Fan in industrial consumption occupied the important position, so if the fan bearing wear, very trouble.
The fan is on the basis of the kinetic energy is converted to potential energy principle, the application of high-speed rotating impeller speed, the gas and then slow down, change flow direction, the kinetic energy is converted into potential energy (
Pressure)
。
In single stage centrifugal fan, the gas from the axial impeller, changes into radial when gas flows through the impeller, and then into the diffuser.
In the diffuser, gas activity changed direction and pipeline cross-section area increases the air flow deceleration, this deceleration function converts kinetic energy into pressure energy.
Main attack increased pressure in the impeller, the second attack in the diffusion process.
In multistage centrifugal fan, air burning into the next round, with reflux device has higher pressure.
1.
The fan bearing chamber of wear main reasons: 1)
Bearing short smooth, due to the working temperature is higher, forms bearing damage and wear bearing chamber;
2)
Size tolerance, due to the gap between bearing and the bearing chamber wear form of relative movement, 3)
Bearing axial channeling, bearing gland not pressure or bearing chamber size too big can't locate formation bearing, fan form the axial moving while I wear during operation.
Traditional repair process of needle bearing chamber wear and traditional online technology has the following categories: (repair plan
1)
With non-standard sets (
2)
Pitting, direct bearing assembly (
3)
Change with non-standard sets of Mosaic non-standard sets, offline machining necessary disposal, on dust removal fan and other important equipment is difficult to stop production for a long time to repair, enterprise general won't adopt this technology.
Low pitting dozen pitting repair technology is a kind of emergency measures, and wear very small place, only after repair of the bearing inner ring and shaft fit only for contacts, so in the operation process under the condition of large load, pitting susceptible to fatigue wear, use of life is short, can only be temporary emergency.
Low change the disposal measures to change the new parts is the most simple, its feature is about small devices or components is match, both sides will Jane measures, but the large equipment, remove the complex, high cost of capital equipment, common to introduce and parts purchasing cycle is long, continuous consumption enterprise hard to wait.
Therefore, bearing seat (
Room)
Attack and wear, will use the repair technology of how to become a big problem, now, a new kind of technology --
—
Carbon nanotubes polymer technology, is arises at the historic moment, just deal with the technological fix on the board.
Sauvy carbon nanometer polymer materials to repair technology reconstruction project of the steel centrifugal fan field application case, inject smooth oil in bearing chamber during the process of debugging not sintering formation bearing, at the same time form the bearing chamber wear, wear size width of 1-120 mm in depth
2 mm, bearing type 6238.
The following is the application of carbon nanotubes polymer repair technology to stop dust removal machine housings (
Room)
Stop to repair.
