RU2521055C1 - Device for water disinfection - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: device for water disinfection contains a case 1 in the form of a cup with an input 16 and an output 17 branch pieces. A disinfection chamber 2 with an ultraviolet lamp 8 enclosed into a quartz casing 7 is located inside the case. A free cavity for passage of untreated water is formed between the side wall 3 of the disinfection chamber and the case. The disinfection chamber can be made from a polymer material with an internal coating stable to ultraviolet radiation. The edge of the quartz casing of the lamp is connected to the case by means of a holder 9, glued to the casing.

EFFECT: increased productivity of the device, increase of the service term and reliability of its work, simplicity of carrying out service maintenance and repair of the device.

3 cl, 1 dwg

Description

The invention relates to the treatment of water with the aim of disinfection by ultraviolet radiation.

A device for cleaning and disinfecting water, consisting of interconnected lid and housing, made in the form of a whole flask. In the cover there are inlet and outlet openings for the passage of water. In the center of the lid there is a hole for installing a quartz bulb with a UV lamp electrically connected to the power supply. A filter and a cylindrical insert made of stainless steel are located in the housing (US 5597482, class C02F 1/32, published January 28, 1997).

The disadvantages of this design include the following:

- a complex cover design that limits the size of the inlet and outlet water holes;

- a limited flow area of the disinfection chamber due to the fact that a significant part of the body volume is occupied by a filter element, which negatively affects the performance of the device;

- high price for stainless steel insert.

As the closest analogue of the invention, a device for treating drinking water containing a lid, a base, a working chamber and a distribution unit is selected. At the base, a node is made for installing a bactericidal lamp enclosed in a quartz cover connected to a power supply unit. The working chamber is divided by a tube with holes in the lower part into two coaxial chambers - disinfecting and filtering, and the distribution unit is made in the upper part of the device and includes inlet and outlet pipes (RU 22781, class C02F 1/32, published on April 27, 2002).

The aforementioned closest analogue eliminates a number of the above-mentioned disadvantages, however, it also has a limited pass-through section of the disinfection chamber due to the fact that a significant part of the volume of the installation case is occupied by a filter element, which does not allow to increase the throughput capacity of the device.

The technical result of the invention consists in increasing the productivity of the device, increasing the durability and reliability of its operation, simplifying the maintenance and repair of the device.

The named technical result is achieved in the invention using the following set of features.

A device for disinfection of water contains a housing in the form of a glass with a lid having an inlet and outlet nozzles. Inside the casing there is a disinfection chamber with an ultraviolet lamp enclosed in a quartz casing connected with a power supply unit. Openings for water passage are formed in the bottom and cover of the disinfection chamber. A free cavity (channel, compartment) is formed between the side wall of the disinfection chamber and the body for the passage of untreated water.

The disinfection chamber of the device is made of material resistant to ultraviolet radiation and can be made in the form of a single or collapsible part consisting of a cylindrical side part, a bottom and a cover with holes for water inlet and outlet.

The disinfection chamber of the device is made of polymer material, while the inner surface of the chamber has a coating that is resistant to ultraviolet radiation.

The quartz casing of the ultraviolet lamp is connected to the casing of the device by means of a holder rigidly fixed to the casing, for example, with glue certified for contact with drinking water. The casing holder enters the hole in the bottom of the device housing and has a seal in the form of a pair of rubber rings to prevent water leaks installed between the casing and the holder. On the outside of the holder is made an annular mounting (interacting with the bottom of the housing) and a safety (in relation to rubber rings) protrusion, under which the sealing rings are located.

The disinfection chamber is fixed (clamped) between the bottom and the cover of the device’s casing, while a sealing ring is installed between the cover of the disinfection chamber and the casing’s cover to prevent water from flowing to the device’s outlet, bypassing the disinfection chamber.

The invention is illustrated in the drawing, the figure of which shows a device for disinfection of assembled water (longitudinal section).

