Automatic drain valve of the electric pump. Drawing, description

TOOLS AND MECHANISMS FOR AGRICULTURE
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Automatic drain valve of the electric pump. Drawing, description

Tools and mechanisms for agriculture

Directory / Tools and mechanisms for agriculture

In the water supply systems of many country houses, submersible vibration electric pumps "Rucheyok", "Kid" and the like are used. They are convenient, compact, do not require maintenance, however, in winter, when the pump is turned off, the water is "locked" in their supply hose and, having no flow into the well, freezes.

The simplest solution to the problem is to make a drain hole at the bottom of the hose. However, if it is small, the water may have time to turn into ice, and if it is large, the working pressure becomes insufficient.

This problem can be solved by introducing an automatic drain valve into the electric pump hose. It consists of only four parts: a body and a cover with hose fittings, a rubber gasket between them and a cup-shaped piston valve.

Automatic drain valve device (click to enlarge): 1 - valve body (brass, bronze), 2 - piston (textolite, fluoroplast, ebonite), 3 - gasket, 4 - body cover

During operation of the pump, the drain holes made in the housing are blocked by the cylindrical surface of the piston, since the flow of water keeps it in the upper position. When the unit is turned off, the piston under the action of its own weight falls, opens the drain holes and the water supply network is quickly emptied. So, with the dimensions indicated on the drawing, the discharge of the network with a length of about 25 m lasts no more than a minute, so even a 30-degree frost does not have time to bind water in the system.

The only condition for efficient operation is that the hose from the house to the pump must have a constant slope, without kinks and "pockets".

Author: V.Burtsev

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