Normally, the cumulated water in top cover is drained to cumulated water well by gravity drainage, in emergency situation, the water would be drained by the self-priming pump installed in gallery.
顶盖内积水正常情况下通过自流排水排至积水井，紧急状态下通过装在廊道内的自吸泵排水。
In general, a foot valve can be mounted if the pump is mounted above the water level of the water inlet so as to start the pump with priming, it can also use the way of vacuum pump water leading.
如水泵安装在进水水位以上时，为了灌泵启动，一般可装底阀，也可采用真空泵引水的方法。
The preparing, performance and upgrading by epoxy resins of priming paint coating of iron and steel of water-solubility acrylic are discussed in this paper.
本实验论述了水溶性丙烯酸钢铁底漆涂料制备、性能以及用环氧树脂对其进行改性。
CLZ Series Marine vertical self-priming centrifugal pumps are used at cabin bottom to cool water and fight fire.
CLZ系列船用立式自吸离心泵适用于船舶载泵、舱底泵、冷却泵、消防泵及总用泵等。
This paper involved the selection of blasting parameters, calculation of charge weight, design of priming circuit, waterproof treatment of charges and the processes of charge setup and water pouring.
文中介绍了爆破参数的选取、药量计算、起爆网路的设计、药包防水处理以及布药和注水工艺。
When the pump starts working, the self-priming process can be achieved, and the valve of water-ejecting will be shut off automatically to stop the working of jet flow system simultaneously.
泵运转时，不仅可以完成自吸过程，而且可以将自循环射流器上的阀门关闭，射流器同时停止工作。
Safe and convenient in application, the water-based epoxy zinc-rich priming paint has no pollution to the environment and is harmless to the workers.
该水性环氧富锌底漆使用安全方 便，对环境无污染，对施工人员身体健康无害；
Round slag tank. After evenly mixing the separating agent and water for 10 minutes, spray and paint it with sewage self-priming pump.
圆形渣罐，分离剂加水傥拌均匀10分钟后，用污水自吸泵进行喷涂。
This invention relates to a water-based epoxy zinc-rich priming paint.
本发明涉及一种水性环氧富锌底漆。
The air-jet exhauster is a compressed air-operated device for pump priming, provided that the pump has no foot valve. Water is induced into the pump by vacuum created by the exhauster.
以压缩空气为动力的气体引射器，它是用在无底阀水泵上的抽气引水设备，具有结构简单、加工制做容易、耗气量小、效率高等特点。
The air-jet exhauster is a compressed air-operated device for pump priming, provided that the pump has no foot valve. Water is induced into the pump by vacuum created by the exhauster.
以压缩空气为动力的气体引射器，它是用在无底阀水泵上的抽气引水设备，具有结构简单、加工制做容易、耗气量小、效率高等特点。
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