JPH05306788A - Noise reduction valve and hydraulic device - Google Patents
Noise reduction valve and hydraulic deviceInfo
- Publication number
- JPH05306788A JPH05306788A JP4113619A JP11361992A JPH05306788A JP H05306788 A JPH05306788 A JP H05306788A JP 4113619 A JP4113619 A JP 4113619A JP 11361992 A JP11361992 A JP 11361992A JP H05306788 A JPH05306788 A JP H05306788A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- noise reduction
- reduction valve
- flow
- port
- 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.)
- Withdrawn
Links
Landscapes
- Pipe Accessories (AREA)
- Details Of Valves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は油圧管路などの加圧流体
管路内に挿入して管路内を流れる加圧流体による騒音を
低減するために用いられる騒音低減装置およびこれを採
用した油圧装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention employs a noise reducing device which is inserted into a pressurized fluid line such as a hydraulic line to reduce noise caused by a pressurized fluid flowing in the line and a noise reduction device for the same. Regarding hydraulic system.
【０００２】[0002]
【従来の技術】加圧流体を扱う装置、例えば油圧駆動装
置では、油圧力を発生するための油圧ポンプが不可欠
で、この吐出圧力を高圧にするほど大きい騒音が発生し
ている。2. Description of the Related Art In a device that handles a pressurized fluid, for example, a hydraulic drive device, a hydraulic pump for generating hydraulic pressure is indispensable, and the higher the discharge pressure, the more noise is generated.
【０００３】油圧制御装置で発生する騒音にはつぎのよ
うなものがある。 油圧ポンプで発生する吐出圧力脈動に起因する騒
音、 油圧管路内を通過する流体が発生する騒音、 各種制御弁で生ずる噴流、縮流、拡散、キャビテー
ションに起因する騒音、 これらは周囲の環境公害、作業者の疲労、機器の損傷、
寿命低下をまねく要因となる。The noise generated by the hydraulic control device is as follows. Noise caused by discharge pressure pulsation generated by hydraulic pump, noise generated by fluid passing through hydraulic pipe, noise generated by various control valves such as jet flow, contraction, diffusion, and cavitation. , Worker fatigue, equipment damage,
It becomes a factor leading to shortened life.
【０００４】[0004]
【発明が解決しようとする課題】このような騒音発生が
不都合な場合には、油圧ポンプの構造を変更したり、脈
動を低減するために吐出管路にアキュムレータや油圧マ
フラを挿入して対処して来た。When such noise generation is inconvenient, it is necessary to change the structure of the hydraulic pump or insert an accumulator or hydraulic muffler into the discharge line to reduce pulsation. Came.
【０００５】しかしながら、構造簡単で取付けスペース
が小さくて所望の騒音低減効果を達成しうるものは未だ
提案されていない。However, a structure which has a simple structure and a small mounting space and can achieve a desired noise reduction effect has not been proposed yet.
【０００６】本発明は、加圧流体管路内に挿入すること
ができ、しかも構造簡単でありながら十分な騒音低減効
果のある騒音低減弁を提供することを課題としている。An object of the present invention is to provide a noise reduction valve which can be inserted into a pressurized fluid line and has a simple structure and a sufficient noise reduction effect.
【０００７】[0007]
【課題を解決するための手段】本発明では、加圧流体の
流入口と流出口およびこの流入口と流出口を連通する流
体通路を具えた弁本体の中に、前面をこの流入口に対向
して摺動自在に円板弁を配設し、同円板弁を弁本体の流
入口に向けてバネで押圧すると共に同円板弁の後面側に
は絞りを介して前記流出口と連通された背圧室を形成し
た騒音低減弁を加圧流体管路に介在させることによって
騒音発生を抑えるものである。SUMMARY OF THE INVENTION In the present invention, the front face is opposed to the inlet in a valve body having an inlet and an outlet for the pressurized fluid and a fluid passage communicating the inlet and the outlet. And a disc valve is slidably mounted, the disc valve is pressed toward the inlet of the valve body by a spring, and the rear side of the disc valve communicates with the outlet through a throttle. By interposing a noise reduction valve having a back pressure chamber formed therein in the pressurized fluid pipe, noise generation is suppressed.
【０００８】[0008]
【作用】 管路内を高速で流れる流体は、脈動や乱流に伴なう
圧力変動を生じ、これが外部へ伝播して騒音源となって
いる。本発明では、これを低減するために、この流れを
前記した騒音低減弁における円板弁に当てて弁本体の流
入口と円板弁の間に形成される小さい隙間で緩和すると
ともに、放射状に拡散させることにより、静粛な流れに
変える。The fluid flowing at high speed in the pipe line causes pressure fluctuations associated with pulsation and turbulence, which propagate to the outside and become a noise source. In the present invention, in order to reduce this, the flow is applied to the disc valve in the noise reduction valve described above to be mitigated in the small gap formed between the inlet of the valve body and the disc valve, and to be radial. By diffusing, it turns into a quiet flow.
