Sand(150um ≤ sand diameter ≤ 850um) procedure. This test is performed to help evaluate the ability of materiel to resist the effects of dust that may obstruct openings, penetrate into cracks, crevices, bearings, and joints, and to evaluate the effectiveness of filters
Its structure is a funnel,a collecting hole for dust on the bottom,on the right side of this hole is equipped with a suction inlet of turbine circulating fan.Send the pumped dust into the bottom of inner chamber and then to the left side and go upwards;blow the dust into test chamber from the left side; the dust should be blown rightwards in a horizontal direction and then begin circulation.
8, sand and dust composition: If there is no other clear provisions, large sand with quartz sand (silica composition in more than 95% by weight).
9, sand diameter: 150um ≤ sand diameter ≤ 850um;
10, collecting system: the system can automatically collect the falling sand, and enter the box to continue the cycle.
11, box seal: no dust leakage during operation, you can well protect the surrounding environment from pollution.
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12, Material: 304 stainless steel
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13, box door: fully open single-wing (1300 × 1300mm), with double silicone rubber seal and door locks.
14, observation window (400 × 600mm) with a protective film heating.
15, automatic vacuum cleaning system.
16, wind speed simulation system: High-power centrifugal fan to produce strong wind, and automatically adjust the wind speed through the inverter.
17, rotating table (diameter 800mm) to 1 rev / min counterclockwise rotation, to provide some slots on the specimen to be fixed. Rotary table motor shaft sealed by O-ring.
18, collectors (funnel-shaped) in the lower part of the test space.
19, the air compressor through the pneumatic valve on the machine to control the switch and air purification.
20,50 kg of sand for normal operation for 5 years
21, equipment weight: about 3000Kg
22, box control functions: temperature Celsius, relative humidity, wind speed m / s, sand density g / m3
23, configuration description
24, PC control system include: Lenovo 1 Taiwan (mainstream market configuration), and RS232 serial port
25, PC control functions include:
Automatic feedback control: wind speed automatic feedback control adjustment.
1, safe and reliable grounding protection device;
2, power supply voltage, leakage and lack of phase protection;
3, independent studio over-temperature protection;
4, compressor overload protection;
5, heater short circuit / overload protection;
6, blower motor overload protection;
7, When the system detects a protective device is activated, it will automatically power off and alarm.
1, Site: the ground level, well-ventilated. No strong vibration around the device, no strong electromagnetic field. No flammable, explosive, corrosive substances and dust around the equipment. Ground bearing capacity: not less than 800kg / ㎡. Around the equipment reserved for about 1500mm operation and maintenance space.