Water pumps for watering can be submersible and surface. Garden superficial pumps are divided into manual and automatic. And still household pumps are provided by centrifugal and vibration models.
Water pumps for watering the well, well, the lake or the small river allow to extract water from various sources, whether it be. Modern water supply systems differ in reliability and simplicity in service, and some models are capable to work even without control of the person. What water pumps for watering are?
Submersible pumps
First of all such equipment differs from each other in arrangement of rather pumped liquid. Submersible work with immersion in water, surface is not present. Submersible pumps in turn are divided into borehole and well. At borehole or deep pumps very big pressure. It leaves the mark on the device of such equipment. The pump enclosure has the form of cylinder and is made of stainless steel. It is intended for getting of water from deep water.
Well pumps pump water from wells, natural reservoirs and special tanks. Such strict requirements as borehole therefore it is possible to use engine resources more effectively are not imposed to such equipment. The well pump well works only with water source depth not less than 1 m.
Superficial pumps
Superficial pumps are on the land and pump liquid by means of the hose submerged in water. Limit of their opportunities – water lifting from depth in 7-8 m, but if to equip them with the external ejector, they will be capable to work also at much bigger depth, but with smaller performance and bigger power. If the superficial pump takes away water from source, it is called self-inhausting. Such equipment before start is filled with water. Garden superficial pumps have simple design and low prime cost. The truth they cannot work in the autonomous mode: it is necessary to watch constantly pressure in system and to manually switch on and off the pump. Automatically superficial operated pumps are deprived of these shortcomings: the equipment reacts to the provision of tapping cock, and joins independently and switched off, providing uninterrupted water supply of the house. Pumping stations provide the site with water in small volume. The pump, the pressure switch and the hydroaccumulator with a capacity of 20 l enter their design simple garden. Household pumps can be centrifugal and vibration. Centrifugal are based on action of the spinning wheel fixed on shaft in the body. Rotating, the wheel creates area of reduced pressure in the center and raised – on the periphery. As a result water is thrown out outside. Vibration are based on action of membrane – the vibrator. The direction of bend of membrane defines change of enclosed volume of cavity, and it affects pressure. At its reduction, water from the entering branch pipe is inhausted in pump cavity, and at increase is pushed out in water supply system. This type of deposits considerably concedes in performance to centrifugal.