RU2198847C2 - Device for decontamination of water - Google Patents

Abstract

FIELD: devices for decontamination of potable water in public services and farming; food-processing and other industries. SUBSTANCE: proposed device includes contraction 1, neck 2, diffuser 3, profiled needle 4, T-piece 7, turbine 5 mounted on needle 4 and provided with blades 6; profiled needle 4 is mounted for performing rotary motion; turbine 5 is located in chamber 13 of T-piece 7 whose left-hand portion is connected with external part of periphery of diffuser 3 and right-hand portion is closed with seal 8 having through hole 9 in center part for passage of needle 4 and mounting bearings 10; lower part is used for discharge of water. Besides that, profiled needle 4 is connected with AC or DC electric motor 11 by means of coupling 12. EFFECT: enhanced economical efficiency and reliability; extended field of application. 2 cl, 1 dwg

Description

 The invention relates to a device for the disinfection of drinking water and sewage sludge and can be used in utilities and agriculture, as well as food and other industries.

 A device for disinfecting water such as a Venturi pipe (cavitation generator), containing a confuser - the front part, tapering the flow, the neck - the narrow part, the diffuser - the expanding end part [1].

The disadvantages of this device are:
1. A cavitation layer is formed in the diffusion part of the pipe on the sides of a continuous stream of liquid moving along the axis of the pipe. In a fluid moving along the axis of the diffuser, cavitation is absent, and therefore, the disinfection efficiency is reduced due to the "slip" of pathogenic microorganisms and helminth eggs.

 2. The temperature of the disinfected water should be constant. If the water temperature changes, for example, a decrease in temperature, it must be heated.

 A device for disinfecting water is known, including a confuser, a neck, a diffuser, a profiled needle installed in its central part and fixed in a washer with windows from the outside with the possibility of its movement along the diffuser, while the washer is placed in the coupling. In addition, the diffuser is equipped with a removable nozzle made of anti-erosion material, and the cross-sectional area is larger than the cross-sectional area of the diffuser [2] (PROTOTYPE).

 The disadvantage of this device is its use for disinfection of wastewater at a constant temperature, and with a decrease in the temperature of the wastewater in front of the device, the reliability of the device and its efficiency are reduced.

 The problem to which the invention is directed, is to increase the efficiency, reliability of operation of the device and expand the scope of its application (disinfection of wastewater, water for domestic and drinking water supply, at waterworks and for repeated disinfection of water immediately before serving it to consumers due to the possibility of re-bacterial contamination in a worn distribution network).

 This object is achieved in that in a device for disinfecting water containing a confuser, a neck, a diffuser, a profiled needle installed in its central part, the device contains a tee, and the profile needle contains a turbine with blades, the needle has the ability to rotate, the turbine is installed in chamber of the tee, the left part of the tee is connected to the outer part of the diffuser, the right part is closed by a seal with a through hole in the central part for passage of the profiled needle and installation under Shipnikov, the lower part is used to drain water, the profiled needle is connected using a coupling with an electric motor using alternating or direct current.

 Other technical solutions known from the prior art were not found by the authors. Thus, our technical solution meets the criterion of "NEW".

 Known: a device for disinfecting water such as a Venturi pipe (cavitation generator), containing a confuser - the front part, tapering downstream, the neck - the middle part, the diffuser - expanding end part [1]. A device for disinfecting water is also known, including a confuser, a neck, a diffuser, a profiled needle installed in its central part and mounted in a washer with windows, a sleeve mounted on the diffuser from the outside with the possibility of its movement along the diffuser, while the washer is placed in the sleeve in addition, the diffuser is equipped with a removable nozzle made of anti-erosion material, and the cross-sectional area is larger than the cross-sectional area of the diffuser [2].

 However, the use of a combination of distinctive features to increase the efficiency, reliability of operation of the device and expand the scope of its application (disinfection of wastewater, water for domestic and drinking water supply at waterworks and re-disinfection of water immediately before supplying it to consumers due to the possibility of repeated bacterial contamination in a worn distribution water supply network) was not found by the authors. Thus, we can conclude that the invention has an inventive step.

 The invention is industrially applicable, as it can be used at water and sewer stations, as well as immediately before the supply of drinking water to residential and industrial buildings.

 The drawing schematically shows a device for disinfecting water, a longitudinal section.

