RU116872U1 - WELL FILTER - Google Patents

Abstract

A well filter containing a concrete ring and a crushed stone filter, characterized in that a mesh made of stainless steel wire is rigidly fixed at the bottom of the concrete ring, and a geotextile filtering layer is also rigidly attached to it from the outside, and the mesh and the filtering layer are set apart from each other at a distance of at least 20 mm, preventing the penetration of fine sand into the well.

Description

The utility model relates to the field of construction, in particular, cottage and household construction of reinforced concrete wells and can be used to protect wells from penetration of fine sand into their volume. As is known (see V. Dolin. Wells. M., Knowledge, 1989. N. Belov. Bath, well, cellar. Harverst, 2008.), gravel filters consisting of several layers of gravel or fine gravel are used in wells for water treatment. pebbles. However, in the summer months, when the water level in the wells decreases, crushed stone filters do not save fine sand, the so-called quicksand, which completely fills the wells, displacing water from them. Especially this affects the wells located along the shores of large shallow lakes, such as Lake Ilmen. Starting in August, in such wells water is completely replaced by a quicksand and residents of coastal villages are left without well water.

The closest technical solution adopted for the prototype is a strainer used in tubular wells (see ON Dolin. Wells and wells with their own hands, http://www.nashekodom.ru).

The disadvantage of the prototype is the complexity of the filter design associated with its cylindrical shape and the complexity of its installation, which leads to the limited use of such filters only in deep tubular wells.

The objective of the utility model is to create a simple filter design for a reinforced concrete well, which allows you to save water in it and protect the well from the penetration of fine sand into it.

To solve this problem, a design of a well filter consisting of a concrete ring 1, a mesh of stainless steel wire 2 and a filter layer of geotextile 3 is proposed. To prevent fine sand from entering the well, a filter layer of geotextile is used, and a stainless steel mesh is used to support it wire. Since fine sand will freely pass through the crushed stone filter 4 and exert pressure on the filter layer and the mesh, they must be rigidly fixed, i.e. cement in a concrete ring. The developed design of a well filter for a reinforced concrete well was manufactured and tested. Using the filter showed its high efficiency - the water in the well remained throughout the year, including the summer months. In the developed design, the thickness of the geotextile was 10 mm, the diameter of the stainless wire for the mesh was 1.8 mm, the square of the mesh mesh was 10 mm, the distance from the bottom edge of the ring to the geotextile d1 was 50 mm, and the distance to the mesh d2 was 70 mm.

The proposed utility model allows to obtain the following technical result: the developed well filter has a simple design, allows you to effectively retain fine sand and keep water in the well even in the summer months of the year.

Claims (1)

A well filter containing a concrete ring and a crushed stone filter, characterized in that a mesh of stainless steel wire is rigidly fixed to the bottom of the concrete ring, and a filter layer of geotextiles is also rigidly attached to it from the outside, the mesh and filter layer being installed from each other at a distance of not less than 20 mm, which prevents the penetration of fine sand into the well.