KRACHT oil lubricating oil transfer pump KF5/315H1XBP0A0DP2

Uneven force phenomenon

The right side is the oil pressure chamber, and the left side is the oil suction chamber. The pressure between the two chambers is unbalanced; In addition, due to tooth tip leakage, the pressure in the oil pressure chamber decreases. Two unbalanced pressures act on the radial unbalanced pressure of gears and shafts. The higher the oil pressure, the greater the force, accelerating bearing wear, reducing bearing life, causing shaft bending, and increasing tooth tip and shaft hole wear.

KRACHT oil lubricating oil transfer pump KF5/315H1XBP0A0DP2Preventive measures: Use pressure balancing grooves or reduce the pressure oil chamber.

sealing form

1. Mechanical seal

2. Three layer oil chamber seal

3. Single layer sealing

4. Each sealing form of magnetic seal needs to be determined according to different inlet pressures and sealing performance

KRACHT oil lubricating oil transfer pump KF5/315H1XBP0A0DP2Reason for malfunction: a. Reverse rotation direction; b、 The suction or discharge valve is closed; c、 No material or low pressure at the inlet; d、 The viscosity is too high, and the pump cannot bite the material

Countermeasure: a. Confirm the direction of rotation; b、 Confirm if the valve is closed; c、 Check valves and pressure gauges; d、 Check the viscosity of the liquid and whether there is a flow rate proportional to the speed when running at low speed. If there is a flow rate, it indicates insufficient inflow

Insufficient traffic

(2) Fault phenomenon: Insufficient pump flow

Reason for malfunction: a. The suction or discharge valve is closed; b、 Low inlet pressure; c、 Blockage of export pipeline; d、 Leakage of packing box; e、 Low speed

Countermeasure: a. Confirm if the valve is closed; b、 Check if the valve is open; c、 Confirm if the discharge volume is normal; d、 Fastening; When a large amount of leakage affects production, the operation should be stopped and disassembled for inspection; e、 Check the actual speed of the pump shaft

Abnormal sound

(3) Fault phenomenon: abnormal sound

Reason for malfunction: a. Large eccentricity or poor lubrication of the coupling b. Motor malfunction; c、 Abnormal gearbox; d、 Poor installation at the shaft seal; e、 Shaft deformation or wear

Countermeasure: a. Correct or fill with lubricating grease; b、 Check the electric motor; c、 Check the bearings and gears; d、 Check the shaft seal; e、 Parking disassembly inspection

Reason for malfunction: a. High outlet pressure; b、 Excessive viscosity of the melt; c、 Poor assembly of shaft seal; d、 Wear of shaft or bearing; e、 Motor malfunction

Countermeasure: a. Check downstream equipment and pipelines; b、 Test viscosity; c、 Check the shaft seal and adjust it appropriately; d、 After parking, check if the hand cranked vehicle is too heavy; e、 Check the electric motor

Pump stopped

(5) Fault phenomenon: The pump suddenly stops

Reason for malfunction: a. Power outage; b、 Motor overload protection; c、 Coupling damage; d、 Excessive export pressure, interlocking reaction; e、 Abnormal biting inside the pump; f、 The shaft and bearing are stuck due to adhesion

Countermeasure: a. Check the power supply; b、 Check the electric motor; c、 Open the safety cover and conduct a turning inspection; d、 Check the instrument interlocking system; e、 After parking, confirm the front and rear turntables; f、 Confirmation of turning gear

Sealing oil leakage

(6) Fault phenomenon: Sealing oil leakage

Cause: a. The shaft seal was not adjusted properly; b、 The sealing ring is worn and the gap is large; c、 The friction surfaces of the dynamic and static rings of the mechanical seal are damaged; d、 Spring relaxation

Countermeasure: a. Adjust again; b、 Tighten the gland bolts appropriately or replace the sealing ring; c、 Replace the dynamic and static rings or re grind them;