RU199539U1 - DRAINING WELL - Google Patents

Abstract

The utility model relates to the field of wastewater treatment, namely to a drainage or filtration well, which can be used as one of the elements of the drainage system, or as a discharge point for wastewater after a septic tank or a deep biological treatment plant. The well is designed to receive and disperse storm water or treated domestic water into the ground. The technical result achieved by the implementation of this utility model consists in increasing the strength and tightness of the structure as a whole due to the design of one-piece structure, the absence of a welded seam, the presence of stiffeners and made of low-density high-pressure polyethylene. The specified technical result is achieved in a drainage well for wastewater treatment, made by seamless technology from low density polyethylene (high pressure) in the form of a solid truncated cone with perforation for water drainage along the lateral surface.

Description

The utility model relates to the field of wastewater treatment, namely to a drainage or filtration well, which can be used as one of the elements of the drainage system, or as a discharge point for wastewater after a septic tank or a deep biological treatment plant. The well is designed to receive and disperse into the ground stormwater or purified domestic water.

From the prior art, a sewer well is known, including a cast-iron set, a trough part and a bottom of a well, a conical support, a vertical pipe serving as a well barrel, a telescopic part, a sealing ring, the bottom of a well with a trough part serves as a base for a conical support into which a vertical pipe is inserted, while the conical support, vertical pipe, telescopic part can be made of plastic, and the sealing ring made of rubber (see RF patent No. 84406, published 10.07.2009).

When repairing (servicing / restoring) wells, the reinforced concrete rings of the well being repaired serve as formwork, and the bottom of the well with a trough part is used as the base of the newly installed plastic well structure of a smaller diameter. The overlap of the well with the cast iron kit is dismantled. On the bottom of the well with the trough part, a plastic element is mounted in the form of a cone support (in the form of a truncated cone), the lower part of the cone is equal to the inner diameter of the bottom of the well and is sealed with polyurethane foam filled with concrete to a height of 100-150 mm, in the upper part of the cone with a diameter of 400 mm with a rubber seal (O-ring) is inserted into a vertical pipe (well barrel) from a plastic pipe. A telescope (telescopic adapter) is inserted into the shaft of the well, into which a cast iron kit is pressed.

As can be seen from the description of the installation, the known solution is intended for the repair of already installed wells. In addition, it is not one-piece, which can lead to a loss of tightness between the parts (cone support, vertical pipe and telescopic part).

For the closest analogue to the patented solution, a filtration drainage well was adopted for collecting and dispersing storm and waste water. The well is made conical, has a lid, and has perforations on the sides (see http://food.on-doski.ru/info629053.html).

The disadvantages of the closest analogue are insufficiently high strength characteristics of resistance to soil pressure, which leads to the risk of deformation and depressurization of the structure.

The technical problem of the claimed utility model is the creation of a drainage well structure with high strength characteristics, tightness and operational safety.

The technical result achieved by the implementation of this utility model consists in increasing the strength and tightness of the structure as a whole due to the design of one-piece structure, the absence of a welded seam, the presence of stiffeners and made of low-density high-pressure polyethylene.

The specified technical result is achieved in a drainage well for wastewater treatment, made by seamless technology from low density polyethylene (high pressure) in the form of a solid truncated cone with perforation for water drainage along the lateral surface.

To give additional rigidity on the side surface of the well, transversely arranged annular stiffeners can be made.

As you know, high-pressure polyethylene (LDPE) has a density of 900-930 kg / m ³ , a melting point of 100-115 ° C and a brittleness temperature of up to -120 ° C, as well as low water absorption (about 0.02% per month) and high plastic. LDPE products are characterized by softness, flexibility, resistance to mechanical damage by tearing and impact, as well as to tensile and compressive deformations, high strength when exposed to low temperatures, moisture and air tightness, resistance to light, in particular to solar radiation.

In addition, the use of high-pressure polyethylene (LDPE) is absolutely safe for both humans and the environment, since it does not emit any toxic substances. That is why LDPE can be used even for contact with food and in the manufacture of baby products (see https://propolyethylene.ru/LDPE/). Making a conical shape will better keep the well in the ground.

Thus, all essential features are aimed at increasing the strength and tightness of the drainage or filtration well.

The essence of the proposed technical solution is illustrated by drawings.

Figure 1 shows a general view of a drainage well.

According to the claimed utility model, the drainage (filtration) well is a one-piece tank made of low-density polyethylene (high pressure), consisting of a body 1 made of one-piece (using seamless technology) in the form of a truncated cone with an open top and bottom and has perforations along the lateral surface ...

The body is made with annular stiffening ribs 2 located transversely along the body, in which perforation is made for better dispersion of waste water. The ribs help to securely hold the well in the ground and distribute external loads, which further increases its strength.

A cover (not shown) is included with the well.

Well height - 2000 mm, lower diameter - 915 mm, upper diameter - 600 mm. The well is manufactured by rotational molding. This method allows you to make the well as one-piece without seams and connecting elements. Therefore, the well has greater strength and reliability in comparison with similar products that are not solid. For additional strength, circular stiffening ribs 2 are made along the perimeter of the well. Additional holes on the body are expanded to a diameter of 8 ÷ 10 mm to avoid silting. Additional holes are located on stiffeners 2.

Well installation is carried out as follows.

A geotextile is laid in a previously prepared foundation pit, a well is installed, after which the lower part of the well inside and outside, about half the height of the well, is filled with drainage, which can be used as crushed stone. Further, a supply pipe is installed into a hole previously cut in the body at the required height, located above the filling with drainage, then the well is filled with soil removed during digging of the pit.

Waste water from the treatment plant through pipe 3 enters the well, where its final post-treatment takes place. Filtration is carried out by flowing water through a filtering layer of inert fractional material of a certain grain size (gravel, crushed stone, sand).

The production of the well is carried out in the factory, on modern equipment by the rotational molding method. The case is made of low density polyethylene (LDPE), which gives additional strength to the case, allowing it to be used at low and high temperatures.

Thus, in the claimed utility model, an increase in the strength of the structure as a whole is achieved due to the absence of welded seams, the presence of stiffening ribs and the performance of a low-density polymer.

Claims (2)

1. Drainage well for wastewater treatment, characterized by the fact that it is made by seamless technology from low density polyethylene in the form of a solid truncated cone with perforation to drain water along the lateral surface. 2. A drainage well for wastewater treatment according to claim 1, characterized in that transversely arranged annular stiffeners are made on the lateral surface.

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