、そ
れらを損傷する危険性がある。そのため、空気圧縮機と
主タンクの間に空気乾燥器を介在し、空気圧縮機から吐
出される圧縮空気を空気乾燥器により乾燥させた後主タ
ンクに蓄えるようにしたシステムが提案されている。If compressed air contains moisture, when using a compressed air operating device in a cold region, the moisture will freeze inside the device's valve or actuator, not only causing the device to malfunction, but also causing damage to the device. There is a risk of damaging the Therefore, a system has been proposed in which an air dryer is interposed between the air compressor and the main tank, and the compressed air discharged from the air compressor is dried by the air dryer and then stored in the main tank.
ところで、空気乾燥器による圧縮空気の乾燥は圧縮空気
を乾燥剤の層を通過させて除湿するようにしているので
あるが、長年使用していると、圧縮空気に混って空気圧
縮機吐出口から吐出される油分或はその炭化物によって
乾燥剤の層が目詰りを生じ、そのため、空気乾燥器内の
流路が次第に減縮し主タンクに十分な圧縮空気を供給す
ることができなくなるという問題を生じる。By the way, when drying compressed air using an air dryer, the compressed air is dehumidified by passing through a layer of desiccant, but after many years of use, the compressed air mixes with the compressed air and flows through the air compressor outlet. The desiccant layer is clogged by the oil or its charcoal discharged from the air dryer, and as a result, the flow path in the air dryer gradually shrinks, making it impossible to supply sufficient compressed air to the main tank. arise.
また、空気圧縮機の負荷、無負荷運転の切換えは通常主
タンクの空気圧を検出して行っているのであるが、乾燥
剤の目詰りにより主タンクへの流路が減縮し、空気乾燥
器の入口と主タンクとの間に圧力差が生じると、空気圧
縮機の吐出圧力が高くなり過ぎ、空気圧縮機の寿命を縮
め、或は、破損させるという問題を生じる。In addition, switching between load and no-load operation of the air compressor is normally done by detecting the air pressure in the main tank, but due to clogging of the desiccant, the flow path to the main tank is reduced, causing the air dryer to close. When a pressure difference occurs between the inlet and the main tank, the discharge pressure of the air compressor becomes too high, resulting in problems such as shortening the life of the air compressor or causing damage.
本発明は、上述の問題に鑑みてなされたものであって、
空気乾燥器の乾燥剤が目詰りする等してその流路が減縮
した際にも空気圧縮機から主タンクへ十分な圧縮空気を
供給することができる圧縮空気乾燥システムを提供する
ことを目的とし、その特徴とするところは、空気乾燥器
の入口側と主タンクとの間に、主タンクの圧力が乾燥画
人口側の圧力より所定値以上低下すると連通して空気圧
縮機の吐出圧縮空気を直接主タンクに供給するバイパス
弁を設けたことにある。The present invention has been made in view of the above problems, and includes:
The purpose of the present invention is to provide a compressed air drying system that can supply sufficient compressed air from an air compressor to a main tank even when the flow path is reduced due to clogging of desiccant in an air dryer. The feature is that there is communication between the inlet side of the air dryer and the main tank, and when the pressure in the main tank decreases by more than a predetermined value than the pressure on the drying side, the compressed air discharged from the air compressor is released. The reason is that a bypass valve has been installed to supply water directly to the main tank.
すなわら、空気乾燥器の乾燥剤が目詰り等を生じてその
流路が圧縮し、主タングの圧力が空気乾燥４入口側の圧
力より所定値以上低くなると、バ・イバス弁を連通して
空気圧縮機の吐出圧縮空気を直接主タンクに供給し、そ
れによって、主タンクに十分な空気を供給すると共に空
気圧縮機の吐出圧力のＥり過ぎを防止するようにしたこ
とにある以下、本発明の実施例について図面に従って詳
述する。In other words, when the desiccant in the air dryer becomes clogged and the flow path is compressed, and the pressure in the main tongue becomes lower than the pressure at the air dryer 4 inlet side by a predetermined value or more, the bypass valve is opened. The compressed air discharged from the air compressor is supplied directly to the main tank, thereby supplying sufficient air to the main tank and preventing the discharge pressure of the air compressor from becoming too high. Embodiments of the present invention will be described in detail with reference to the drawings.
