RU24402U1 - ASPIRATION SYSTEM - Google Patents

Abstract

1. An aspiration system containing in series connected by air ducts devices for local dust extraction from technological equipment, a dust collecting device made in the form of a vortex inertial dust collector on counter swirling flows, and an exhaust fan, characterized in that each local dust extraction device is made in the form of a suction trap containing the inlet pipe, made in the form of a horn and tangentially connected to the housing of the suction-trap, consisting of two parts - lower, stationary fixed to the body of the desktop installation for generating dust production equipment and provided with a dust collector, and upper, which together with the outlet pipe is made rotatable about its vertical osi.2. The aspiration system according to claim 1, characterized in that the inertial vortex dust collector on counter swirling flows is equipped with dust-air flow flow regulators installed on the upper and lower entrances of the dust collector.

Description

The utility model relates to the metalworking and other industries, and can also be used to collect dust in tire factories, in operations of cleaning and grinding molds and in the areas of packing and dosing of bulk materials in the petrochemical industry.

A known aspiration system containing local dust extraction devices from technological equipment connected by air ducts to the inlet nozzles of the vortex inertial dust collector, the axial outlet of which is connected to the cavity of the electrostatic precipitator housing to which the exhaust fan is connected

(see the description of the invention to the USSR copyright certificate J42 1650262, IPC VOCh 9/00, publication 05/23/91).

The disadvantage of this aspiration system is the lack of suction efficiency, as well as the complexity of the design due to the presence of an electrostatic precipitator and high energy consumption.

The task to which this utility model is directed is to increase the efficiency of suction, reduce dust in the working area of technological equipment.

This is achieved by the claimed combination of features. The dryness of the utility model consists in the fact that the system contains suction; it is sequentially connected by air ducts to devices for local dust extraction from technological equipment, dust collecting; another device made in the form of a vortex inertial dust collector on counter swirling flows and an exhaust fan, each local device the dust suction is made in the form of a suction - trap containing an inlet pipe made in the form of a horn and tangentially connected to the body of the suction - trap (which is the first dull dust cleaning dusty air flow). The suction-trap body consists of two parts - the lower one, permanently fixed to the desktop housing for installing technological equipment that creates dust, and equipped with a removable dust collector and the upper one, which, together with the inlet pipe, is rotatable around its axis.

In addition, the vortex and inertial dust collector on counter swirling flows, which is the second stage of system cleaning

Suction system.

aspiration, equipped with dust-air mixture flow regulators installed on the upper entries of the dust collector.

This improves the cleaning efficiency.

The essence of the utility model is illustrated by drawings, where in FIG. 1 shows an aspiration system, general view. In FIG. 2 trap suction device, top view in FIG. 3 is a sectional view of the AA device of FIG. 2.

The suction system contains a local dust suction device, the suction - trap 1 from the technological equipment 2, connected in series by air ducts 3 with a vortex inertial dust collector

4 on counter swirling flows, at the upper and lower entrances of which there are installed regulators 5 for the flow of dust-air mixture, and an exhaust fan 6.

Each local suction device for dust collection - suction trap 1 contains an inlet pipe 7, tangentially connected to the housing 8 of the trap suction, consisting of two parts. The lower part 9 is stationary mounted on the housing of the desktop 10 and is equipped with a dust collector 11.

The upper part 12 of the suction - trap 1 with the inlet pipe 7 fixed to it is made rotatable around its axis. The inlet pipe 7 of the suction - trap 1 is made in the form of a horn.

Technological equipment 2 creating dust is installed on the desktop 10.

The aspiration system works as follows.

Before starting work, the air flow controllers 5 on the dust collector 4 are set to the position corresponding to the operation mode. The inlet pipe 7 suction - traps 1 is brought to the place of work. Technological equipment 2, for example, a mold in tire production, is fixed on the working table 10. When dusting and grinding the molds with a grinding tool (not shown) metal dust is emitted. The dust and gas stream formed in the working zone enters through the inlet pipe 7 into the upper part 12 of the suction body 8 - trap 1, where it acquires rotational motion due to the tangential input. Dust particles, under the influence of centrifugal forces, are pressed to the inner surface of the suction casing 8 - traps 1, are sent to the lower part 9 of the casing 8. The main amount of dust (9095%) is emitted in the lower part 9 of the casing 8 and settles in the dust collector And, which can be made removable.

The remaining dust along with the air flow through the air duct 3 enters the second stage of cleaning in the dust collector 4, where it is subjected to additional cleaning, after which the exhaust fan 6 is removed into the atmosphere.

The proposed design of the aspiration system increases the efficiency of cleaning and significantly reduces dust in the working area of technological equipment. The presence of a rotary suction in the aspiration system - traps with a tangentially connected inlet pipe made in the form of a horn, allows you to remove the maximum amount of dust released during technological operations directly from the working area at the place of processing parts; this allows you to reduce the load on the next stage of cleaning, to eliminate clogging of the ducts during dust transportation, which increases the overall efficiency of the aspiration system, as well as its reliability and stability.

Air flow regulators allow you to set the most favorable and efficient mode of operation of the dust collector for the specific nature of the dust emissions, depending on the type of work performed and, accordingly, on the nature of the dust emitted. So, in the tire industry, when repairing molds, a part is cleaned up during which large metal dust is released, and when grinding a part, fine abrasive dust and large fibrous dust are released. During welding, gaseous emissions prevail. Therefore, the air flow regulators have several provisions corresponding to the above operating modes and ensure the removal of the optimum amount of air from the working area of the workpiece and the optimal speed of the dusty air stream at the inlet of the dust collector, necessary for more efficient capture of a particular type of dust.

The suction system is effective in various operations, including the processing of metal parts, and can effectively clean dusty air in several working areas at the same time.

From the patent holder.

General manager

LLC “Volgograd Association

Azarov V.N.

Claims (2)

1. An aspiration system containing in series connected by air ducts devices for local dust extraction from technological equipment, a dust collecting device made in the form of a vortex inertial dust collector on counter swirling flows, and an exhaust fan, characterized in that each local dust extraction device is made in the form of a suction trap containing the inlet pipe, made in the form of a horn and tangentially connected to the housing of the suction-trap, consisting of two parts - lower, stationary fixed to the body of the desktop installation for generating dust production equipment and provided with a dust collector, and upper, which together with the outlet pipe is made rotatable about its vertical axis. 2. The suction system according to claim 1, characterized in that the inertial vortex dust collector on counter swirling flows is equipped with dust air flow flow controllers installed on the upper and lower entrances of the dust collector.