RU2010612C1 - Crit catcher - Google Patents

Abstract

FIELD: cleaning of water. SUBSTANCE: grit catcher has cone housing 1 with vertical slots in its inner surface, turbine 3 with hollow shaft 4. Disk 10 is disposed in lower part of shaft 4, which is provided with water-intake windows 9 and perforations 5 extending in helical path at the level above base of screw turbine 3. Vertical slots 2 are in communication with collector 17 to provide conveyance of slit primarily separated from flow and small quantity of water into wasteway channel 18. Additional amount of slit is centrifuged under the action of screw turbine 3 and urged into wasteway channel 18. Prevailing amount of clarified water penetrates through perforations 5 and windows 9 into tubes 4 and further into clear water channel 15. Additional amount of clarified water is delivered through opening 11 in inclined disk 10 and through widened end 14 of clean water channel 15. EFFECT: increased efficiency and wider operational capabilities. 2 dwg

Description

 The invention relates to hydraulic engineering, and in particular to devices for cleaning water from sediment.

 Known turbocyclone (a.s. USSR N 367895, class B 04 C 3/00, B 04 C 5/12, 1970), including a cylindrical housing, a rotor, a turbine with radially vertical blades, inlet and outlet pipes and exhaust a pipe, in which, in order to increase the separation ability of the turbocyclic, the rotor is made in the form of a multi-pass screw, in the lower part of which there is a turbine, and on the inner cylindrical surface of the casing a cylindrical insert with a helical groove forming a spiral channel with a helical surface of the rotor is fixed.

The disadvantages of the known device:
- sediment particles of transverse size, close to or greater than the transverse size of the helical space formed by the inner surface of the helical groove of the cylindrical insert and the helical surface of the rotor, block the spiral (transport) channel and disable the known device;
- to bring into rotation the rotor of a known device by means of a pulley, energy costs are required.

 Closer in technical essence to the proposed device is a trap (see the journal "Engineer", 1990, N 12, p. 10-11), mounted on a chimney, in the lower part of which there is a window for the entrance of flue gases into the internal the cavity of the device, and in the upper part there is a window for their exit from the internal cavity, in which spiral guides for the passage of flue gases are made on the central pipe and in the lower part of which a heat is arranged for pouring and removing ash, while a rotary one is made between the windows in the central pipe gate

The disadvantages of the known device are:
- the need for manual adjustment of the rotary gate, namely - at the time of the kindling of the boiler, when the smokestack of the chimney is small, the gate is opened for the passage of flue gases directly through the chimney. As the draft increases, the gate is closed for the passage of flue gases through the internal cavity of the known device;
- the impossibility of removing ash through estrus from the internal cavity of a known device by self-propelled, i.e., the need to create (with the help of energy costs) removing efforts;
- the inability to directly use the known device in order to purify water from sediment, associated with the need to move the cleaned agent (in the known device - flue gas) from the bottom up, because with a similar direction of movement of the purified water, heavy sediment fractions are influenced by gravity, falling down, they will clog the passage of the central pipe. In addition, for the supply of purified water from the bottom up, additional energy costs will be required in order to organize the corresponding pressure values.

 The purpose of the invention is improving the efficiency and quality of purified water.

 This goal is achieved by the fact that in the sand gravel box containing the housing, in the cavity of which a screw turbine, rotation bearings, crosses, divider, collector with a discharge channel, a supply channel and a channel of clean water are coaxially mounted, the turbine has a hollow axis — a pipe equipped with holes, made in a spiral base of the turbine, and its lower part is equipped with a perforated inclined disk, above which water intake windows are made, while in the inner cavity of the conical body there are made vertical grooves communicated with lecturer.

 This embodiment of sand gravel allows, firstly, through the action of the pyramidal divider, to produce at the entrance to the device primary separation of sediment from the main water flow and their direction to the periphery; secondly, under the action of centrifugal forces developed by a rotating screw turbine in the form of a screw, and due to the influence of gravity, to ensure efficient transport of the bulk of sediment together with the wash water along the grooves through the funnel-shaped collector into the discharge channel; thirdly, the main attraction of clarified water through the holes above the base of the screw turbine into the pipe and into the channel of clean water; fourthly, the entrainment of part of the clarified water through the holes in the inclined disk into the widened end of the pure water channel and then into the channel itself; fifthly, the creation of suction forces in the pipe due to the vacuum created by the flow of clarified water flowing around and flowing past the lower end of the pipe located inside the expanded end of the clean water channel.

 In FIG. 1 shows a sand gravel trap, a longitudinal section (with an isometric image of a screw); in FIG. 2 is a section AA of FIG. 1.

 The sand gravel box contains a screw turbine 3 mounted coaxially with a conical body 1 with vertical grooves 2 on the inner surface and made in the form of a screw mounted on a pipe 4 with perforation holes 5 arranged in a spiral above the base of a screw turbine 3 mounted on a crosspiece 6 with a rotation support 7 and a pyramidal divider 8, and the lower part of the turbine 3 is equipped with water intakes 9, below which an inclined disk 10 with holes 11 is fixed and a rotation support 12 mounted on the crosspiece 13, mounted on the extension Hinnom end 14 of the duct 15 of pure water, the housing 1 at the top has a supply channel 16, and the lower part of its ends a funnel-shaped collector 17, communicated with the discharge channel 18.

 Sand gravel works as follows.

 Water with sediment entering through the inlet channel 16 into the internal cavity of the sand-gravel box housing 1, acting on the spiral guides of the screw turbine 3, rotates it on the rotation supports 7 and 12, mounted on the crosses 6 and 13. When entering the sand gravel box by means of a pyramidal divider 8 primary separation of sediment from the water stream is carried out, which due to the action of gravity is transported together with a small amount of wash water along the grooves 2 through a funnel-shaped collector 17 in the discharge channel l 18. Under the action of centrifugal forces developed as a result of rotation of the screw turbine 3, an additional amount of sediment, together with a small amount of water, is discarded to the periphery and, due to the action of gravity, enters along grooves 2 through a funnel-shaped collector 17 into the discharge channel 18.

 Under the action of the pressure created by the rotating screw turbine 3 in the internal cavity of the sand-gravel box 1, the bulk of the clarified water through the perforation holes 5 and the intake windows 9 penetrates into the pipe 4 and then into the channel 15 of pure water. An additional amount of clarified water under the influence of pressure enters through the holes 11 in the inclined disk 10, through the expanded end 14 of the channel 15 of pure water into this channel. When pure water flows around the lower (open) end of the pipe 4 of a screw turbine 3, a vacuum is created in this pipe and thanks to it additional suction forces are formed to increase the clarified water through the holes 5 and the windows 9 inside the pipe 4 and further into the channel 15 of pure water.

 The economic efficiency from the use of sand gravel trap is determined by increasing the efficiency and quality of water treatment due to physically justified - as a result of the constructive use of the naturally acting gravitational force and the induced centrifugal force - separation of sediment from the vast majority of the water flow. (56) Copyright certificate of the USSR N 367795, cl. B 04 C 3/00, 1970.

Claims (1)

 PESKOGRAVILOVKA, including a casing in the cavity of which a screw turbine, rotation bearings, crosses, a divider, a collector with a discharge channel, a supply channel and a channel of clean water are coaxially mounted, characterized in that, in order to increase the efficiency and quality of the purified water, the lower part of the turbine is provided perforated inclined disk, the axis of the turbine is hollow and with perforation made in a spiral base of the turbine, and water intake windows located above the inclined disk, while the inner surface of the conical body The mustache is made with vertical grooves communicated with the collector.

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