Aquarium Submersible Pump A very versatile water treatment tool. Submersible pumps and ordinary pump difference is that it works in the water, and most of the pumps work on the ground. Submersible pump works: submersible pump pump, suction pipe and pump must be filled with liquid. After the pump is turned on, the impeller rotates at a high speed. The liquid in the submersible pump rotates with the blades. Under the action of centrifugal force, the liquid will fly out of the impeller and the liquid will gradually become slower in the diffusion chamber of the pump housing, and the pressure gradually increases. From the pump outlet, discharge pipe outflow. At this time, at the center of the vane, the liquid is thrown around to form a vacuum low-pressure area where neither air nor liquid is present, and the liquid in the liquid pool flows into the submersible pump through the suction tube by the atmospheric pressure of the pool surface, Continuously sucked from the liquid pool up and down continuously from the discharge tube. Submersible pump basic parameters: including flow, head, pump speed, power, rated current, efficiency, diameter, etc. Submersible pump main purposes and scope: including construction of drainage, irrigation and drainage agriculture and industry, Water supply, and even emergency rescue and other pump compact and lightweight, play an important role in rural life. In the application should pay attention to the following points: (1) purchase submersible pump should pay attention to its model, flow and lift. If the specifications used inappropriately, will not be able to get enough water, can not play unit efficiency. In addition, we should also clarify the direction of rotation of the motor, some types of submersible pump forward and reverse can be water, but reverse the small amount of water, the current is large, the reverse will damage the motor windings. To prevent submersible pump leakage in the water when working under the accident caused by electric shock, leakage protection switch should be installed. (2) install the submersible pump, the cable should be overhead, the power cord should not be too long. Do not force the cable when the unit is launching, which may cause the power cord to break. Submersible pumps do not sink into the mud during work, otherwise it will lead to poor motor cooling and burn motor windings. Installation, the insulation resistance of the motor should not be less than 0.5MΠ: 13kW motor can be directly started below, 13kW above should be used to start the compensator. (3) try to avoid starting at low pressure. When the voltage is too low, the motor speed will drop. If the voltage is less than 70% of the rated speed, the centrifugal switch will be closed and the starting winding leader will be closed Time power and heat even burn the windings and capacitors. Do not switch the motor on and off frequently. This is because the pump will run back when it stops. If it is turned on immediately, the motor will start to load, causing the starting current to be too large to burn the winding. (4) Do not allow long-term overload pump operation, do not pumping large amounts of water, dehydration pump operation time should not be too long, so as not to overheat and burn the motor. During the operation of the unit, the operator must keep an eye on whether the working voltage and current are within the values ​​specified on the nameplate. If not, the motor should be stopped to find out the cause and eliminate the fault. (5) Usually more than check the motor, found under the crack, rubber seal ring damage or failure, etc., should be promptly replaced or repaired to prevent water penetration into the machine.