## 2 Model and Experimental Research
### Dust Settler Segment Experimental Tests of Air Filter Multicyclone
#### 2.4.3 Test Results Analysis of MT Multi-Cyclone Segment  
Suction stream values from the left (L) and right (R) cyclones of the MT multi-cyclone segment for the same rows of cyclones differ slightly, and therefore, the measurement results of the suction streams from the cyclones from only one, the left column (L) of the multi-cyclone segment, were used for further analysis (Figure 18). The highest values of the \(Q_{Sc}\) suction streams from the individual cyclones of the segment with a dust settling chamber in the original version (before the division of the settling chamber into channels) were recorded, regardless of the value of the total \(Q_{Sc}\) suction stream, for the first cyclone from the middle column (S). Segment dust collector chamber structure change (variant A) with the division into three suction channels (Figure 19) resulted in a significant improvement in the suction uniformity. There was a decrease by about 13% of flow values sucked off \(Q_{Sc}\) from the first two cyclones (channel 1) and a significant increase by 16% of the flows in the channel No. 3. In channel No. 1 there were large (about 14%) differences between stream values sucked off from cyclone No. I and No. II. In the remaining channels, these differences do not exceed 4%. The stream sucked off from cyclone No. II with its small value \(Q_{Sc}\) = 4.6 m\({}^{3}\)/h clearly differs from the suction streams from the remaining cyclones of the segment, the value of which fluctuates within the range of 5.2-5.4 m\({}^{3}\)/h. The reason for such a low value of the \(Q_{Sc}\) flux when suoticed from the second cyclone may be the small height (12 mm) of channel No. 1, and the lack of a chamber into which the suction streams from the cyclones flow, as is the case with the other channels, as well as the large distance of the second-order cyclones from the outlet stub, which suppressed the air flow \(Q_{Sc}\). The above analysis shows that channel 1 should not be assigned a larger number of cyclones. In the case of the tested settle, it should only be the first row of cyclones. Figure 18: \(Q_{Sc}\) values sucked off streams from single cyclones of the original \(S_{MT}\) segment: (**a**) in the row No. I, (**b**) in the left column (L), (**c**) in the row No. VII. Figure 19: \(Q_{Sc}\) suction stream values from individual cyclones from left column (L) of the segment before and after the division of the dust settling chamber into suction channels for variants (**A**–**D**). The measurement results of the suction flow values \(Q_{\mathrm{Sc}}\) from the individual cyclones for the left column (L) of the segment (variant D) of the dust settling chamber, for two values of the suction flow \(Q_{\mathrm{Sc}}=108\) m\({}^{3}\)/h and \(Q_{\mathrm{Sc}}=54\) m\({}^{3}\)/h, show (Figure 19) a clear improvement in the uniformity of the suction between cyclones in the channels, and within the entire column. The differences between the suction streams from adjacent cyclones in channels 3 and 4 do not exceed 3%. For a lower value of the suction stream (\(Q_{\mathrm{Sc}}=54\) m\({}^{3}\)/h), these differences are insignificant. Separation Efficiency Experimental Studies of Single Cyclones in the Multi-Cyclone Segment 2.5.1. Purpose and Scope of Research  
The efficiency research for dust removal from the cyclones in the \(S_{MT}\) segment of the MT multi-cyclone was aimed at experimentally verifying the developed concept of the changes that can be made in the design of the internal structure of the dust settling chamber of the segment. An experimental evaluation of the developed concept of the changes that can be made in the internal structure of the dust settling chamber of the \(S_{MT}\) segment of the MT multi-cyclone was performed due to the efficiency of dust removal in individual cyclones. The separation efficiency values of single cyclones from the left column (L) of the \(S_{MT}\) segment were determined.