论文部分内容阅读
黑龙江省宝清县在大力发展水稻种植的同时,创造了一种适合当地条件新井型——空多管汇流井。这种井的技术简单、开凿容易、或成本低廉,旦消能少。 一、真空多管汇流井的结构 它是由一个汇流空腔、一组进水管、一个出水管和一个手压泵组成(见照片)。它的出水管与一般水泵连接的出水管无区别,进水管由4～12根1时到2时的聚乙稀软管组成,与集水空腔连接形成一个整体。集水空腔用钢板焊成,有矩形或半园形两种,它的一侧焊有与聚乙稀软管联接的金属短管。进水管组既起井管的作用又起吸水管的作用,集水空腔上装有一个手压泵,它的作用是在于排除集水空腔和进水管中的空气,使空腔与集水管内形成负压,在大气压力的作用下,地下水就通过进水管进入集水空腔,空
Baoqing County, Heilongjiang Province, while vigorously developing rice cultivation at the same time, creating a new type of well suited to local conditions - empty manifold manifold. The technique of this well is simple, easy to cut, or low cost, with little energy dissipation. First, the vacuum manifold manifold structure It consists of a confluence cavity, a set of inlet, a outlet pipe and a hand pump (see photo). Its outlet pipe and the general pump connected to the outlet pipe without distinction, the inlet pipe from 4 to 12 1:00 to 2:00 when the composition of polyethylene hoses and water collecting cavity connected to form a whole. The water collecting cavity is welded with steel plate, there are two kinds of rectangular or semicircular shape, one side of which is welded with a metal short pipe connected with a polyethylene hose. The water inlet pipe set plays the role of a well pipe and a water suction pipe. A water pump is provided on the water collecting cavity. Its function is to eliminate the air in the water collecting cavity and the water inlet pipe, Negative pressure in the tube, under the action of atmospheric pressure, groundwater through the inlet pipe into the catchment cavity, empty