Application field

From the performance range of the pump, the flow rate of the giant pump can reach more than hundreds of thousands of cubic meters per hour, while the flow rate of the micro pump is less than tens of milliliters per hour; the pressure of the pump can range from normal pressure to as high as 19.61Mpa (200kgf/ cm2) above; the minimum temperature of the transported liquid is below -200 degrees Celsius, and the highest temperature can reach above 800 degrees Celsius. The pump transports a wide variety of liquids, such as transporting water (clear water, sewage, etc.), oil, acid and alkali, suspension, and liquid metal.In agricultural production, pumps are the main irrigation and drainage machinery.

In the shipbuilding industry, there are generally more than a hundred pumps used on each ocean-going ship, and their types are also various. Others, such as urban water supply and drainage, water for steam locomotives, lubrication and cooling in machine tools, transportation of bleaching liquid and dyes in the textile industry, transportation of pulp in the paper industry, and transportation of milk and sugar in the food industry, etc., all require a large number of pump.

Maintenance attention

The pump works with two gears meshing with each other and does not have high requirements for the medium. The pump is equipped with a pair of rotary gears in the pump body, one is active and the other is passive. Depending on the mutual meshing of the two gears, the entire working chamber in the pump is divided into two independent parts. When the pump is running, the driving gear drives the passive gear to rotate, and the liquid is squeezed out when the gears are engaged, forming a high-pressure liquid that is discharged out of the pump through the pump outlet.
1. Grease frequently. The electric oil drum pump runs at high speed, and the grease is easy to volatilize. Therefore, the lubrication at the bearing must be kept clean, and attention must be paid to adding and replacing.

2. When forming fibers, pay attention to storage. The electric oil well pump should be placed in a dry, clean environment without corrosive gases.
3. Pay attention to the insulation resistance of the pump. For the electric liquid pump that has been left unused for a long time or used in a humid environment, the insulation resistance of the winding must be measured with a 500 volt megger before use. If the insulation resistance between the winding and the motor casing is less than 7 megohms, the winding must be dried.
4. Check and maintain the pump frequently. The electric oil drum pump should be checked and maintained frequently. The power line must be checked: whether the internal wiring, plug, switch are in good condition, whether the insulation resistance is normal, whether the brush tail seat is loose, and the commutator is in contact with the brush Good, whether the armature winding stage expands the stator winding, whether there is a proper circuit breaker, whether the bearing and rotating parts are damaged, etc.
5. Save each part and replace the same parts. When disassembling and inspecting the pump, you should save each part. Pay special attention to the explosion-proof surface of the flame-proof parts so that it cannot be damaged. , must be replaced with new identical parts, must not use substitute materials lower than the performance of raw materials or parts that do not match the original specifications, all parts should be installed in the original position during assembly, and cannot be missed.

Layout requirements

Technically, there are certain requirements and technical indicators:
Pump layout requirements
1. For pumps arranged in the open air or semi-open air, generally make the pump perpendicular to the axis of the prime mover and the axis of the pipe gallery.
2. For pumps arranged indoors, when the temperature of the pumped liquid is higher than the natural point or the pumped liquid is liquid hydrocarbon, it should be placed in a separate room from other pumps and separated by a firewall.
When the pump is arranged indoors, the passage requirements of motor maintenance vehicles are generally not considered.

The net distance between the pump end or pump side and the wall should not be less than 1.2-1.5m, and the net distance between two rows of pumps should not be less than 2m. The power side and the pump side of the steam reciprocating pump should have a position for pulling out the piston and tie rod.When the vertical pump is arranged under the pipe gallery or under the frame, the space required for the installation and maintenance of the pump body should be reserved above it.Various centrifugal pump maintenance inspection required space. When the pipeline is arranged, at least one side of the pump should be reserved for maintenance.Space required for maintenance and inspection of other types of pumps.