产品描述
一.溢流阀
是一种液压压力控制阀，在液压设备中主要起定压溢流作用，稳压，系统卸荷和安全保护作用。溢流阀在装配或使用中，由于O形密封圈、组合密封圈的损坏，或者安装螺钉、管接头的松动，都可能造成不应有的外泄漏。
如果锥阀或主阀芯磨损过大，或者密封面接触不良，还将造成内泄漏过大，甚至影响正常工作
二、主要作用：
1、定压溢流作用:在定量泵节流调节系统中，定量泵提供的是恒定流量。当系统压力增大时，会使流量需求减小。此时溢流阀开启，使多余流量溢回油箱，保证溢流阀进口压力，即泵出口压力恒定(阀口常随压力波动开启)。
2、稳压作用:溢流阀串联在回油路上，溢流阀产生背压，运动部件平稳性增加。
3、系统卸荷作用:在溢流阀的遥控口串接溢小流量的电磁阀，当电磁铁通电时，溢流阀的遥控口通油箱，此时液压泵卸荷。溢流阀此时作为卸荷阀使用。
4、安全保护作用:系统正常工作时，阀门关闭。只有负载超过规定的极限(系统压力超过调定压力)时开启溢流，进行过载保护，使系统压力不再增加(通常使溢流阀的调定压力比系统最高工作压力高10%~20%)。
5、实际应用中一般有:作卸荷阀用，作远程调压阀，作高低压多级控制阀，作顺序阀，用于产生背压(串在回油路上)。
三、溢流阀一般有两种结构:1、直动型溢流阀 。2、先导式溢流阀。
对溢流阀的主要要求:调压范围大，调压偏差小，压力振摆小，动作灵敏，过载能力大，噪声小
免责声明丨 部分内容来源网络！本文仅供交流学习 , 版权归属原作者，部分图片、内容推送时未能及时与原作者取得联系，若来源标注错误或侵犯到您的权益烦请告知，我们将立即删除.
企业介绍
公司供应摊铺机配件，压路机配件，铣刨机配件，摊铺机刮板驱动轴，刮板驱动轴总成，找平仪，找平仪支架以及液压泵和配件。我厂还供应摊铺机易损件，摊铺机平衡梁，搅龙轴，踏板，输料底板，叶片，熨平板，减速机，链轨，履带板，支重轮，刮板大链条，输料链条等。
联系人：梁经理
联系方式：13645201509（微信同号）
QQ：2870202745
1、 Relief valve
It is a hydraulic pressure control valve that mainly functions as a constant pressure overflow, pressure stabilization, system unloading, and safety protection in hydraulic equipment. During assembly or use, the overflow valve may experience unexpected leakage due to damage to the O-ring or combination sealing ring, or loose installation screws or pipe joints.
If the cone valve or main valve core is excessively worn or the sealing surface is in poor contact, it will also cause excessive internal leakage and even affect normal operation
2、 Main functions:
1. Constant pressure overflow function: In the throttling and regulating system of the quantitative pump, the quantitative pump provides a constant flow rate. When the system pressure increases, it will reduce the flow demand. At this point, the overflow valve opens, causing excess flow to overflow back into the oil tank, ensuring that the inlet pressure of the overflow valve, i.e. the pump outlet pressure, remains constant (the valve port often opens with pressure fluctuations).
2. Pressure stabilizing effect: The overflow valve is connected in series on the return oil circuit, generating back pressure and increasing the stability of the moving parts.
3. System unloading function: Connect a small flow solenoid valve in series to the remote control port of the overflow valve. When the solenoid iron is energized, the remote control port of the overflow valve is connected to the oil tank, and the hydraulic pump is unloaded at this time. The overflow valve is now used as a unloading valve.
4. Safety protection function: When the system is working normally, the valve is closed. Only when the load exceeds the specified limit (the system pressure exceeds the set pressure), can the overflow be opened for overload protection to prevent the system pressure from increasing (usually the set pressure of the overflow valve is 10% to 20% higher than the maximum working pressure of the system).
5. In practical applications, it is generally used as a unloading valve, a remote pressure regulating valve, a high and low pressure multi-stage control valve, a sequence valve, and used to generate back pressure (connected to the return oil circuit).
3、 There are generally two types of structures for relief valves: 1. Direct acting relief valves. 2. Pilot operated relief valve.
The main requirements for the overflow valve are: large pressure adjustment range, small pressure deviation, small pressure oscillation, sensitive action, high overload capacity, and low noise
Disclaimer | Part of the content comes from the internet! This article is for communication and learning purposes only. The copyright belongs to the original author. Some images and content were not promptly communicated to the original author during push notifications. If the source labeling is incorrect or infringes on your rights, please inform us and we will immediately delete it
Enterprise Introduction
The company supplies paver accessories, roller accessories, milling machine accessories, paver scraper drive shaft, scraper drive shaft assembly, leveling instrument, leveling instrument support, hydraulic pump and accessories. Our factory also supplies vulnerable parts of paver, balance beam of paver, auger shaft, pedal, conveying bottom plate, blade, screed, reducer, chain rail, track plate, supporting wheel, scraper large chain, conveying chain, etc.
Contact person: Manager Liang
Contact information: 13645201509 (same WeChat account)
QQ: 2870202745
您的专属咨询顾问：梁经理
咨询电话：13645201509
详细地址：徐州市泉山区段庄街道矿山路
备案号：05039780