【０００９】 高圧流体を所望のアクチュエータ（シ
リンダ、モータ等）に分配するための各種制御弁では、
通過流量を制御するためにポートの開口面積を調節して
いるが、この開度が小さい時には、ポートの出入口で高
差圧となり、噴流やキャビテーションを起こして、これ
が騒音を発生する。In various control valves for distributing high-pressure fluid to desired actuators (cylinder, motor, etc.),
The opening area of the port is adjusted to control the flow rate, but when this opening is small, a high differential pressure is created at the inlet and outlet of the port, causing jet flow and cavitation, which causes noise.
【００１０】本発明では、前記したように弁本体の流入
口と円板弁の円板面とで形成される微小間隙を、上下流
の圧力差とバネにより制御することによって高差圧を形
成させず、必要な流量を保持する。In the present invention, a high differential pressure is formed by controlling the minute gap formed between the inlet of the valve body and the disc surface of the disc valve by the pressure difference between the upstream and downstream sides and the spring as described above. Do not allow it to maintain the required flow rate.
【００１１】 油圧ポンプの脈動が円板弁の上流側に
作用したとき、前記したようにバネで押圧された円板弁
が共動変位して脈動を吸収するように作用させる。When the pulsation of the hydraulic pump acts on the upstream side of the disc valve, the disc valve, which is pressed by the spring as described above, is co-displaced so as to absorb the pulsation.
【００１２】 実際の油圧制御回路において、本発明
による騒音低減弁を、油圧ポンプと油圧制御弁の間に挿
入した使い方では、上流の油圧ポンプ脈動の吸収、配管
内の乱流に伴なう流体音の消去に役立つと共に、下流の
油圧制御弁のポート部に発生する高い圧力差は本発明に
よる騒音低減弁の円板面で圧力損失を発生させて緩和さ
れる。In an actual hydraulic control circuit, when the noise reduction valve according to the present invention is inserted between the hydraulic pump and the hydraulic control valve, the fluid accompanying the upstream hydraulic pump pulsation and the turbulent flow in the pipe are absorbed. The high pressure difference generated in the port portion of the downstream hydraulic control valve is alleviated by generating a pressure loss on the disk surface of the noise reduction valve according to the present invention while helping to eliminate the sound.
【００１３】 同じく、騒音低減弁を油圧制御弁と油
圧タンクの間に挿入した使い方では、騒音低減弁の円板
面が上流の油圧制御弁の戻り管路に圧力損失を発生さ
せ、若干の背圧を立てて、油圧制御弁内で生ずる乱流や
噴流によるキャビテーションを抑制するように作用す
る。Similarly, when the noise reduction valve is inserted between the hydraulic control valve and the hydraulic tank, the disc surface of the noise reduction valve causes a pressure loss in the return line of the upstream hydraulic control valve and causes a slight backlash. By raising the pressure, it acts to suppress cavitation due to turbulent flow or jet flow generated in the hydraulic control valve.
【００１４】[0014]
【実施例】以下、本発明を図示した実施例に基いて具体
的に説明する。図１から図４において、騒音低減弁１０
は、本体１内に軸方向に摺動可能に円板弁２を配設し、
円板弁２の前面は流入口１１に対向し後面は流出口１２
に絞り６を介して接続されている。The present invention will be described in detail below with reference to the illustrated embodiments. 1 to 4, the noise reduction valve 10
Arranges the disc valve 2 in the main body 1 so as to be slidable in the axial direction,
The front surface of the disc valve 2 faces the inflow port 11, and the rear surface thereof is the outflow port 12.
Is connected via a diaphragm 6.
【００１５】円板弁１の後面に形成された本体１の背圧
室７には円板弁２を閉じる方向に作用するバネ４が設け
られている。３は蓋で，背圧室７の形成とバネ４のバネ
受けを兼ねている。The back pressure chamber 7 of the main body 1 formed on the rear surface of the disc valve 1 is provided with a spring 4 acting in the direction of closing the disc valve 2. Reference numeral 3 is a lid that serves both as a back pressure chamber 7 and as a spring receiver for the spring 4.
