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Device for cleaning, widening and repairing wells of drinking water and irrigation water
| Details |
Inventors: Levoni, Carlo F.; Levoni, Gian P.;
Assignee:
Primary Examiner: Novosad; Stephen J.
Assistant Examiner: Suchfield; George A.
Attorney, Agent or Firm: Browdy and Neimark
A device for cleaning, widening and repairing of wells comprises a pipe for supplying, through a valve, compressed-air into the well and a water and air discharge pipe coaxially surrounding the air supply pipe and terminating at its upper end with a bell airtightly welded to the periphery of the air supply pipe. The water and air discharge pipe as its upper part has a first port communicating with a water discharge pipe through a valve and a second port communicating with an air discharge pipe through another valve. A head surrounds the upper portion of the water and air discharge pipe and at its upper end is airtightly welded to the periphery of the water and air discharge pipe and at its lower end terminates in a flange detachably secured to the upper end of the well-jacket. The head has a third port communicating through a valve with a pipe for discharging and similar purposes. Moreover, there are provided two annular rubber diaphragms for defining in the depth of the well the zone in which the compressed-air has to be blown for widening the well and other elements to remove deposits, stones and putrid waters. Another device is provided for removal of the pebble gravel of the well-filter and earth blocks clogging the well-filter. |
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DETAILED DESCRIPTION The prior state of art involves some defects and drawbacks.
First of all, besides the fact that such a device does not allow the bottom water to be discharged when wells have depths greater than 120 m, it happens that, under compressed air thrust, water goes up a certain length, not only in the internal hollow space but also in the external hollow space existing between the well jacket and the delivery pipe.
Since there are some slits at different heights in the jacket corresponding to different waterbeds, dirty water, coming from the well bottom and the lower section of the wall of the well itself, pollutes the higher waterbeds.
Moreover, such a device does not allow for discharging putrid waters that stagnate around the well even for many dozens of meters and does not allow for the widening of the original hole of the well without removing the jacket and other materials inside the well, when the water flow or the thickness and efficiency of the gravel filter surrounding the well have to be increased.
Finally, such a device involves the possible clogging of the upper slits of the well jacket, because sand and slime standing at the bottom of the well can be dragged up by the water pushed pneumatically and can stop at upper levels, clogging and polluating the water-beds.
Because of these defects and disadvantages, it is necessary to solve the new technical problem by finding a device which allows a whole cleaning, that is to say the real draining, not only of the water contained inside the well, but also of stagnating waters around the well hole within a hundred-meter radius.
This is the only way of obtaining a satisfactory cleaning of the well and of the different water-beds, since it is necessary to take limpid and drinking water out of the well for irrigation and drinking water supply, because of the germicidal power of air, and above all because of the slime, putrid water, stones and dirt which have to be removed.
Also, it is possible to adjust the same device to widen the original well hole according to what has been explained above, to remove filter cloggings due to building irregularities, or to strong de-pressures caused by the pump, and/or to earth blocks
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Heat Accumulators 