 A device for disinfecting water contains a confuser 1, a neck 2, a diffuser 3. In the central part of the device (along its axis), a profiled needle 4 is installed with the ability to rotate.

 The needle 4 has a turbine 5, consisting of blades 6 mounted on a profile needle 4.

 The device contains a tee 7. The left part of the tee 7 is connected to the outer part of the periphery of the diffuser 3, the right part of the tee 7 is closed by a seal 8 with a through hole 9 for passage of the profiled needle 4 and the installation of bearings 10, and the lower part of the tee 7 for the removal of disinfected water. The profiled needle 4 is connected to the electric motor 11 by means of a coupling 12. The turbine 5 is located in the chamber 13 of the tee 7. The tee 7 has threads 14 in the right, left and lower parts. The confuser has a thread 14 for installation on the pipeline to be treated water.

 Vacuum gauges are installed on the neck 2 and chamber 13 of the tee 7. The coupling 12 has gaskets 16 (the thickness of the gaskets 16 may vary), and bolts 17 are used to connect the profiled needle 4 to the shaft of the electric motor 11.

 The position of the electric motor 11 is fixed in the holes (grooves) 18 with the help of bolts 19.

 A device for disinfecting water works as follows. Source water under pressure is supplied to the device. The confuser 1 smoothly narrows the flow of water, and the diffuser 3 smoothly expands it. In the neck 2, the water velocity increases, and the absolute pressure drops, that is, a vacuum or vacuum is created.

 In the neck 2, cavitation begins, which is the region of local boiling of the liquid, and the subsequent vapor condensation. In the diffuser 3 there is a gradual increase in pressure in the water stream and the condensation of vapor bubbles begins, which occurs at a considerable speed. At the time of completion of condensation (collapse of the bubble), local shocks occur, that is, significant pressure increases at individual points in the water. In this case, the shells of bacteria, viruses, helminth eggs and other pathogenic microorganisms are destroyed, and they die, that is, water is disinfected.

 By changing the position of the profile needle 4 using the thickness of the gaskets 16 installed in the coupling 12, or by the position of the electric motor 11 in the guide holes (grooves) 18, the cross-sectional area in the neck 2 changes.

 When reducing the cross-sectional area in the neck 2, the flow rate increases, and consequently, the absolute pressure drop without changing the pressure of the source water in front of the device. With a significant change in water temperature (the water temperature of surface sources depends on the season of the year, and the temperature of the wastewater can be constant), the electric motor 11 is turned on. When the blades 6 of the turbine 5 rotate, the flow rate in the neck 2 increases, which makes it possible to increase the absolute pressure drop, i.e. create more deep vacuum, without changing the pressure and heating the source water in front of the device.

 The installation of a DC motor 11 allows you to change the frequency of rotation of the turbine 5 with blades 6, which allows you to adjust the magnitude of the absolute pressure drop in the neck 2 of the device by changing the flow rate.

 The beginning of cavitation in the device and its change is determined using vacuum gauges 15.

 The invention improves the efficiency, reliability of operation of the device and expand its scope (to reduce the consumption, for example, of chlorine, ozone for disinfection of wastewater, water for domestic and drinking water supply at waterworks and for repeated disinfection of water without reagents immediately before it is supplied to consumers for the possibility of repeated bacterial contamination in a worn-out, distribution water supply network) than the devices described in [1, 2].

Sources of information
1. Information leaflet 213-89 "Method for the disinfection of wastewater in the cavitation field" - Chelyabinsk interdisciplinary territorial TSNTI, 1989.

 2. Patent of the Russian Federation 2049072, MKI 6 C 02 F 1/34, 1995, Bull. 33.

Claims (2)

 1. A device for disinfecting water, containing a confuser, a neck, a diffuser, a profiled needle installed in its central part with the possibility of its movement along the diffuser, characterized in that the device contains a tee, and the profile needle is equipped with a turbine consisting of blades mounted on the profile the needle, and the needle has the ability to rotate, while the turbine is located in the chamber of the tee, the left part of the tee is connected to the outer part of the periphery of the diffuser, the right part is closed seal with a through hole in the central part for the passage of the profiled needle and the installation of bearings, and the lower part is used to drain water.  2. The device according to claim 1, characterized in that the shaped needle is connected using a coupling with an electric motor using alternating or direct current.