【００１６】騒音低減弁１０は油圧装置の配管系に挿入
され、油路は次の如く構成される。流入口１１から流入
した油は、円板弁２の円板面２′と本体１の内壁面で形
成される間隙を通過し、環状通路１３、縦通路１３′及
び横通路１４を経て流出口１２へ至りここから下流へ流
れるようになっている。The noise reduction valve 10 is inserted into the piping system of the hydraulic system, and the oil passage is constructed as follows. The oil that has flowed in from the inflow port 11 passes through the gap formed by the disc surface 2 ′ of the disc valve 2 and the inner wall surface of the main body 1, passes through the annular passage 13, the vertical passage 13 ′, and the horizontal passage 14, and then flows out. It reaches 12 and flows downstream from here.
【００１７】図２は、円板弁２、環状通路１３、縦通路
１３′、背圧室７の関係を示している。図３は、蓋３に
設けた油通路を示し、８は通路を加工したあとの栓を示
す。図４は、円板弁２の円板面２′に設けた整流板５を
示す。図５は、他の実施例による騒音低減弁１０の縦断
面図を示しており図１に示すものと異なるところは、背
圧室７に通ずる小孔１５を経た流路に蓄圧器２０を設け
たことである。FIG. 2 shows the relationship among the disc valve 2, the annular passage 13, the vertical passage 13 ', and the back pressure chamber 7. FIG. 3 shows an oil passage provided in the lid 3, and 8 shows a plug after processing the passage. FIG. 4 shows the flow regulating plate 5 provided on the disc surface 2 ′ of the disc valve 2. FIG. 5 shows a vertical cross-sectional view of a noise reduction valve 10 according to another embodiment, and is different from that shown in FIG. 1 in that a pressure accumulator 20 is provided in a flow path passing through a small hole 15 communicating with the back pressure chamber 7. That is.
【００１８】蓄圧器２０は、油室１８、隔膜１９、気体
室１７および気体の充填口１６で構成されている。The pressure accumulator 20 comprises an oil chamber 18, a diaphragm 19, a gas chamber 17 and a gas filling port 16.
【００１９】図６及び図７は、油圧駆動装置の油圧回路
に本発明による騒音低減弁を適用した場合の実施例を示
す。6 and 7 show an embodiment in which the noise reduction valve according to the present invention is applied to the hydraulic circuit of the hydraulic drive system.
【００２０】図６では油圧ポンプ３０の吐出管路３４と
サーボ弁３２の上流管路３５の間に騒音低減弁１０を配
設している。３１はリリーフ弁、３３はシリンダ、３
４，３５，３６，３７，３８はそれぞれ油圧管路を示
す。In FIG. 6, the noise reduction valve 10 is arranged between the discharge line 34 of the hydraulic pump 30 and the upstream line 35 of the servo valve 32. 31 is a relief valve, 33 is a cylinder, 3
Reference numerals 4, 35, 36, 37 and 38 denote hydraulic lines.
【００２１】油圧ポンプ３０の吐出圧力は、サーボ弁３
２が作動していない場合には、リリーフ弁３１の設定圧
力に調節されており、この状態では、騒音低減弁１０に
油は流れていないが、油圧ポンプ３０の吐出脈動に追従
して、円板弁２が軸方向にわずかに移動して、脈動を減
少するように作用する。The discharge pressure of the hydraulic pump 30 is the servo valve 3
When 2 is not operating, the pressure is adjusted to the set pressure of the relief valve 31. In this state, oil does not flow through the noise reduction valve 10, but the discharge pulsation of the hydraulic pump 30 is followed, and The plate valve 2 moves slightly in the axial direction and acts to reduce pulsation.
【００２２】サーボ弁３２がわずかに開くと油圧ポンプ
３０の最高圧力が管路３５から管路３８へ流れ、サーボ
弁３２の流路制御ポートは最高差圧下にさらされるの
で、ポート部での油の流速が過大となり噴流音やキャビ
テーション音を発生するが、騒音低減弁１０で圧力損失
を発生するように設定しておけば、サーボ弁３２部での
騒音が低減できる。When the servo valve 32 is slightly opened, the maximum pressure of the hydraulic pump 30 flows from the pipe line 35 to the pipe line 38, and the flow path control port of the servo valve 32 is exposed to the maximum differential pressure. However, if the noise reduction valve 10 is set to generate pressure loss, noise at the servo valve 32 can be reduced.
