几乎所有的压铸机压射缸前腔油路中都有一个快排阀民，其结构见图1，原理见图2。快排闻通径随吨位增大而增大，此阀为非标准的液压件，且结构复杂，给用户维修带来不便，若更换此间要上主机厂调换，从而延误生产时间。目前125OkN及以上的压铸机液压系统都已采用二通插装网。为 Almost all of the die-casting machine before the pressure cylinder injection cavity has a fast-line valve manifold, the structure shown in Figure 1, the principle shown in Figure 2. The speed of the exhaust pipe increases with the increase of the tonnage. The valve is a non-standard hydraulic part, and the structure is complex. It brings inconvenience to the users for maintenance. If the replacement is to be replaced by the main engine factory, the production time will be delayed. At present 125OkN and above die-casting machine hydraulic system have been used two-way cartridge network. for