SU1293327A1 - Muffler of mining machine - Google Patents

Abstract

The invention relates to mining and allows for greater noise blocking by creating a rotating membrane in the working area. Tangentially to the housing (K) 1 of the silencer, there is an inlet nozzle 2. Inside K 1 there is a swirler 3, made in the form of several cylinders connected to each other (C) 4. On their side surface are tangential slits 5 whose axes are located in the longitudinal plane, perpendicular axis of the muffler. At the same time, C 4 is made with different dielectric permeability, decreasing in the direction of the condensate collection tank 13 with the drain pipe 14. Moreover, K 1 is tightly connected to a cover 6 made of two plates (P) 7 and 8, installed with a gap. In each P 7 and 8 there are inclined exhaust channels 11, which are oriented in opposite directions relative to the axial diametral plane. They are located symmetrically relative to the longitudinal plane, perpendicular to the axis of the silencer and passing through the middle of the gap between P 7 and 8. The exhaust gas flow through pipe 2 enters the C 4. Particles form a gas-liquid near-wall layer, coagulate and flow into the tank 13. Jets gas, passing through the gap between P 7 and 8, colliding with each other, jamming noise. 2 hp ff, 3 ill. (С (Л ГЧЭ с ОО 00 ю

Description

The invention relates to the mining industry, in particular to mufflers of mining machines.

The purpose of the invention is to increase the efficiency of noise suppression by creating a vrash, ayush, and its membrane layer in the working area.

FIG. 1 shows the proposed muffler, cross section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows the node I in FIG. one.

The silencer of a mining machine includes a housing 1 with an inlet pipe 2 installed tangentially to it. Inside the housing 1 is mixed, with an eccentricity about its axis, a swirler 3, made in the form of several matched hollow cylinders 4, on the side surface of which are tangential w, clear slots 5 directed towards the gas flow. The swirl cylinders 4 are made of a dielectric of different permeability, decreasing to the base of the silencer, for example plexiglass, ebonite, fluoroplastic.

The housing 1 is hermetically connected to the lid b, which is made of two plates 7 and 8, which are interconnected with a gap, each plate being made in the form of a metal base 9 with sound absorbing material 10 attached to it.

In the cover b there are exhaust channels 11, and in the plate 8 they are made relative to the vertical plane of the device converging, and in the plate 7 - diverging. In addition, the sound-absorbing material has end holes 12 to increase the curvature and area of the plates 7 and 8.

In the lower part of the housing 1, a tank 13 is installed for collecting condensate with a drain pipe 14.

The silencer works as follows. Exhaust flow with significant

The content of oil aerosols enters the muffler through the inlet tangential nozzle 2, twists and enters the cavities of the cylinders 4 through the tangential slots 5. At the same time, the particles of impurities are charged by the triboeffect and form a rotating gas-liquid near-wall layer (barrier), which carries out the initial killing noise. In this case, the charged particles acquire a rotational motion and, due to the difference in the di

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electrical permeability 1; the cylinders 4 coagulate intensively and drain into the tank 13. Then the stream of exhaust air from the swirler expands, expands, loses its speed of movement and then, colliding with the sound-absorbing material 10, is distributed through the exhaust channels 11 and the blind The openings 12 of the plate 7 of the cover 6 achieve additional suppression of noise, after which the jets of exhaust gas enter the gap between the plates 7 and 8 of the cover 6, where, colliding with each other, the noise is additionally silenced and the smallest impurities remaining and a stack of air is deposited in the blind holes 12 and the capillaries of the sound-absorbing material 10 of the plate 8.

Claims (3)

1. A silencer of a mining machine, comprising a housing with its dielectric swirler placed inside, a lid with exhaust channels, an inlet nozzle and a condensate collection tank with a drain nozzle, different to TeN, which, in order to increase the efficiency of g / ear noise, by creating in the working area rotating membrane layer, swirl made in the form of sequentially installed, coaxial, hollow cylinders, on the side surface of which tangential slit slots are made, the inlet pipe is set tangentially away sheniyu to the muffler housing at IT'S: v1 axis of gap slots disposed in the longitudinal plane perpendicular to the axis of the muffler, and the muffler inlet pipe axis oriented in the same direction with respect to the muffler axis. 2. A silencer according to Claim 1, characterized in that hollow cylinders are made with different dielectric constant, the value of which decreases towards the condensate collection tank. 3. The muffler according to claim 1, characterized in that the lid is made in one of two plates installed with a gap, and the exhaust channels in each plate are inclined, oriented in opposite directions relative to the axial diametral plane and arranged symmetrically with respect to the pro-jet plane, perpendicular to the ; a silencer and a cover passing through the middle of the gap between the plates. Y //// V / 777 VyVI IVy) d IKXXl hippg pppppppy // ///// j Z lt ABOUT)( | | G fWl | At RSU1 RSU ) d IKXXl ppg Y (CLY CLL 1UG nnnnfi pippppi Duinn A -A . g X ii Fig.Z Editor T. Miteiko Order 357/33 VNIIPI USSR State Committee for Inventions and Discoveries  l 13035, Moscow, Zh-35,. Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Compiled by A. Tolstoy Tehred I. VeresKorrektor O. Lugova Circulation 455 Subscription