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How to use the roots blower maintenance?

Release date:2015-12-28 00:00 Source:http://www.queergnosis.com Views:

  Roots blower is the use requirement, the delivery shall not be higher than 40 ℃ of the temperature of the inlet medium, the medium of the particles after impurity content may not be greater than 1000 mg/m, the maximum size of the particles should be under 0, 1 mm. Use booster, shall not exceed the rated pressure value stipulated in the blower nameplate, due to the special structure of roots blower, so on the operation requirements with other fans have many differences, must pay attention to.

  A, start,

  Roots blower before start the boot should be prepared for the following work:

  (1) completely open the inlet valve, vent valve and the by-pass pipe;

  Check whether the air inlet air filter is unimpeded, filter inlet is fully open;

  (3) check the pipes, valves, muffler, air filter support whether firm, can not have add on the casing load force;

  (4) check whether the lubricating oil is good, the model is appropriate, lubrication oil layer depth shall, in accordance with the provisions of reach 3 ~ 5 cm above the line, the cooling water system was clear;

  5] suitable coupling, check whether impeller transshipment spirit, with or without friction collision;

  [6] check each part connection is good, do you have any loose;

  Once cleared debris around, keep fan two meters range without sundry;

  Being check the electric part and step-down starting equipment are in good condition;

  'levies check whether maintenance tools ready, adequacy of fire extinguishing equipment is complete.

  In the above nine work done, to boot. Roots blower boot shall, first of all, run idle 20 ~ 30 minutes, to observe all the fan is normal phenomenon, such as found that the impact or friction, should immediately stop check, and troubleshooting. After being empty machine working normally, can be load on. After being fan running, gradually adjust the outlet valve (or close the vent valve) gradually, gradually loaded to the rated pressure, but not overload operation. In absolute ban on startup will be closed, inlet and outlet gate valve can't suddenly stop when full.

  Second, the operation

  After the roots blower operation, operators should be keeping a close eye on the running status of all parts at any time to observe the temperature of the machine parts, the vibration of the machine, as well as the muffler noise, such as abnormal should immediately stop.

  Third, stop

  The normal downtime of roots blower is first opened the by-pass pipe, "fresh air", after waiting for air pressure drop down (basic is zero), to cut off the power supply, then close the inlet valve, cooling water system. Abnormal downtime should first consider open the by-pass pipe, for "fresh air"

  Four, maintenance,

  In normal operation, check the bearing every 1 ~ 2 hours, the tank oil, motor temperature, shall not be higher than the specified value. Roots blower noise is very big, in the process of operation in order to reduce noise, in addition to the installation of muffler is sometimes also can use some simple methods to reduce noise, such as using the crypt method. Dig a 4 ~ 5 m in underground after; The crypt, crypt sealed cover, with a catheter to the introduction of the air inlet crypt, with another catheter to outside air into the crypt. Two catheter to step into the bottom of the crypt as far as possible, so that we can reduce a lot of noise.

  There are two kinds of adjusting method of roots blower, is a kind of fresh method, this method is simple and reliable, but not the economy. Economical method is to adjust speed. Part of the shaft kiln cement plant roots blower in order to improve the air pressure, air volume, is the blower speed faster. But it should be noted that increase speed to consider the mechanical strength of mechanical equipment, don't add much, average speed should not exceed 15% of the nameplate. The larger motor speed increase also often replaced.

  Roots blower of lubricating oil replaced every 3 ~ 6 months or use the aperture is less than 50 micron copper wire mesh filter at a time. For the first time after starting work most time is 200 hours, should be an oil change. Appropriate muffler is about half a year maintenance time, replace the part or all of sound-absorbing material. Air filter should be often maintenance, import and export valve, by-pass pipe should be keep in good condition. There is a problem to repair immediately.

  Fifth, fault handling

  First question about airflow inadequate treatment:

  (1) the rotor slot big processing method is to use a tool to adjust the clearance;

  2 seal leakage processing method to replace sealing device;

  (3) filter mesh block processing method is to replace or clean the filter;

  The second motor overload problem solving:

  (1) no lubricating oil, here suggest changing high-quality lubricating oil;

  2 oil ring is not turning or rotating too slowly, suggested here for repair or replacement;

  (3) axial fan motor on the bad, here suggest renewed;

  Seal wear problem again:

  (1) seal ring and shaft sleeve alignment error is big, the solution replace worn components.

  2 shaft bending or debris into the sealing ring, shaft correction solution to remove debris and;

  (3) the rotor vibration is too large or bearing clearance is too large, the solution is to replace the bearing clearance deformation influence;


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