Overview

CZW Series marine self-priming non-blocking drainage pump, a self-priming and non-blocking drainage in one, with outer recirculation and, and through the pump body, impeller 's unique design, can be like a common self-priming pumps that do not need to install the valve and irrigation water, and the suction containing large particles of solid and long fiber impurity in liquid, and can be widely applied to the bilge drain, the ship drainage treatment, municipal drainage project, farming, light industry, paper making, River textile, food, chemical, electrical, fiber, pulp and mixed suspension and other chemical medium in the most ideal impurity pump. Has the advantages of simple structure, good self-priming performance, drainage capability, high efficiency and energy saving, convenient repair and maintenance characteristics, the drainage pump Series products is a national initiative.

Features

1. This series of pumps is a self-priming centrifugal pump, which has the advantages of simple structure, convenient operation, stable operation, easy maintenance, high efficiency, long life and strong self-priming ability. There is no need for a bottom valve in the pipeline, just make sure that some oil is stored in the pump body before the pump works. When the pump is used on oil tankers or water conveyance ships, it can also be used as a stripping pump, and the cleaning effect is good.

2. The pump is made of high-quality materials. The seal of the pump is made of hard alloy mechanical seal, which is durable. The discharge pipeline does not need to install a safety valve, and the suction pipeline does not need to install a bottom valve, which simplifies the pipeline system. Improved working conditions. 

Drawing

The excellent design of our company's engineers, components made of high-quality materials can extend the life of the pump, reduce the frequency of maintenance, operation stability in complex environments, but it  also cause different prices. If you need more details about this, you can click on the news or send an email to ask us

Performance Parameter

Precautions for use

1. Preparation and inspection before starting:

(1) This series of oil pumps are lubricated with high-quality calcium-based butter and No. 10 oil respectively according to the working conditions of the pump. If the butter-lubricated pump is used, the bearing box should be filled with butter regularly. If the oil-lubricated pump is used, if The oil level is insufficient and should be added to the standard amount.

(2) Check whether the storage liquid in the pump casing is higher than the upper edge of the impeller. If the over-storage volume is not enough, the storage liquid can be directly added to the pump body from the liquid filling port on the pump casing, and should not be covered with insufficient storage liquid. Start the pump under certain circumstances, otherwise the pump will not work normally and the mechanical seal will be easily damaged.

(3) Check whether the rotating parts of the pump are stuck.

(4) Check the pump body foot and the nuts of each connection for looseness.

(5) Check the coaxiality or parallelism of the pump shaft and the motor shaft.

(6) Check the inlet pipeline for air leakage. If there is air leakage, try to eliminate it.

(7) Open the valve of the suction line and slightly open (do not fully open) the outlet control valve.

2. Start and operation:

(1) Start the oil pump and pay attention to whether the steering of the pump shaft is correct.

(2) Pay attention to whether there are 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 fluctuate for a period of time and the indication is stable, it means that the pump has been filled with liquid, and the oil pump has entered the normal oil delivery operation.

(4) During the process of self-priming (or scavenging) before the pump enters the normal oil delivery operation, special attention should be paid to the increase of oil temperature in the pump. If this process is too long and the oil temperature in the pump is too high, stop the pump for inspection its reasons.

(5) If the temperature of the liquid in the pump is too high to cause self-priming difficulties, the pump should be temporarily stopped, and the liquid in the discharge pipeline should be used to flow back into the pump or directly add liquid to the pump at the liquid filling port on the pump body. , to cool the liquid in the pump, and then start it.

(6) Adjust the outlet control valve so that the pressure gauge reading is within the specified range, avoid the oil pump working at the lower limit of the specified range, prevent the motor from overloading due to excessive shaft power, or cause the pump to cavitate due to excessive flow, which affects the normal operation of the pump. Make the pump vibrate strongly and make noise. Please refer to the "Various Liquid Pressure Control Range Table" for the range of pressure used when conveying various oils.