RU2268770C1 - Vortex dust catcher - Google Patents

Abstract

FIELD: different branches of industry; equipment for gases purification from a dust.

SUBSTANCE: the invention is pertaining to the equipment for gases purification from a dust and may be used in various branches of industry in pneumatic transportation systems, pneumatic dust handling equipment, in aspiration. The vortex dust-catcher contains a body consisting of two cylindrical sections of different diameter and a conical section; an axial inlet of a dusty gas with a vortex generator and a deflecting washer; and also the located in the upper part of the body an axial branch pipe for withdrawal of the purified gas and a peripheral inlet of the secondary torrent with a vortex generator. The axial inlet of a dusty gas has a peripheral vortex generator with a tilt angle of the feeding branch-pipe equal to the tilt angle of peripheral inlet of the secondary torrent, and a profile of the cross-section of the deflecting washer is made in such a manner, that its maximal diameter lies in the plain of junction of the cylindrical sections of the body. The surfaces of a dusty gas inlet and the body are coated with the vibration damping a material. At that the ratio of the depth of the treated components to the depth of the layer of the vibration damping material is as 1:(2.5...4). The technical result of the invention is an increased effectiveness of separation of the particles with a small specific weight, improved reliability of the system operation, a decreased hydraulic resistance and the noise level of the dust-catcher operation.

EFFECT: the invention ensures an increased effectiveness of separation of the particles with a small specific weight, improved reliability of the system operation, a decreased hydraulic resistance and the noise level of the dust-catcher operation.

2 cl, 3 dwg

Description

The invention relates to techniques for cleaning gas from dust and can be used in various industries in pneumatic conveying systems, pneumatic cleaning, aspiration.

The closest technical solution to the claimed object is a vortex dust collector on.with. USSR No. 1526834, class 04 C 3/06, comprising a housing with an expanded lower part, in which a shell is arranged concentrically in the form of a truncated cone, with a large base facing upward, and an axial inlet of dusty gas with a swirl, a cowl and a bump washer located in the upper part of the housing, an axial nozzle for the output of purified gas and the peripheral input of the secondary stream with a swirl, the lower part of the body made in the form of two cones connected by large bases, with a larger base of the upper truncated cone, a larger base , the shells and the upper end of the axial inlet are located at the same level, and the axial inlet is equipped with an ejection nozzle forming an annular channel with its inner wall that communicates with the body cavity under the baffle plate.

The disadvantage of the prototype is the relatively low efficiency of dust collection due to the fact that the ejection nozzles are closed from the main stream by a conical screen.

The purpose of the invention is to increase the efficiency of separation of particles with a low specific gravity, reduce hydraulic resistance, increase the reliability of the system and reduce noise during the operation of the dust collector.

This is achieved by the fact that in the vortex dust collector containing a housing made of two cylindrical parts of different diameters and a conical part, an axial inlet of dusty gas with a swirl and a breaker washer, as well as an axial nozzle located in the upper part of the housing for outputting purified gas and a peripheral input of the secondary flow with a swirl, the axial input of dusty gas is made with a peripheral swirl without a cowl with an angle of inclination of the inlet pipe equal to the angle of inclination of the peripheral input of the secondary stream, and the profile the cross section of the baffle plate is made in such a way that its maximum diameter lies in the plane of connection of the cylindrical parts of the casing, and the dusty gas inlet surfaces and the casing are treated with vibration damping material, and the ratio of the thickness of the workpieces to the layer thickness of the vibration damping material is in the ratio 1: (2.5. ..four).

In Fig.1 presents a vortex dust collector, General view, in Fig.2 - section aa in Fig.1; figure 3 is a section bB in figure 1.

The vortex dust collector contains a housing made of two cylindrical parts of different diameters: the upper part 1 and the lower part 2 of a larger diameter, as well as a conical part 8, which is a dust collecting bin. The axial inlet 5 of dusty gas is made with a peripheral swirl 4 without a cowl with an inclination angle of the inlet pipe equal to the angle of inclination of the peripheral inlet 7 of the secondary flow, and the cross-sectional profile of the baffle plate 6 is made in such a way that its maximum diameter lies in the plane of connection of the cylindrical parts of the housing 1 and 2. The input surface of the dusty gas (4, 5, 7), the housing 1 and the pipe 3 for the outlet of the purified gas are treated with vibration damping material, and the ratio of the thickness of the processed parts to the layer thickness is vibration damping its material is in the ratio 1: (2.5 ... 4).

Vortex dust collector operates as follows.

The dust and gas flow enters through the inlet 7 at an angle to the axis of the housing 1 and, spinning under the action of tangentially directed centrifugal forces (see FIG. 2), moves downward in the housing 1. Toward it from below through the axial inlet 5 a dusty primary gas is supplied, which also swirls under the action of tangentially directed centrifugal forces (see figure 3) in the same direction as the downward secondary flow. In this case, dust particles are thrown to the walls of the housing under the action of centrifugal forces 1. The swirling secondary stream, encountering the baffle plate 6, partially unfolds, interacting with the primary stream coming from the axial inlet 5. Dust particles with greater inertia are separated from the stream when it turning at the baffle plate 6 and through the gap between it and the walls of the housing 1 on the demarcation line of the cylindrical parts 1 and 2 fly into the hopper 8. This contributes to the optimal interaction of the swirling stream of the primary stream with NIS a swirling secondary stream and increasing the efficiency of dust collection by returning dust particles with a low specific gravity to the hopper. The implementation of the apparatus body with processed vibration damping material with a ratio of the thickness of the workpieces to the layer thickness of the vibration damping material, which is in the ratio 1: (2.5 ... 4), allows to reduce the vibroacoustic environment during dust collection.

The proposed device is reliable in operation and operation due to the simplification of the design, as well as low noise.

Claims (2)

1. A vortex dust collector comprising a housing made of two cylindrical parts of different diameters and conical parts, an axial inlet of dusty gas with a swirl and a swash plate, and also an axial nozzle located in the upper part of the body for outputting purified gas and a peripheral inlet of the secondary stream with swirl, characterized in that the axial input of dusty gas is made with a peripheral swirler with an angle of inclination of the inlet pipe equal to the angle of inclination of the peripheral input of the secondary stream, and the cross-sectional profile the washers are designed in such a way that its maximum diameter lies in the plane of connection of the cylindrical parts of the housing. 2. The vortex dust collector according to claim 1, characterized in that the dusty gas inlet surfaces and the body are treated with vibration damping material, the ratio of the thickness of the workpieces to the layer thickness of the vibration damping material being in the ratio 1: (2.5 ÷ 4).

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