| 摘要 |
PURPOSE:To facilitate the promotion of corrosion resistance in every essential part through simplification in a change of these essential parts and reduction in the number of parts items, by making it into a simple structure having no mechanical rotative parts, making maintenance control so easily in reducing wear and trouble at each part, while promoting its miniaturization and lightweghtiness as a whole. CONSTITUTION:At the upper part of a pump body 1 whose overall circumference is covered, there is provided with a check valve 2A fitted with an inserted drain pipe 5A, and at the lower part, there is provided with a check valve 2B with a draft pipt 5B as well, then the inserted drain pipe 5A at the upper side is extended up to a spot proximate to a bottom part inside a cylider body 1a, and an external compressor 10 is interconnected to this cylinder body 1a, while an upper drain pipe 3 is connected to the upper check valve 2A, In and around the pump body 1, a level switch 11, which detects upper and lower water levels and transmits this detection to a control panel 6 at the outside. With this constitution aforesaid, it has no mechanical rotative parts and its form is simple enough so that wear and trouble in every part is as little as negligible and maintenance control is very easy. And, what is more, the whole lot of its structure comes to be compact in size and light in weight so that a change of essential parts is easily performable. |
