1. Conditions of use

This product is suitable for thin oil circulating lubrication systems. Its working medium is turbine oil, No. 20-25 mechanical oil and steel rolling machine oil. The kinematic viscosity grade is N22~N460 (equivalent to ISO VG22~VG460).

The nominal oil supply pressure of the thin oil station is 0.63MPa; the filtration accuracy is 0.08~0.12mm; the cooling water temperature is ≤28℃; the cooling water pressure is 0.2~0.3MPa; the heat exchanger oil inlet temperature is 50℃, and the temperature drop is 7~8℃; When using steam for heating, the steam pressure is 0.2~0.4MPa.

2. Working principle

During operation, the oil is sucked out from the oil tank by the gear pump, and is directly sent to the equipment through the one-way valve, double-cylinder oil filter, and tube-type oil cooler.Process lubricationpoint. The high oil supply pressure of the oil station is 0.4MPa, and the low oil supply pressure is 0.1MPa. According to the requirements of the lubrication point, the operating pressure is set by adjusting the safety valve. When the working pressure of the oil station exceeds the set pressure of the safety valve, safety The valve will automatically open and excess oil will flow back into the tank. During normal operation, one oil pump is working and the other is in standby. Sometimes when the equipment's fuel consumption needs to increase for some reason, the system pressure drops. When it drops to the set value, the backup pump is automatically turned on through the pressure controller adjustment and works together with the working pump until the pressure is normal. Stop automatically. If the oil pressure continues to drop to another set value, it will be adjusted by another pressure controller to issue an accident alarm.

One set of filter elements of the double-cylinder oil filter is working, and one set of filter elements is in standby. A differential pressure transmitter is connected at the inlet and outlet. When the pressure difference exceeds 0.15MPa (≥250L/min thin oil station is 0.15~0.1MPa) , manual switching, the backup filter element works, take out the original working filter element, clean or replace the filter disc.

The oil outlet of the oil station is connected with a pressure-type electric contact thermometer, and two limits, high and low, are set according to the oil supply temperature requirements. When the temperature is low, the signal light is on and the heater is manually turned on for heating. When the oil temperature rises to a high point, the heater is automatically cut off and heating stops. When the temperature of the oil supply port is high, an alarm is given and the cooler is turned on.

The ≥250L/min thin oil station uses steam to heat the lubricating oil in the oil tank. The instrument panel also has an instrument for detecting the pressure difference between the inlet and outlet water pipes of the cooler, and its main components are installed separately on the foundation; while the ≤125L/min thin oil station All components are installed on the fuel tank and are of integral structure.

3. Structural characteristics

a) A backup oil pump is provided to ensure continuous oil supply to the lubrication points.

b) The filter is placed before the cooler to improve the filtration and passing capacity; it is more suitable for higher viscosity lubricating media.

c) Using a double-cylinder filter, the filter element can be cleaned and replaced without stopping the machine.

d) The tube-type oil cooler is used, which has small resistance and is easy to maintain.

e) The oil return is equipped with a magnetic mesh filter, which can adsorb and remove ferrous particles in the oil to ensure the cleanliness of the oil and reduce the wear of lubricating parts.

f) Equipped with an instrument panel and electric control box, it is convenient to observe operating parameters and can realize automatic control and accident alarm.

12. Ordering instructions

1. Example of ordering mark:

If ordering the above-mentioned JB/ZQ/T4147-91 standard thin oil station, mark it as follows:

For example: ordering a thin oil station with a nominal flow rate of 125L/min is marked as:

XYZ-125G thin oil station (JB/ZQ/T4147-91)

If ordering a thin oil station with a nominal flow rate of 400L/min but without a cooler

XYZ-400A thin oil station (JB/ZQ/T4147-91)

Note: "A" replaces "G" for thin oil station without cooler.

2. If the heat exchanger uses a plate cooler, please indicate it in the order contract. The outline drawing and foundation dimensions need to be changed accordingly.

3. The standard thin oil station is supplied as a complete set, with an electric control cabinet and an instrument panel. If it does not come with an electric control cabinet or an instrument panel, please indicate it in the order contract: If PLC control is required, please also explain it, and negotiate separately according to the requirements.

4. The lubricating oil grade and viscosity of the thin oil station and the filtration accuracy must also be stated. If the filtration accuracy is higher than 0.08mm or there are requirements for the filter element material, this should also be stated, and the price will change accordingly.

5. If you have special requirements for the thin oil station, you should make a non-standard order and the price will be determined through negotiation.