Pump shaft rotation is not smooth
(1) Axial clearance or radial clearance is too small. Reassemble and adjust the clearance.
(2) There are impurities in the pump. Clean it up.
There are errors in assembly.
(3) Coaxiality of pump and motor jaw coupling is poor. Coaxiality should be less than 0.1mm.
No demagnetization of pump parts. All parts should be demagnetized before assembly.
(4) The quality of the needle sleeve is unqualified or the needle is broken. Repair or replace.
(5) The discharge line is blocked. Remove foreign bodies.
Traffic is less than gear pump rated data
(1) If the liquid temperature is high and the viscosity decreases, the pump flow will decrease. For high pressure gear pump, it is necessary to check whether the seal is intact.
The liquid viscosity is high: if the liquid viscosity is too high, please choose diaphragm pump or high viscosity pump.
(2) Gear pumps generally can not be reversed. If the pump body is not installed correctly, the flow will be reduced and the self-priming capacity will decrease. At this time, should check the direction of rotation of the pump.
The motor speed is low, and the flow is reduced.
Gear pump common vibration and noise troubleshooting:
(1) Mechanical reasons
(2) The connection between KCB gear pump and coupling does not meet the requirements, resulting in vibration and noise. The coupling should be adjusted as required.
(3) Due to impurities into the pump, gear and shaft are easy to wear, there is noise. Filters should be added to clean the pump interior; Replace worn parts.
(4) The parts in the pump are damaged, or wear is serious, there will be vibration and noise.
The two gears have poor contact and rough tooth surfaces. The length of common normal is out of tolerance, the backlash is too small, and the contact area of two meshing gears is not in the position of indexing circle. At this point, the gear can be replaced. Meanwhile, check the bearings.
(5) gear axial assembly clearance is too small; The output traffic decreases.
(6) The high viscosity of oil will also produce noise. It is very important to choose the right gear pump according to the liquid viscosity. Transfer of acid and alkali and other chemical raw materials, we must choose stainless steel gear pump transfer liquid. It will be safer.
Pump body High temperature:
(1) Gear rotation is not smooth, can lead to gear pump heating. The solution can refer to the above.
(2) The viscosity of liquid is too high or too low. Reselect the oil.
(3) There is serious friction between side plate, shaft sleeve and gear. Repair or replace.
High ambient temperature, small tank volume. Should be treated separately.
Repair of gear pump main parts
(1) Tooth repair: remove the prismatic parts with fine emery cloth. Clean up; Seriously worn parts should be replaced.
(2) end repair: gear end wear, can use grinding method, grinding and polishing; When the wear is serious, the gear should be put on the surface grinder for grinding. Note: Both gears must be flat at the same time.
After reading this article: in the future use of pump in the process, will certainly be helpful to you. For more information on" Gear Pumps ".