- Model NO.: 2RB
- Material: Aluminium
- Trademark: greentech
- Origin: China
- Color: Silver
- Drive: Motor
- Specification: 2RB
- HS Code: 84148090
The impellers in the G_series machines are mounted directly on the motor shaft for noncontact compression entirely without friction. Maximum operational reliability, even at high differential pressures. Is ensured by the arrangement of the bearings outside the compression chamber.
The gas it taken in through the inlet. As it enters the side channel, the rotating impeller. Imparts velocity to the gas in the direction of rotation. Centrifugal force in the imp eller blades accelerates the gas outward and the pressure increase. Every rotation adds kinetic energy. Resulting in the further increase of the pressure along the side channel. The side channel narrow at the rotor, sweeping the gas off the impeller blades and discharging it through the outlet silencer where it exits the side channel blower.
Features:
Die-cast aluminum alloy housing.
Both 50Hz and 60Hz available.
Dual-usage: Compressor and Vacuum (suction and blow).
Electronic motor with IP55 protection and Insulation class H.
No oily odors.
Low noise and libration.
Maintenance-free.
Percussion drilling is employed when auger or wash boring is not possible in very stiff soil or rock. It also can be used in most soil types.
Here the advancement of a hole is achieved by alternatively lifting and dropping a heavy cutting or hammering bit that is attached to a rope or cable that is lowered into an open hole or inside a temporary casing (casings are hollow cylindrical pipes used for borehole stability and to prevent the loss of drilling fluid through the boreholes).
Usually a tripod is used to support the cable. The stroke of bit varies according to the ground condition. The major disadvantage of this method is that it is not possible to get good-quality undisturbed samples. In very hard rock (and especially fractured hard rock), down-the-hole (DTH) drilling can be employed. In this case the hammer, applying repeated percussive pressure, is located just behind the drill bit inside the hole, unlike the open percussion drilling, where the hammer is on top of the drilling string.
The drilling string provides the necessary force and rotation to the hammer and bit, as well as compressed air or fluids to the hammer and for the flushing of cuttings.
This arrangement also allows for much deeper percussion drilling. However, the DTH drills are typically more expensive.
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Henan YikYui Prospecting Machinery Co., Ltd , https://www.yyanchordrillingrig.com