ZYB gear pump high temperature during operation to repair the wear and tear
ZYB high temperature gear pump for conveying all kinds of lubricating liquid , can be equipped with high temperature materials , the viscosity of 5 × 10-5 ~ 1.5 × 10-3m2 / S. Gear pumps discomfort transport corrosive , containing hard particles or fibers , highly volatile or low flash point of liquids , such as gasoline , benzene , etc. used . This paper describes the ZYB high temperature gear pump during operation matters that need attention :

1, ZYB end and high-temperature gear pump after pump repair cover wear

Left between the gear end and pump cover certain gaps in the plane , said the end clearance . The end face of the work gear pump cover the contact surface in the plane of the end face of the resulting wear causes the gap increases , when exceeding the limit , will have a significant impact on the fuel pump .

When the gear face wear , can the polished end face , and then decomposed surface grinder pump housing to ensure that the pump end clearance within the scope of the requirements.

2 , repair ZYB high temperature gear pump drive shaft and bushing wear after

Since the radial thrust generated when the own weight and passive gear oil pump drive gear , shaft and bushing hole tends to produce eccentric wear , the gap increases . So gear pump at work because of the gap increases and the oil leak , reducing the amount of oil .

After driving shaft and bushing wear , can repair journal or repair bushings way to recover with the gap . When the journal slight wear , simply press out the old bushings replaced with new bushings and shafts generally do not repair , so the gap with restored to the allowed range. In the shaft and bushing wear very serious , with the gap increased greatly , not only to replace the bushings and shafts are chrome or vibration welding applications will increase in diameter , and then grinding to a standard size, in order to restore the journal and bush to meet the requirements .

3 , to repair the pump housing cavity and tooth wear after

After the pump housing cavity and tooth wear, a great impact on the fuel pump . When the gear pump shaft and bushing or shaft bore wear serious work addendum and the pump housing cavity surface will produce undue exposure . Also, because the oil into the oil chamber than the chamber pressure at which the pressure difference , into the oil chamber near the contact with the tooth top of the pump housing more, so wear of the pump housing chamber where more teeth that lumen top gap increases . Resulting oil pump into and out of the pressure difference between the oil chamber reduced to the teeth scraping oil and oil pressure lowering effect , causing oil pressure drop, reducing the fuel pump . Wear the pump housing chamber cavity casement law generally taken to be repaired.