1, according to the pressure stability of the variable pressure type; the user does not have special requirements for water pressure, generally used variable pressure water supply equipment, air volume in the pneumatic tank with the water supply conditions. The water supply system is working under variable pressure. The working process for the pump to work to the pipe network water supply, pump water supply is greater than the water consumption of the pipe network, excess water into the sealed tank and constantly occupy the tank volume, and the tank air is compressed, the tank water pressure rising, when the pressure reaches the maximum pressure set, through the pressure switch control pump stop working. At this time, the water in the sealed tank is sent to the pipe network under the action of the compressed air. With the reduction of water, the water level drops, the volume of air in the tank increases, the pressure is gradually reduced, when the pressure drops to the set minimum working pressure, through the pressure switch to control the pump to start. So on and so forth. Pneumatic water supply system in direct contact with the air and water, after a period of time, the air due to leakage and dissolved in water and gradually reduce the volume of regulation is gradually reduced, the pump starts more and more often, so it needs to be supplemented on a regular basis. The most commonly used is to make up air with an air compressor, in a small system can also be used in the pump pressure water pipe in the accumulation of air to make up for the air, water jets to make up for the air and regular air leakage to make up for the air and other ways. Pneumatic water supply equipment tank can be placed horizontally or vertically. In the water tank of the inlet pipe and outlet pipe, respectively, should be set up to stop the water valve and stop the valve, in order to prevent water into the air pipeline and compressed air into the distribution network.
Constant pressure type; in the user requires stable water pressure, can be installed in the variable pressure pneumatic water supply device on the water supply pipe regulating valve, so that the water pressure after the valve in the required range, the pipe network is in constant pressure work.
Pneumatic water supply equipment should be used variable pressure type, when the water supply pressure has a constant requirement, should be used fixed pressure type.
2, according to the type of pneumatic water tank filling type; in the pneumatic tank air and water contact, due to air leakage and dissolved in water, so that the gradual loss of air in the tank, the gradual reduction of air in the tank, in order to ensure that the water supply system operating conditions, the need to make up for the gas at any time. Commonly used to make up for the air compressor, make-up tank, air leakage to make up for the air, or the use of water pumps in the water pipe accumulated air to make up for the air, Zhejiang Province, the injector to make up for the air.
Diaphragm type; by the rubber capsule type elastic diaphragm expansion and deformation of the adjustment of the amount of water, can be once inflated, long-term use, do not need to make up for the gas equipment, and is conducive to the protection of water quality is not polluted.
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