For swimming pools, water pumps are like the human heart, occupying an important position! The pool water pumps currently on the market are dazzling. Some manufacturers have low prices, regardless of their quality and design, resulting in difficult maintenance, high noise, poor effect, high cost, and so on! So, before buying a swimming pool pump, we should understand those common sense, how to choose the right pump for the swimming pool?

Learn about water pumps

A water pump is a hydraulic machine that uses power equipment and transmission devices or uses natural energy to lift water from a low place to a high place or transport it to a distant place. The working process of the water pump: the electrical energy is converted into the mechanical energy of the high-speed rotation of the motor, and then converted into the kinetic energy and potential energy of the pumped liquid for energy transfer and conversion. When the water pump works, the pool water enters the circulating water pump with its own hair filter through the water return device, and is pumped into the sand tank for filtration by the water pump.

Pump head

Head refers to the maximum height that the pump can lift water, and is an important working parameter of the pump. The factors that affect the size of the head include the structure of the pump (impeller size, degree of bending), speed, flow, and so on. The pump lift is generally 1.15-1.20 times the required lifting height. If the vertical height of the water is 20 meters, the required lift is about 23-24 meters. When choosing a water pump, the head should be close to the required head, and the general deviation should not exceed 20%.

Many people think that lower head working conditions choose high-lift pumps to use a wider range of heads. In fact, when the high-head water pump is used for low-head, the motor will be overloaded with excessive flow. Long-term operation will cause the motor to heat up or burn out, and may cause inhalation accidents.

Pump flow

The flow rate of a water pump is the amount of water output through the outlet of the water pump per unit time. It is a measure of the potential and kinetic energy obtained when the pump resists the circulation and filters the pressure of the entire system, so the flow rate is the flow rate under a certain head, and different pressure heads There are different flow rates. When the head is high, the flow is small, and when the head is small, the flow is large. The flow rate of the water pump can generally be selected according to the specific use situation, if it is too large, the purchase cost will increase.

Energy saving and high efficiency

In the purchase of swimming pool pumps, we should try our best to choose high-efficiency, energy-saving and low-consumption equipment, which can save water and energy and reduce costs during the use of the swimming pool. In addition, due to the large static friction of the pipeline when starting the water pump, the pump needs to have a higher head instantaneously, but it does not require such a large power when the water normally flows in the pipeline. Therefore, in the actual application of water pumps, if conditions permit, you can choose to purchase variable frequency water pumps, which can reduce energy consumption to a greater extent.

Product safety

Although the water pump of the swimming pool is installed in the equipment room, the water must pass through the water pump to circulate into living water. Once the plastic sealing ring is aging and deformed or the insulation is broken down, the protection switch will fail, and the sealing ring will leak water and other problems will cause the water to enter. , It may cause leakage! Therefore, when we choose a swimming pool pump, we also have certain requirements for the pump's motor protection level, bearings and mechanical seals.

The protection level of the motor is generally expressed by the number after the IP, the first is the degree of dust resistance, and the second is the degree of waterproofing. The insulation grade of the motor refers to the heat resistance grade of the insulating material used, which can be divided into A, E, B, F, H, and C grades. The insulating material of each insulation grade has a corresponding limit allowable operating temperature. If the temperature is Exceeding the allowable value may cause the motor or transformer to burn out. The level of insulation level actually reflects the ability of the motor to withstand temperature rise during use. The higher the insulation level, the more suitable the use of high-load and high-frequency motors.

Brands and manufacturers

In the actual purchase of water pumps, in addition to choosing high-efficiency, energy-saving, low-noise, corrosion-resistant, anti-pollution, durable, easy-to-operate, safe and easy-to-maintain water pumps, we should also choose professional swimming pool equipment manufacturers. Do better in terms of professionalism, science, safety, energy saving, repair rate and durability.

Espa Water Pump

ESPA swimming pool equipment originated from Spain. It is a large-scale manufacturer specializing in the design, production and sales of swimming pool circulating water pumps, swimming pool filtration systems, disinfection, and swimming pool accessories. It has more than 50 years of production history and is in the field of swimming pool related products. Strong technical advantage. The exquisite production technology, high-tech raw materials, and strict quality control of Asba pumps make ESPA pump products truly "high efficiency, high-end configuration, and durable", and make Asba ESPA swimming pool equipment in Spain It has developed its own sales network in more than 50 countries in Europe, America and Asia.

Match with other equipment

In order to choose the right pump for the swimming pool, we should not only pay attention to the above aspects, but also pay attention to the choice of other equipment configuration in the swimming pool.

When the pipeline system is too small and the water flows in the pipeline, the resistance of the pipeline to the water flow increases and the water flow is restricted. The result is: ①Because the piping system can't meet the circulation capacity of the pump at all, it causes a waste of electricity and an increase in operating costs. ②Due to excessive suction, the pump cannot suck enough water, causing cavitation. The large number of bubbles generated by this phenomenon will increase the noise, and worse, it will greatly shorten the life of the pump, especially the water wheel.

If the matching filter configuration is too small, it will cause the water to flow through the filter faster. It will not only damage the filter, but also cause the sand tank sand bed to form a water channel or damage the filter element, which will affect the filtering effect.

In addition, after choosing the desired pump, we also need to pay attention to the following points to correctly grasp the use of the pump to improve the life of the pump.

① Self-examination. Before starting the pump, we should do some necessary inspections to improve the service life of the pump: whether the pump shaft is rotating normally and whether there is any jamming. Whether the position of the impeller is normal. Whether the cable and the cable plug are broken. Whether the inlet valve and outlet valve are open.

②Location. The location of the water pump should have good ventilation to facilitate rapid heat dissipation, prevent the motor from overheating for a long time, and ensure that it will not be submerged by the accumulated water.

③Failure. Once the water pump fails, simply conduct self-examination and contact the manufacturer for repair. Do not disassemble the inside of the machine by yourself.

④ Non-use period. Drain the water in the pump in time (especially in cold winter) and place it in a dry place. You can apply some lubricating oil to key parts such as bearings to prevent them from rusting.