図において、１は空気圧縮機であって、その吐出口２は
配管３を介して後述する空気乾燥器４の人力口５に接続
し、空気乾燥器４の出力口６は配管７、再生タンク８、
逆止弁９、配管１０を介して主タンク１１に接続してい
る。In the figure, 1 is an air compressor, its discharge port 2 is connected to a manual port 5 of an air dryer 4, which will be described later, through a pipe 3, and an output port 6 of the air dryer 4 is connected to a pipe 7, a regeneration tank. 8,
It is connected to a main tank 11 via a check valve 9 and piping 10.
配管１２を介して主タンク１１に接続するガバナ１３は
、従来公知の構造のものであって、主タンク１１の圧力
が調整上限値に達すると、作動して制御口１４に圧力信
号を発生し、主タンク１１の圧力が調整下限値まで低下
すると非作動位置に戻り制御口１４の圧力信号は消滅す
る。ガバナ１３の制御口１４は、配管１５．１６を介し
て空気乾燥器４の排出弁１７の制御口１日に接続すると
ともに、配管１５．１９を介して空気圧縮機１のアンロ
ード弁２０に接続している。アンロード弁２０は従来公
知の構造であって、ガバナ１３から圧力信号が伝達され
ると作動して、空気圧縮機１の吸入弁を開放し空気圧縮
機１を無負荷運転状態とし、前記圧力信号が消滅すると
非作動位置に戻り、空気圧縮機１を９荷運転状態にもど
す。The governor 13 connected to the main tank 11 via the piping 12 is of a conventionally known structure, and operates to generate a pressure signal at the control port 14 when the pressure in the main tank 11 reaches the upper limit adjustment value. When the pressure in the main tank 11 drops to the lower adjustment limit, it returns to the non-operating position and the pressure signal at the control port 14 disappears. The control port 14 of the governor 13 is connected to the control port 1 of the discharge valve 17 of the air dryer 4 via a line 15.16 and to the unload valve 20 of the air compressor 1 via a line 15.19. Connected. The unload valve 20 has a conventionally known structure, and is activated when a pressure signal is transmitted from the governor 13 to open the suction valve of the air compressor 1 to bring the air compressor 1 into a no-load operating state, thereby reducing the pressure When the signal disappears, it returns to the non-operating position and returns the air compressor 1 to the 9-load operating state.
空気乾燥器４は、ボルト２１によって一体的に結合され
た上本体２２と下本体２３とを備え、上本体２２の内部
に設けた凹所内には、下本体２３にボルト２４で固定さ
れた乾燥筒２５が、上部外周を０リング２６によりシー
ルして配置されており、その乾燥筒２５の内部に乾燥剤
２７が収納され、上側に出口室２８を区画している。そ
して、出口室２８と出力室６との間は、逆止弁を構成す
る球弁２９およびこの球弁２９に並列に設けた絞り通路
３０により連通している。なお、３１は多数の小孔を有
する乾燥剤押え板である。The air dryer 4 includes an upper main body 22 and a lower main body 23 that are integrally connected by bolts 21, and a recess provided inside the upper main body 22 has an air dryer fixed to the lower main body 23 with bolts 24. A cylinder 25 is disposed with its upper outer periphery sealed by an O-ring 26, a desiccant 27 is stored inside the drying cylinder 25, and an outlet chamber 28 is defined on the upper side. The outlet chamber 28 and the output chamber 6 are communicated through a ball valve 29 constituting a check valve and a throttle passage 30 provided in parallel with the ball valve 29. Note that 31 is a desiccant holding plate having a large number of small holes.
乾燥筒２５の下側に区画され、上本体２２の凹所内壁と
乾燥筒２５外壁との間に形成された通路３２を介して入
力口５に連通ずる入口室３４内には、２個の支持板３５
および３６により支持されたフィルタ３７が配置され、
入力室３４から通孔３８を通って乾燥筒２５内に流れる
空気を濾過する。An inlet chamber 34 that is defined below the drying tube 25 and communicates with the input port 5 via a passage 32 formed between the inner wall of the recess of the upper body 22 and the outer wall of the drying tube 25 includes two chambers. Support plate 35
A filter 37 supported by and 36 is disposed,
Air flowing from the input chamber 34 through the through hole 38 into the drying cylinder 25 is filtered.
通孔３９を介して下本体２３に設けた孔４０内には左端
に弁部材４１を有するピストン４２がばね４３により右
方に押圧されて摺動自在に配置されており、右側に制御
口１８に連通ずる制御室４４を区画している。４５は弁
座であって、ピストン４２が左方に移動し、弁部材４１
が弁座４５から離座すると入口室３４を通孔３９、孔４
０、排気口４７を通して大気に連通ずる。なお、ピスト
ン４２、弁部材４１、弁座４５等により排出弁１７を構
成している。A piston 42 having a valve member 41 on the left end is slidably disposed in a hole 40 provided in the lower body 23 through a through hole 39 and is pressed to the right by a spring 43, and a control port 18 is provided on the right side. A control room 44 is defined which communicates with the. 45 is a valve seat, and the piston 42 moves to the left, and the valve member 41
When the valve is removed from the valve seat 45, the inlet chamber 34 passes through the hole 39 and the hole 4.
0, communicates with the atmosphere through the exhaust port 47. Note that the piston 42, the valve member 41, the valve seat 45, etc. constitute the discharge valve 17.
次に、本発明の主要部をなす警報スイッチ付バイパス弁
について説明スル。Next, the bypass valve with alarm switch, which is the main part of the present invention, will be explained.
全体が５０で示されるる警報スイッチ付バイパス弁は、
内部に段付孔５１を穿説した本体５２、および、接続口
５３を有し、ボルト５４により本体５２の左端に螺着さ
れた蓋部材５５を有しており、段付孔５１内には、小径
部５６、傾斜部５７、大径部５８を有するピストン５９
がばね６０により左方に付勢されて移動可能に配置され
ている、６１はＯＩＪソングあってピストン５９が左方
位置にあるとき、接続口５３に連通ずる室と接続口６２
に連通する室とを気密に区分し、ピストン５９がばね６
０に抗して右方に移動すると、その大径部５８の外周面
とのシール係合が外れ、接続口５３と６啄とを連通ずる
。The bypass valve with alarm switch, which is designated as 50 in its entirety, is
It has a main body 52 with a stepped hole 51 bored therein, a connecting port 53, and a lid member 55 screwed onto the left end of the main body 52 with a bolt 54. , a piston 59 having a small diameter portion 56, an inclined portion 57, and a large diameter portion 58.
is biased to the left by a spring 60 so as to be movable; 61 is an OIJ song; when the piston 59 is in the left position, a chamber communicates with the connection port 53 and a connection port 62;
The piston 59 is airtightly separated from the chamber communicating with the spring 6.
0, the sealing engagement with the outer circumferential surface of the large diameter portion 58 is released, and the connection port 53 and the six holes are communicated with each other.
本体５２に螺着されたスイッチ６３は、ビス（・ン５９
の表面↓こ対峙した操作口・・ドロ４を有し、−ピスト
ン５９が図の左方位置にあり操作ロッド６４の先端が小
径部５６に対応しているときには、スイッチ６３は開の
状態にあり、ピストン５９が右方に移動し操作ロッド６
４がピストン５９の傾斜部５７により押し上げられると
スイッチ６３は閉じ位置となる。The switch 63 screwed onto the main body 52 is attached with a screw (59).
The surface of the operation port ↓ is opposite to the one shown in FIG. Yes, the piston 59 moves to the right and the operating rod 6
4 is pushed up by the inclined portion 57 of the piston 59, the switch 63 is in the closed position.
スイッチ６３の端子６５は運転席等に設けた警報燈６６
を介してバッテリ６７に結線されており、また、接続口
５３は配管６８を介して、通路３２により入力口５に連
通ずる接続口６９に接続し接続口６２は配管７０を介し
て主タンク１１に接続している。The terminal 65 of the switch 63 is connected to a warning light 66 installed in the driver's seat, etc.
The connection port 53 is connected via a pipe 68 to a connection port 69 which communicates with the input port 5 via a passage 32, and the connection port 62 is connected to the main tank 11 via a pipe 70. is connected to.
以上のように構成される本実施例の作用等について説明
する。The operation, etc. of this embodiment configured as above will be explained.
今、主タンク１１の圧力がガノマナ１３の調整上限値に
達しておらず、ガバナ１３が非作動状態にあって制御口
１４に圧力信号が発生していない場合には、空気乾燥器
４の排出弁１７は、そのピストン４２がばね４３に押さ
れて図示の位置にあり、弁部材４１が弁座４５に着座し
て入口室３４は排出口４７から遮断されており、また、
空気圧縮機１のアンローダ弁２０は非作動位置にある。Now, if the pressure in the main tank 11 has not reached the upper limit adjustment value of the governor 13 and the governor 13 is in an inactive state and no pressure signal is generated at the control port 14, the air dryer 4 is discharged. The valve 17 is in the illustrated position with its piston 42 being pushed by the spring 43, the valve member 41 is seated on the valve seat 45, and the inlet chamber 34 is blocked off from the outlet 47.
The unloader valve 20 of the air compressor 1 is in the inoperative position.
そのため、空気圧縮機１の吐出口から吐出された圧縮空
気は、配管３、入力口５、通路３２、人口室３４、フィ
ルタ３７、通孔３８、乾燥筒２５内の乾燥剤２７を通っ
て出口室２８に供給される。そして、圧縮空気が乾燥剤
の層２７を通過する過程で、圧縮空気に含まれる水分お
よび湿気が乾燥剤２７により吸収されるため、出口室２
８に到達した圧縮空気は乾燥状態にある。この出口室２
８の乾燥空気は、球弁２９および絞り通路３０、出力口
６、配管７を通って再生タンク８に送られ、更に逆止弁
９、配管１０を通って主タンク１１に供給される。Therefore, the compressed air discharged from the discharge port of the air compressor 1 passes through the pipe 3, the input port 5, the passage 32, the population chamber 34, the filter 37, the through hole 38, and the desiccant 27 in the drying cylinder 25 before exiting. is supplied to chamber 28. In the process of the compressed air passing through the desiccant layer 27, water and moisture contained in the compressed air are absorbed by the desiccant 27, so the exit chamber 2
The compressed air that has reached 8 is in a dry state. This exit chamber 2
8 is sent to the regeneration tank 8 through the ball valve 29, the throttle passage 30, the output port 6, and the piping 7, and is further supplied to the main tank 11 through the check valve 9 and the piping 10.
この際、空気乾燥器４の乾燥剤２７、フィルタ３７が新
しく、これらによる減圧作用が小さいときには、入力口
５と主タンク１１との圧力差が小すく、従って警報スイ
ッチ付バイパス弁５０の接続口５３および接続口６２に
伝達される圧力の差゛が小さいため、ピストン５９はば
ね６０により左□方に押され、接続口５３と６２は遮断
されており、湿った圧縮空気が接続口６９、配管６８、
接続口５３、段付孔５１、接続口Ｃ２および配管７０を
通って主タンク１１に供給されることはない。At this time, when the desiccant 27 and filter 37 of the air dryer 4 are new and their pressure reducing effect is small, the pressure difference between the input port 5 and the main tank 11 is small, and therefore the connection port of the bypass valve 50 with alarm switch Since the difference in pressure transmitted to the connection port 53 and the connection port 62 is small, the piston 59 is pushed to the left by the spring 60, the connection ports 53 and 62 are blocked, and moist compressed air flows through the connection port 69, Piping 68,
It is not supplied to the main tank 11 through the connection port 53, stepped hole 51, connection port C2, and piping 70.
主タンク１１に圧縮空気が供給され主タンク１■の圧力
がガバナ１３の調整上限値に達すると、ガバナ１３が作
動し、その制御口１４に圧力信号が発生する。この圧力
信号は、配管１５．１６を通って排出弁Ｉ７の制御口１
８に伝達されるとともに、配管１９を通って空気圧縮機
１を無負荷運転状態に変える。それと同時シニ、排出弁
１７の制御室４４に圧力信号が伝達されると、ピストン
４２は、その圧力によってばね４３にして左方に移動し
、弁部材４１が弁座４５から離座し、入口室３４を通孔
３９排気室４６、排気口４７を通して大気に連通する。When compressed air is supplied to the main tank 11 and the pressure in the main tank 12 reaches the adjustment upper limit value of the governor 13, the governor 13 is activated and a pressure signal is generated at its control port 14. This pressure signal passes through line 15.16 to control port 1 of discharge valve I7.
8 and passes through piping 19 to change the air compressor 1 to a no-load operating state. At the same time, when a pressure signal is transmitted to the control chamber 44 of the discharge valve 17, the piston 42 is moved to the left by the spring 43 due to the pressure, the valve member 41 is separated from the valve seat 45, and the inlet The chamber 34 communicates with the atmosphere through a through hole 39, an exhaust chamber 46, and an exhaust port 47.
そのため、再生タンク８の乾燥した圧縮空気は配管７、
出力口６、絞り通路３０、出口室２８、乾燥剤２７、通
孔３８、フィルタ３７、入口室３４、および排出弁１７
を通って徐々に大気に放出される。この乾燥した圧縮空
気が乾燥剤２７内を逆送する過程において、乾燥剤２７
に吸着した水分および湿気が、乾燥空気により除去され
、乾燥剤２７は再び乾燥能力を回復する。Therefore, the dry compressed air in the regeneration tank 8 is transferred to the pipe 7,
Output port 6, throttle passage 30, outlet chamber 28, desiccant 27, through hole 38, filter 37, inlet chamber 34, and discharge valve 17
gradually released into the atmosphere. In the process of this dry compressed air being sent back through the desiccant 27, the desiccant 27
The moisture and moisture adsorbed on the drying agent 27 are removed by the drying air, and the desiccant 27 regains its drying ability.
その後、主タンクの圧縮空気が消費されることにより、
主タンクＩＩの圧力が低下しその値がガバナ１３の調整
下限値に達すると、ガバナ１３が非作動位置に戻り制御
口１４の圧力信号が消滅する。その結果、排出弁１７が
非作動位置に戻り、人口室３４と大気との連通を遮断す
ると共に、空気圧縮機１が負荷運転状態になり、その吐
出口により圧縮空気を吐出する。この吐出された圧縮空
気は、前述と同様にして空気乾燥器４の乾燥剤２７によ
り乾燥された主タンク１１に供ｄされる。After that, as the compressed air in the main tank is consumed,
When the pressure in the main tank II decreases and its value reaches the lower limit of the adjustment of the governor 13, the governor 13 returns to the non-operating position and the pressure signal at the control port 14 disappears. As a result, the discharge valve 17 returns to the non-operating position, cutting off communication between the population chamber 34 and the atmosphere, and the air compressor 1 enters a loaded operating state, discharging compressed air from its discharge port. This discharged compressed air is supplied to the main tank 11 where it is dried by the desiccant 27 of the air dryer 4 in the same manner as described above.