【００２３】またサーボ弁３２の開度が大の場合には管
路３５の圧力は低下気味となり、管路３８の圧力は上昇
し、ポート部での圧力差が小となって騒音は発生しない
が、管路３４からの流量が大となって、管路内で乱流を
生じ騒音が発生するので、図１に示したように、騒音低
減弁２の円板面２′と流入口１１の部分で小さい隙間か
らの放射状流れとすることにより騒音が低減可能であ
る。When the opening degree of the servo valve 32 is large, the pressure in the pipe line 35 tends to decrease, the pressure in the pipe line 38 rises, the pressure difference at the port portion becomes small, and no noise is generated. However, since the flow rate from the pipe 34 becomes large and a turbulent flow is generated in the pipe to generate noise, as shown in FIG. 1, the disc surface 2 ′ of the noise reduction valve 2 and the inlet 11 Noise can be reduced by making a radial flow from a small gap at the portion.
【００２４】図７の実施例では、サーボ弁３２の下流管
路３６とタンク管路３７の間に騒音低減弁１０を配設し
ている。負荷管路３８と下流管路３６に介在しているサ
ーボ弁３２のポート部での圧力差が大きい場合や、下流
管路３６の絶対圧力が低い場合にはサーボ弁３２の戻り
側で、キャビテーションや噴流が発生しこれが騒音源と
なるので、下流管路３６に騒音低減弁１０を挿入して、
若干の背圧を持たせることと、乱流を防止することによ
り騒音を低減することが可能となる。In the embodiment of FIG. 7, the noise reduction valve 10 is arranged between the downstream conduit 36 of the servo valve 32 and the tank conduit 37. If the pressure difference between the ports of the servo valve 32 interposed between the load conduit 38 and the downstream conduit 36 is large, or if the absolute pressure in the downstream conduit 36 is low, cavitation is performed on the return side of the servo valve 32. Since a jet flow is generated and this becomes a noise source, the noise reduction valve 10 is inserted in the downstream pipe line 36,
Noise can be reduced by providing a slight back pressure and preventing turbulence.
【００２５】なお、以上、本発明を油圧管路に適用した
場合について具体的に説明したが、本発明は他の加圧流
体に対する騒音低減弁として適用できることはもとよ
り、図示した具体的構造は本発明の範囲内で種々変更可
能なことはいうまでもない。In the above, the case where the present invention is applied to a hydraulic line has been specifically described. However, the present invention can be applied as a noise reduction valve for other pressurized fluids, and the specific structure shown is It goes without saying that various changes can be made within the scope of the invention.
【００２６】[0026]
【発明の効果】本発明による騒音低減弁では、加圧流体
の流入口に対しバネで押圧され、かつ、絞りを介して流
出口に連結された背圧室に入れられている円板弁の前面
に加圧流体を当てて加圧流体の脈動を吸収して低減する
と共に、円板弁の前面と弁本体の流入口との間に形成さ
れる間隙を通して流れを放射状に分散させて騒音が効果
的に低減される。In the noise reduction valve according to the present invention, the disc valve which is pressed by the spring against the inlet of the pressurized fluid and which is placed in the back pressure chamber connected to the outlet through the throttle is provided. The pressurized fluid is applied to the front surface to absorb and reduce the pulsation of the pressurized fluid, and the flow is radially dispersed through the gap formed between the front surface of the disc valve and the inlet of the valve body to reduce noise. Effectively reduced.
【００２７】また、本発明による騒音低減弁は、流入口
と流出口をもつ本体内にバネで押圧した円板弁を入れた
だけの簡単な構造なので、加圧流体の騒音を安価に低減
できる。Further, the noise reduction valve according to the present invention has a simple structure in which a disk valve pressed by a spring is put in a main body having an inflow port and an outflow port, so that the noise of the pressurized fluid can be reduced at a low cost. ..
【図１】本発明の第１実施例に係る騒音低減弁の縦断面
図、FIG. 1 is a vertical cross-sectional view of a noise reduction valve according to a first embodiment of the present invention,
【図２】図１のＡ−Ａ線に沿う断面図、FIG. 2 is a sectional view taken along the line AA of FIG.
【図３】図１のＢ−Ｂに沿う断面図、FIG. 3 is a sectional view taken along line BB of FIG.
【図４】図１に示した騒音低減弁に用いられている円板
弁の正面図、4 is a front view of a disc valve used in the noise reduction valve shown in FIG.
【図５】本発明の第２実施例に係る騒音低減弁の縦断面
図、FIG. 5 is a vertical sectional view of a noise reduction valve according to a second embodiment of the present invention,
【図６】油圧駆動装置の油圧回路に本発明による騒音低
減弁を適用した回路図、FIG. 6 is a circuit diagram in which the noise reduction valve according to the present invention is applied to a hydraulic circuit of a hydraulic drive device,
【図７】本発明による騒音低減弁の他の適用例を示す回
路図。FIG. 7 is a circuit diagram showing another application example of the noise reduction valve according to the present invention.
