SU1723251A1 - Drain well - Google Patents

Abstract

The invention relates to the field of irrigation and drainage construction and can be used in the construction of control and inspection wells on closed drainage systems. The purpose of the invention is to increase the efficiency of drainage by reducing the sedimentation of the drainage. The drainage well comprises a housing 1. made of precast concrete rings, a bottom 2, a cover 3, supplying 4 and a discharge pipe 5. In order to reduce the silting of the supply 4 and the exhaust pipe 5 with the ground 6, they are interconnected by a perforated branch pipe 9 in the filter casing 10. The branch pipe 9 has a water outlet 13 located behind the supply pipe 4 and a water intake 14 located in front of the exhaust pipe 5 Both openings are fitted with valves with floats installed at the working water level in the well. 1. zp f-ly, 3 ill. (Ls

Description

The invention relates to the field of irrigation and drainage construction and can be used in the construction of control and inspection wells on closed drainage systems.

The purpose of the invention is to increase the efficiency of drainage by reducing the sedimentation of the drainage.

FIG. 1 schematically shows a drainage well, a vertical section in the normal operating mode; Fig. 2 is the same in the process of entering surface water and silting a well with soil; in fig. 3 shows section A-A in FIG. one.

The drainage well consists of a housing 1 made of reinforced concrete wells, a bottom 2, a cover 3, an inlet pipe 4, a discharge pipe 5. Inside the well to prevent silting

the ground 6 transported by drainage or surface water 7 through the slots 8 in the housing 1 formed during operation, the inlet and outlet pipes are connected by a perforated pipe 9 in the filter sheath 10, on top of which there is a control and inspection opening 11 closed by a stopper 12 and the bottom , at the inlet pipe 4, - a drain hole 13 and at the outlet pipe 5 - a water intake hole 14, below each of which valves 15 and 16 are mounted coaxially. Connected by means of pipes 17 and 18 to the floats 19 and 20 installed at the working mark ur Aries water 21 in the well.

Drainage well works as follows. At steady-state operating conditions and the water level in the well, the pollavki 19 and 20 and attached to them

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the valves 15 and 16 are in the lower position, the openings 13 and 14 are open. The water entering through the supply pipe 4 flows out through the opening 13 into the well, where it stands apart from the transported soil particles and flows further clarified through the water intake hole 14 into the discharge pipe 5. The operation of the drains is established by the movement of water in the well.

In the case when surface water 7 through the gaps in the well body formed during operation enters it, the water level starts to rise, and with it the floats 19 and 20 with valves 15 and 16 attached to them, which close the holes 13 and 14 in the pipe 9. In this case, the surface water 7, saturated with soil, partially settled in the well, flows through the filter sheath 10 and the perforations in the pipe 9, is cleared from the soil and together with the drainage water coming from the supply pipe 4, transit TF further through the discharge pipe 5.

After cessation of surface water 7 into the well, its settling and discharge, the working water level is established in the well, and a layer of soil 6 is deposited on the bottom of it 2, when the layer of deposited soil is below the working level of water in the well, floats 19 and 20 and the valves 15 and 16 attached to them are lowered, holes 13 and 14 open, water from supply pipe 4 through hole 13 pours out into the well, and then through hole 14 enters clarified into a discharge pipe 5. The fact of operation of drains .

In the case when the layer of soil deposited in the well 6 is equal to or higher than the working level of water in the well, the holes 13 and 14 remain closed by valves 15 and 16 and the water from the supply pipe 4 transits into the discharge pipe 5

For operative control of the operation of the drains connected to the well, the stopper 12 is removed from the control and inspection opening 11 and the fact of their work is established by the movement of the water.

To ensure maintenance work on drains connected to the refrigerant, such as flushing, the well is cleared of soil, the nipple 9 is removed, then the necessary washing operations are performed, and the nipple 9 with the filter casing is washed and installed in place

Claims (2)

1. A drainage well, comprising a housing and inlet and outlet pipes communicated with it, interconnected by means of a nozzle having a drain hole with a valve, characterized in that, in order to increase drainage efficiency by reducing the silting of drains, the nozzle is perforated It is equipped with a filter casing and a water inlet with a valve, while the water outlet is located behind the inlet pipe, and the water inlet - in front of the outlet. 2. Drainage well, characterized in that the valves are provided with floats installed at the level of the working water level in the well. U & /.  //////////////////////// / ////// V tf y% /% / j & 3 &