The proposed device consists of a hollow body 1 in the form of a glass, inside which there is a disinfection chamber 2 having a cylindrical side wall 3, which separates the disinfection chamber from the walls of the housing 1 with the formation of a free cavity between them for the passage of untreated water. The bottom 4 of the disinfection chamber has a central hole for the quartz casing of the UV lamp and a hole 5 for the passage of untreated water into the disinfection chamber 2. In the center of the cover of the disinfection chamber there is a hole 6 for exiting the treated water chamber.

In the cavity of the disinfection chamber 2, an ultraviolet lamp 8 enclosed in a quartz casing 7 is installed. The lamp is fixed in a cartridge, which in turn is mounted on the holder 9 and connected by an electric cable 10 to the power supply 11.

In the lower part of the housing 1 of the proposed device there is a round hole in which the holder 12 of the quartz casing 7 fits tightly. A pair of sealing rings 13 is installed between the outer cylindrical surface of the holder 12 and the inner surface of the opening of the housing 1. The housing holder 12 is fixed to the housing of the glass 1 with a union nut fourteen.

In the cover of the housing 1 of the proposed device is a distribution node 15, including the input 16 and output 17 pipes. Also in the area of the outlet 6 of the disinfection chamber between the covers of the housing and the disinfection chamber, a sealing ring 18 is installed.

The side wall 3 of the disinfection chamber can be made integrally with the bottom 4 and the cover with a hole 6 (as shown in the drawing) or in the form of a prefabricated structure. The parts of the disinfection chamber can be made of a polymer material having a coating resistant to UV radiation from the inside.

The device operates as follows

As shown in the drawing, the untreated (source) water enters through the inlet pipe 16 of the distribution unit 15 into the outer cavity of the housing 1, on the one hand limited by the wall of the housing, and on the other, by the side wall 3 of the disinfection chamber 2. Then, the water passes through the holes 5 in the bottom disinfection chamber and, getting into its cavity, is subjected to disinfection treatment from the side of UV radiation coming from the lamp 8.

After processing, water leaves the hole 6 of the disinfection chamber and enters the outlet pipe 17 of the distribution unit.

The sealing ring 18 prevents the flow of untreated water from the inlet pipe 16 to the outlet pipe 17 designed for treated water.

The presence of the holder 12 glued to the casing 7, as well as the location of the sealing rings 13, preventing water leakage at the entry point of the holder 12 into the housing of the device 1, is one of the distinguishing features of this solution.

It should be noted that in the known solutions for sealing the quartz casing of the UV lamp, elastic (rubber) rings are used. During operation of the device, these rings are inevitably exposed to UV radiation and lose their elasticity. This causes water leakage.

In the proposed design, the rings 13 seal the casing holder 12 and with the help of the ring protrusion 19 formed on the outside of the holder 12, they are protected from UV radiation, which increases the reliability and, accordingly, the durability of the structure as a whole.

The performance of the device for ultraviolet disinfection directly depends on the volume of the disinfection chamber, i.e. volume in which water is treated by radiation. The larger this volume, the greater the performance of the device at a given UV lamp power. The combination of UV-treatment of water with its filtration inevitably leads to a decrease in the size of the disinfection chamber, because a filter is also required to accommodate the filter.

In connection with the rejection of filtering in the proposed device, the volume of the working chamber is increased, and therefore its productivity is also increased.

The use of polymer materials with an internal protective coating as a material for the manufacture of the working chamber significantly reduces the cost of the device.

Claims (3)

1. A device for disinfecting water, comprising a casing in the form of a glass with a lid having an inlet and outlet, a disinfection chamber is located inside the casing, equipped with an ultraviolet lamp enclosed in a quartz casing, and openings for water passage are formed in the bottom and lid of the disinfection chamber, a quartz casing is connected to the casing by means of a holder rigidly fixed to the casing and having an annular protrusion on the outer side interacting with the bottom of the casing, and between the casing and the holder under the annular a protrusion mounted sealing rings, and between the side wall of the disinfection chamber and the body formed a free cavity for the passage of untreated water. 2. The device according to claim 1, characterized in that the disinfection chamber is made of a polymer material with a coating that is resistant to ultraviolet radiation. 3. The device according to claim 1, characterized in that the disinfection chamber is fixed between the bottom and the housing cover, and a sealing ring is installed between the disinfection chamber cover and the housing cover.