RU2011401C1 - Dust collecting device - Google Patents

Abstract

FIELD: air cleaning. SUBSTANCE: dust-collecting device has housing with dust collectors, inlet branch pipe and settling chambers with height increasing in direction of flow. Outlet trunk is arranged on top of last chamber in direction of air flow. Device has two partitions perforated over entire length. Holes in first partition are arranged over its entire height in rows, in staggered order. Holes in second partition, like those in first partition, are made in upper part arranged over first partition. Inlet branch pipe is made in form of diffuser and is installed on top of first chamber. Summary area of holes in each chamber is 2.5 times less than cross-section area of chamber. EFFECT: enlarged operating capabilities. 2 cl, 2 dwg

Description

 The invention relates to the field of air purification from dry dust. In contrast to the capture of dust particles in precipitation chambers, which occurs under the action of gravity, the proposed technical solution is based on multiple purging of dusty air flow, which ensures cleaning efficiency with minimal chamber sizes. Dust collection chambers can be used in industrial production.

 The purpose of the invention is to increase the efficiency of purification of air and gases from suspended dust particles.

 In FIG. 1 and 2 schematically depict the proposed device.

 The device comprises a housing made of any building materials with smooth internal surfaces and partitions dividing it into three chambers 2, 5, 6. A pipe 1 supplying dusty air is made with a diffuser. Between the first 2 and second 5 chambers, rows of round holes 4 are staggered along the chambers. The same rows of round holes 4 are located at the top along the chambers 5 and 6. In each chamber below, along with them, dust collectors are located 3. The output shaft 7 is located at the top third chamber upstream.

 The operation of the device is as follows.

 Dusty air stream, cleaned from dust, is directed through the inlet pipe 1 with a diffuser into the chamber 2 from top to bottom. The diffuser reduces the speed of air, while part of the coarse dust, continuing the path, by inertia enters the dust collector 3 of the first chamber, and air perpendicular to the initial movement is evenly distributed over all round openings in the form of jets. The air speed in the holes increases, all the jets are perpendicular to the opposite wall of the chamber 5. The dust particles contained in the air are in contact with the wall of the chamber 5 and poured into the dust collector 3 of the second chamber, the air reflected from the wall turns upward towards the exit, combines with a number of higher jets and continues to be repeatedly purged in the air stream, all the time in contact with the chamber wall, and the continuously incoming air stream does not allow dust particles to fly away from Enki chamber and promotes directed movement of the wall in the dust receptacle. Passing through 8-10 such air curtains, all the air is completely cleaned of dust and this could finish the process of air purification before removing it into the atmosphere, and reduce the size of the dust collector chamber by one third, but to completely guarantee any air purification from dust fraction of the process of self-cleaning by blowing air jets-curtains is completely reproduced a second time. Air with a small speed of 1-1.5 m / s enters the top of the chamber 5 and through round holes between the chambers 5 and 6 is directed at an increased speed to the opposite wall of the chamber 6 and the purging process continues again. Completely purified air through the shaft 7 is released into the atmosphere.

 The ratio of the total area of the round holes to the cross-sectional area of the chamber is 2.5.

 Using the minimum blowing rates, this technical solution can also be used for efficient cleaning of flue gases from entrainment particles in boilers operating on natural draft. In this case, the chamber channel is located horizontally close to the wall of the hog, from which the flue gases enter the chamber channel from the rows of round openings in the form of jets, where the flue gases are cleaned from suspended particles by multiple purging while passing through the chamber channel along the route them to the outlet connected to the chimney, and not burnt particles of entrainment are poured into a hermetically sealed dust receiver located downstream along the channel. The total area of round holes is 2.5 times smaller than the area of the input cross section of the hog.

Claims (2)

 1. A dust collecting device comprising a housing with dust collectors, an inlet pipe and deposition chambers with a height increasing along the flow, and an outlet shaft is made at the top of the latter along the flow of the chamber, characterized in that, in order to increase the efficiency of the dust collection process provided by multiple purging of the cleaned air, it is equipped with two partitions perforated along the entire length, the holes in the first partition being located along its entire height, and the holes in the second partition in its upper her part, located above the first partition, the inlet pipe is made in the form of a diffuser and is installed at the top of the first chamber, and the holes in the partitions are staggered.  2. The device according to p. 1, characterized in that in each chamber the total area of the holes in comparison with its cross-sectional area is less than 2.5 times.

Images