SU408995A1 - At PT5 - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to agriculture and can be used in stationary closed irrigation systems.

Retractable underground hydrants are known, including a KOipnyc, a plunger and a device for facilitating the excavation of the latter, mounted on the top of the nozzle, which serves to wash out the soil while the plunger is deepened and to reduce the effort required for excavation.

However, when using such hydrants, after the plunger is sunk, the craters remain in the soil, and vibrations of the overmoistened soil are created, disturbing the soil structure when the hydrant trunk deepens.

The funnels of 0.4–0.6 m deep remaining after the plunger of the hydrant plunging are poorly visible, resulting in possible injury to people and animals. Manual priming of funnels with primer during repeated penetrations of hydrants is inefficient, the creation of a special mechanism for this purpose is impractical due to the small amount of work and dispersion of the funnels.

The aim of the invention is to provide an automatic backfilling of the funnel, which remains after the plunger of the hydra 1t is sunk, to preserve the natural structure of the soil near the hydrant and to decrease the soil resistance when the trunk is deepened.

This is achieved by the fact that the device for facilitating the deepening of the plunger is made in the form of a glass mounted in the upper part of the plunger with sharp upper edges and a movable bottom having protrusions freely included in the longitudinal through cuts made in the glass. The glass is provided with a casing fixed to the hydrant body and having a thrust flange that limits the depth of the glass to descend. Holes are made in the bottom of the casing to remove water that has entered the housing.

FIG. 1 schematically shows the proposed retractable underground hydrant, general view, recessed position; lu ;: FIG. 2 - the same, the recessed position; us fig. 3 - movable bottom of the glass.

The extendable underground hydrant has a device for facilitating the deepening of the plunger 1, consisting of a retractable cup 3 fixed to the lid with longitudinal through cuts and a movable bottom 4 with projections 5. To limit the depth of the stack 3, it is provided with a casing 6 with a stop flange 7. In the bottom parts of the casing 6 are provided with holes 8 for discharging water trapped in a glass and a casing. It is recommended that the opening is made from the outside with a return filter. The projections 5 are free to move in the gaps of the stacks of the stack. The upper end of the glass is pointed.

Hydrant works as follows.

When the plunger penetrates, the cup 3 attached to the lid of the retractable plunger / rises and sharply cuts the upper edge into the overlying layer of soil. Under the ground floor, the movable bottom 4, the sliding protrusions 5 along the sections of the glass, “does not prevent the filling of the glass with soil. The height of the glass is equal to the layer of earth above the buried hydrant. The ground-filled cup with the hydrant lid is recessed and is in the upper position until the end of irrigation. When the hydrant is buried, the plunger is lowered together with the glass, the projections 5 abut against the thrust flange 7 of the casing 6. Continuing to descend, the glass is released from the soil, which fills the funnel left after the hydrant is sunk.

A necessary condition for guaranteeing the work of the nozzle is loose soil, i.e., the same as in the treated areas of the floor. Diameter

cup and casing is selected depending on the physical and mechanical properties of the soil.

Subject invention

Claims (3)

1. A retractable underground hydrant, comprising a housing, a plunger and a device for facilitating the excavation of the latter, characterized in that, in order to provide a reverse the backfill formed during the recess of the funnel plunger, a device for facilitating the digging. performed as a top part of the glass mounted on the plunger, having pointed upper edges, longitudinal through raerez and movable bottom with protrusions freely entering cuts of the glass. 2. A hydrant according to claim 1, characterized in that, in order to limit the depth of destapling, the latter is provided with a casing fixed to the hydrant body and having a thrust flange. 3. Hydrant on PP. 1 and 2, characterized in that, in order to remove trapped water, holes are made in its lower part. J five B5 five about / 7 b /five oo fpa8.3