Cause analysis of pneumatic lift pump

roots blower, gas supply failure
. Roots blower, export safety small pneumatic valve pressure setting
the beginning of the trial production, with the increase of the grinding feed rate, a pneumatic lift pump plugging material. Roots blower current value in %, belongs to the normal range, roots blower but export safety pneumatic valve exhaust outward. Piping on the barometer readings do not meet safety pneumatic valve emptying kPa pressure. Pneumatic valve to adjust the security after compression screw, this kind of wall material can be ruled out.
. It falls out of roots blower, triangle or burning
in the triangle wear aging or new triangle tension does not fit easily make triangle loss or damage. Roots blower is controlled, such as the picture display station current value by normal fell to no-load current % % around, roots blower and the other a current rise from % to %. The alarm did not pay attention to this, central control room roots blower switch spare not in time, lead to air lift pump plugging material. Spot checks found on roots blower machine export pipeline safety pneumatic valve to exhaust, the first stage of roots blower triangle fall off or destroyed, the motor idling, causing another typhoon rising mechanical and electrical flow. Roots blower switch to the standby can solve the problem.
. Roots blower, exports pneumatic valve pneumatic non-return valve core loss, by the pneumatic valve roots blower pneumatic valve wear
export non-return pneumatic valve is used in fan after downtime to prevent pressure airflow moving against to the rotor cavity. By the pneumatic valve for pneumatic control, open in front of the fan motor, the motor closed after downtime, anti channeling to cutting pressure airflow. Because as pneumatic valve pneumatic valve wear gap, leading to pressure air gap from the rash, aerodynamic shock non-return valve pneumatic valve core, time grows, pneumatic valve core loss. Such cause plugging material phenomenon is as follows:
roots blower is shown table about current value by normal % around the peak moment by the no-load current of %. On-site inspection pneumatic lift pump plugging material, but roots blower machine safety pneumatic valve exhaust. Roots blower air flow from the failure of the exhaust pipe, the rotor cavity to the suction pipe outside. Roots blower stop station, by the pneumatic valve closed, the roots blower machine instantaneous by % rise to % of current value, the safety of pneumatic valve to vent.
and pneumatic lifting pump damaged, on the canvas of chamber volume is expected to
as the canvas layer damage, after feeding pneumatic lift pump slurry is not a good gasification, reduce the transmission capacity of the pump, when the feed capacity is more than the transmission capacity of the pump, plugging material. Roots blower machine current value all around %, security pneumatic valve is deflated.
processing method: don't need to immediately stop change, usually wait until down when change the canvas. The scene processing can not open the pump body when manhole door feeding, only need to top up with library materials bag dust exhaust fan inlet pneumatic valve, at the same time, choose to open roots blower machine the pump body material can be empty. Damp agglomerate

and ir pneumatic lift pump plugging caused by material factors caused mainly material moisture, especially after wet gas conditioning tower bottom putty, clear the damp material after screw conveyor into pneumatic lift pump, cannot be gasification off. Roots blower is controlled according to a current value of around in the no-load current %, security pneumatic valve not deflated, but diffuse material feeding chute, tap on a pump body, the fullness sound.
processing methods: stop the raw meal grinding system,