我矿拥有YJB隔离泵两台,长期使用后发现阀箱结构存在缺陷,现对其结构提出如下改进意见。 阀箱原结构部分示意图见图1。阀箱的正常使用时间为1.5年,每台1.5万元,两台泵共用四个阀箱,每年仅此一项共耗资4万元。从阀箱损坏情况看,阀座以下内壁损坏最严重。由于砂浆长期流过造成阀箱内壁被磨蚀,变得凸凹不平,有的地方已经磨透。此磨蚀可分正常和非正常两种。正常磨蚀指由介质和管线结构等原因引起紊流造成的冲击磨损,以及砂浆流 I mine has YJB isolation pump two, after long-term use of valve box structure found flawed, the structure is proposed to improve the following views. Valve structure of the original schematic diagram shown in Figure 1. The normal use of the valve box time of 1.5 years, each 15,000 yuan, two pumps share four valve boxes, only a total cost of 40,000 yuan each year. From the valve box damage situation, the most serious damage to the inner wall below the seat. Due to long-term flow of mortar caused by the valve wall is worn, become uneven, some places have been worn. This abrasion can be divided into two kinds of normal and non-normal. Normal abrasion refers to the impact wear caused by turbulence caused by the medium and the structure of the pipeline, and the mortar flow