The reasons for submersible water pumps flow quantity decrease

The reasons for submersible water pumps flow quantity decrease

Submersible pump is a very versatile tool in water treatment. Unlike ordinary water pump it works under water, and water pump work mostly on the ground. Submersible pump installation, use, maintenance convenience simple, cover an area of an area small, do not need to build the pump room. Simple structure, saves the raw material.

Submersible pump compact structure, and only when the work will be in the water pump can be start work, simple installation, convenient movement. Due to its simple structure, small volume, easy to use, so got rapid development. Submersible pump design starting point is "no jams, no winding", some models with a torn institutions or cutting device, can carry sewage long fiber, bags, such as tear out the back.

Open pump, the suction pipe and pump must be filled with liquid. After open pump, high-speed rotating impeller, the liquid with the blades rotate together, in under the action of centrifugal force, fly away from the impeller to injection, injection of the liquid in the pump shell gradually spread of indoor speed slow, pressure increase gradually, and then from the pump discharge, the discharge pipe flow.

Place in the center of the blade due to liquid was dumped into the surrounding formation is no air and no liquid vacuum low pressure area, fluid in the pool liquid under the action of atmospheric pressure on surface of the pool, the suction pipe into the pump, the liquid is continuously from the liquid pool was sucking up and continuously from the discharge pipe flow. Submersible pump eight factors of water or no flow because there are a lot of submersible pump material is cast iron or plastic, if only use these materials to the submersible pump, it is difficult to meet the needs of customers, such as there are many corrosive medium can't emissions, such as sulfuric acid, hydrochloric acid, nitric acid, etc.; This is one of its characteristics. Also features besides not rust, high temperature resistance.

So there are a lot of manufacturers and production of the high temperature resistant stainless steel submersible pump. Although is stainless steel, but there are a lot of auxiliary material is not much high temperature resistant, generally within 120 ° is no problem, such as some chemical plants need high temperature over 200 degrees or choose centrifugal pump. Insufficient in the operation process of 1, submersible pump flow or no flow, the main reason:(1) the pump installation height is too high, not enough impeller submersion depth, led to the decrease of the water pump water yield;(2) water pump to the opposite;(3) water valve cannot be opened;(4) water line is not clear or impeller blocked;(5) the lower pump abrasion and circle severe or debris jam;(6) pumping liquid density or viscosity is too high;(7) loss or damage to the impeller;(8) pumps more common, the output of the line is not installed a one-way valve or one-way valve seal is lax.2, elimination measures(1) to control the pump installation elevation of allowable deviation, an extended arbitrarily;(2) the pump test run before idling motor, check the steering to that of the water pump.

In the process of using the above situation should check whether the power phase sequence change;(3) check valves, and often the valve for maintenance;(4) clean the pipe and impeller clogs, often salvage reservoirs stuff:(5) clean up debris or replace wearing ring;(6) to find the cause of the water quality change and management;(7) to reinforce or change the impeller;(8) add or replace a one-way valve after check the reason.