Improved application of ecg excavator compressor filter in quarries

Figure 3. Double layer filter device
Therefore, as a solution to this problem, a metal guide (Fig. 3b) was installed on the air inlet diffuser of the double-layer filter device (Fig. 3a). As a result, the air passing through the inlet of the filter device is distributed along the filter shell and the production period increases without damaging the filter (Fig. 3v).
In Figure 4, experiments were carried out for 10 days by installing two-layer filters and filter air inlet diffuser guides on the compressor equipment of excavators EKG-8I N°34, EKG-8I N°36, EKG-5A N°35, and the dust particles in the filter trapped around the diffuser part a graph of quantities is presented.
Figure 4. Indicators of the amount of dust trapped in the diffuser part of the double-layer filter device

Instead of a single-layer filtering device, a double-layer filtering device was proposed and used in excavators EKG-8I N°34, EKG-8I N°36, EKG-5A N°35 in the Daugiztau quarry. In order to determine the amount of dust, air productivity, and pressure of the two-layer filter device, an aspirator PU-4E device was installed at the air outlet from the air flow through the compressor equipment (Fig. 5a), and with the help of the device, air temperature, humidity, atmospheric pressure, productivity and AFA-VP were determined. -20 along filter readings received. The weight of dust settled on the used AFA-VP-20 filter was measured using a Mettler Toledo instrument balance (Figure 5b). The results of the measurements are shown in Table 1.

а. b.
a – aspirator PU-4E device; b – Mettler Toledo device scale
Figure 5. The process of measuring the amount of dust particles in the air
Table 1
Results from Aspirator PU-4E and Mettler Toledo devices

№	Filter devices	Air temperature, ^0С	Moisture %	Atmospheric pressure, mm. mercury column	Productivity, l/min	AFA-VP-20 Alonj filter weight, gr	Weight of used AFA-VP-20 powdered Allong, gr	Amount of dust in AFA-VP-20 filter, gr
1	Single layer filter device	27.8	22	746	20	0.284	0.297	0.013
2		26.3	22	747	20	0.273	0.287	0.014
3		28.8	38	729	20	0.274	0.290	0.016
4	Double layer filter device	27.0	23	746	20	0.270	0.273	0.003
5		29.3	26	741	20	0.271	0.274	0.003
6		30.3	34	732	20	0.276	0.280	0.004

Figure 6 shows the amount of dust in a single-layer filter device and a double-layer filter device through the AFA-VP-20 along filter.