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Roots blower common failure reason and solution

Release date:2015-11-25 00:00 Source:http://www.zqlcfj.com Views:

A roots blower, the temperature is too high

The reason:                                                The solution:


(1) the tank oil too much, too thick, large dirty;        (1) lower oil level or carry oil;

               

(2) filter or blockage in a muffler;                       (2) remove plugging;

 

                            

(3) the pressure is higher than the specified value;        (3) reduce the differential pressure across the blower;


(4) the excessive wear of impeller clearance;               (4) fix clearance;


(5) bad ventilation, indoor temperature is high, the imported high temperature; (5) open vents, reduce the room temperature

(6) the low speed, belt skid.                                (6) increasing speed, prevent the belt from sliding.

Second, the fan flow is insufficient

The reason:                                                The solution:


(1) import filter clogging;                              (1) cleaning filter dust and plugs;


(2) the impeller wear and clearance increases too much;  (2) repair the clearance;


(3) belt creep;                                           (3) the tighten belt and increased root number;


(4) the inlet pressure loss;                              (4) adjust the inlet pressure to achieve specified value;


(5) pipe ventilation leakage.                              (5) check and repair the pipelines.


Three roots blower, spill or leak into the casing


The reason:                                                                         The solution:


(1) the fuel tank is too high, by the discharge of oil leakage from mouth         (1) to reduce oil level;

 

(2) the sealing failure, cause the shaft end oil;                                  (2) replace the seal;

(3) the pressure is higher than the specified value;                               (3) open vents;


(4) the wall panel and tank vent plug, caused by oil spill into the casing.    (4) the middle cavity loaded with 2                                                                 mm diameter of the plug, open the cock under the wall


  Four roots blower, abnormal vibration or noise

  The causes of

  (1) rolling bearing clearance over specified value or bearing wear;

  (2) the gear side clearance is too large, in the wrong, fixed not tight;

  (3) caused by foreign body and dust impeller and impeller, the impeller and casing impact;

  (4) impeller due to overload, axial deformation of collision;

  (5) due to overheating of the impeller and casing inlet friction;

  (6) because of the scale or foreign matter overbalance the impeller;

  (7) the anchor bolts and other fasteners loose.

  response

  (1) the replacement of bearing or bearing;

  (2) heavy gear and ensure the lateral clearance;

  (3) the cleaning air blower, check whether the casing is damaged;

  (4) check the back pressure, check for impeller, and adjust the clearance;

  (5) check the filter and back pressure, increase the impeller and casing import clearance;

  (6) clean the impeller and casing, to ensure that the impeller clearance to work;

  (7) tighten the anchor bolts and leveling base.

  Five roots blower, motor overload

  The consequences of

  (1) compared with the specified pressure, differential pressure is big, the back pressure or imported high pressure;

  (2) compared with the equipment requirements of flow, the fan flow is too big, so pressure;

  (3) import filter blockage, export pipeline obstacle or blocked;

  (4) moving parts are collision and friction (stuck);

  (5) oil level is too high,

  (6) the narrow V belt overheating, vibration, the pulley is too small.

  The solution

  (1) reduce the pressure to the specified value;

  (2) excess gas in the atmosphere or reduce blower speed;

  (3) remove obstacles;

  (4) immediately stop and check the reason;

  (5) the oil level is set to the correct position;

  (6) check the belt tension, with large diameter of the pulley.

  Six, roots blower motor does not turn generally have the following reasons:

  1. Overload: generally a blocked air filter, exhaust pipe blockage, carrying collision rotor caused by partial.

  2. The motor:

  < 1. Defective insulation < 2. Dust too much < 3. Water < 4. Bearing damage

  3. Poor connection lines

  4. The fuse is broken

  5. Fan is bad

  < 1. No lubricating oil grind: the reason is caused because of the no-load running under the oil, fan filter joint filter blockage, pipeline damage, air filter blockage, insufficient in the amount of oil in the tank.

  < 2 in sand dust and dirt

  < 3 water rust

  < 4 rotor by partial, bearing damage

  6. The voltage is too low

  7. Overheating trip

  The causes of deficiency of roots blower, exhaust:

  1. Lack of lubricating oil

  2, oily bad

  3. The oil duct air leakage

  4. Imported filter clogging

  5. Belt skid too loose

  Eight, other common failure reason and solution

  1 the impeller and the impeller friction

  (1) of the impeller on the pollution of impurities, causing the gap is too small;

  (2) gear wear and tear caused by lateral clearance;

  (3) gear fixed not firm, cannot keep impeller synchronization;

  (4) bearing wear clearance increases.

  (1) remove dirt, and check the internal parts is damaged;

  (2) adjust the gear clearance, if the gear side clearance is greater than the average 30% ~ 50% should replace gear;

  (3) to gear assembly, keep taper fit contact area by 75%;

  (4) change the bearing;

  2 with top of wallboard, impeller impeller and casing friction

  (1) incorrect installation clearance;

  (2) the work pressure is too high, beyond the specified value;

  (3) the operating temperature is too high;

  (4) case or base deformation, fan positioning failure;

  (5) bearing axial positioning.

  (1) to adjust the clearance;

  (2) find out overloading, the pressure to the specified value;

  (3) check the installation accuracy, reduce pipeline traction;

  (4) check repair the bearing, and ensure the clearance.

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