SU1232742A1 - Evacuation drainage system - Google Patents

Description

The invention relates to agriculture, in particular to the drainage of soils of heavy mechanical composition.

The aim of the invention is to save energy on creating a vacuum.

Figures 1 and 2 schematically depict a vacuum drainage system.

The system consists of drains 1, made of a microporous material and connected to a drainage collector 2, the mouth of which is equipped with a crib with a V-shaped branch pipe 3.

The opposite end of the nozzle 3 is brought into the waste network, for example, the waste manifold 4, the V-shaped nozzle 3 is placed in the sump well 5 and provided with a valve 6 in the lower part controlled by the water level in the soil, for example, between the rows. The inner surface of the well 5 is lined with finely porous material 7, which is outwardly extended in the upper part of the well, for example, in the form of an evaporating radiator.

The vacuum drainage system operates as follows.

During the period of maximum excessive moisture, for example in spring, the soil is saturated with moisture, the groundwater level is high, for example on the soil surface (mark a). Valve 6, Controlled by the water level in the soil, for example, at the interval, is closed. Fine material 7 is saturated with moisture. Excessive groundwater fills the drain 1, the drainage collector 2, the V-shaped pipe 3 and flows freely into the waste network, for example, the waste collector 4. The drainage system works in a gravity mode, ensuring the drainage of gravity water flows through the trench backfill in the drainage. When the level of groundwater reaches a mark corresponding to the value of the initial gradient for a given soil (for example, mark b), the pressure above the drain becomes less than the value of the initial gradient; and the free flow of groundwater ceases. Simultaneously with reaching the groundwater level

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At this mark, the valve 6 opens, the excess from the V-shaped port 3 is drained into the well 5 and the further drainage of groundwater is carried out

5 under the action of negative pressure, the value of which is determined by the difference in elevation of the mouth of the collector 2 and the outlet of valve 6, into the cavity of the well 5, the volume of which

10 is sufficient to divert the volume of capillary water from a mark corresponding to the value of the initial gradient to a level corresponding to the required rate of drainage (for example,

) 5 mark c). In case of overflow of well 5 (reaching the level of the discharge knee of the V-shaped pipe), excess water on the discharge pipe of the V-shaped pipe 3 begins to drain into the waste collector 4 and drains 1 will operate in a mode close to gravity with minimum negative pressure. Simultaneously with the lowering of the groundwater level and

25 by decreasing the soil moisture, the finely porous material 7, brought out in the upper part of the well 5 to the outside, for example, in the form of an evaporating radiator, due to the potential difference, the moisture begins to drain water from the cavity of the prey 5, due

the water level B of the well cavity 5 is being operated down to the level corresponding to the output level

valve bore 6.

When the groundwater level rises above the b mark corresponding to the initial gradient for a given ground, the valve 6 closes and the system after filling

- The shaped pipe starts to work in gravity mode. By reducing the level of groundwater, which opens valve 6, the cycle

repeats

Emptying the well 5 can be carried out with finely porous material 7 brought out in the upper part of the well 5 into the soil below the level of the arable layer, for example, in the form of a shelf, due to the potential difference of moisture (FI1-.2 :).

Editor P. Cossey

Compiled by I. Selt Metov

Tehred V. Kadar Proofreader S. Shekmar

Order 2743/30 Circulation 641 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

VACUUM DRAINAGE SYSTEM, including a sealed intake well, a collector and drainage made of microporous material connected to an elbow located in the intake well, characterized in that, in order to save energy for creating a vacuum, the elbow is made V-shaped, connected to the collector and equipped with a valve installed in the lower part, controlled by the water level in the soil, and the inner surface of the well is lined with finely porous material, removed in the upper part of the well or on the day surface, or into the soil below the arable horizon.