2016年7月4日星期一

Removing the fan mounting method

First remove the protective cover, disconnect the motor and fan couplings, coupling bolts when disassembling the bolt is tapered, and must take the lead screw nut is screwed to flush when appropriate banged move before You can remove the nut, attention must take place the removed bolts to the specified location or the box, so lost.
2, the inlet valve or disassemble the fan and air guide short, fan housing, pay attention to the disassembly sequence, well marked. Bearing cover removal, disassembly must before discharging oil bearing housing, bearings at both ends and gradually removed the gland, when the bearing housing cover is removed, be sure to pay attention to the positioning pins, not to damage the pin, bearing housing placement must not be placed directly on the ground, on the ground have a plate or other flat things.
 3, the rotor must be tied hanging out strong, then grilled couplings, Rama did after top tight with rapid heating torch, do not heat too long, try to use the Ramallah bearing disassembly, try not to cut off, cut off when, be careful not to hurt the spindle. Impeller fastening nut demolition, a dedicated wire blank must use tap tap, dried jack top tight channel, rapid heating, rapid post ripped loose.
4, when cleaning the impeller, easy to remove the available tools such as shovels to clean up beat, the first time by Oaks cleaning, be sure to use cloth wrapping the impeller surface uniformly moist, then gradually cleared.
5, the bearing housing to clean thoroughly, wipe clean with a rag and cleaning agents, bearing housing sealing surface with a clean blade, check the inner bearing surface scratches, inspect the spindle wear, polished with sandpaper to clean the spindle.
 6, installation of bearings, bearing heater bearing is heated to 100 degrees, the spindle prior butter evenly, quick to install in place, prepare near nut in place, plus the lock piece mounted on the front wheel bearings must take gland installation, production good bearing seal asbestos pad, (the same before coupling installation, installed bearing gland, making a good seal) impeller and coupling installation must heated to 170 ---- 200 degrees.
7, pay attention when installing the rotor bearing must indeed stuck in the bearing, accurate placement, and then covered with the bearing housing, (according to bearing rotation is flexible, consider the added thickness of lead wire test seals) bearing housing sealing surfaces to use enough sealant evenly, accurate positioning pin in place and tighten the bolts evenly. Bearing gland in place. (Felt seal replacement, seal not too tight or too loose)

8, lubricating the bearing housing, according to the requirements of Canada, 150 # or 46 # anti-wear hydraulic oil, add the oil level to the oil sight glass two-thirds. Air guide installation, cover the fan housing, housing seal surface with asbestos tape or with PTFE seal, should be uniform. Fan inlet valve or a short installation, the sealing surface with asbestos rope or PTFE tape, bolts evenly.
  9, manual plate car, the rotor rotates freely, without friction or different sound, connecting the motor and fan coupling using a dial indicator to find the pair, cylindrical, face error does not exceed 0.1mm, mouth up and down the value of the error does not exceed 0.1 mm, tightening the coupling bolts installed shield.
 10, contact point inspection and operation of parties, test, test normal, three confirmed the signing, clean industrial equipment inventory, clean up the site "3S", delisting

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2016年7月3日星期日

The difference between the axial fans and centrifugal fans

Centrifugal fans and axial fans except that:
  1, centrifugal fan to pull air flow tube change media, but does not change the axial fan air flow pipe medium;
  2, the former air volume and pressure are large, the former air volume and pressure are very low;
  3, the former installation is more complex, which is relatively simple to install;
  4, the former motor and fan is typically connected by a shaft, which is generally in the fan motor;
  5, see the former Chang An air conditioning unit installed in the inlet and outlet of the boiler drum, induced draft fan, and so on, which is often installed in the duct which, or the front end of the outlet duct; centrifugal fan is a little big head wind. The axial fan is strong wind and small head. Centrifugal fans single typhoon amount is difficult to do so much and axial fans 1, both of which function Purpose: To overcome the resistance to fluid flow, the fluid must have a certain amount of pressure energy. Fans (and pump) is the fluid pressure can produce fluid machine.
2, the function definition:
 ① When the high-speed centrifugal impeller rotating by inertial force generated by the impeller can increase the pressure of the fluid. Often used in a relatively small flow rate, the pressure can be relatively larger occasions.
 ② by the axial-flow type impeller rotating at high speed, the lift generated by the impeller can increase the pressure of the fluid. Generally used in a relatively large flow rate, the pressure can be relatively smaller occasions.
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2016年7月1日星期五

Professional custom heavy duty fans-XIANRUN

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Custom heavy-duty fans turbine systems typically used in critical equipment or critical processes, high reliability requirements. Therefore, we designed a custom heavy duty fans each time, will be calculated multiple serious and rigorous review.
In the manufacture of customized heavy duty fan has always been the focus of quality control and inspection department of the object. Production department will also produce custom-heavy fan smoothly arranged in priority, to ensure that production delays will not affect the user or the project completed on time production system.

To facilitate transport, bulky wind reasonable chance of being disassembled to ensure that all components can be used to transport containers. In order to ensure a smooth fan system installed, all of the components have to be disassembled easily recognizable logo. Just follow the installation instructions provided in our manual, even first-time installation of the fan system installers, can be correctly and quickly complete the assembly.

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