FIELD: mechanical engineering. SUBSTANCE: submersible pump 1 is secured to water receiving pipe 2 arranged in casing spring 3 under a static level of soil water. Casing spring 3 is closed with tight cover 4 through which pipe 2 passes. Capillary pipe 5, that connects suction space of working wheel 6 of the first step of pump 1 with closed space of casing spring 3 at a level that no lower than a minimum permissible level of soil water, is secured to the case. In operating and when level of soil water is lowered down to the top part of capillary pipe 5 air begins to pump by pump 1 and the level of water in casing spring 3 rises. EFFECT: enhanced reliability. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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