以後、上述の作動を繰返すことによって、主タンク１１
には、ガバナ１３により所定の圧力範囲に調整された乾
燥圧縮空気が蓄えられる。Thereafter, by repeating the above-mentioned operation, the main tank 11
Dry compressed air adjusted to a predetermined pressure range by a governor 13 is stored in the air conditioner.
ところで、空気乾燥器４の乾燥剤２７およびフィルタ３
７を交換することなく長期間使用していると、空気圧縮
機から吐出される圧縮空気に含まれる油分または、その
炭化物が、フィルタ３７および乾燥剤２７に付着し、フ
ーＣルタ３７および乾燥剤′２７が目詰りを生じてそれ
らの流路面積が減少する。その結果、フィルタ３７およ
び乾燥剤２７による流路抵抗が増大し、空気乾燥器４の
入口室３４と出口室２８との間に圧力差を生じ、主タッ
ク１１への圧縮空気の供給が障害される。By the way, the desiccant 27 of the air dryer 4 and the filter 3
If the air compressor 7 is used for a long period of time without being replaced, oil contained in the compressed air discharged from the air compressor or its carbide will adhere to the filter 37 and the desiccant 27, causing damage to the filter 37 and the desiccant. '27 become clogged and their flow path area decreases. As a result, the flow path resistance due to the filter 37 and the desiccant 27 increases, creating a pressure difference between the inlet chamber 34 and the outlet chamber 28 of the air dryer 4, which impedes the supply of compressed air to the main tack 11. Ru.
そして、フィルタ３７及び乾燥剤２７の目詰りが著しる
しくなり、空気乾燥器４の入口側の圧力が主タンク１１
の圧力により所定値高くなると、乾燥器４の人口側の圧
力は通路２５、接続口６９、配管６８を介して接続口５
３に伝達され、主り、′り１１の圧力は配管７０を介し
て接続口６２に伝達されるので、警報スイッチ付バイパ
ス弁５９がその差圧を受けてばね６０に抗して右方に移
動し、接続口５３を接続口６２に連通ずる。その結果、
空気圧縮機１の吐出口２から吐出された圧縮空気は、フ
ィルタ３７、乾燥剤２７を通ることなく、入力口５、通
路３２、接続口６９、配管６８、接続口６３、段付孔５
１、接続口６２、配管７０を通って主タンク１１に直接
供給される。それと同時に、警報スイッチ付バイパス弁
５０のピストン５９が右方に移動するとスイッチ６３の
操作ロッド６４がピストン５９の傾斜部５７により押し
上げられ、スイッチ６３が作動し、警報燈６６が点燈し
て、運転者等に、バイパス弁５０が作動し、もはや空気
圧縮機１からの圧縮空気は乾燥させることはなく主タン
ク１１に供給されていることを警報する。Then, the filter 37 and the desiccant 27 become significantly clogged, and the pressure on the inlet side of the air dryer 4 drops to the main tank 11.
When the pressure on the artificial side of the dryer 4 increases to a predetermined value due to the pressure of
3, and the pressure in the main and rear 11 is transmitted to the connection port 62 via the piping 70, so the bypass valve 59 with an alarm switch receives the differential pressure and moves to the right against the spring 60. The connecting port 53 is moved to communicate with the connecting port 62. the result,
The compressed air discharged from the outlet 2 of the air compressor 1 passes through the input port 5, the passage 32, the connection port 69, the pipe 68, the connection port 63, and the stepped hole 5 without passing through the filter 37 and the desiccant 27.
1. It is directly supplied to the main tank 11 through the connection port 62 and piping 70. At the same time, when the piston 59 of the bypass valve 50 with alarm switch moves to the right, the operating rod 64 of the switch 63 is pushed up by the inclined part 57 of the piston 59, the switch 63 is activated, and the alarm light 66 lights up. The driver and the like are alerted that the bypass valve 50 is activated and the compressed air from the air compressor 1 is no longer being dried and is being supplied to the main tank 11.