１ 本体 ２ 円板弁 ３ 蓋 ４ バネ ５ 整流板 ６ 絞り ７ 背圧室 ８ 栓 １０ 騒音低減弁 １１ 流入口 １２ 流出口 １３ 縦通路 １４ 横通路 １５ 小孔 １６ 充填口 １７ 気体室 １８ 油室 １９ 隔膜 ２０ 蓄圧器 1 Main Body 2 Disc Valve 3 Lid 4 Spring 5 Rectifier Plate 6 Throttle 7 Back Pressure Chamber 8 Stopper 10 Noise Reduction Valve 11 Inlet 12 Outlet 13 Vertical Pass 14 Side Pass 15 Small Hole 16 Filling Port 17 Gas Chamber 18 Oil Chamber 19 Diaphragm 20 Accumulator
Claims (4)
口と流出口の間を連通する流体通路を有する弁本体、前
面を前記流入口に対向して同弁本体内に摺動自在に配設
された円板弁、および同円板弁を前記流入口に向けて押
圧するバネを有し、同円板弁の後面側には前記流出口と
絞りを介して連通された背圧室が形成されていることを
特徴とする騒音低減弁。1. A valve body having an inflow port, an outflow port, and a fluid passage communicating between the inflow port and the outflow port for the pressurized fluid, and a front surface facing the inflow port and slidable in the valve body. And a spring for pressing the disc valve toward the inflow port, and a back pressure communicated with the outflow port through the throttle on the rear side of the disc valve. A noise reduction valve having a chamber formed therein.
板を有することを特徴とする請求項１記載の騒音低減
弁。2. The noise reduction valve according to claim 1, further comprising a straightening vane radially extending on a front surface of the disc valve.
ことを特徴とする請求項１又は２記載の騒音低減弁。3. The noise reduction valve according to claim 1, further comprising a pressure accumulator communicating with the back pressure chamber.
弁が油圧管路内に挿入されていることを特徴とする油圧
装置。4. A hydraulic system, wherein the noise reduction valve according to claim 1, 2 or 3 is inserted in a hydraulic line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4113619A JPH05306788A (en) | 1992-05-06 | 1992-05-06 | Noise reduction valve and hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4113619A JPH05306788A (en) | 1992-05-06 | 1992-05-06 | Noise reduction valve and hydraulic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05306788A true JPH05306788A (en) | 1993-11-19 |
Family
ID=14616809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4113619A Withdrawn JPH05306788A (en) | 1992-05-06 | 1992-05-06 | Noise reduction valve and hydraulic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05306788A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406791C (en) * | 2004-05-19 | 2008-07-30 | 株式会社鹭宫制作所 | throttle valve device and air conditioner |
-
1992
- 1992-05-06 JP JP4113619A patent/JPH05306788A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406791C (en) * | 2004-05-19 | 2008-07-30 | 株式会社鹭宫制作所 | throttle valve device and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100209047B1 (en) | Muffler with integral check valve | |
| JPH11208440A (en) | Brake control actuator | |
| CN103775402A (en) | Hydraulic valve arrangement and hydraulic machine arrangement having same | |
| TW354371B (en) | A module valve manifold, a valve module and an integral valve manifold/differential pressure transducer/differential pressure transmitter | |
| WO2006127337A3 (en) | Pressure regulator with reduced outlet pressure loss | |
| US20020050273A1 (en) | Pressure regulating valve and system | |
| JPH05306788A (en) | Noise reduction valve and hydraulic device | |
| JPS6160304B2 (en) | ||
| AU1087997A (en) | Control valves | |
| JP2002155836A (en) | Liquid control valve | |
| JP5599468B2 (en) | Switching valve for distributing fluid, especially for feed pumps arranged downstream | |
| JP2989030B2 (en) | Fluid pressure pulsation reduction device | |
| GB2135022A (en) | Improvements in or relating to impeller pumps particularly for fire fighting | |
| JP3097982B2 (en) | Accumulator device with pulsation damping mechanism | |
| JP2009115221A (en) | Pulsation-reducing device in hydraulic equipment | |
| CN215293059U (en) | Oil return valve | |
| GB1114260A (en) | A method of establishing an arrangement of valves providing a plurality of fluid pressure levels | |
| JPS5830152Y2 (en) | How to use the pump | |
| JPH0364739B2 (en) | ||
| JPH0531343Y2 (en) | ||
| US3859703A (en) | Method for making a check valve for a pump | |
| RU2266461C2 (en) | Pressure stabilizer for hydraulic system | |
| JPS6068410A (en) | Reversible reducing valve | |
| JPS5857569A (en) | Check valve | |
| JPH063149Y2 (en) | Mechanical supercharger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990706 |