SU1375281A1 - Arrangement for separating loose material from air flow - Google Patents

Abstract

This invention relates to the pneumatic transport of bulk materials and can be used in devices designed to separate bulk material or dust from transported air. The device makes it possible to increase the efficiency of trapping bulk material and dust from the stream by slowing it down and turning it ON 180 °. This is achieved by the fact that the precipitation elements located in two sections are made in the form of frames with grids installed in partitions that allow springs to move to the flow axis in the first section and 2/3 of the flow in the second section. The passage of a part of the flow through the grids of the frames and movement along the frame with the intersection of the flow results in a deceleration of the entire flow, with large particles of material falling out of the flow. When particles flow along the grids, a tangential force arises, it sets in a knight, the frame moves to the center of the flow, blocking it. In the second section, due to less rigid springs, the frames are moved so that they cover the entire cross section of the section, which contributes to a better separation of dust. 1 hp f-ly, 3 ill. (L

Description

This invention relates to the pneumatic transport of effluent materials and can be used in devices designed to separate bulk material or dust from the carrier air.

. The purpose of the invention is to increase the efficiency of captured bulk solids and drums,

Figure 1 shows a diagram of the device, top view; Fig. 2 shows the direction of movement of the crashing stream; on fig.Z - section aa in figure 1

The device for separating the bulk material from the air flow consists of a housing 1 divided into two coarse and fine chambers in which partitions 2 are mounted. In the partitions there are sedimentation elements made in the form of frames 3 with grids 4 attached to the body by springs 5 .

Case 1 is a welded metal structure. In the lower part of the body there are hinged but opening bottoms for unloading bulk material (not shown).

Partitions 2 are installed along the chambers with rounded at the end of the coarse chamber and at the beginning of the fine chamber. In partitions slotted holes 6 are cut for installations of frames 3 with grids 4. Partitions are a rigid frame of the installation.

Frame 3 is a rectangular welded structure of the corner, inside which is fixed a metal mesh 4 with a certain cell size. The frames are set at an angle of 30 to the axis of the chambers with a slope in the direction of movement of the air mixture. In the upper and lower parts of the frame, stops 7 are mounted at the calculated distance of the scientific research institute from the free end. The frames are fixed to the housing wall by means of compression springs 5 and installed in a staggered order at a distance of 100-200 mm so that the central part it is free and does not intersect in the usual position, and in the fine cleaning chamber the frames overlap the whole section.

The device works as follows.

The aerosol at a certain pressure and speed enters the chamber

Q

50

five

0 s

Q

0

five

rough cleaning along arrow B. In this case, part of the flow passes in the central part until rounding at the end of it and, turning from 180 to 180, enters the fine cleaning chamber. The main part of the stream falls on the grid frames and is divided into separate streams. A part of these streams passes through the grid cells, leaving the material on the grids, while the other part, slipping along the grid and the center of the flow, is twisted with the intersection of oncoming flows. The passage of a part of the flow through the grids and movement along the frame with the intersection of the flow leads to the inhibition of the entire flow, with large particles of material falling out of the flow. As part of the flow moves along the grids, a tangential force arises, causing the frame to move to the center of the flow, overlapping it. At the same time, the springs 5 are stretched. At the end of the transportation, the springs are compressed, causing the frames to take up the initial position. The frame returns due to the compression of the springs abruptly with the impact of the stops 7 into the partition 2. Upon impact, the frame is shaken, due to which the material deposited on the grid falls to the bottom of the device. If necessary, pages: the frame can be cast several times during transportation, periodically the flow rate changes periodically.

"

In the fine cleaning chamber the entire section is blocked. At the same time one frame overlaps 2/3 of the section. The design is made taking into account the fact that the stream with a lower speed and with the smallest particles of material (dust) enters the fine cleaning chamber. Therefore, the dimensions of the grid cells must be significantly smaller than the cells of the coarse chamber. When moving the air in the fine cleaning chamber in the same way as in the rough cleaning chamber, the tangential forces cause the frame to move in the direction of the center of the flow, which causes the frame 2/3 of the chamber to overlap, which is facilitated, for example, by the increased frame size with mesh. Taking into account the lower speed and pressure of the flow in the fine cleaning chamber, the compression springs 5 should be installed less rigid than in the rough cleaning chamber. Inserting the frame after the end of the defense

also occurs due to the action of the springs.

The purified air is expelled from the device through the fine cleaning chamber in the direction of arrow B and released into the atmosphere.

Claims (2)

1. Device for separating bulk material from the air flow, comprising a precipitation chamber divided into coarse and fine chambers with precipitation elements installed in them in the form of frames with nets, characterized in that, in order to increase the efficiency of trapping bulk material and dust, the chamber coarse and fine cleaning provided with partitions rounded at the end of the coarse chamber and at the beginning of the fine chamber and with slots arranged in a checkerboard pattern, at an angle to the axes of the chambers on p Dinners are fitted with precipitation elements, the free ends of the precipitating elements are displaced from the axis of the chamber towards the springs in the coarse chamber, the ends are installed at the axis in the fine chamber, and the coarse springs of the chamber are made with greater rigidity than in the fine chamber. 2. The device according to claim 1, that is, so that the frame is made with an emphasis.  one FIG. "3 NXXX X XxNXXXXXX xXV NV OvVO 3 “V. 4: 1 IT NXX i ir