RU232221U1 - Portable demountable filter housing for coal mine dust suppression device - Google Patents

Abstract

The utility model relates to the coal industry, in particular for dust suppression in a coal mine. A portable detachable filter housing for a device for dust suppression in a coal mine includes a housing made of a pipe, to which a quick-release flange is welded on one side, closed by a lid with an opening. A coupling is welded to the lid. On the other side of the pipe, a hollow rod with holes for passing water is inserted into the pipe. A tube is welded into the pipe, designed to clean the inner surface of the pipe from contamination using water. A metal slot filter cartridge is installed on the hollow rod with holes for passing water. A ball valve is installed in the tube for turning off/on the water flow from the fire-sprinkler pipeline to the portable detachable filter housing. A ball valve is installed in the coupling welded to the cover of the quick-release coupling flange for turning on/off the water flow to wash away contamination from the surface of the metal slot filter cartridge obtained by winding triangular steel wire onto steel guides. The wire is welded to the steel guides at each contact point. The wire winding pitch is 0.05 mm. The triangular wire forms a smooth filtering surface with grooves that diffusely expand in the direction of filtration. The support elements form a rigid frame, the width of the filtering surface slit is 0.05 mm. The technical result is achieved - ensuring the ability to wash the filter cartridge from contamination with a water flow and, as a result, eliminating the need for periodic replacement of the filter element. 2 fig.

Description

The field of technology to which the utility model relates.

The utility model relates to the coal industry, to a dismountable portable water filter housing. The water filter housing is used as part of the equipment of the UPMVT RSDF.612451.001 device for dust suppression in a coal mine.

State of the art

The closest analogue of the presented utility model is a portable detachable filter housing, presented in the Russian Federation patent No. 2678218 and the Russian Federation patent for utility model No. 198250 of the UPMVT device RSDF.612451.001. This detachable portable filter housing is a section of thick-walled hot-deformed pipe, to which a quick-release flange is welded on one side, the flange is closed with a lid with an opening, to which a coupling is welded, on the other side of the pipe a plate with a round opening in the center is welded to it, through which a hollow rod with openings for passing water is inserted into the pipe and then welded to the plate, on one side of the rod a cylindrical plug with an external thread is welded, on the other side a hollow sleeve with an external thread is welded, a special nut is screwed onto the rod plug, which fixes the filter element with a conditional filtration fineness of 5 microns, made of textured propylene or polyamide threads, which is put on the rod inside the pipe. To clean the inner surface of the pipe and the outer surface of the filter element, made of textured polypropylene or polyamide threads, from contamination using water or compressed air, a thick-walled tube with a DN 12 quick-release plug is welded into the pipe.

A significant drawback of the said design of a portable dismountable filter housing, presented in Russian Federation patent No. 2678218 and Russian Federation patent for utility model No. 198250, is the need for periodic replacement of the filter element, made of textured propylene or polyamide threads, once every 120 hours of continuous operation, subject to compliance with the requirements for the composition of water in the fire-sprinkler pipeline of a coal mine, which leads to labor costs during operation.

The presented utility model of a portable detachable housing-filter for water is aimed at achieving a technical result consisting in the fact that during the operation of the portable detachable housing-filter, periodic replacement of the filter element is not carried out, due to the installation of a metal slot filter cartridge on a hollow rod, which is washed with a stream of water when contaminated. Disclosure of the essence of the utility model.

The metal slot filter cartridge is obtained by winding triangular steel wire on steel guides. The wire is welded to the steel guides at each contact point. The wire winding pitch is 0.05 mm. The triangular wire forms a smooth filtering surface with grooves that diffusely expand in the direction of filtration. The supporting elements form a rigid frame. The width of the filtering surface slit can vary within 0.05 mm. The dimensions of the metal slot filter cartridge are similar to the dimensions of the filter element made of textured propylene or polyamide threads. The metal slot filter cartridge is installed in a portable detachable filter housing on a hollow rod with holes for water passage, instead of a filter element made of textured propylene or polyamide threads without changing the design. A DN12 ball valve is installed in the thick-walled tube of the portable dismountable filter housing, designed to clean the inner surface of the pipe and the outer surface of the filter element from contamination using water, instead of the DN 12 plug, to turn on/off the water flow from the fire-fighting and irrigation pipeline to the portable dismountable filter housing. A DN12 ball valve is installed in the coupling welded to the flange cover of the quick-release coupling to turn on/off the water flow to wash away contamination from the surface of the metal slot filter cartridge. When the water flow moves through the slots of the metal slot filter cartridge and further along the hollow rod with holes, the water is filtered due to a well-known principle in technology called the "Coberly effect". Due to the design of the wire made of a triangular profile, a filter bridge is formed over the adjacent sharp edges of the slit, consisting of particles smaller than the slit width, which keeps small and large particles from penetrating into the metal slot filter cartridge, forming an area that prevents clogging. With a significant accumulation of contamination particles on the surface of the metal slot filter cartridge, the water flow passing through the metal slot filter cartridge and further along the hollow rod with holes is significantly reduced, which leads to a decrease in the water pressure supplied to the manifold with hydraulic fogging nozzles and, accordingly, to the cessation of the operation of the hydraulic fogging nozzles. To clean the surface of the metal slot filter cartridge, a DN12 ball valve mounted in the coupling of the flange cover of the quick-release joint of the portable detachable filter housing is opened, as a result of which contamination is washed off from the surface of the metal slot filter cartridge by a stream of water passing through the filter housing.