また、主タンク１１の圧力がガバナ１３で設定される調
整限界値に達すると、ガバナ１３が作動して空気圧縮機
１のアンロード弁２０を作動し、空気圧縮機１を無負荷
運転状態にして吐出口２の圧力を無圧にするが、バイパ
ス弁５０の接続口５３の圧力と接続口６２の圧力との差
が所定を下回った時点でピストン５９がばね６０により
左方に押されて両接続口５３．６２を遮断するので、主
タンク１１の圧縮空気がバイパス５０を介して外気に放
出されることはない。Furthermore, when the pressure in the main tank 11 reaches the adjustment limit value set by the governor 13, the governor 13 operates and operates the unload valve 20 of the air compressor 1, putting the air compressor 1 into a no-load operating state. However, when the difference between the pressure at the connection port 53 and the pressure at the connection port 62 of the bypass valve 50 falls below a predetermined value, the piston 59 is pushed to the left by the spring 60. Since both connection ports 53 and 62 are shut off, compressed air in the main tank 11 is not released to the outside air via the bypass 50.
なお、上記バイパス弁５０が作動する所定の値は、通常
、フィルタ３７、乾燥剤２７、配置の抵抗により発生す
る圧力差より少し大きく設定している。Note that the predetermined value at which the bypass valve 50 operates is normally set to be slightly larger than the pressure difference generated by the resistance of the filter 37, desiccant 27, and arrangement.
以上の説明から明らかなように、本発明は、空気乾燥器
の入口側と主タンクとの間に、主タンクの圧力が入口側
の圧力より所定値以上低下すると一連通して空全圧縮機
からの吐出圧力を、乾燥剤を通すことなく直接タンクに
供給するバイパス弁を設けるようにしているので、空気
乾燥器の乾燥剤またはフィルタが目詰りしその流路が著
しく絞られた場合にも、空気圧縮機の吐出圧縮空気を主
タンクに供給することができ、主タンクの圧縮空気が不
足することがなく、また、空気圧縮機の吐出圧力が零ミ
に高くなり、空気圧縮機の耐久性を劣贋覚
下させまたそれを損傷する危険性がない。As is clear from the above description, the present invention provides a system between the inlet side of the air dryer and the main tank, in which when the pressure in the main tank decreases by more than a predetermined value than the pressure at the inlet side, the entire air compressor is A bypass valve is installed to supply the discharge pressure directly to the tank without passing through the desiccant, so even if the desiccant or filter in the air dryer becomes clogged and its flow path is significantly constricted, The compressed air discharged from the air compressor can be supplied to the main tank, so there is no shortage of compressed air in the main tank, and the discharge pressure of the air compressor is raised to zero, increasing the durability of the air compressor. There is no risk of degrading it or damaging it.
なお、本発明は、上述の実施例に限定されるものではな
く、その、技術的思想の範囲内で幾多の変形が可能であ
る。Note that the present invention is not limited to the above-described embodiments, and many modifications can be made within the scope of the technical idea.
例えば、本実施例においては、バイパス′弁を警報スイ
ッチ付バイパス弁として構成しているが、警報スイッチ
を設ける必要は特にない。For example, in this embodiment, the bypass 'valve is configured as a bypass valve with an alarm switch, but there is no particular need to provide an alarm switch.
また、本実施例では、バイパス弁の一方の接続口を空気
乾燥器内の通路を介して空気圧縮機の吐出口に接続する
ようにしているが、上記一方の接続口を空気圧縮機の吐
出口に直接配管接続してもよい。Furthermore, in this embodiment, one connection port of the bypass valve is connected to the discharge port of the air compressor via a passage in the air dryer; A direct piping connection may be made to the outlet.
更に、空気乾燥器も本実施例に限定されるものではなく
、入力口と出力口とを連通する通路に乾燥剤を介設し、
乾燥剤の目詰等により入力口と出との通路が減縮される
形式のものであればよい。Furthermore, the air dryer is not limited to this embodiment, and a desiccant may be interposed in the passage communicating the input port and the output port,
Any type may be used as long as the path between the input port and the output port is reduced due to clogging of the desiccant.
