Product Overview:

CYZ-A self-priming centrifugal oil pump, single-stage single suction oil pump. This pump is suitable for products in the petroleum industry, land oil depots, and oil tankers, and is also suitable for use as a marine cargo oil pump, bilge pump, fire pump, ballast pump, and machine cooling water circulation. It can transport petroleum products such as gasoline, kerosene, diesel, and aviation kerosene, as well as seawater and clean water. The medium temperature is -20 ℃ -80 ℃. If transporting chemical liquids, corrosion-resistant mechanical seals can be used instead.

Product features:

1. This pump belongs to the self-priming centrifugal pump, which has the advantages of simple structure, easy operation, stable operation, easy maintenance, high efficiency, long service life, and strong self-priming ability. There is no need for a bottom valve in the pipeline. Before operation, it is only necessary to ensure that a certain amount of oil is stored in the pump body. When used on oil tankers or water transport vessels, it can also serve as a cleaning pump with good cleaning effect.
2. The pump is refined using high-quality materials and sealed with hard alloy mechanical seals, which are durable and long-lasting. The discharge pipeline does not require the installation of a safety valve, and the suction pipeline does not require the installation of a bottom valve, thus simplifying the pipeline system and improving working conditions.

Maintenance and disassembly:

The characteristic of this gear oil pump is its simple and reliable structure, as well as its durability. Under normal idle conditions of the pump It generally does not require frequent disassembly and maintenance. When a malfunction is discovered, what should be done? Exclusion is sufficient.

1. When maintaining the pump, several main parts should be noted:

a. Rolling bearings: After long-term operation of the oil pump When the bearing wears out to a certain extent Do we need to make changes?.
b. Front sealing ring, rear sealing ring: When the sealing ring is worn to a certain extent Do we need to make further changes?.
c. Mechanical seal: Mechanical seals should generally not be disassembled for inspection in an inert state without oil leakage?. If there is a serious leakage at the leakage port at the lower end of the bearing body, the mechanical seal should be disassembled and inspected. When installing and disassembling mechanical seals Must be handled with care, paying attention to the mating surface? Jie Protect the engraved surfaces of the stationary and moving rings and strictly prohibit any impact or collision. The main reason for leakage caused by mechanical sealing is due to the rubbing of the mirror surface. The repair method for gear oil pump can be to grind the friction surface to restore the mirror finish. Another reason for mechanical seal leakage is the "O" type rubber seal? Improper installation or deformation and aging of the buffer pad. Do we need to adjust or change it at this time? Reinstall the O-ring seal.

2. Disassembly and assembly sequence of oil pump:

a. Remove the motor or detach it? Axis device.
b. Remove the bearing assembly Check? The radial clearance between the impeller and the front ring Check? Is the impeller nut loose
c. Remove the impeller nut Pull out the impeller Check? The radial clearance between the impeller and the rear sealing ring.
d. Loosen the set screw of the mechanical seal and pull out the dynamic ring part of the mechanical seal Check? Moving? Ring dysprosium surface? Check the sealing condition of the "O" - shaped sealing ring (or buffer pad).
e. Spinning out? The tightening nut of the axle Pull it out? Axis device.
f. Remove the bearing end cap Remove the pump shaft and bearings.
g. Assemble in reverse order during installation.

The use of CYZ-A self-priming centrifugal oil pump:

（1） Preparation and inspection work before starting:

1. This series of oil pumps uses high-quality calcium based butter and No. 10 engine oil for lubrication according to the working and operating conditions of the pump. If a grease lubricated pump is used, grease should be regularly added to the bearing box. If an oil lubricated pump is used, grease should be regularly added to the bearing box If the oil level is insufficient, add enough.
2. Inspection? Is the fluid stored in the pump casing higher than the upper edge of the impeller If it is insufficient The storage fluid can be directly injected into the pump body from the filling port on the pump casing. It should not be started and operated under idle conditions with insufficient storage fluid, otherwise the pump cannot work normally and the mechanical seal may be damaged.
3. Inspection? Is there any jamming or collision of the rotating parts of the pump.
4. Inspection? Pump body feet and each one? Check if the nut at the junction is loose.
5. Inspection? The coaxiality or parallelism between the pump shaft and the motor shaft.
6. Inspection?? Is there any air leakage in the pipeline? If there is any air leakage, it must be eliminated.
7. Open the valve of the suction pipeline and slightly open (not fully open) the outlet control valve.

（2） Starting and shoving:

1. Start the oil pump Pay attention to whether the direction of the pump shaft is correct.
2. Pay attention to any abnormal sounds and vibrations during rotation.
3. Pay attention to the readings of the pressure gauge and vacuum gauge After starting, when the readings of the pressure gauge and vacuum gauge go through a certain period? The fluctuation indicates stability It indicates that the pump has been filled with liquid and the oil pump has entered normal oil delivery operation.
4. During the self suction (or tank cleaning) process before the pump enters normal oil transportation operation, special attention should be paid to the idle condition of the oil temperature rising inside the pump. If this process is too long, the oil inside the pump will? If it is too high, stop the pump for inspection? The reason behind it.
If the liquid temperature inside the pump is too high and causes difficulty in self-priming So we can temporarily shut down Use the liquid in the discharge pipeline to flow back into the pump or directly replenish the liquid into the pump through the storage port on the pump body Reduce the liquid in the pump Then start it up.
6. Adjust the outlet control valve to make the pressure gauge reading point to the specified area Avoid operating the oil pump within the lower limit range of the designated area To prevent motor overload caused by excessive shaft power Or due to excessive flow, cavitation may occur in the pump, affecting its normal operation Make the pump vibrate strongly issue? The sound. The range of pressure used when transporting various types of oil can be found in the "Table of Pressure Control Range for Various Liquids".
7. If the pump experiences strong vibrations during operation? The sound may be caused by cavitation in the pump, which can occur for two reasons:
One is that the flow velocity of the inlet pipe is too high; The second issue is that the suction distance is too high. When the flow rate is too high, the outlet control valve can be adjusted to increase the pressure gauge reading? If there is a blockage in the pipeline, it should be promptly eliminated; When the suction distance is too high, the installation height of the pump can be appropriately reduced.
8. The pump stopped for some reason during operation When restarting, the outlet control valve should be slightly opened (not fully closed), which is beneficial for the gas to be discharged from the outlet during the self-priming process It can also ensure that the pump starts under lighter loads.
9. Pay attention to checking whether there is any leakage in the pipeline system.

（3） Stop the pump:

Firstly, the gate valve on the discharge pipeline must be closed.
2. Stop the pump from rotating.
During the cold season, what should be done? Drain the fluid stored in the pump body and the water in the cooling chamber of the bearing body to prevent freezing and cracking of the components.

Performance parameters:

Installation dimension diagram: