NL1044011B1 - Combined vacuum cleaner/humidifier for low-dust working during the dumping of crushed stone and ballast - Google Patents

Abstract

A simple, compact and efficient high-effective combined vacuum cleaner/humidifier installation and method, to prevent (fine) dust from 5 escaping to the environment during the dumping of stones, sand, gravel, ballast, granite, etc. The dust is extracted during this process and caught without the use of (dust) filters and without the use of suction equipment with moving parts. This prevents inhalation of the (fine) dust by humans and animals in the vicinity of the landfill.

Description

Combined vacuum cleaner/humidifier for low-dust working during the dumping of crushed stone and ballast SYSTEM DESCRIPTION General: With the installation and working method described below, a lot of dust can be prevented from entering the air during the dumping of crushed stone and ballast, for example for the road construction, If dust is released into the air during dumping, this can be harmful to the health of people who are in the vicinity of these dumping activities. Especially if quartz occurs in the crushed stone and/or ballast, it is especially harmful, because the very fine quartz particles can penetrate very deep into the lungs, and can then cause lung cancer and/or reduction of lung function in the long term.

During dumping, the dust is formed as it descends into the hopper. The surface of the crushed stone particles or ballast parts touches the surface of other crushed stone particles or ballast parts with high dynamic force and high mutual point load pressure during the descent into the funnel. This crushes and damages the crushed stone or ballast, and a lot of dust is created in the funnel, especially in hot weather. During dumping, all that dust comes out together with the crushed stone or ballast. The light and very fine particles then become airborne and can be inhaled by people in the vicinity of these landfill operations.

At the bottom of the hopper is a rectangular chute through which the crushed stone or ballast must fall before the crushed stone or ballast comes out.

The Installation described here is attached to the outside of that rectangular chute. The basic element (fig. 01 and 02) consists of an M-shaped tube. The center leg is equipped with a water jet (pos. 3). The waterjet is supplied with water through a pipe (see item 1). The top tube (pos. 2) and the down tube (pos. 2) are funnel-shaped. The center tube (pos. 5)

is cylindrical. The water jet (pos. 3) sprays atomized water under high pressure from the center tube (pos. 5) in the direction (pos. 8) against the crushed stone or ballast that falls down right next to the center tube in the direction (fig. 3, pos. 8). As a result, the dust that is on the crushed stone or ballast is bound with the water, so that the dust cannot become airborne afterwards. However, not all dust can be caught by the high-pressure water spray jet. As a result, dust can still remain in the air. Because water is sprayed out under high pressure through the center tube in the direction (pos. 8), a lot of air is sucked in through the top and bottom tube (pos. 2) in the direction of the center tube (pos.5) With that air, many free dust particles are also sucked in that are still in the air in the chute. Those free dust particles are then forced to mix with the water jet in the center tube (pos. 5), so that these free dust particles are also caught by the water and can no longer end up in the air. Part of the mist sprayed out from the center tube (pos. 2) in the direction of (pos. 8) will be sucked up again through the top tube and down tube (pos. 2) towards the center tube (pos. 5}, so that the mist partly circulated, and will be sprayed/sucked up several times along the crushed stone or ballast and through the M-pipe, creating several fast cyclones in the rectangular chute (fig. 3 and 4 pos. 9) with circulating air and water spray. As a result, less water is needed.The water with the bound dust particles then falls down under gravity together with the crushed stone or ballast (fig 3. Pos 6).

To improve/enhance the effect even further, the rectangular chute (fig. 3 and 4 pos. 9) is fitted with several base elements, both behind and opposite each other, so that the dust and the crushed stone or ballast are removed from all directions. attacked. A dust particle cannot hide here behind a piece of crushed stone or a piece of ballast. (fig. 3 and 4)

Claims (2)

CONCLUSIONS 1. A simple and compact, high-effective combined vacuum cleaner/humidifier installation, with which harmful dust can be captured, without the need for a separate dust filter and expensive air compressor for air movement, with the characteristic that use is made of the high-pressure water sample to move and keep the air for dust extraction moving. 2. Installation to force free-floating dust into contact with water, so that the dust can be captured from the air, with the feature that the air is sprayed with water in a duct or stori chute in which the dust moves in one direction. moved, through blow and suction openings in the duct or duct wall, circulated several times to capture the dust from the air, reducing the need for water, without the need for an air compressor.