図は、本発明の実施例を示す圧縮空気乾燥システムの配
管接続図である。
１・・・空気圧縮機 ２・・・吐出口 ４・・・空気乾
燥器５・・・人力口 ６・・・出力口 ８・・・再生タ
ンク９・・・逆止弁 １１・・・主タンク １３・・・
ガバナ１７・・・排出弁 ２０・・・アンロード弁２５
・・・乾燥筒 ２７・・・乾燥剤 ２８・・・出口室３
２・・・通路 ３４・・・人口室 ３７・・・フィルタ
４７・−・排気口
５０・・・警報スイッチ付バイパス弁The figure is a piping connection diagram of a compressed air drying system showing an embodiment of the present invention. 1... Air compressor 2... Discharge port 4... Air dryer 5... Power port 6... Output port 8... Regeneration tank 9... Check valve 11... Main Tank 13...
Governor 17...Discharge valve 20...Unload valve 25
... Drying cylinder 27 ... Desiccant 28 ... Outlet chamber 3
2... Passage 34... Population chamber 37... Filter 47... Exhaust port 50... Bypass valve with alarm switch
Claims (1)
間に介在し、空気圧縮機から吐出される圧縮空気を乾燥
する乾燥剤を内蔵した空気乾燥器とを備えた圧縮空気乾
燥システムにおいて、前記空気乾燥器入口側の圧力と前
記主タンクの圧力とを比較し、主タンクの圧力が人口側
と前記主タンクとの間に、主タンクの圧力が前記人口側
の圧力より所定値以−ヒ低下すると連通して前記空気圧
縮機の吐出圧縮空気を直接主タンクに供給するバイパス
弁を設けてなる圧縮空気乾燥システム。A compressed air drying system comprising an air compressor, a main tank, and an air dryer interposed between the air compressor and the main tank and containing a desiccant for drying the compressed air discharged from the air compressor. , the pressure on the inlet side of the air dryer and the pressure in the main tank are compared, and the pressure in the main tank is between the population side and the main tank, and the pressure in the main tank is a predetermined value lower than the pressure on the population side. A compressed air drying system comprising a bypass valve that communicates when the air temperature drops to supply the compressed air discharged from the air compressor directly to the main tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57095065A JPS58210824A (en) | 1982-06-03 | 1982-06-03 | Compressed air drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57095065A JPS58210824A (en) | 1982-06-03 | 1982-06-03 | Compressed air drying system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58210824A true JPS58210824A (en) | 1983-12-08 |
| JPH0379051B2 JPH0379051B2 (en) | 1991-12-17 |
Family
ID=14127602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57095065A Granted JPS58210824A (en) | 1982-06-03 | 1982-06-03 | Compressed air drying system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58210824A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06226233A (en) * | 1993-01-29 | 1994-08-16 | Nichias Corp | Method and equipment for reducing volume of chlorine-containing plastic waste |
| WO2021029880A1 (en) * | 2019-08-14 | 2021-02-18 | New York Air Brake, LLC | Air dryer with prefiltration stage bypass |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4946269A (en) * | 1972-08-10 | 1974-05-02 |
-
1982
- 1982-06-03 JP JP57095065A patent/JPS58210824A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4946269A (en) * | 1972-08-10 | 1974-05-02 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06226233A (en) * | 1993-01-29 | 1994-08-16 | Nichias Corp | Method and equipment for reducing volume of chlorine-containing plastic waste |
| WO2021029880A1 (en) * | 2019-08-14 | 2021-02-18 | New York Air Brake, LLC | Air dryer with prefiltration stage bypass |
| US11517851B2 (en) | 2019-08-14 | 2022-12-06 | New York Air Brake, LLC | Air dryer with prefiltration stage bypass |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0379051B2 (en) | 1991-12-17 |
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