After washing away the contamination from the metal slot filter cartridge, the DN12 ball valve mounted in the coupling of the flange cover of the quick-release connection of the portable dismountable filter housing is closed and the water flow passes through the slots of the metal slot filter cartridge and further along the hollow rod with holes, without replacing the filter element. Brief explanation of the drawings.

Fig. 1 shows a schematic representation of a portable disassemblable water filter housing assembled with the housing of the control unit of the UPMV RSDF.612135.001-01 device with an installed metal slot filter element and a ball valve; Fig. 2 shows a schematic representation of a metal slot filter element, a schematic representation of section 1-1, a schematic representation (View A) enlarged, a schematic representation (view B):

1. Control unit housing RSDF.614337.001-04.

2. A thick-walled tube of a portable, detachable filter housing, designed to clean the inner surface of the filter housing from contamination.

3. Ball valve with quick coupling DN 12 DIN EN 853 with a nominal diameter of 12 mm for shutting off/on the water flow from the fire sprinkler pipeline into a portable detachable filter housing.

4. High-pressure hose DN 12 DIN EN 853 with metal braiding for draining water when washing a metal slot filter.

5. High-pressure hose DN 12 DIN EN 853 with metal braiding for supplying water to a manifold with hydraulic mist nozzles.

6. Portable detachable water filter housing RSDF.061152.003-04.

7. Metal slot filter cartridge with a diameter of 65 mm and a length of 254 mm.

8. Hollow rod with holes RSDF.306571.001.

9. Ball valve with quick coupling DN 12 DIN EN 853 with a nominal diameter of 12 mm for turning on/off the water flow for flushing the surface of the metal slot filter cartridge.

10. Flange of a metal slot filter with a diameter of 65 mm made of corrosion-resistant steel.

11. Stainless steel guide rail.

12. Steel wire of triangular cross-section made of corrosion-resistant steel. Implementation of a utility model.

To reduce the time spent on replacing the filter element of the UPMVT RSDF.612451.001-01 device, the filter element made of textured propylene threads is replaced with a metal slot filter cartridge (7) Fig.2 with a filtration degree of 50 μm. The dimensions of the metal slot filter cartridge are identical to the dimensions of the filter element made of textured propylene threads. A ball valve (3) with a DN 12 DIN EN 853 quick-release coupling was installed in the tube (2). During the operation of the UPMVT RSDF.612135.001-01, water entered the portable detachable water filter housing (6) RSDF.061152.003-04 through the ball valve (3) with a DN 12 DIN EN 853 quick-release coupling, then was cleaned through the filtering surface of the metal slot filter cartridge (7) and then along the hollow rod with holes (8), exited the water filter housing RSDF.061152.003-04 through the high-pressure hose (5) DN 12 DIN EN 853 to the manifold with hydraulic fogging nozzles. After the hydraulic mist-forming nozzles on the manifold stopped working due to clogging of the metal slot filter cartridge (7), the ball valve (9) with a DN 12 DIN EN 853 quick-release coupling was opened. After the ball valve (9) with a DN 12 DIN EN 853 quick-release coupling was opened, the water flow was directed through the ball valve (3) with a DN 12 DIN EN quick-release coupling into the ball valve (9) with a DN 12 DIN EN quick-release coupling and discharged, as a result of which the contamination was washed away from the surface of the metal slot filter cartridge (7) by the water flow. After the outer surface of the metal slot filter cartridge (7) was washed, the ball valve (9) with a DN 12 DIN EN 853 quick coupling was closed and the water flow was directed through the metal slot filter cartridge (7) and then along the hollow rod with holes (8), along the high-pressure hose (5) DN 12 DIN EN 853 to the manifold with hydraulic mist-forming nozzles without replacing the filter element.

Literature

1. Patent of the Russian Federation No. 2678218.

2. Patent for utility model of the Russian Federation No. 198250.

Claims (1)

A portable dismountable filter housing for a dust suppression device in a coal mine, comprising a housing made of a pipe to which a quick-release flange is welded on one side, closed by a lid with an opening to which a coupling is welded, on the other side of the pipe a hollow rod with openings for passing water is inserted into the pipe, a tube is welded into the pipe intended for cleaning the inner surface of the pipe from contamination using water, characterized in that a metal slot filter cartridge is installed on the hollow rod with openings for passing water, a ball valve is installed in the tube for turning on/off the water flow from the fire-sprinkler pipeline to the portable dismountable filter housing, a ball valve is installed in the coupling welded to the cover of the quick-release flange for turning off/on the water flow for washing away contamination from the surface of the metal slot filter cartridge obtained by winding triangular steel wire on steel guides, wherein the wire is welded to the steel guides at each contact point, the wire winding pitch is 0.05 mm, the triangular cross-section wire forms a smooth filtering surface with grooves that diffusely expand in the direction of filtration, the supporting elements form a rigid frame, the width of the filtering surface gap is 0.05 mm.